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全部话题 - 话题: catalytic
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E*********o
发帖数: 5965
1
来自主题: Automobile版 - 日本人为什么收高价却用烂钢
转一个:
铸铁发动机,我也说两句 (日本车托看完后闭嘴吧,别老拿全铝发动机说事)
实在看不下去了,一群开着日车的小样如此得瑟。。。。
以下是我在wikipedia.com上原文粘贴下来的,关于EA888发动机的技术参数。
EA888
160 hp (119 kW) - 170 hp (127 kW) 1.8 TFSI I4
Configuration
1798 cc water cooled inline 4, bore 82.5 mm/stroke 84.1 mm
Head
9.6:1 compression ratio, toothed chain driven camshaft, continuous adjusting
intake
Block
88 mm cylinder spacing, 33 kg grey cast iron (GJL 250) <----------看见了吗?
33千克灰铸铁 (GJL 250)
Crankcase
two toothed chain driven counter-rotating balancing shafts suppressin... 阅读全帖
N****n
发帖数: 294
2
你说的也许对。但是我有两次不好的经验颠覆了我对修车店的看法。第一次:我的一个
轮胎扎坏了,因为都是新轮胎,所以只换这一个轮胎。Munroe修车店的管理建议我换
catalytic converter,Muffler.估价1200多刀。而且要马上换,不然引擎会坏。我据绝
了。结果出了车店门两分钟,轮胎气压不足的指示灯就亮了。会来看看气压都对。绕车
转几圈也不知道为什么。后来想他说catalytic converter 有问题,随便爬地下前后看
,结果无意间看见那个连着测轮胎转速的盖子挂在那里。仔细看看,是用改锥撬下来的
。这个东西是粘在轮轴上的,不可能自己掉下来。把它粘回去,轮胎压力指示灯就没有亮
了。
第二次还是在Munroe换另一个轮胎(BJ保险的原因)。这次另一个Manager要我换闸。我
说今天要早走,下次吧。接果,等了一个小时,车出来了,让我去取。可是车怎么也打
不起火了。那个manager还装模作样的过来看。他试了一下也没有打起来。实际上是打
起来立马就灭。然后他说肯是供油系统有问题,刚开始进车库前他就觉得打火困难.他可
以检查,但要收费.我心里想,你这是黑店啊.我的车一直工... 阅读全帖
x*********0
发帖数: 675
3
非常感谢您的回复!确实我问了dealer说如果cat坏了可以一起保修catalytic
convertor
但是单独坏了catalytic convertor,而且我那个锈穿的位置只能自费全换了
别的几个local都说要全换,可能车型是sports car比较贵,四位数。
非常感谢各位回复!

