q****3
发帖数: 950 | 1 nanotechnology
Catalyzed Oxidation for Nanowire Growth
mater lett
Photovoltaic properties of TiO2-ZrO2 fiber composite electrodes for dye-
sensitized solar cells
相关专业欢迎投寄相关信息（工作单位，联系方式，research interesting，present
position （PhD，postdoc, scientist,...)站内短信即可。。。
I485 rd 9.3， FP 9.26还没有消息。
前后20个号已经绿了1/3了，求祝福，求早绿。
绿吧，把我们全家都带上吧。。。 |
|
ik
发帖数: 167 | 2 This is the abstract:
The authors describe a highly sensitive colorimetric method for the
determination of ascorbic acid. It is based on the finding that nanosheets
of reduced graphene oxide that were functionalized with poly(sodium styrene
sulfonate) (PSS-rGO) possess peroxidase-like activity that catalyzes the
oxidization of the substrate 3,3',5,5'-tetramethylbenzidine (TMB) by H2O2 to
form a blue product that can be quantified by photometry or visually. If
ascorbic acid is present, a fraction... 阅读全帖 |
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s*********5
发帖数: 5637 | 3 讲到亚裔美国史（Asian Study),一个不能不提的名字就是Vincent Chin。其实前几天
就是他被种族仇恨者用棒球棍活活打死30年的祭日。
当时美国经济危机，日本却很强大。但是底特律的汽车工人以为Vincent Chin是日本人
就因为仇恨把他打死。凶手却一天牢也没有坐。
最近Pew Research的文章把亚裔又鼓吹成美国的“model minority”，其实大家真的应
该居安思危。毕竟还是很多美国人还是对亚裔有些种族歧视的。下面这篇加大校长
Frank Wu的文章真的值得大家好好看看。
---------------------------------
这是维基对他的简单介绍：
http://zh.wikipedia.org/wiki/%E9%99%B3%E6%9E%9C%E4%BB%81
陳果仁（1955年－1982年6月23日），美籍華人。1982年6月23日，在美國密歇根州底特
律的飛地高地公園郡（Highland Park）被克萊斯勒公司一名車間主管羅納德·艾班斯
（Ronald Ebens）及其繼子邁克爾·尼茲（Michael Nitz）利用棒球棍毆打致死。... 阅读全帖 |
|
s*********5
发帖数: 5637 | 4 讲到亚裔美国史（Asian Study),一个不能不提的名字就是Vincent Chin。其实前几天
就是他被种族仇恨者用棒球棍活活打死30年的祭日。
当时美国经济危机，日本却很强大。但是底特律的汽车工人以为Vincent Chin是日本人
就因为仇恨把他打死。凶手却一天牢也没有坐。
最近Pew Research的文章把亚裔又鼓吹成美国的“model minority”，其实大家真的应
该居安思危。毕竟还是很多美国人还是对亚裔有些种族歧视的。下面这篇加大校长
Frank Wu的文章真的值得大家好好看看。
---------------------------------
这是维基对他的简单介绍：
http://zh.wikipedia.org/wiki/%E9%99%B3%E6%9E%9C%E4%BB%81
陳果仁（1955年－1982年6月23日），美籍華人。1982年6月23日，在美國密歇根州底特
律的飛地高地公園郡（Highland Park）被克萊斯勒公司一名車間主管羅納德·艾班斯
（Ronald Ebens）及其繼子邁克爾·尼茲（Michael Nitz）利用棒球棍毆打致死。... 阅读全帖 |
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m*******n
发帖数: 5103 | 5 此法案又称 GMO Labeling，于去年提出，在搜集足够签名后由州务卿咨请州议会表决
，但州议会并未进行讨论与表决。根据法律规定，未讨论的法案在第二年的普选时交由
选民公投，也就是今年的 11/5。如果通过，将在 7/1/2015 实施。
法案要求所有经过基因改造的食品，或者含有基因改造成分的食品，都必须明确标示。
正方认为这是民众知的权利，反方认为这会提高食品价格，尤其对本州的中小企业不利。
敬请有投票权的同学们关注此案，正反双方的意见请自行参考以下网站：
正方（主张必须标识）网站 http://yeson522.com/
反方（反对标识）网站 http://factsabout522.com/
阴谋论者可能会觉得反方一定是邪恶势力，但反方除了大公司以外，也包括本地
的中小企业。反对的原因除了提高成本，伤害本地经济以外，也有人说此法案本身不够
健全，如果实施，反而抓小放大，误导消费者。
重点是：天下事情没那么简单 --- 邪恶势力 vs. 屁民，正反双方的意见都有他们的道
理。建议同学们学习学习再决定。
此法案只是说基因改造的食品必须标识。至于基因改造的食品对人究竟有害无害，不是... 阅读全帖 |
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M*V
发帖数: 3205 | 6 In times of universal deceit, telling the truth becomes a revolutionary act
- George Orwell
http://www.huffingtonpost.com/julian-assange/wikileaks-bradley-
Two Years of Cablegate as Bradley Manning Testifies for the First Time
Julian Assange.
