w*******y
发帖数: 60932 | 1 Link:
http://www.amazon.com/Vibrant-Health-Green-Vibrance-Family/dp/B
$41.90 with Subscribe & Save - Free Shipping
The cheapest I've seen this for is the current price, which is 49.29, and
this is the first time I've seen it eligible for subscribe & safe... 25
billion probiotics per serving.
Excellent product - check out the reviews.
Green Vibranc
The Greatest Food on Earth
* The #1 Green Food in the Country!
* Nutritional Powerhouse
* Loaded with trace nutrients
* Supports healt... 阅读全帖 |
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w*******y
发帖数: 60932 | 2 Amazon have a $2 off On ONE Tide Detergent Coupon (expires 11/26)
Use Subscribe & Save to get the best price where available
Here are some items I found
Tide with Bleach Alternative Clean Breeze Scent with Actilift, 50-Ounce:
http://www.amazon.com/Tide-Bleach-Alternative-Actilift-50-Ounce
- $3.99 after coupon ** Note Usually ships within 1 to 2 months. and no S&
S option for this one and free shipping only with Prime or Moms
Tide with Febreze, for High Efficiency Machines, Spring and Renewal S... 阅读全帖 |
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v**********m
发帖数: 5516 | 3 http://seekingalpha.com/article/894061-delcath-systems-an-exclu
Delcath Systems: An Exclusive Interview With ROTH Capital Senior Analyst
September 28, 2012 | about: DCTH
Disclosure: I am long DCTH. (More...)
Today I have the pleasure of publishing an exclusive interview that took
place this week between me and one of the leading senior analysts for
medical technology, Mr. Matt Dolan of ROTH Capital Partners. Mr. Dolan has
followed the industry for nearly a decade and has been the senior analys... 阅读全帖 |
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w****i
发帖数: 95 | 4 支持红十字会。据说mercycorp是效率挺高的组织，他们的花费是这样：
（http://www.charitynavigator.org/index.cfm?bay=search.summary&orgid=4078）
Organizational Efficiency
Program Expenses 88.1%
Administrative Expenses 7.2%
Fundraising Expenses 4.6%
Fundraising Efficiency $0.04
Efficiency Rating （four stars)
各项费用占11.9%左右。
这年头，救人要紧，需要拿钱铺路。我相信中国红十字会够卖力了。慈善组织总体效率
低，也不是什么秘密。公司里还有磨洋工的，内耗的，也不要对红十字会太苛刻。增加
透明度是好的，但对效率的预期也要合理。 |
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d***d
发帖数: 133 | 5
http://en.wikipedia.org/wiki/Photosynthetic_efficiency
Very detailed analysis on the efficiency of photosynthesis is given in the
link. The structures of crop leaves and chloroplast impose an upper limit
of 1-2% (with very rare exceptions) on photosynthesis efficiency. Unless
one can manage to overhaul such structures, it remains a fantasy to
dramatically increase the efficiency.
With all due respect to Qian's contributions and scientific credentials,
when he was commenting on something outs... 阅读全帖 |
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z*h
发帖数: 773 | 6 It is called serial hybrid vehicle, better efficiency than Toyota Prius. But
internal combustion engineer efficiency is limited by the second law of
thermodynamics. For gasoline otto engine, the highest efficiency is only 32%
, lower than diesel ICE. |
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p*****y
发帖数: 421 | 7 http://www.charitynavigator.org/index.cfm?bay=search.summary&or
American Red Cross
Overall Rating
(55.48)
Organizational Efficiency
Program Expenses 91.8%
Administrative Expenses 4.4%
Fundraising Expenses 3.6%
Fundraising Efficiency $0.17
Efficiency Rating
(35.83)
Organizational Capacity
Primary Revenue Growth 4.6%
Program Expenses Growth 1.2% ... 阅读全帖 |
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w****2
发帖数: 12072 | 8 '不过这＂两党专制＂的说法很新颖', 你看得太少了。美国人自己都很明白：one-
party is an efficient one party; two-party is an inefficient one party.
