k******9
发帖数: 878 | 1 谢谢楼上2位，我现在用家里老的音响，实在效果太差了，雅马哈three way,
frequency range 100hz-40khz,impedance 6 ohms, nominal input 35w, maximum
input 120w, sensitivity 83dB,
你说的灵敏度是sensitivity? 那需要多少的数值？
我现在考虑的有JBL ES80，正好在打折，一对只有288
还有就是vocopro sv500 or sv600
再有就是日本的BMB CSX-550 |
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j**a
发帖数: 119 | 2 呵呵，一着急忘了贴音箱参数，
Pioneer fs51
Power Rating
130 W (Max.)
Frequency Response
45 Hz-20 kHz
Nominal Impedance
6 Ohms
Sensitivity
87 dB (2.83 V) |
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n*****g
发帖数: 178 | 3 我想弄个卡拉OK，兼家庭影院效果。不知道雅马哈HTR-3066 能否带得起五个bose 301+
subwoofer？
雅马哈参数如下，我看不懂为何有两个不同的瓦数per channel？？
5-channel powerful surround sound
100 W per channel (8 ohms, 1 kHz, 0.9% THD, 1-ch driven)
70 W per channel (8 ohms, 20 Hz-20 kHz, 0.09% THD, 2-ch driven)
Discrete amp configuration
HD Audio format decoding: Dolby® TrueHD and DTS-HD Master Audio™
Dolby® Digital Plus and DTS-HD High Resolution Audio™
192 kHz/24-bit Burr-Brown DACs for all channels
High dynamic power, low-impedance... 阅读全帖 |
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p********e
发帖数: 16048 | 4 价格：$1250+运费 估计$40/或者你的label
For sale is a pair of Sonus Faber Liuto Monitor Speakers in piano black
color.
They sound fantastic. You can come to audition them. They are in like-new
condition and 100% working, with original grills, package, and cloth covers.
Spec:
Sensitivity (db/w/m) 86
Dimensions (hwd, cm) 35x19x34
Impedance (ohms) 8
Max power handling (watts) 150 |
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q******y
发帖数: 100 | 6 二手的bose一套：两个301 V， 两个301 IV，一个VCS-10 center, 价格是$450. 麻烦
帮忙看看二手的这个价格合适么？还有K歌应该是足够了，看电影，听音乐如何？已经
有一个很多年前买的Onkyo HT-R340 receiver，参数如下，不知能不能推动这一套301
？麻烦给些建议，谢谢！
Onkyo HT-R340
Surround channels5.1
Surround supportDolby Digital, DTS
Power output: 100 watts per channel into 6Ω (stereo)
Surround output: 100W (front), 100W (center), 100W (rear)
Frequency response: 10Hz to 50kHz
Total harmonic distortion: 0.9%
Damping factor: 60
Input sensitivity: 200mV (line)
Signal to noise ratio: 100dB (line)
O... 阅读全帖 |
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发帖数: 1 | 7 不知道你已经买了没，下面是我的一些建议：
Karaoke系统主要由以下几个部分组成：
1.话筒
2. 点歌机
3. 前级（也可称混响，调音器）
4. 功放
5. 音箱
先谈话筒。话筒是这几个部分中比较重要的。其他的设备再好，话筒不好也白搭。所以
这个部分不能吝惜。推荐比较常用，质量好的话筒品牌，如shure, sennheiser, ev。
我用的是shure sm58。比较老的型号了，但是性能不错，价格100。缺点是有线话筒。
如果你喜欢无线话筒的无拘无束，也可以买以上几个品牌的无线话筒。不过价格比有线
的贵出很多。在自己的预算范围内，以上品牌各个型号的话筒都可以。 另外，话筒一
般分为 cardioid, supercardioid, 和 condenser。如果对音质要求很高，可以考虑买