flex
g*******u
发帖数: 332
4
来自主题: Automobile版 - 车上掉下来一个根管子。
去看了一眼, 这个catalytic converter粗粗短短,
http://www.carparts.com/hyundai/catalytic-converter
我车上掉下来的管子很长的说,一头还连在车上,一段拖在地上。
B*Z
发帖数: 7062
5
来自主题: Automobile版 - Ward 二十世纪十大发动机
The 10 Best Engines of the 20th Century
Don Sherman | WardsAuto
Jan 1, 2000
It took a century for automotive engines to mature from cantankerous
contraptions to the smooth, reliable machinery that currently enables our
mobility. The following honor roll celebrates the 10 best - those engines
that motored far beyond the call of duty to advance the internal-combustion
cause.
Ford Motor Co. Model T Inline-4 (1909) After eight lackluster designs, Henry
Ford finally hit paydirt with his 1909 Model T.... 阅读全帖
X***9
发帖数: 7385
6
从1983年起已经入围29次,也是入围次数最多的车型纪录保持者。这个10佳车里面很讽
刺的是TOYOTA(丰田)轿车(任何一款)居然一次也没有入围过,NISSAN(尼桑)也只
凭其一款经典车型(已经停产)入围7次,相比HONDA(本田)有6款车型入围,分别是
ACCORD 29 次
PRELUDE 10 次
FIT 7 次
ODYSSEY 7 次
PILOT 6 次
CIVIC 6 次
本田也是评比10大车牌和10大厂牌的榜首,而且优势地位明显,获奖次数甩第2名丰田
几条街(接近于3倍)。<车牌和厂牌不同的地方就是比如说chevy雪弗莱是车牌,但是
他的厂牌是gm也就是通用>
HONDA不但注重安全性,本田旗下有12款车型获得IIHS TOP SAFETY PICK殊荣。更有6款
车型获得2014 TOP SAFETY PICK plus,也是当时业界获此殊荣数量最多的厂牌。两款
车civic和odyssey更是全美第一个获得同级里最安全评比的车型。
*2013 honda civic is the first small car to achieve top... 阅读全帖
X***9
发帖数: 7385
7
来自主题: Automobile版 - DID YOU KNOW?-本田HONDA知识系列(12)
Did you know?
你知道吗?
本田是这样对待冷嘲热讽的
1973年本田准备把搭载CVCC技术引擎的civic投放市场
CVCC stands for "Compound Vortex Controlled Combustion"
CVCC技术是通过更精密的对发动机燃烧控制,实现前所未有的稀薄燃烧方式降低发动机
排放污染。
CVCC不但提前率先达到环保排放标准,而且不用使用当时成本很高的catalytic
converter。
福特和克莱斯勒都承认本田的技术而且达成协商获得技术授权,只有通用公司除外。
通用公司ceo Richard Gerstenberg 说:
“我看了这个设计,这种充其量也就能在小型摩托车玩具引擎上使用的东西,我看不到
在我们GM生产的引擎上有任何的实用价值”
这句话传到了本田耳朵里,本田立刻对gm引擎产生兴趣,随后买了一台1973 Chevy
Impala 5.7L V8空运回日本,然后用CVCC技术修改了引擎再空运回美国Ann Arbor做EPA
测试。
Gerstenberg没有想到,他嘴里的玩具引擎技术把他大排量的v8引擎也通过了被觉得不
可能通过... 阅读全帖
X***9
发帖数: 7385
8
来自主题: Automobile版 - DID YOU KNOW?-本田HONDA知识系列(12)
Did you know?
你知道吗?
本田是这样对待冷嘲热讽的
1973年本田准备把搭载CVCC技术引擎的civic投放市场
CVCC stands for "Compound Vortex Controlled Combustion"
CVCC技术是通过更精密的对发动机燃烧控制,实现前所未有的稀薄燃烧方式降低发动机
排放污染。
CVCC不但提前率先达到环保排放标准,而且不用使用当时成本很高的catalytic
converter。
福特和克莱斯勒都承认本田的技术而且达成协商获得技术授权,只有通用公司除外。
通用公司ceo Richard Gerstenberg 说:
“我看了这个设计,这种充其量也就能在小型摩托车玩具引擎上使用的东西,我看不到
在我们GM生产的引擎上有任何的实用价值”
这句话传到了本田耳朵里,本田立刻对gm引擎产生兴趣,随后买了一台1973 Chevy
Impala 5.7L V8空运回日本,然后用CVCC技术修改了引擎再空运回美国Ann Arbor做EPA
测试。
Gerstenberg没有想到,他嘴里的玩具引擎技术把他大排量的v8引擎也通过了被觉得不
可能通过... 阅读全帖
X***9
发帖数: 7385
9