美国人都很明了的事情，你不知道。刚来美国吧？
原话：
dude. 9 hours ago Report Abuse
It's funny that we think a two party state is so much better than a
single party state. One party is an efficient one party. Two party is an in-
efficient one party...
参见连接 http://www.mitbbs.com/article_t/Military/35630277.html |
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w*********g
发帖数: 30882 | 10 中国试验五百公里的超级高速列车：美国网民炸锅(图)ZT
来源: llht 于 2011-12-30 07:57:23 [档案] [博客] 旧帖] [转至博客] [给我悄悄话
] 本文已被阅读：1472次 字体：调大/调小/重置 | 加入书签 | 打印 | 所有跟帖 |
加跟贴 | 查看当前最热讨论主题
中国试验五百公里的超级高速列车：美国网民炸锅(图)
2011-12-30 14:18:26 西陆网
记者25日从中国南车四方股份有限公司了解到，更高速度试验列车近日在中国南车四方
股份公司落成。这标志我国在高速列车前瞻性研究中取得了阶段性重大成果，有利于完
善中国高速列车技术体系，将使我国在高速铁路领域拥有更大的国际话语权。
新华网青岛12月25日电（记者张旭东）记者25日从中国南车四方股份有限公司了解到，
更高速度试验列车近日在中国南车四方股份公司落成。这标志我国在高速列车前瞻性研
究中取得了阶段性重大成果，有利于完善中国高速列车技术体系，将使我国在高速铁路
领域拥有更大的国际话语权。
12月23日，青岛，更高速度试验列车。臧磊 摄
据介绍，这列更高速度试验列车项目是在科技部和铁道部的... 阅读全帖 |
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s*****r
发帖数: 43070 | 11 us • Tampa, Florida • 2 days 10 hrs ago
Why invest money in your own infrastructure and new technologies?, screw
improving the quality of life for your citizens when you can spend trillions
on foolish wars and give the rest away to undeserving countries, wake up
America, take your #$%$ country back!!!!
为什么把钱投资在你们自己的基础建设和新技术开发上？（原文如此，是不是少了个
not？）改善你们的公民的生活质量，当你可以把大量地钱财耗费在愚蠢的战争上并将
剩下的钱给那些无关的国家。醒醒吧美国人，恢复你#$%$ 的国家！（#$%$是富裕么？）
Thomas 2 days 12 hrs ago
They're developing trains that go 375... 阅读全帖 |
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v****o
发帖数: 978 | 12 Chinese economic reform and development: achievements, emerging challenges
and unfinished tasks
Jane Golley and Ligang Song
The economic transformation that has taken place in China since the late
1970s is now regarded as one of the most significant social changes in human
history. Within just three decades, China has succeeded in transforming
itself from a centrally-planned closed economy into one of the world’s most
dynamic and globally-integrated market economies. The dynamics unleashed by
De... 阅读全帖 |
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c****3
发帖数: 1143 | 13 I am doing basic research on photovoltaic material.
The key is how to increase the efficiency to transfer solar energy to other
energy.
Up to now, we search material from solid semiconductors.
Based on superlattice ( combination of different semiconductors layer by
layer),
We can increase the efficiency ( absorb the sun light of broad spectrum)
But it is still low.
Thanks for Nano-technology, we will design the material on the atomic scale,
I mean, we will manipulate the photovoltaic nanomateri... 阅读全帖 |
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R****a
发帖数: 6858 | 14 大棋局与9/11
来源: ognc 于 2013-02-22 16:08:44[档案] [博客] [旧帖] [转至博客] [给我悄悄
话] 本文已被阅读：63次
字体：调大/调小/重置 | 加入书签| 打印| 所有跟帖 | 加跟贴| 查看当前最热讨论主题
The Moral Decoding of 9-11
By Prof. John McMurtry
(Journal of 9/11 Studies) - I was sceptical of the 9-11 event from the first
time I saw it on television. It was on every major network within minutes.