condenser 话筒。不过注意，condenser 话筒需要额外的电源，通常是48V的幻象电源
，这个电源一般在前级上。以下会谈到。
点歌机可以专门买一个，也可以用笔记本电脑。点歌机的优点是操作简单，而且随机赠
送几千到几万首歌，有的甚至可以到cloud里下载最新歌曲。在这里可以买到的品牌有... 阅读全帖 |
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s*******t
发帖数: 300 | 8 先介绍一下基本情况，本人小白一个，对音响一窍不通。最近开始琢磨家庭影院。
media room面积大概350sqft左右。原来房主的布线是5.1的，为了省钱省事还是做5.1
的音响系统吧。
关于预算，是希望音响加receiver尽量控制在1500以下。因为想着感恩节前弄好，所以
也不没法等deal了。
本人声音敏感度不高，对音质最低要求是希望中音区舒服，高音区不刺耳，不太关心低
音(其实很讨厌那种要把窗户爆掉的低音）， 在看电影时不要求音响powerful,但是起
码要能听清对话。沙发离屏幕大概4到5米之间。
后来在版面上看到大家讨论卡啦OK，也很感兴趣，于是就想着能不能家庭影院和卡拉ok
兼顾呢，所以就有了下面的‘奇葩’配置：
Polk Audio Monitor70 Series II Floorstanding Loudspeaker (Black) One Pair --
$336
8-ohm impedance,Frequency response: 30Hz-25kHz ,Power rating 20-275W， 1"
dome tweeter and four 6.5"... 阅读全帖 |
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p*******m
发帖数: 20761 | 9 Mirage M-290
Loudspeaker System
add a review add a review
mirage 290is loudspeaker system
Mirage M-290
Specifications
Type: 2 way, 2 driver loudspeaker system
Frequency Response: 43Hz to 22kHz
Power Handling: 125W
Recommended Amplifier: 15 to 125W
Crossover Frequency: 1800Hz
Impedance: 8Ω
Sensitivity: 87dB
Bass: 1 x 165mm polypropylene cone
Tweeter: 1 x 25.4mm titanium dome
Enclosure: front ported
Finish: black ash vinyl, rosewood
Dimensions: 406 x 216 x 267mm
Weight: 7.1kg
比5块钱买的玩具toy效果如何... 阅读全帖 |
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s**********r
发帖数: 88 | 10 电面大约20多分钟
问问题的人是技术部的（小公司，估计什么都懂一点的，不然就不会问的那么杂了）
前面自述自己，略微问一下
后面问问题
问了很多技术问题，他英语说得很快，再加上特别技术，导致我不少问题都让他repeat
了，其实本人英语不算差，日常工作都没有问题，只是工作不太技术
1. 大约问的是impedence的问题，没听太清，我猜测他问的是输入阻抗和输出阻抗匹配
，我回答了，他说大约是这个意思
2. 给一个不知道值的电容，给一个信号发生器，一个示波器，问如何测电容的值，可
以外加一点小的东西，我说的是用建一个filter，然后测值
3. BJT 和 FET，大概说了，BJT是个PN结组成的，一般模拟电路中用，FET是用作开关
电路...我不太清楚这个，再加上什么射极...英文更不会说了...然后就说不会了，他
说比不少人回答得好了
4. Virtue function，这个简单
5. 给一个LED 怎么判断是不是好的，我猜测是7段LED(好老的东西啊），然后说一段一
段的测试,也不知道对不对
6. 问了一个c嵌入式的问题和一个os的问题，既没听清楚，也没回答出来
7. 问了一个纳奎 |
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b****r
发帖数: 78 | 11 EE方面的，对问什么一点头绪都没有，impedance tracking? |
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w******a
发帖数: 78 | 12 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 |
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r*****i
发帖数: 917 | 13 Senior Test Engineer (high-end)
Roles & Responsibilities:
• Development and operation of Li-ion battery assembly process
• Hands-on operation of aqueous and non-aqueous electrochemical
battery test equipment, interpretation of results and development of
operating parameters.