本田是这样对待冷嘲热讽的
1973年本田准备把搭载CVCC技术引擎的civic投放市场
CVCC stands for "Compound Vortex Controlled Combustion"
CVCC技术是通过更精密的对发动机燃烧控制,实现前所未有的稀薄燃烧方式降低发动机
排放污染。
CVCC不但提前率先达到环保排放标准,而且不用使用当时成本很高的catalytic
converter。
福特和克莱斯勒都承认本田的技术而且达成协商获得技术授权,只有通用公司除外。
通用公司ceo Richard Gerstenberg 说:
“我看了这个设计,这种充其量也就能在小型摩托车玩具引擎上使用的东西,我看不到
在我们GM生产的引擎上有任何的实用价值”
这句话传到了本田耳朵里,本田立刻对gm引擎产生兴趣,随后买了一台1973 Chevy
Impala 5.7L V8空运回日本,然后用CVCC技术修改了引擎再空运回美国Ann Arbor做EPA
测试。
Gerstenberg没有想到,他嘴里的玩具引擎技术把他大排量的v8引擎也通过了被觉得不
可能通过的最新EPA标准,而且也没有使用cat... 阅读全帖
a****2
发帖数: 3735
10
太精彩了!
This is a story of hubris, determination, emissions, an Impala, and, of
course, the amazing Soichiro Honda. It's a reminder that innovation can beat
strength, and that the most defining characteristic of any giant is not its
size, but it's susceptibility to cleverness.
I'm sort of amazed we've never officially talked about this here on Jalopnik
, because it's an amazing story. It's a story you may have heard before, but
it's absolutely worth repeating.
The most often cited version of the s... 阅读全帖
b******o
发帖数: 37
11
02年的车了,不需要过emission年检的话可以不管。
P0430不一定是O2挂了,有可能是exsaust leak,或者最坏就是catalytic converter坏
了。
一般老4缸发动机只有一个catalytic cat和两个O2(少数有两个cat三个O2)。换第二
个O2。
第二个O2一般都在车下面,得把车架起来,注意安全,我一般开ramp上,然后上jack。
找到O2,应该是7/8size的wrenth。有些拧的很紧。得上extension,或者喷点pb。基本
上是力气活。
u******a
发帖数: 151
12
来自主题: Automobile版 - Engine light code p0420解读
我的车最近Engine light 亮了,到autozone查了code,然后给出以下信息
P0420
Definition:catalyst efficiency low Bank 1
Explanation:the oxygen sensors monitor the catalytic converters ability to
store oxygen
Possible cause:
1 catalytic converter defective
2 Engine misfire or running condition
3 large vacuum leak
4 Engine oil leakage into exhaust valve guide seals, piston rings
还向各位大侠请教,这个问题严重么?如果修理,会花大概多少?还有其实这个Engine
灯在一年前也亮过,查了也是这个问题,但是过了几天就灭了,所以没管他,但是时隔
一年后又亮了,所以不知道问题严不严重,还请各位大侠求教到底是什么问题?我的车
是Ford Taurus
s****i
发帖数: 857
13
我现在在CA, 但是车在外州注册的,由于工作原因直接开到了CA.
我的车没有catalytic converter,CA肯定注册不了, 打算等下年7月份原来的注册到期
了再说, 再加catalytic converter动力会损失不少.
请问在CA开着外州注册的车会有什么问题吗?
我现在的保险怎么买? 按照原来的居住州还是按照现在的CA的地址买? 车在CA但注册在
外州.
v*******n
发帖数: 8995
14
首先排放超标的,
也就是电脑作弊的是Nox,这个东西号称link to lung cancer
但所谓的研究就是看看住在路边的人得lung cancer的比列是不是更高,样本量一版
10000左右,
这不废话么。
马路上的废气剁了去了,烟大灰大,还吵,你能赖光赖NoX
最近的一个比较负责的研究,统计乐大约30万人得出的结论是
With full adjustment for all measured confounders, the pooled results from
the cohorts showed that each increase in concentration of PM10 (each 10
micrometers/m3 increase) led to a corresponding increase in lung cancer risk
(hazard ratio 1.22, 95% confidence interval [CI] 1.03 to 1.45).
注意啊。。。。
However, for the other types of pollutan... 阅读全帖
i*******n
发帖数: 508
15
来自主题: Automobile版 - 车噪声请教
跟大家更新一下:
后来车的muffler的管子生锈断开了,声音特别大,去修车铺修的时候顺便看了一下这
个问题。结果从地下看发现是catalytic converter cover也生锈破了而且螺丝固定不
住,所以震动的时候就刺啦刺啦响。他们就把cover拿掉了,现在catalytic converter
没有cover(heat shield)了,这个是不是没有关系,看网上有人说没事,有人说有用。
如果有用,我就再买一个cover让他们安上。多谢
h******1
发帖数: 1930
16
各位大哥好。
自己的08 Mitsubishi Outlander自从2个月前两个一个code之后重病不起,简直是愁死
我了。 一开始就报了一个ignition coil的灯,我网上买了Part,开到华人师傅那里换
好了。开车回家还没到家灯又亮了。 当天堵车,不高兴回去查了,第二天开回去,
code读出来是P0431. 华人师傅说是o2 sensor的问题,说很多人不想立马修的话先将
就着开一下也成。
之后一直忙,我也懒得开到他那里去修,因为距离稍微有点远。就在附近一个美国小店
修了o2 sensor. 不到400块钱。。 修好了之后,开上高速,灯又亮,开回美国小店,
technician 给查完,说catalytic converter有积碳,他帮忙清了说Hope it can last