All the guilty parties were declared before any evidence was shown. The
first questions of any criminal investigation were erased. Who had the most
compelling motives for... 阅读全帖 |
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G*****n
发帖数: 3863 | 15 其实挺efficient的了。interstate banking限制恰恰增加了银行市场的efficiency，
防止几大银行收购所有的小银行造成垄断。因为垄断会造成inefficiency。
反而是最近十几年美国银行业的efficiency在降低。 |
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a***k
发帖数: 1038 | 16 【 以下文字转载自 paladin 讨论区 】
发信人: atack (小军号), 信区: paladin
标 题: 红死病 by 杰克.伦敦
发信站: BBS 未名空间站 (Sat Oct 11 07:40:15 2014, 美东)
I
The way led along upon what had once been the embankment of a railroad. But
no train had run upon it for many years. The forest on either side swelled
up the slopes of the embankment and crested across it in a green wave of
trees and bushes. The trail was as narrow as a man's body, and was no more
than a wild-animal runway.
Occasionally, a piece of rusty iron, showing through ... 阅读全帖 |
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s*****r
发帖数: 11545 | 17 http://finance.yahoo.com/news/ready-10-oil-230002605.html;_ylt=
By A Gary Shilling
At about $50 a barrel, crude oil prices are down by more than half from
their June 2014 peak of $107. They may fall more, perhaps even as low as $10
to $20. Here’s why.
U.S. economic growth has averaged 2.3 percent a year since the recovery
started in mid-2009. That's about half the rate you might expect in a
rebound from the deepest recession since the 1930s. Meanwhile, growth in
China is slowing, is minimal in t... 阅读全帖 |
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f**o
发帖数: 12685 | 18 http://adsabs.harvard.edu/abs/1981SoEn...26..231J
The thermodynamic properties of the direct component radiation are
considered, and the concept of essergy (the potential work of a system) and
availability in steady flow are employed in the ideal-work determination.
The maximum efficiency for the continuous conversion of extraterrestrial
radiation to work is given by the Carnot efficiency. The emission and
propagation of solar energy is shown to be equivalent to a heat interaction
with a thermal... 阅读全帖 |
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m*******e
发帖数: 1598 | 19 BY TINA AMIRTHA8 MINUTE READ
This story contains interviews with Christian Kästner, assistant
professor at Carnegie Mellon University; Amy Hirotaka, state policy and
advocacy manager at Code.org; and Janet Siegmund, researcher at the
University of Passau.
In order to expose more students to computer science, 17 states have passed
legislation to create basic math and science requirements in the curriculum,
rather than count them as electives. But lawmakers in Texas have made
computer program... 阅读全帖 |
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发帖数: 1 | 20 纽时是比较客观靠谱，可读性强的左派媒体，比CNN强多了
没读完，注意到如下几点：
1. 2010年一个未向公众披露的调查显示：某隧道工程1/3的工人吃空饷，每天1000美元
工资
2. 工会收买政客要挟建筑商
3. 纽约隧道工程操作同样的机器，做类似量的工作，
需要的人手是亚洲澳洲欧洲（法国等）国家3-4倍
4. 挖隧道工人时薪＋福利每小时111元，周末节假日时薪翻倍，超时再翻倍到 400／
per hour， 结果发现工人工作很容易超时（为啥工程整体进度还是那么慢想不明白）
。。lol
The Most Expensive Mile of Subway Track on Earth
How excessive staffing, little competition, generous contracts and archaic
rules dramatically inflate
capital costs for transit in New York. An accountant discovered the
discrepancy while reviewing the bu... 阅读全帖 |
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发帖数: 1 | 21 美海军今年5月开建首艘伯克III驱逐舰，雷达性能提升30倍，并能同时追踪4800个目标
Navy Will Start Construction in May on High-Tech Flight III DDG 51 Arleigh
Burke-Class Destroyer
The National Interest
Kris Osborn
January 18, 2018
The Navy will start construction of its first next-generation, high-tech
Flight III DDG 51 Arleigh Burke-Class Destroyer in May of this year - as
part of its broad service plan to deploy a new fleet of technically advanced
warships able to fire new weapons, better detect enemy attacks and prepare
for a high... 阅读全帖 |
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b********n
发帖数: 38600 | 22 民主制度一直被西方吹捧了上天，曾经一度是万灵药。 只要你不是民主，就给你开这
颗万灵药。 如果不愿吃，就冲到你家打你、杀你。
渐渐地这个万灵药出现不大好使的地方，比如没有它的对手那么efficient. 没法子
，民主还是继续得吹捧，就补了一句: well, 大家都知道俺们的民主从来就 not
meant for efficiency, 但是它还是好, blah blah blah, ...