• Hands-on operation of diagnostic instruments such as
electrochemical impedance spectrometry, and performing test of thermal
cycling stability, mechanical durability, failure mode and hazard
ident... 阅读全帖 |
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m********o
发帖数: 796 | 14 【 以下文字转载自 EE 讨论区 】
发信人: momoxinduo (馍馍), 信区: EE
标 题: 求大boston地区的EE system/application engineer内推
发信站: BBS 未名空间站 (Tue Aug 27 16:10:55 2013, 美东)
楼主背景：
PKU EE MS + BS(embedded system)
USA MS，目前phd,已quit，老板愿意签CPT
主要的project experience：
1：System Design for ARM9 Processor
(1) Minimum system design including on-board RAM and Flash interface, audio
peripheral circuit design using I2S control; schematic and 8-layer PCB
layout; hardware system integration and debug
(2) Linux kernel transplantation; audio... 阅读全帖 |
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A******i
发帖数: 34 | 15 【 以下文字转载自 EE 讨论区 】
发信人: AngelaQi (Angela), 信区: EE
标 题: Electric Engineer-Santa Barbara- salary: 80,000-100,000/ye
关键字: Electric Engineer,Santa Barbara
发信站: BBS 未名空间站 (Thu Sep 5 19:39:32 2013, 美东)
Seeking Senior Electrical Engineer who excels in Motor control, Analog /
Digital Design, and Board Layout. Applicant will be part of an elite team
capable of developing a variety of leading edge semiconductor
instrumentation.
SUMMARY: Responsible for the electrical aspects of design, development and
m... 阅读全帖 |
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p*****p
发帖数: 33 | 16 据说很多人都在买买提上找到工作了，我在网上投了不少大部分都没消息了，所以也来
这里求大家帮忙。
我12月刚刚硕士毕业，在实验室干了两年，做过PV simulator 设计，Microgrid
testbed 的CAN通讯系统设计，跟着实验室的师兄做过DCDC converter，对半导体器件
测试略懂。会用LabVIEW，
Altium Designer，orCAD，PSIM，CCS，DSP，impedance analyzer, spectrum
analyzer。
之前一直忙着毕业的project，所以没有太多精力投入到找工作上去。学校的career
fair的时候跟着实验室的师兄们去了ECCE，结果又错过了找工作的好机会。都说女生比
较好找工作，可是现在毕业了都没着落，实在是着急。EAD卡已经 issue了，马上可以
拿到开始工作。求论坛上的学长学姐给个内推机会，不胜感激，我的email是：penny.
p***[email protected] |
|
p*****p
发帖数: 33 | 17 据说很多人都在买买提上找到工作了，我在网上投了不少大部分都没消息了，所以也来
这里求大家帮忙。
我12月刚刚硕士毕业，在实验室干了两年，做过PV simulator 设计，Microgrid
testbed 的CAN通讯系统设计，跟着实验室的师兄做过DCDC converter，对半导体器件
测试略懂。会用LabVIEW，
Altium Designer，orCAD，PSIM，CCS，DSP，impedance analyzer, spectrum
analyzer。
之前一直忙着毕业的project，所以没有太多精力投入到找工作上去。学校的career
fair的时候跟着实验室的师兄们去了ECCE，结果又错过了找工作的好机会。都说女生比
较好找工作，可是现在毕业了都没着落，实在是着急。EAD卡已经 issue了，马上可以
拿到开始工作。求论坛上的学长学姐给个内推机会，不胜感激，我的email是：penny.
p***[email protected] |
|
s****i
发帖数: 857 | 18 为找工作做好准备,看书的时候碰见一个不懂的问题:
有些芯片管脚可定义为Hi-z状态.请问有人帮我解释一下吗?这个是个什么状态? 谢谢 |
|
|
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h***d
发帖数: 2188 | 21 在洛杉矶东部，需要一名SI仿真工程师，最好有工作经验，做connectors, PCB boards
impedance simulation, return loss, insertion loss etc. 熟悉SI仿真软件更好，
国内top 2的更好
回复站内信箱 |
|
m********8
发帖数: 938 | 22 microwave basic, transmission line, smith chart, strip line , microstrip
line.
impedance matching, LNA, NF, Sensitivity, IP3, 1db compression, PA, loadpull
, Effeciency, PAE,
GSM,CDMA, WCDMA, LTE system and test
basic programming, C |
|
s********t
发帖数: 29 | 23 a letter from an recuiter.