Editor-in-Chief and Founder, WikiLeaks
Thursday, November 29th, Bradley Manning testified for the first time since
his arrest two and a half years ago in Baghdad. Today also marks the two-
year anniversary of the first front pages around the world from Cabl... 阅读全帖 |
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d****c
发帖数: 211 | 7 新年好！
突然很感动，
贴的照片很catalyzing。 |
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d****u
发帖数: 2589 | 8 IN USA and many other nations' STANDARD, HE is a CHINESE citizens.
Ei'ichi Negishi (根岸 英一, Negishi Eiichi?, born July 14, 1935[1]) is a
Japanese chemist who spent most of his career at Purdue University, United
States. He is best known for his discovery of the Negishi coupling.[2] He
was awarded the 2010 Nobel Prize in Chemistry "for palladium-catalyzed cross
couplings in organic synthesis" jointly with Richard F. Heck and Akira
Suzuki.[3]
Negishi was born in Changchun, at that time the capital ... 阅读全帖 |
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c**********a
发帖数: 6 | 9 Magnetic nano catalyst modified by dendrimer has excellent performance.
Magnetic nano catalyst modified by dendrimer has excellent performance: 1.
better stability 2. better solubility, can be dissolved in many organic
solvents 3. higher catalytic activity 4. higher catalytic selectivity. In a
variety of organic solvents, it can catalyze a variety of substance in the
hydroformylation reaction, such as catalytic styrene, 4 - fluoro-styrene,
bromostyrene, etc., in appropriate conditions, conversio... 阅读全帖 |
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K********A
发帖数: 917 | 10 U can't catalyze biochemistry reactions in D2O |
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x*****c
发帖数: 1005 | 11 一共四篇文章，确实只有一篇在acs子刊上，不过其他地方的还有好几篇。
虽然目前只有一篇第一作者，但我觉得应该也还有有接收函，还没有出来的。
偶觉得美国很多名校，博士一篇文章没有也照样毕业啊，有的有文章，也还是得等毕业
后才陆续出来的，特别是美国的博士还是5年才毕业的，这个巴基斯坦dd是三年半毕业。
我觉得海狮dd还是别太着急了，拭目以待吧。
1。Liu Z, Liu L, Shafiq Z, et al.
InCl3-catalyzed propargylation of indoles and phenols with propargylic
acetates: Application to the syntheses of benzofurans and naphthofurans
SYNTHESIS-STUTTGART (13): 1961-1969 JUL 3 2007
Times Cited: 1
2. Liu Z, Liu L, Shafiq Z, et al.
A mild and efficient C-3 allylic alkylation of indo |
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o*******a
发帖数: 196 | 12 【 以下文字转载自 WaterWorld 讨论区 】
发信人: darttu (Too easy to make $$$$), 信区: WaterWorld
标 题: CHINESE 拿炸药奖 le --born in Changchun
发信站: BBS 未名空间站 (Wed Oct 6 10:38:42 2010, 美东)
IN USA and many other nations' STANDARD, HE is a CHINESE citizens.