you a while. 100迈之后灯又亮了。。实在是懒得天天搞,就没管大概一个月,期间
偶尔用用。 直到最近因为summer要去外地做个intern,每天需要上下班通勤,想着车
的问题必须解决,就又开回去让他给看。 目前来说估计catalytic converter必须得换
了而且还有别的问... 阅读全帖
l***d
发帖数: 1798
17
FOR IMMEDIATE RELEASE
National Academy of Engineering Elects 66 Members and 10 Foreign Associates
WASHINGTON — The National Academy of Engineering (NAE) has elected 66 new m
embers and 10 foreign associates, announced NAE President Charles M. Vest to
day. This brings the total U.S. membership to 2,254 and the number of forei
gn associates to 206.
Election to the National Academy of Engineering is among the highest profess
ional distinctions accorded to an engineer. Academy membership honors th... 阅读全帖
n**********o
发帖数: 1016
18
来自主题: Faculty版 - 新当选的99名NAE members
https://www.nae.edu/MediaRoom/178117.aspx
Abadi, Martín, principal scientist, Google Inc., Palo Alto, Calif. For
contributions to the formal theory of computer security.
Abrahamson, Norman A., chief engineering seismologist, Pacific Gas &
Electric Co., Piedmont, Calif. For contributions to seismic hazard
assessment and for leadership in engineering seismology and earthquake
engineering.
Adams, Robert W., senior fellow, Analog Devices Inc., Acton, Mass. For
contributions to digital storage and... 阅读全帖
m**********t
发帖数: 385
19
Shanghai Advanced Research Institute,Chinese Academy of Sciences(
hereinafter referred to as “SARI”), is jointly initiated by Chinese
Academy of Sciences and Shanghai Municipality. As a comprehensive
application-oriented institute, SARI is mainly engaged in S&T innovation,
technology commercialization and talent cultivation in the fields of IT,
energy and environment, advanced materials, and life science, etc.
As a sub-division of Energy and Environment Research Department at SARI, Low
Carbon En... 阅读全帖
x******g
发帖数: 289
20
来自主题: Returnee版 - 上海科大新进人员论文水平堪忧
物质学院(包括物理、材料、化学等学科)
该学院一共一个正教授,三个助理教授
正教授代表作
1. A First Example of “Wittig Reaction” on a Coordinated Carbon Dioxide
Nickel Complex. Journal of American Chemical Society.
2. Theoretical Study of Carbon Dioxide Coordination in Palladium Complexes.
Applied Organometallic Chemistry.
3. Theoretical Investigation of Ketene Bonding Modes in Bis(phosphine)
Palladium Ketene Complexes. Journal of Coordination Chemistry.
4. Double Insertion of Methylene into Nickel-Phosphorus Bonds: Synthesis and
Structur... 阅读全帖
a*******m
发帖数: 14194
21
传统汽车上用贵金属最多的地方,就是那个三元催化尾气处理装置。
这玩意也就200美元。
铂金要1000多美元一盎司, 你说能有多少量?
你要是造大功率电极, 用的量是多少,
你自己不会没有数吧?
Catalytic Converter
http://www.autozone.com/exhaust/catalytic-converter?filterByKey
f*******3
发帖数: 122
22
RE: Applicant’s Name
To Whom It May Concern:
This letter is written to recommend Dr. XXX as a scientist/researcher of
outstanding accomplishments and extraordinary ability in the field of
Chemistry, specifically, development of new reactions based upon Metal-
catalyzed C-H activation processes.
I am a Professor of Organic Chemistry at ___________________________. My
group is focused on development of catalytic reactions catalyzed by platinum
and gold catalyst. My group is also engaged in metal-c... 阅读全帖
t*******i
发帖数: 65
23
来自主题: Immigration版 - 审稿1片(物理化学-催化)
Keywords: Simultaneous desulfurization and denitrification; CuCo/zeolite;