We are seeking a battery chemist to support its Research & Development
efforts and be an integral part of our battery testing and characterization
team. Provide operational expertise relating to battery testing and
characterization including assembly of batteries, electrochemical test
protocol implementation, abuse testing, test results documentation and post-
mortem analysis. The work will also include battery degradation and failure
mode analysis to optimize battery ... 阅读全帖 |
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m****s
发帖数: 18160 | 24 【 以下文字转载自 Boston 讨论区 】
发信人: masterwu (masterwu), 信区: Boston
标 题: Job Opportunity in Beijing
发信站: BBS 未名空间站 (Wed Jun 5 14:54:21 2013, 美东)
About the Company and the Position:
China DAAS is a startup company based in Beijing, China. Its vision is to
become a leading data service company for the building of credit system for
the Chinese commercial society. The company is looking for a strong
candidate as the Chief Technology Officer (CTO). This role is competitively
paid with stock options.
Qualif... 阅读全帖 |
|
p*****p
发帖数: 33 | 25 据说很多人都在买买提上找到工作了，我在网上投了不少大部分都没消息了，所以也来
这里求大家帮忙。
我12月刚刚硕士毕业，在实验室干了两年，做过PV simulator 设计，Microgrid
testbed 的CAN通讯系统设计，跟着实验室的师兄做过DCDC converter。会用LabVIEW，
Altium Designer，orCAD，PSIM，CCS，DSP，impedance analyzer, spectrum
analyzer。
之前一直忙着毕业的project，所以没有太多精力投入到找工作上去。学校的career
fair的时候跟着实验室的师兄们去了ECCE，结果又错过了找工作的好机会。都说女生比
较好找工作，可是现在毕业了都没着落，实在是着急。EAD卡已经 issue了，马上可以
拿到开始工作。求论坛上的学长学姐给个内推机会，不胜感激，我的email是：penny.
p***[email protected] |
|
s**********y
发帖数: 2 | 26 Provide PCB layout/Fab/Assembly service. All I need from you is schematic,
board of material and basic layout guideline, mechanical drawing
Layers: up to 42 layers
Board styles: rigid, flex and rigid flex board
Tools: Cadence allegro, Altium, Mentor PowerPCB
As a CAD expertism, you can get help from me on PCB Layout, fabrication and
assembly.
Be confidence in and satisfaction on our service quality as an expert
designer.
About me:
I am a senior PCB layout designer with more than 10 years experie... 阅读全帖 |
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g**f
发帖数: 1151 | 27 Troublesome Housing Markets
It seems like every news source you read has an article about the sizzling hou
sing market and the impeding doom that awaits every homeowner as the housing b
ubble is sure to burst. While this theory does have some validity, it is a bit
on the extreme. According to more recent findings and even Greenspan himself,
the housing bubble may not be at the national level, but rather more at the r
egional level. The latest edition of Kiplinger's Personal Finance magazine hig |
|
n*********e
发帖数: 25274 | 28 Distressed sales at lowest level since at least 2008
股市暴跌中...
WASHINGTON (MarketWatch) — Sales of existing homes fell 1.5% in May as
fewer cheap homes were sold, a trade group said Thursday.
The National Association of Realtors said sales for the month yielded a
seasonally adjusted annual rate of 4.55 million, down from an unrevised pace
of 4.62 million in April. Economists polled by MarketWatch anticipated a 4.
6 million annual rate in May.
Compared to May 2011, sales were up 9.6%, the 11th str... 阅读全帖 |
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i***e
发帖数: 9429 | 29 100 来块只能买有线的，behringer xm 5800 那个不错，不过要装个LO-Z Impedance
Transformer ，我以前就用这个，现在做备用。
目前用的是vocopro uhf-5800，用了好多年了，目前貌似涨价了，音质比起要求高的还
是有差，不过我觉得已经很满意了。 |
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w*********s
发帖数: 2136 | 30 Why Almost Everything You Hear About Medicine Is Wrong
http://www.newsweek.com/2011/01/23/why-almost-everything-you-he
If you follow the news about health research, you risk whiplash. First
garlic lowers bad cholesterol, then—after more study—it doesn’t. Hormone
replacement reduces the risk of heart disease in postmenopausal women, until
a huge study finds that it doesn’t (and that it raises the risk of breast
cancer to boot). Eating a big breakfast cuts your total daily calories, or
not—as a st... 阅读全帖 |
|
l*h
发帖数: 4124 | 31 this is categorically wrong. inhaled steroids are safe if used as prescribed
, but they have side effects, even though the rate is much lower than
systemic steroids, and the side effects are typically mild and easy to treat.
inhaled steroids, at recommended dosage, won't impede a child's development
and growth.