Ei'ichi Negishi (根岸 英一, Negishi Eiichi?, born July 14, 1935[1]) is a
Japanese chemist who spent most of his career at Purdue University, United
States. He is best known for his discovery of the Negishi coupling.[2] He
was awarded the 2010 Nobel Prize in Chemistry "f... 阅读全帖 |
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s**s
发帖数: 96 | 13 Aldol reaction of enol esters catalyzed by cationic species paired with
tetrakis(pentafluorophenyl)borate
Yanagisawa M, Shimamura T, Iida D, Matsuo J, Mukaiyama T
CHEMICAL & PHARMACEUTICAL BULLETIN
48 (11): 1838-1840 NOV 2000
Thanks in advance. |
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P****4
发帖数: 831 | 14 应版主意愿，发一下今年的化学炸药奖:
The Nobel Prize in Chemistry 2010 was awarded jointly to Richard F. Heck,
Ei-ichi Negishi and Akira Suzuki "for palladium-catalyzed cross couplings
in organic synthesis".
钯催化偶联反应，好像以前学有机化学的时候有讲过，很成熟的东西了,跟物理奖颁发
给新兴领域形成对比哈。这年头化学奖不是搞生物的，就是做催化的，学科不均衡哈。
获奖者都是30后的老头了，值得八卦的是Negishi于1935年出生于中国长春，当年日本侵略军统治东
北的时代呀。 |
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l****z
发帖数: 29846 | 15 Dylan McGrath
10/1/2012 1:11 PM EDT
IHS iSuppli slashes sales forecast amid high prices, lack of effective
market SAN FRANCISCO—Ultrabook sales are falling short of expectations amid
high pricing and lack of effective marketing, according to market research
firm IHS iSuppli, which cut its forecast for 2012 sales of the ultra-thin,
low-power notebook PCs.
IHS (El Segundo, Calif.) estimates that 10.3 million Ultrabooks will ship
this year, down from a previous forecast of 22 million. More than hal... 阅读全帖 |
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s***e
发帖数: 911 | 16 DNA topoisomerases are enzymes that catalyze the passage of individual DNA
strands or double helices through one another. These reactions are often
manifested in interconversions between topological isomers of DNA rings;
hence the name of the enzymes...
There are three enzymes in this group: E.coli DNA topoisomerase I,
mouse DNA topoisomerase I, and E.coli topoisomerase II, respectively,
representing 3 distinct subfamilies of topoisomerases.
Both E.coli DNA topoisomerase I and mouse DNA topoisom |
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a***e
发帖数: 1010 | 17 you need a bridge DNA.
check NEB
Taq DNA Ligase catalyzes the formation of a phosphodiester bond between
juxtaposed 5′ phosphate and 3′ hydroxyl termini of two adjacent
oligonucleotides which are hybridized to a complementary target DNA. The
ligation will occur only if the oligonucleotides are perfectly paired to the
complementary target DNA and have no gaps between them; therefore, a single
-base substitution can be detected. Taq DNA Ligase is active at elevated
temperatures (45°C-65°C) (1,2). |
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s******y
发帖数: 28562 | 20 Nice :)
They finally made the missing link |
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n******7
发帖数: 12463 | 21 cool!
不知道现在还没有可能在某个角落找到纯rna生命形式 |
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h**********r
发帖数: 671 | 22 Title:
Reconstitution of the Isobutene-Forming Reaction Catalyzed by Cytochrome
P450 and P450 Reductase from Rhodotorula minuta: Decarboxylation with the
Formation of Isobutene
Biochemical and Biophysical Research Communications
Volume 201, Issue 2, 15 June 1994, Pages 516-522
doi:10.1006/bbrc.1994.1732
Thank you so much!
my email: m******[email protected] |
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s****t
发帖数: 461 | 24 30 years ago, some famous scientists faced the similar problem to yours.