Microwave catalytic; Microwave catalytic reduction; Kinetic
It is a new peer-review Journal with international circulation.
请用工作信箱,发简历给我 (include publications): c********[email protected]
谢谢合作!
w***n
发帖数: 150
24
来自主题: Immigration版 - 转review: RSC Advances
TITLE: Numerical and experimental investigations into erosion and fouling on
the surface of Fluid Catalytic Cracking (FCC) flue gas turbine rotors
Keywords:
erosion and fouling phenomena inside the Fluid Catalytic Cracking (FCC) flue
gas turbines in the refineries, numerical investigations and the
experimental analyses, gaseous phase flow field distributions, particles’
motion trajectory, CFD based numerical simulation method, experimental study
by means of instrumental analysis methods.
要求RSC注... 阅读全帖
m*********3
发帖数: 5381
25
来自主题: Missouri版 - 被carx骗了? (转载)
【 以下文字转载自 Automobile 讨论区 】
发信人: misschina33 (上班时间不上网), 信区: Automobile
标 题: 被carx骗了?
发信站: BBS 未名空间站 (Sat Sep 24 08:13:50 2011, 美东)
两周前发贴子
发现service engine soon 的灯亮了 先去autozone 查的code是0421 开去carx花70刀
检查 说是catalytic converter 坏了 需要换 要价390 换完后 开始灯灭了 但是不到2
周 灯又亮了
又开到他们那里 告诉我上次是0420 这次是0421需要换前面的catalytic converter说
上次是后面的
这次1400刀
我是不是被骗了 怎么找他们?
★ 发自iPhone App: ChineseWeb - 中文网站浏览器
c*********6
发帖数: 858
26
来自主题: SanDiego版 - 有人捐过车吗
如果你修车超过$400还没有修好,可以直接找referee去,可以最后开两年。
另外要检查下air filter有没有上紧,这也会影响catalytic converter测试结果。如
果smog没过,会有单子显示是因为smog check的参数没准备好,还是因为废气超标。
另外换了catalytic converter是不可以直接测试的,因为ECU还没有准备好,需要执行
专门的行驶模式,网上有介绍的。另外一般行驶一周几百mile的样子,参数才可以准备
好。
用ODB ii读一下code,也可以看参数有没有准备好。
i***0
发帖数: 8469
27
Hello,
I came across your resume and wanted to check if you are available for new
opportunities? We are currently hiring for a senior software developer
position for our clients based in Bellevue, WA. I would like to chat with
you about your experience as I think you would be a good fit for position
below. If you are interested, please reply and include a copy of your resume
in Word format.
Thank you and I look forward to speaking with you!
Prithvi Catalytic, Inc. defines and manages programs fo... 阅读全帖
f******3
发帖数: 534
28
how old is your car?
i had a toyota which had both bad catalytic converter and O2 sensors, (the
check engine light is on and very annoying). i had those all replaced. O2
senser cost me 150$ and catalytic converter is still under warranty(8 years).
btw, i also know a place will give you certificate as long as you pay them $
$$, i had all my window tinted (cause the sunshine is so strong in Utah) so
i have to go there every time.
B******1
发帖数: 9094
29
来自主题: WashingtonDC版 - 我这五年的事 (转载)
发信人: cyberholic (cyberholic), 信区: Chemistry
标 题: Re: 我这五年的事
发信站: BBS 未名空间站 (Tue Dec 25 14:18:06 2012, 美东)
当时组里唯一一个亚洲人就是一个四年级的日本师兄,很典型的那种让你记不住的日文
音传写(不知道他的汉字名字)。我们接触的次数实在有限,我现在对他的印象就是长
头发,戴眼镜,然后就是他的抑郁与忧愁。我最后一次见到他,是在一天晚上,他在吃
饼干,心不在焉地翻着那本strategic application of named reactions的书。他和我
说,他已经决定quit phd回日本了。也许是见我当时面有惊恐之色,他接着说,Steve
还是一个不错的老板,我决定quit了,他也很尊重我的决定,还给我写了推荐信。。。
于是很快,他就消失了,我便继承了这个师兄的hood,bench,和desk。我曾经试图了
解到底发生了什么,结果发现,他在人们的记忆中消失的很快,正如他的名字在网页上
消失一样。我听说的是,他因为全组从B大学搬到了A大学,到了一个新地方不适应,所
以抑郁了。一个... 阅读全帖
v*******n
发帖数: 8995
30
【 以下文字转载自 Automobile 讨论区 】
发信人: vandieman (颗粒腐烂三分王科沃尔), 信区: Automobile
标 题: 给左逼们科普一下大众的菜油车的作弊
发信站: BBS 未名空间站 (Tue Jan 10 15:33:19 2017, 美东)
首先排放超标的,
也就是电脑作弊的是Nox,这个东西号称link to lung cancer