"吸入性激素正如儿医所说，常年累月的吸激素没有副作用" |
|
l*h
发帖数: 4124 | 32 this is categorically wrong. inhaled steroids are safe if used as prescribed
, but they have side effects, even though the rate is much lower than
systemic steroids, and the side effects are typically mild and easy to treat.
inhaled steroids, at recommended dosage, won't impede a child's development
and growth.
"吸入性激素正如儿医所说，常年累月的吸激素没有副作用" |
|
m*****a
发帖数: 2609 | 33 更新：今天做了些调研，有了些正面的收获。简单说就是关卡，然后大模大样地跟三个
bureau要求remove account就好了:)。
下面的答复都是三大局的直接回答，不是"应该"，"可能"之类个人观点，不相信的自己
去读我附上的source链接：
1.如果主卡人关掉副卡，Experian会remove该Authorized user account信息：
"Because an authorized user has no responsibility for the debt, creditors
will typically remove them from the account on request. When the lender
reports its account data and no longer includes your son’s name as
associated with the account, Experian will remove the account from your son
’s credit report."
Source; http... 阅读全帖 |
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c**********0
发帖数: 836 | 34 Update: added English report link
中国年轻父母追捧的雅培奶粉竟然完全不符合国际标准，也未达到中国国家标准。昨天
，第三方机构香港CERResearch公司发布报告称，其送检了从中国市场购买的六个品牌
的婴幼儿配方奶粉，检测结果均不合格，雅培样品是最差的。
□检测结果
六品牌均不合格雅培喜康宝最差
CERResearch从事中国市场的调查和研究，公司 CEO Graham Earnshaw(晏格文)昨
天接受记者采访时称，公司日前从上海和香港购买了六个品牌的婴幼儿配方奶粉，邮寄
到德国一个世界一流的专业检测食品安全的实验室进行成分检测和分析。
“目前，这些样品的检测数据都出来了，我们将这些数据提供给专家，由他们做出
判断”，晏格文表示，目前专家的态度是，检测的6个样品中，没有一个符合中国国家
标准。其中，雅培的样品被检测出是送检样品中最差的一个，完全不符合国际标准，也
未达中国新国标。
>>雅培样品问题
酪蛋白太高疑高温处理
报告指出，根据中国标准，婴幼儿配方奶粉中乳清蛋白与酪蛋白的最低比例不能低
于60%，而雅培的喜康宝一段的最终检测结果为41%... 阅读全帖 |
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a*****g
发帖数: 19398 | 35 Imagine a kindergarten classroom. Picture the vividly colored scalloped
borders on the walls, the dancing letters, maybe some charming cartoon
barnyard animals holding up “Welcome to School!” signs.
That bright, cheery look has become a familiar sight in classrooms across
the country, one that has only grown over the last few decades, fed by the
proliferation of educational supply stores. But to what effect?
A new study looked at whether such classrooms encourage, or actually
distract from, lear... 阅读全帖 |
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B******1
发帖数: 9094 | 36 I heard that the quicker you remove ear wax from the ear, the more ear wax
will be generated. Ear wax will come and go naturally. Minimal if any
intervention is required.