Later, they solved the problem and their work got them Nobel price. Yes, I
am talking about RNA self splicing.
Unfortunately, you probably can't chemically synthesize your protein in full
-length. So it's almost impossible to get a truly clean system to demonstate
it.
Here are some suggestions:
1. Try in-vitro translation system to see if it's still the case.
2. If you can map the cleavage site, you can synthesize some pept... 阅读全帖 |
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s**u
发帖数: 9035 | 25 Postdoctoral Fellowships in Tobacco Control Research
The purpose of the fellowship is to attract diverse individuals from a
wide variety of backgrounds in medical, biological, social,
behavioral, and policy sciences to develop a new generation of
academic leaders in tobacco control. Upon completion of training,
fellows will be well positioned to be active participants in crucial
policy debates about the future development and implementation of
tobacco control interventions. The need for tobacco... 阅读全帖 |
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z*h
发帖数: 773 | 26 In industrial biotechnology, China lags far behind USA and Europe. China may
lead some niches because other countries do not care, for example lipase-
catalyzed biodiesel. What is worse, lipase is produced by Novozymes. |
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z*h
发帖数: 773 | 27 In industrial biotechnology, China lags far behind USA and Europe. China may
lead some niches because other countries do not care, for example lipase-
catalyzed biodiesel. What is worse, lipase is produced by Novozymes. |
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z*t
发帖数: 863 | 28 Non-CG methylation happens a lot in plant. But lots of data now shows non-CG
methylation in mammalian cells.
Jaenisch once showed non-CG methylation is decrease in Dnmt3a KO ES cells.
Yang Shi is also trying to find enzymes catalyze the non-CG methylation. |
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t*********o
发帖数: 78 | 29 Postdoctoral Position in Single Molecule Enzymology : Columbus, OH, United
States
One postdoctoral position is available immediately in an enzymology
laboratory to elucidate the kinetics and dynamics of polymerization
catalyzed by human and viral DNA/RNA polymerases using single molecule Prism
-based or Objective-based Total Internal Reflection Fluorescence (TIRF)
apparatus. Background in single molecule technologies, computer programming,
enzyme kinetics, biophysics, and protein purification is... 阅读全帖 |
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s******9
发帖数: 283 | 30 http://www.sciencemag.org/content/early/2013/03/06/science.1236
The Brain Activity Map
A. Paul Alivisatos1,*,
Miyoung Chun2,
George M. Church3,
Karl Deisseroth4,
John P. Donoghue5,
Ralph J. Greenspan6,
Paul L. McEuen7,
Michael L. Roukes8,
Terrence J. Sejnowski9,*,
Paul S. Weiss10,
Rafael Yuste11,*
Abstract
Researchers propose building technologies to enable comprehensive mapping
and control of neural circuit activity.
Neuroscientists have made impressive advances in understanding the
microscale ... 阅读全帖 |
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m******g
发帖数: 467 | 31 开学了，突然变得很有效率，脱离了颓废的圣诞假期感觉真好！
发布顺序有点乱，不过大概还是按照时间顺序的。
Science 13.12.06
推荐：
1. Genetic determinants and cellular constraints in noisy gene expression
Evidences for gene-specific v.s. genome-wide regulation
Mainly focused on yeast and E. coli
2. Functional Roles of Pulsing in Genetic Circuits
两篇都是Review, 不是我最喜欢的那类Review, 有点罗列的感觉
稍微了解一下：
1. Single-Cell Metabolomics: Analytical and Biological Perspectives
也是review，主要讲方法
小知识：
1. Playing Kissy with the Relatives
Who to select for cooperate
Surface rece... 阅读全帖 |
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m******g
发帖数: 467 | 32 开学了，突然变得很有效率，脱离了颓废的圣诞假期感觉真好！
发布顺序有点乱，不过大概还是按照时间顺序的。
Science 13.12.06
推荐：
1. Genetic determinants and cellular constraints in noisy gene expression
Evidences for gene-specific v.s. genome-wide regulation
Mainly focused on yeast and E. coli
2. Functional Roles of Pulsing in Genetic Circuits
两篇都是Review, 不是我最喜欢的那类Review, 有点罗列的感觉
稍微了解一下：
1. Single-Cell Metabolomics: Analytical and Biological Perspectives
也是review，主要讲方法
小知识：
1. Playing Kissy with the Relatives
Who to select for cooperate
Surface rece... 阅读全帖 |
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K**4
发帖数: 1015 | 33 I didnt read the paper but from what you have said, it is impossible that
small molecule kinase can catalyze proteins.If it is indeed a small molecule
kinase, and his paper showed it is protein kinase, I think he definitely
manipulated the data.