但所谓的研究就是看看住在路边的人得lung cancer的比列是不是更高,样本量一版
10000左右,
这不废话么。
马路上的废气剁了去了,烟大灰大,还吵,你能赖光赖NoX
最近的一个比较负责的研究,统计乐大约30万人得出的结论是
With full adjustment for all measured confounders, the pooled results from
the cohorts showed that each increase in concentration of PM10 (each 10
micrometers/m3 increase) led to a corresponding ... 阅读全帖
t****e
发帖数: 4821
31
不想是从后面的 muffler 来的,这声音肯定是从发动机底部到 catalytic converter
那一带出来的。 难不成新车就要开回去换 catalytic converter?
b*s
发帖数: 82482
32
来自主题: WebRadio版 - 奔首诗----夏日的向晚
还有就是,摩托车最不环保
http://latimesblogs.latimes.com/greenspace/2011/09/mythbusters-
The MythBusters' conclusion: "At best, it's a wash. Motorcycles are just as
bad for the environment as cars," Savage said on the show. "At worst, they'
re far worse."
While many modern motorcycles are now fuel-injected and equipped with
catalytic converters and charcoal canisters to control emissions, they still
pale in comparison to the emissions controls of cars. That point was made
in a followup emissions test perfor... 阅读全帖
z*********n
发帖数: 94654
33
哦,忘了说了,最近这次smog check,所有参数都几乎超标,就是没超,但是有个
check engine light,就是catalytic systems fail
我amazon上买了个蓝牙的check engine light reader,reset之后,开到各项指数
ready后,engine light已经亮了,但是重试重试,终于有一次,各项指数ready了,
check engine light没亮,赶紧去recheck,过了,一看,依然,各项指数边界线,哈
哈,差点没过。肯定我的catalytic 系统有问题了,反正这次过了管两年,拖吧
h*******x
发帖数: 12808
34
今天去车检,发现catalytic converter和intermediate pipe接口有一个洞,换了一段
catalytic converter和intermediate pipe,加上一个tranny下面的gasket,又花了
600多。
结果回来的路上,发现新换的pipe没有拧紧,开到50mile左右,晃悠的厉害,能听到响
声。这样下周还得过去拧紧一下,真是悲剧了。
n*********m
发帖数: 38
35
Look his publication
Conversion of D-ribulose 5-phosphate to D-xylulose 5-phosphate: new insights
from structural and biochemical studies on human RPE.
Liang W, Ouyang S, Shaw N, Joachimiak A, Zhang R, Liu ZJ.
FASEB J. 2011 Feb;25(2):497-504. Epub 2010 Oct 5.
PMID:
20923965
[PubMed - indexed for MEDLINE]
Related citations
2.
Structural basis for the inhibition of human 5,10-methenyltetrahydrofolate
synthetase by N10-substituted folate analogues.
Wu D, Li Y, Song G, Cheng C, Zhang R, Joac... 阅读全帖
s********n
发帖数: 2939
36
来自主题: Biology版 - 今天见到David Baker.
Protein engineering满大街都在做,大部分都是修修补补,只有几个小组是真正在做
de novo design,他是#1。他的报告让我印象最深的有两点:
1. de novo design - 他有一个protein scafolds的数据库,里面的scafolds都已经通
过实验证明是可以表达,而且与预测结构相符合的。然后分析target reactions的
transition stages,提出可能的catalytic residues和binding residues及其空间分
布,然后就从数据库里调scafolds,找到能够维持催化和底物结合构象的scafolds,一
般有好几十个candidates,然后就是实验验证了(基因合成,蛋白表达和活性测定)。
一般能够得到Kcat/Km=1E4-1E5的artificial catalysts,这就差不多是catalytic
antibodies的水平了,当然离天然酶还挺远(1E8 - 1E12),但可以以此为模板做
directed evolution。感觉其最重要的一点是在于可以设计一些biocatalysts... 阅读全帖
A******y
发帖数: 2041
37
来自主题: Biology版 - 请教一下Ub E3 ligase
What's the best assay to test a enzyme's ability to ubiquitinate. I'm
studying a well know enzyme with two catalytic sites and I found a meeting
abstract saying one of the domain has nothing to do with its normal function
but it is a E3 ligase. The full paper is not published, so I don't know
how solid the data is. I have the recombinant enzyme plus mutants for each
catalytic site. The interesting part is the enzyme itself have been
published to bind several known E3 ligase, I wounder the ab... 阅读全帖
f****b
发帖数: 2410
38
来自主题: Biology版 - 我这五年的事 (转载)