眼下贸易战正在如火如荼地开打着， 因为中国的经济已经与美国的平起平坐了。 美国
再不奋起反击，老大位子就得让出来了，着急啊! 美国一个很大的不满意，就是中国
政府在后面着经济和产业，美国这么一个不efficient 的制度无法竞争。
原来是制度的差别导致竞争出现了高低。 那美国也可以让政府在背后支持呀? 不
行不行! 歪? 制度不允许! 那快点改革呀，当年中国怎么可以改? 俺们这个制度
是最好的，七十年前俺们的蚯吉尔就说过了，改革从来就是别人的事情。
所以，这个制度厉害就厉害在有无数愿意坚信和吹捧这个制度的人，包括这个坛子上每
天孜孜不倦转美国之音、自由... 阅读全帖 |
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C*I
发帖数: 4736 | 23 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 |
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C*I
发帖数: 4736 | 24 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 |
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C*I
发帖数: 4736 | 25 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 |
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C*I
发帖数: 4736 | 27 相比较而言，石正丽的《Bat origin of human coronaviruses/蝙蝠是人类冠状病毒的
来源》是扎扎实实的抓蝙蝠，解剖蝙蝠，分离病毒，对比DNA,RNA后得出得结论。
请lobbock读一读，说一说，走两步！
http://virologyj.biomedcentral.com/articles/10.1186/s12985-015-0422-1
Review
Open Access
Published: 22 December 2015
Bat origin of human coronaviruses
Ben Hu, Xingyi Ge, Lin-Fa Wang & Zhengli Shi
Virology Journal volume 12, Article number: 221 (2015) Cite this article
Abstract
Bats have been recognized as the natural reservoirs of a large variety of
viruses. Special attention has ... 阅读全帖 |
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l****z
发帖数: 29846 | 28 June 23, 2012 by Charlie Quidnunc
People sometimes say that the Republicans are the pro-business party, and
the Democrats are the pro-consumer party. I would prefer to think of it,
perhaps naively, that the Republicans are pro-market, and the other guys are
pro-regulation. When given the chance many business people will do whatever
it takes to make money, skirting as close to the law as possible, seeking
favors from powerful politicians to defeat their competitors, and generally
trying to maxim... 阅读全帖 |
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l****z
发帖数: 29846 | 29 It may still be a little outside the box thinking, but you need to start
educating yourself about alternative energy sources for your home. I do
believe that at some point the country will get its energy act together –
but for the foreseeable future Washington's war against market-driven energy
options suggests significant disruptions ahead.
Energy is nature's currency – that's what a friend and colleague with a
physics degree said that to me the other day. I gave the notion some thought
, and i... 阅读全帖 |
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c*****g
发帖数: 21627 | 30 Excellent article
英文原文：
Barron's Cover | MONDAY, JANUARY 28, 2013
The Next Boom
By KOPIN TAN
Cheap natural gas and increasingly competitive labor costs are bringing
factories and jobs back to the U.S. Eight ways to win.