Wax is a semi-solid. It won't impede sound's penetration effectively. |
|
w*********s
发帖数: 2136 | 37 Why Almost Everything You Hear About Medicine Is Wrong
http://www.newsweek.com/2011/01/23/why-almost-everything-you-he
If you follow the news about health research, you risk whiplash. First
garlic lowers bad cholesterol, then—after more study—it doesn’t. Hormone
replacement reduces the risk of heart disease in postmenopausal women, until
a huge study finds that it doesn’t (and that it raises the risk of breast
cancer to boot). Eating a big breakfast cuts your total daily calories, or
not—as a st... 阅读全帖 |
|
o****n
发帖数: 1520 | 38 Why Gun Control Does Not Work:
When Seconds Count, the Police are Only Minutes Away
Gun control only impedes law abiding citizens. IT DOES NOT STOP CRIMINALS,
and in fact makes it EASIER for them to commit crime.
Think about this. Almost every place there has been a mass shooting has been
in a so called “gun free zone.” Do you think the criminals see a sign
that says “gun free zone” and leave in disgust looking for another target
that allows them to carry guns? Don’t be stupid.
In every city whe... 阅读全帖 |
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w***s
发帖数: 114 | 39 Nah, 邦迪保湿和实验中的保湿条件不同，保湿比干燥好，但邦迪容易粘连，用不好还
可能不卫生。按下面的说法用凡士林或抗菌膏保湿理论上好的最快。注意理论上的，保
湿前能保证无菌才行吧。不能保证还不如干燥。。。
t turns out that the myth that drying out a wound by exposing it to the air
and allowing to scab over will cause faster healing just will not go away!
Fortunately, this issue has been investigated scientifically, and it is now
conclusively demonstrated that a covered wound heals faster than an
uncovered wound! This is because the scab, although it closes off the wound
and protects it from infe... 阅读全帖 |
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a*****g
发帖数: 19398 | 40 Chicago Teachers Union votes to oppose Common Core Standards
The Chicago Teachers Union has voted to oppose the Common Core Standards, a
rigorous set of educational benchmarks implemented by Illinois law and in
many other states.
The union announced its House of Delegates voted Wednesday to urge the city
’s teachers to join the “growing national opposition to the Common Core
State Standards, saying the assessments disrupt student learning and consume
tremendous amounts of time and resources for ... 阅读全帖 |
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t******l
发帖数: 10908 | 41 这篇说得很好。我同意 Common Core Math 在 prealgebra 阶段的 over-explanation
可能 do more harm than good。
( 当然，我有 AMC 8 来平衡，我不是太担心。我们这边 accelerated path 里班的父
母们，估计也有办法。)
另外文章的下面这段，解释了为啥如果在没有跟传统数学 (比如 AMC 8) 配平比配好，
over-explanation 可能是 potential harmful，可能会 delay the leap to algebra
。(当然我个人不担心那个，我们还有 AMC 10，加个料就完事了。)
== quote ==
Math learning is a progression from concrete to abstract. The advantage to
the abstract is that the various mathematical operations can be performed
without the cumbersome attachments of ... 阅读全帖 |
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t******l
发帖数: 10908 | 42 另外我本人，以及这线程的首贴，都没有怀疑 explanation 的重要性。
讨论的是 “Mandatory demonstrations of “mathematical understanding,”
in other words, can impede the “doing” of actual mathematics.”
注意这里的关键词是 “Mandatory demonstrations”。
BTW: 这个我确有些感触，甚至一度怀疑 “Did I do the right thing on
math explanation？”。
下帖继续。 |
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a*****g
发帖数: 19398 | 43 Imagine a kindergarten classroom. Picture the vividly colored scalloped
borders on the walls, the dancing letters, maybe some charming cartoon
barnyard animals holding up “Welcome to School!” signs.
That bright, cheery look has become a familiar sight in classrooms across
the country, one that has only grown over the last few decades, fed by the
proliferation of educational supply stores. But to what effect?