Sorry I dont have Chinese input right now.
kinase |
|
发帖数: 1 | 34 I was a nucleic acid research scientist, but not working on gene editing any
more
. The reason I am involved is to present some basic knowledge on nucleic
acid
research.
{1) I have no comments, but Dr. Chou has mentioned he was able to reproduce
it.
The biggest concern is not addressed by your answer. }
Band shift sometimes can be seen due to sample ionic strength and buffer.
{ 2) DNA band and migration are easily alternated by sample ionic strength
and
buffer.
No, I did not talk about band dist... 阅读全帖 |
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发帖数: 1 | 35 Dr. Chou is not a green hand. He is doing quite well right now and becoming
a rising star professor in SIBS.
I personally think Dr. Han's enzyme has relatively low activity of
catalyzing DNA compared to the CRISPR enzyme, which cause quite low success
rate of this experiment.
There is an improvement of timing and efficiency of ssDNA transfection after
plasmid DNA produces the enzyme in living cells.
I can feel the anxiety of some scientists questioning Dr. Han's work,
however the way they are qu... 阅读全帖 |
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发帖数: 1 | 36 You leave me no choice but . I can not stand someone without any chemistry
sense when he/she is a biologist.
Chemical reaction is a on/off equilibrium. Some enzymes pick up the first
substance first and then the second one if the space arrangement is allowed
in the active site; some enzymes bind to a coordinated substance complex if
the reaction needs both substances available at the same time to fit into
the active site. It depends on the nature of individual enzymes. Since ssDNA
can not bind t... 阅读全帖 |
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z*h
发帖数: 773 | 37 Based on catalysts.
When substrates have so many OH group or O, they can be catalyzed well by
enzymes. When substrate have dominant CH and C, traditional catalysts are
better.
based on efficiency.
Biocatalysts are far better.
Based on rates.
Catalysis are better.
So we need evaluate which we need most. and decide how to go. |
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z*h
发帖数: 773 | 38 Based on catalysts.
When substrates have so many OH group or O, they can be catalyzed well by
enzymes. When substrate have dominant CH and C, traditional catalysts are
better.
based on efficiency.
Biocatalysts are far better.
Based on rates.
Catalysis are better.
So we need evaluate which we need most. and decide how to go. |
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a********t
发帖数: 24 | 39 Ru 催化剂 可以secondary alcohol to ketones,副产物是H2，不需要oxidants.
排除过渡金属杂质的因素，我比较倾向你说的第一种情况：(L)NaOR1R2 === > (L)NaH
+ ketones.
"Of course, the third one is the presence of a trace
amount of heavy metal impurity that actually catalyzes the reaction.
This option appears less likely to me because normally a reaction
like that needs to consume a stoichiometric amount of dioxygen
or other oxidants, which appears not available in Wang's reactions . " |
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j***j
发帖数: 560 | 41 Synlett, (8), 971-973; 1997
A new and selective metal-catalyzed Baeyer-Villiger oxidation procedure.