As the only industrialized superpower not decimated by World War II, the
United States once made nearly 40% of the planet's goods. These days, that
number has shrunk to 18%. We make American Girl dolls in China, Levi's jeans
in Mexico, and enough movies in Vancouver to nickname ... 阅读全帖 |
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l****z
发帖数: 29846 | 31 Obama Energy Nominee: We Need a Carbon Tax to Triple the Cost of Energy or
Something
by Jammie
You ever notice Obama deliberately goes out of his way to nominate the
looniest extremists possible? What other reason could this be except for the
fact he’s also a far-left extremist?
President Obama’s Energy secretary nominee regards a carbon tax as one
of the simplest ways to move the energy industry towards clean technologies
, though he notes that government would have to come up with a plan ... 阅读全帖 |
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l****z
发帖数: 29846 | 32 Hyundai, Ssangyong Face Fines for Overstating Fuel Efficiency
Transport Ministry Says the Auto Makers Exaggerated Fuel Economy by as Much
as 8%
By In-Soo Nam
June 26, 2014 8:07 a.m. ET
SEOUL—South Korea's transport ministry said on Thursday it would fine
Hyundai Motor Co. 005380.SE +0.44% and Ssangyong Motor Co. 003620.SE
+0.47% for overstating the fuel economy of their sport-utility vehicles.
The decision by the Ministry of Land, Infrastructure and Transport, however,
comes as anoth... 阅读全帖 |
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l****z
发帖数: 29846 | 33 Dear Striking Fast-Food Workers: Meet The Machine That Just Put You Out Of A
Job
Submitted by Tyler Durden on 11/10/2015 17:06 -0500
Today, U.S. fast-food workers will strike across 270 cities in a protest for
higher wages and union rights that they hope will catch the attention of
candidates in 2016 elections, organizers said.
The walkouts will be followed by protests in 500 cities by low-wage workers
in such sectors as fast food and home and child care, a statement by
organizers of the Fight f... 阅读全帖 |
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发帖数: 1 | 34 http://blog.sina.com.cn/s/blog_ab964a220102xcty.html
How could Trump say differently in the first presidential debate 2016?
(Scene: after Hillary answered the first question about economy, putting
more money into the pockets of American workers)
Trump: Look at her, this is a typical politician. She is a lady. (Audience
laughing) I know why you are smiling. Now you see how unpredictable I am.
Never know what I am going to say next. She is a lady and I am supposed to
be nice to her. Here are my co... 阅读全帖 |
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w****t
发帖数: 1849 | 35 1. Avoid “jack-rabbit” starts; accelerate gently—Accelerating the mass of
a car uses more fuel than any other facet of driving; imagine there’s a
raw egg between your right foot and the accelerator pedal which you don’t
want to break.
Slow down—Not necessarily a lot, but how about actually following the
speed limit? Typically, the faster you go, the higher the aerodynamic and
drivetrain friction losses, so it takes more fuel to maintain a higher speed
. Remember however, that traveling slower th... 阅读全帖 |
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w**e
发帖数: 2424 | 36 San Francisco Area Officials Considering Per-Mile Driving Tax
Golden Gate Bridge photo by Flikr user omninate.The downside of fuel
efficiency: Going farther on a gallon of gas means less money going into
local and state coffers in the form of fuel taxes to fund transportation
infrastructure, such as roads and bridges. While gas taxes have worked for
decades as the most efficient way to spread the pain by making drivers pay
at the pump, more fuel-efficient vehicles combined with fewer miles drive... 阅读全帖 |
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i****x
发帖数: 17565 | 37 我只是在消费市场上说大规模应用的情况。发明这个技术当然很早。我查了一下，下面
是现代GDI的主要商业应用，最成规模的就是toyota的v6，VW的FSI，BMW的N54，ford的
ecoboost。这几个里NA只有toyota。的我随意说几个大品牌而已，不用较真说每句都错
了吧。
Later systems
In 1996 gasoline direct injection reappeared in the automotive market.