A new study looked at whether such classrooms encourage, or actually
distract from, lear... 阅读全帖 |
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t******l
发帖数: 10908 | 44 当然，对纯理论假想的 hyperlexia 的 case，还是 inverse 一下。
但在后面的 decay 点上，可能还会出现一个新问题 -- retroactive interference：
http://en.wikipedia.org/wiki/Interference_theory#Retroactive_interference
[quote]
Retroactive interference[edit]
Retroactive interference (RI) is a phenomenon that occurs when newly learned
information interferes with and impedes the recall of previously learned
information.[19] RI is a result of decreased recall of the primary studied
functions due to the learning and recall of succeeding functio... 阅读全帖 |
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t******l
发帖数: 10908 | 45 [quote]
Secondary functions[edit]
The DLPFC may also be involved in the act of deception and lying,[27] which
is thought to inhibit normal tendency to truth telling. Research also
suggests that using TMS on the DLPFC can impede a person's ability to lie or
to tell the truth.[28]
Additionally, supporting evidence suggests that the DLPFC may also play a
role in conflict-induced behavioral adjustment, for instance when an
individual decides what to do when faced with conflicting rules.[29]
... ...
... 阅读全帖 |
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i**********d
发帖数: 853 | 46 A postdoctoral position is immediately available in the laboratory of Julian
M. Stewart MD, PhD at the Center for Hypotension of New York Medical
College in Valhalla, New York. (www.syncope.org).
Our research concerns orthostatic intolerance and neurovascular regulation
with a current focus on postural tachycardia syndrome (POTS), vasovagal
syncope, and their relation to central and peripheral autonomic control. We
employ methods producing orthostatic stress (upright tilt) and simulated
hemorrha... 阅读全帖 |
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l*******0
发帖数: 215 | 47 The Advanced Energy Department at Lawrence Berkeley National Laboratory has
an opportunity for a Chemist Postdoctoral Fellow to prepare, characterize
and optimize electrode materials for rechargeable lithium-ion batteries.
This position supports the research activities in the Electrochemistry Group
in developing the next-generation batteries for use in electric, hybrid-
electric, and plug-in hybrid-electric vehicles.
Essential
• Synthesize electrode materials for rechargeable lithium ba... 阅读全帖 |
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w******a
发帖数: 78 | 48 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 |
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p*******g
发帖数: 2976 | 49 【 以下文字转载自 Biology 讨论区 】
发信人: albertsmwk (.)(.), 信区: Biology
标 题: 第一批“青年千人计划”生物类@publication列表@
发信站: BBS 未名空间站 (Thu Aug 18 15:04:16 2011, 美东)
花了一个小时，深深的鄙视一下自己的无聊行径！！
125 蔡亮 男 1980年11月 复旦大学 生命
科学 2007年12月毕业于[美国]北卡大学 [美国]加州大学旧金山分校 博士后
Cai L, Mostov K. Polarity is destiny. Cell. 2009 Nov 13;139(4):660-2. PubMed
PMID: 19914162; PubMed Central PMCID: PMC2900917.
Cai L, Makhov AM, Schafer DA, Bear JE. Coronin 1B antagonizes cortactin and
remodels Arp2/3-containing actin branche... 阅读全帖 |
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B******n
发帖数: 1920 | 50 【 以下文字转载自 USANews 讨论区 】
发信人: LoneStar2017 (LoneStar), 信区: USANews
标 题: 美国版真理大讨论：美国奋斗文化崩溃的代价（译文/原文）
发信站: BBS 未名空间站 (Mon Feb 26 21:26:14 2018, 美东)
译者前言
这是一篇在美国非常有争议的文章，文章的作者是宾夕法尼亚大学法学院的教授Amy
Wax。这篇文章在美国的文化界和思想界掀起了轩然大波，美国左派群起而攻之。以至
于宾夕法尼亚大学的33名教授联名要求开除作者。而这篇文章所引发的保守派和自由派
的思想交锋在原文发表的半年后还在进行中，也许这是一场扭转美国左倾思潮的历史大
讨论。
译文
太少的美国人真正能够适应现代社会所需要的工作。适龄男性劳动参与率处于大萧条以
来的最低点，鸦片类毒品滥用现象非常普遍，凶杀和暴力困扰着内陆城市。几乎有一半
的孩子都是非婚生子女，而更多的孩子由单身母亲抚养。许多大学生缺乏基本的技能，
高中生的排名低于世界上其他二十几个国家！
（图一）美国适龄男性劳动参与率历史曲线 图由译者补充
这些现象的成因是复杂多样的，但这种或者... 阅读全帖 |
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