在这里潜水多年了,现在有了空儿,把一些事写出来。不是为了什么,也没有什么目的
,就当是个树洞吧。因为写的事情多多少少和化学有些关系,就发在这里了。
========================================================================
听说,人生最悲剧的就是放弃了不该放弃的,坚持了不该坚持的。
博士毕业了,我也离开了化学这一行。我觉得有些事,不是我们这一行的人很难理解,
所以把一些多余的话写出来,纪念一下似水流年。回过头来我觉得我们这些人都可以说
,我这一生最好的几年都是在hood里度过的,所以似乎也应该写下来。
我对化学,似乎有一些家庭渊源。我的父亲是做化工的,母亲也曾在化学实验室里工作
。小的时候就经常到我母亲工作的地方去,看到玻璃的瓶瓶罐罐,还是颇有神秘感的。
作为小朋友,现在想,我对科学的热情还是很高的,小学生的时候就在家里电解盐水(
可不是PS上的胡扯)。本科的时候也不知道怎么弄的,最后学了化学。应该说我对
quantitative的东西应该更擅长一些,本科时,物化的成绩一直比有机要好,但是因为
有一位非常inspi... 阅读全帖
s******9
发帖数: 283
39
NCBI protein database一般都有标注吧。
FEATURES Location/Qualifiers
source 1..503
/organism="Homo sapiens"
/db_xref="taxon:9606"
gene 1..503
/gene="TGFBR1"
/gene_synonym="ALK5"
/gene_synonym="SKR4"
Protein 1..503
/gene="TGFBR1"
/gene_synonym="ALK5"
/gene_synonym="SKR4"
... 阅读全帖