Gottlich, Richard; Yamakoshi, Koichi; Sasai, Hiroaki; Shibasaki, Masakatsu.
Graduate School Pharmaceutical Sciences, University Tokyo, Tokyo,
Japan. Synlett (1997), (8), 971-973.
l***[email protected]
Thanks in advance. |
|
t******e
发帖数: 196 | 42 Contribution to the mechanism of the acid-catalyzed hydrolysis of purine
nucleosides
First PageHi-Res PDF[624 KB]L. Hevesi, E. Wolfson-Davidson, J. B. Nagy, O. B
. Nagy, A. Bruylants
J. Am. Chem. Soc., 1972, 94 (13), pp 4715–4720
DOI: 10.1021/ja00768a046 |
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B****i
发帖数: 107 | 43 Fullerenes can catalyze hydrogenation of organic compounds as effectively as
metals can, according to a study by researchers in China (J. Am. Chem. Soc.
, DOI: 10.1021/ja9061097). The discovery may lead to replacing precious-
metal catalysts with carbon-based substitutes, which could reduce costs and
the environmental effects of heavy-metal pollutants.
Transition-metal catalysts lie at the heart of global-scale hydrogenation
processes, such as the ones used to refine crude oil and to synthesize |
|
p****6
发帖数: 61 | 44 Heterocycles, 2000, 53, 1691.
"Synthesis of Oxepanes via Indium Chloride Mediated and Tin Chloride
Catalyzed Prins-Type Cyclization"
Heterocycles,2002, 58, 659."Multicomponent Reactions: Synthesis of
Spirocyclic Tetrahydropyran Derivatives by Prins Cyclization"
Email: l***********[email protected]
thanks! |
|
|
d*******7
发帖数: 188 | 46 学校的数据库上没找到，网上的都是要钱的，找好心人帮助，谢谢 rudongjs@gmail.
com
Title: Kinetics of Platinum-Catalyzed Decomposition of Hydrogen Peroxide
Author: Tiffany A. Vetter and D. Philip Colombo Jr.
Journal: J. Chem. Educ., 2003, 80 (7), p 788
Abstract link: http://pubs.acs.org/doi/abs/10.1021/ed080p788
想用模板发来着， 然后说验证码过期，让回去刷新，回去后没有找到所谓的验证码，
然后发现自己填的
模板内容也没了...... |
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s***r
发帖数: 67 | 47 Pls send to
p**********[email protected]
Title: Enantioselective Direct Amination of alpha-Cyanoketones Catalyzed by
Bifunctional Organocatalysts
Author(s): Kim, SM; Lee, JH; Kim, DY
Source: SYNLETT Issue: 17 Pages: 2659-2662 Published: 2008
Title: Cinchona derivatives as bifunctional organocatalysts for the direct
asymmetric nitroaldol (Henry) reaction
Author(s): Marcelli, T; van der Haas, RNS; van Maarseveen, JH, et al.
Source: SYNLETT Issue: 18 Pages: 2817-2819 Published: NOV 3 2005 |
|
a*****o
发帖数: 157 | 48 Journal: Angew. Che. Int. Ed. Engl
Volume: 34
Issues: 23-24
Page: 2691-2694
Title: A Study on Rhodium - Vinylallene Complexes Leading to a New Reaction,
Rhodium-Catalyzed Carbonylative [4 + 1]Cycloaddition
Author: Masahiro Murakami *, Kenichiro Itami, Prof. Yoshihiko Ito
http://www3.interscience.wiley.com/journal/106590232/abstract
Thank you very much!!!!!!!!!
attached to your reply or send to: s******[email protected]
|
|
a*****o
发帖数: 157 | 49 Title : Rhodium-Catalyzed Intramolecular Pauson-Khand Reaction
Authors: Yuji Koga, Toshitake Kobayashi and Koichi Narasaka
Journal: Chemistry Letters
Volume: 27, Number: 3, Year 1998, Page: 249.
Thank you very much.
Please reply to s******[email protected] |
|