Mitsubishi was the first with a GDI engine in the Japanese market with its
Galant/Legnum's 4G93 1.8 L inline-four.[11] It was subsequently brought to
Europe in 1997 in the Carisma,[12] although Europe's then high-sulfur
unleaded fuel led to emissions problems, and fuel eff... 阅读全帖 |
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i*****d
发帖数: 603 | 38 Hyundai Sonata Ranked Most Dependable Midsize Car By J.D. Power and
Associate
COSTA MESA, Calif., Feb. 13, 2013 /PRNewswire/ -- Hyundai's Sonata received
the distinct honor of most dependable midsize car by J.D. Power and
Associates in their 2013 Vehicle Dependability Study (VDS). Released today,
the annual Vehicle Dependability Study shows Sonata ranked highest in its
class, beating out leading competitors.
(Logo: http://photos.prnewswire.com/prnh/20091001/HYUNDAILOGO)
The Sonata offers strikin... 阅读全帖 |
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i*****d
发帖数: 603 | 39 Hyundai Sonata Ranked Most Dependable Midsize Car By J.D. Power and
Associate
COSTA MESA, Calif., Feb. 13, 2013 /PRNewswire/ -- Hyundai's Sonata received
the distinct honor of most dependable midsize car by J.D. Power and
Associates in their 2013 Vehicle Dependability Study (VDS). Released today,
the annual Vehicle Dependability Study shows Sonata ranked highest in its
class, beating out leading competitors.
(Logo: http://photos.prnewswire.com/prnh/20091001/HYUNDAILOGO)
The Sonata offers strikin... 阅读全帖 |
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q**j
发帖数: 10612 | 40 我还是先抛砖引玉。
半径：
假设车做匀速直线运动，轮子上的力要抵消风的阻力。阻力是一定的。所以轮子上的力
是一样的，但是大半径的轮子需要轴上的力更大（杠杆原理），所以engine rpm 要高一
些（普通na engine）。rpm高了，engine是否efficient要看rpm 的阶段，所以在engin
e最 efficient的rpm之下，是大轮子省油。之上是小轮子省油。考虑到一般efficient
rpm在 55-60 mph，一般开车在65mile以上cruise，所以应该是小轮子省油。对不对？ |
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A***n
发帖数: 8859 | 41 不要过长时间一个速度，别跑太快，一千英里内，ok。
如果要专业些，读下文：
Updated 10/2012
New generation TDI's with Common Rail/DPF/SCR and those with DSG
transmissions
Rules that apply for the life of the car
-When the engine is cold (below the first 3 white marks at the base of the
temp gage) rev the engine to at least 2,500 rpms.
-When the engine is warmed up (above the first three white marks) Rev the
engine to no less than 3,000 rpms.
The reason for this is to keep the turbo on boost, clear the VNT guide vanes
and apply firm ... 阅读全帖 |
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D***n
发帖数: 6804 | 42 哦！作为一个文科生，这个都不用想啊：
Turbo Charge提高了两个方面的效率：
Volumetric efficiency：也就是更多的空气，和更多的燃油在一次循环中混合做功。
这也是为什么Turbo车通常是低转速就达到大扭矩的原因之一。
Carnot efficiency：通过回收废气提高了一次进入缸体的空气密度，所以1）确保燃油
的充份燃烧性，特别是缸内直喷技术的采用。2）在压缩阶段导致气体有更高的温度，
提高了Carnot Efficiency。
文科生脑袋就能想明白的东西，还Beyond the point。 |
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D***n
发帖数: 6804 | 43 发信人: Decon (Decon), 信区: Automobile
标 题: Re: 来讨论 Turbo 吧
发信站: BBS 未名空间站 (Fri Sep 6 13:59:56 2013, 美东)
Turbo Charge提高了两个方面的效率：
Volumetric efficiency：也就是更多的空气，和更多的燃油在一次循环中混合做功。
这也是为什么Turbo车通常是低转速就达到大扭矩的原因之一。
Carnot efficiency：通过回收废气提高了一次进入缸体的空气密度，所以1）确保燃油
的充份燃烧性，特别是缸内直喷技术的采用。2）在压缩阶段导致气体有更高的温度，
提高了Carnot Efficiency。 |
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f****t
发帖数: 15913 | 44 The RDX all-wheel drive system is designed to help maximize the use of
available traction in both dry and slippery conditions, while minimizing
system-wide friction and power loss to help optimize fuel efficiency.