发帖数: 1
40
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
j******7
发帖数: 137
41
https://erecruit.pnl.gov/psp/hrext/EMPLOYEE/HRMS/c/HRS_HRAM.HRS_CE.GBL

Position 1
Job Title:

Post Doctorate RA - Chemical Physics

Job ID:

300312

Location:

PNNL - Richland, WA





Return to Previous Page






Organization and Job ID

Job ID: 300312
Directorate: Fundamental & Computational Sciences
Group: Chemical Physics & Analysis
.

Job Description

This position is in the area of dynamics and kinetics of th... 阅读全帖
q***l
发帖数: 177
42
National Academy of Engineering Elects 66 Members and 10 Foreign Associates
WASHINGTON — The National Academy of Engineering (NAE) has elected 66 new
members and 10 foreign associates, announced NAE President Charles M. Vest
today. This brings the total U.S. membership to 2,254 and the number of
foreign associates to 206.
Election to the National Academy of Engineering is among the highest
professional distinctions accorded to an engineer. Academy membership
honors those who have made outstand... 阅读全帖
y***e
发帖数: 6082
43
George M. Church, director, Center for Computational Genetics, and professor
of genetics, Harvard Medical School, Boston. For contributions to human
genome sequencing technologies and DNA synthesis and assembly.
此人超级大牛啊,genome sequencing让人叹为观止
Dennis E. Discher, Robert D. Bent Professor of Chemical and Biomolecular
Engineering, University of Pennsylvania, Philadelphia. For elucidation of
the effects of mechanical forces on cell physiology and stem cell
development.
高分子的吧,当年作copolymer self-asse... 阅读全帖
c********c
发帖数: 80
44
来自主题: Chemistry版 - 我这五年的事
当时组里唯一一个亚洲人就是一个四年级的日本师兄,很典型的那种让你记不住的日文
音传写(不知道他的汉字名字)。我们接触的次数实在有限,我现在对他的印象就是长
头发,戴眼镜,然后就是他的抑郁与忧愁。我最后一次见到他,是在一天晚上,他在吃
饼干,心不在焉地翻着那本strategic application of named reactions的书。他和我
说,他已经决定quit phd回日本了。也许是见我当时面有惊恐之色,他接着说,Steve
还是一个不错的老板,我决定quit了,他也很尊重我的决定,还给我写了推荐信。。。
于是很快,他就消失了,我便继承了这个师兄的hood,bench,和desk。我曾经试图了
解到底发生了什么,结果发现,他在人们的记忆中消失的很快,正如他的名字在网页上
消失一样。我听说的是,他因为全组从B大学搬到了A大学,到了一个新地方不适应,所
以抑郁了。一个外国人,不远万里来到美国,因为在相距几个小时的两个美国城市间搬
了家,就抑郁了。。。
老板说,既然你对合成感兴趣,就接手这个project吧。这是一个挺小,挺简单的
macrocycle,做它其实是为了验证方法。老... 阅读全帖
x****h
发帖数: 300
45
来自主题: Chemistry版 - Paper Help
1.
Title: Supported La2O3 and MgO Nanoparticles as Solid Base Catalysts for
Aldol Reactions While Suppressing Dehydration at Room Temperature
ChemCatChem, Volume 5, Issue 2, pages 594–600, February 2013
2.
Characterization, synthesis and catalysis of hydrotalcite-related materials
for highly efficient materials transformations
Shun Nishimura, Atsushi Takagaki and Kohki Ebitani
Green Chem., 2013,15, 2026-2042
3.
Elucidating the Crystal Face- and Hydration-Dependent Catalytic Activity of
Hydro... 阅读全帖
A********e
发帖数: 354
46
BSF让老包自己开价,转让技术。http://www.sciencemag.org/content/344/6184/616.full
The efficient use of natural gas will require catalysts that can activate
the first C–H bond of methane while suppressing complete dehydrogenation
and avoiding overoxidation. We report that single iron sites embedded in a
silica matrix enable direct, nonoxidative conversion of methane, exclusively
to ethylene and aromatics. The reaction is initiated by catalytic
generation of methyl radicals, followed by a series of gas-phase re... 阅读全帖
g******6
发帖数: 782
47
http://www.nae.edu/56154.aspx
National Academy of Engineering Elects 66 Members and 10 Foreign Associates
WASHINGTON — The National Academy of Engineering (NAE) has elected 66 new
members and 10 foreign associates, announced NAE President Charles M. Vest
today. This brings the total U.S. membership to 2,254 and the number of
foreign associates to 206.
Election to the National Academy of Engineering is among the highest
professional distinctions accorded to an engineer. Academy membership
honor... 阅读全帖
y*****l
发帖数: 5997
48
来自主题: _pennystock版 - CDTI
Clean Diesel Technologies, Inc. to Announce Fourth Quarter and Fiscal Year
2010 Financial Results; Conference Call on March 31, 2011
Now - PMZ via Comtex
GlobeNewswireClean Diesel Technologies, Inc. (Nasdaq:CDTI), ("Clean Diesel")
a cleantech emissions reduction company, announced today that it will
report fourth quarter and fiscal year 2010 financial results on Thursday,
March 31, 2011 after the close of the market. Clean Diesel will then hold a
conference call to discuss the results with the i... 阅读全帖
t**t
发帖数: 27760
49
The most common use of platinum is as a catalyst in chemical reactions. It h
as been employed in this application since the early 1800s, when platinum po
wder was used to catalyze the ignition of hydrogen. The most important appli
cation of platinum is in automobiles as a catalytic converter, which allows
the complete combustion of low concentrations of unburned hydrocarbon from t
he exhaust into carbon dioxide and water vapor.
w****y
发帖数: 2952
50
尼玛看不懂英语啊?
Digital Object Identifier (DOI)
10.1002/ejic.200701198 About DOI
Erratum
Le-Yue Li, Quan Yuan, Lei Liao, Chun-Hua Yan, Jun Chen
Removal of Article from Wiley InterScience: The article Ultra-Simple
Synthesis of Ordered Mesoporous -Alumina: High Thermal Stability and
Catalytic Activity, published online on September 4, 2007 in Wiley
InterScience ( www.interscience.wiley.com) (DOI:
10.1002/ejic.200700645), has been removed.
The article was fraudulently submitted to the European Journal ... 阅读全帖
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