In normal cruising, the system operates as an efficient FWD vehicle with
100% of engine torque being directed to the front wheels.
During moderate acceleration or when front wheel slip is detected in dry
conditions, 25% of engine torque is transferred to the rear wheels.
On... 阅读全帖 |
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i****x
发帖数: 17565 | 45 有道理就讲出来，吐一句显得自己的能耐然后又把剩下的咽回去太没意思。
我是不懂电子控制，不过基本原理是错不了的，下面是wiki上的介绍，你可以看看我说
的对不对。
Many high-performance engines are designed to operate with a high maximum
compression, and thus demand fuels of higher octane. A common misconception
is that power output or fuel efficiency can be improved by burning fuel of
higher octane than that specified by the engine manufacturer. The power
output of an engine depends in part on the energy density of the fuel being
burnt. Fuels of different octane ratings may h... 阅读全帖 |
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y***k
发帖数: 9459 | 46 【 以下文字转载自 USANews 讨论区 】
发信人: lczlcz (lcz), 信区: USANews
标 题: 现代汽车因为谎报油耗数字面临政府罚款
发信站: BBS 未名空间站 (Thu Jun 26 19:25:07 2014, 美东)
Hyundai, Ssangyong Face Fines for Overstating Fuel Efficiency
Transport Ministry Says the Auto Makers Exaggerated Fuel Economy by as Much
as 8%
By In-Soo Nam
June 26, 2014 8:07 a.m. ET
SEOUL—South Korea's transport ministry said on Thursday it would fine
Hyundai Motor Co. 005380.SE +0.44% and Ssangyong Motor Co. 003620.SE
+0.47% for overstating the fuel econom... 阅读全帖 |
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A********e
发帖数: 354 | 47 【 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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h**********g
发帖数: 3962 | 48 一下是图灵官网的描述。我觉得他在密码学方面的贡献是很重要的一部分。
Yao spent a year as a Professor in the Computer Science Division of the
University of California, Berkeley, and subsequently returned to Stanford as
a full Professor in 1982. During the early 1980’s, Yao produced a number
of papers which had a lasting impact on the foundations of cryptography,
computer security, computational complexity and randomized computation. This
work was significant not only for results obtained, but also for the
introduction of problems,... 阅读全帖 |
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r******t
发帖数: 8967 | 49 【 以下文字转载自 EE 讨论区 】
发信人: yuverson221 (), 信区: EE
标 题: 跪求前辈内推Semiconductor Process Engineer，entry level的工作
关键字: 半导体，工作
发信站: BBS 未名空间站 (Fri Jan 20 16:56:26 2017, 美东)
小弟是刚毕业的硕士学生。在实验室主要是做Graphene solar cell的，有两年的实验
室经验，已经thesis答辩完，马上准备发paper。最近找工作找的快崩溃了，求相关的
公司的前辈，帮忙内推。
贴上我的工作经历。
• At UIC, my thesis research focus is to develop transfer-free
graphene-on-silicon heterojunction solar cells and plasmonics enhancement of
photo-conversion efficiency and received 1.5% PCE
• Tested and op... 阅读全帖 |
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G********d
发帖数: 366 | 50 只有high efficiency的洗衣机才用high efficiency的洗衣液，并不是滚筒洗衣机就用
high efficiency的洗衣液的。你是不是用错了？ |
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