w*c
发帖数: 875 | 1 不是e.coli表达的，是从我们做的菌种里面直接提纯的。
e.coli倒是也能表达，但是iron sulfur cluster incorporation就是个问题，需要rec
onstitution。
我生平最恨的两件事情：
DTNB assay和protein reconsitution（我的另外一个蛋白里面有四个4Fe-4S和一个2Fe
-2S） |
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T**********t
发帖数: 1604 | 2 http://www.huffingtonpost.com/2010/12/02/nasa-could-announce-arsenic-eating-bacteria_n_790954.html
WASHINGTON — The discovery of a strange bacteria that can use arsenic as
one of its nutrients widens the scope for finding new forms of life on Earth
and possibly beyond.
While researchers discovered the unusual bacteria here on Earth, they say it
shows that life has possibilities beyond the major elements that have been
considered essential.
"This organism has dual capability. It can grow with eit... 阅读全帖 |
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m******5
发帖数: 1383 | 3 A Bacterium That Can Grow by Using Arsenic Instead of Phosphorus
1. Felisa Wolfe-Simon1,2,*,
2. Jodi Switzer Blum2,
3. Thomas R. Kulp2,
4. Gwyneth W. Gordon3,
5. Shelley E. Hoeft2,
6. Jennifer Pett-Ridge4,
7. John F. Stolz5,
8. Samuel M. Webb6,
9. Peter K. Weber4,
10. Paul C. W. Davies1,7,
11. Ariel D. Anbar1,3,8 and
12. Ronald S. Oremland2
+ Author Affiliations
1.
1NASA Astrobiology Institute, USA.
2.
2U.S. Geological Survey, Menlo Park, CA, US... 阅读全帖 |
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d********r
发帖数: 3279 | 4 Arsenic-associated bacteria (NASA's claims)
ResearchBlogging.org
Wolfe-Simon F, Blum JS, Kulp TR, Gordon GW, Hoeft SE, Pett-Ridge J, Stolz JF
, Webb SM, Weber PK, Davies PC, Anbar AD, & Oremland RS (2010). A Bacterium
That Can Grow by Using Arsenic Instead of Phosphorus. Science (New York, N.Y
.) PMID: 21127214
Note to new readers: I wrote this post on Saturday Dec. 4, mainly to
clarify my own thinking. I didn't expect anyone other than a few
researchers to ever read it. Since then I've made ... 阅读全帖 |
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g*********5
发帖数: 2533 | 5 i.e, some substitute of 35S-Met AND 35Cys? |
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l**********1
发帖数: 5204 | 6 //products.invitrogen.com/ivgn/product/G2879
is half price of GE Life Glutathione Sepharose™ High Performance
Description
Glutathione agarose prepared by linking the sulfur atom of glutathione to crosslinked beaded agarose can
be used for purification of GST fusion proteins. Each milliliter of gel can bind approximately 5-6 mg of
boivine-liver GST.
-------
GE Life Glutathione Sepharose™ High Performance
Binding capacity* » 10 mg recombinant GST/ml medium
* Binding capacity wil... 阅读全帖 |
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s**********t
发帖数: 680 | 7 J Drugs Dermatol. 2012 Mar;11(3):357-64.
Treatment of scabies using 8% and 10% topical sulfur ointment in different
regimens of application.
Pediatric Clinics of North America
Volume 56, Issue 6, December 2009, Pages 1421–1440
Skin Disorders, Including Pyoderma, Scabies, and Tinea Infections
My email is b************[email protected]
Thanks! |
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k*****n
发帖数: 417 | 8 The report is preliminary, but shows the potential of using the protein and
magnetic fields to stimulate neurons, says Mu-ming Poo, director of the
Institute of Neuroscience at the Chinese Academy of Sciences in Shanghai.
But he and other researchers are critical that the paper does not discuss
how the protein can sense magnetic fields. James Chou, a biological chemist
at Harvard Medical School in Boston, Massachusetts, says that the work
offers no reasonable explanation — or even speculation.
“... 阅读全帖 |
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v********e
发帖数: 1597 | 9 http://www.nature.com/news/long-sought-biological-compass-disco
In the cells of fruit flies, Chinese scientists say that they have found a
biological compass needle: a rod-shaped complex of proteins that can align
with Earth’s weak magnetic field.
The biocompass — whose constituent proteins exist in related forms in other
species, including humans — could explain a long-standing puzzle: how
animals such as birds and insects sense magnetism. It might also become an
invaluable tool for using m... 阅读全帖 |
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v********e
发帖数: 1597 | 10 http://www.nature.com/news/long-sought-biological-compass-discovered-1.18803
In the cells of fruit flies, Chinese scientists say that they have found a
biological compass needle: a rod-shaped complex of proteins that can align
with Earth’s weak magnetic field.
The biocompass — whose constituent proteins exist in related forms in other
species, including humans — could explain a long-standing puzzle: how
animals such as birds and insects sense magnetism. It might also become an
invaluable too... 阅读全帖 |
|
发帖数: 1 | 11 读了一下这篇文章，不喜欢这种研究思路，不能够称之为科学。
该实验室主页上面所挂出来的以下一些文章中，有很多引用率非常的低。
ROCKII inhibition promotes the maturation of human pancreatic beta-like
cells. Nature Communications. 2017 Academic Article GET IT
High-Content Screening in hPSC-Neural Progenitors Identifies Drug Candidates
that Inhibit Zika Virus Infection in Fetal-like Organoids and Adult Brain.
Cell Stem Cell. 2017 Academic Article GET IT
A Modular Platform for Differentiation of Human PSCs into All Major
Ectodermal Lineages. Cell Stem Cell. ... 阅读全帖 |
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d*****i
发帖数: 77 | 12 【 以下文字转载自 Macromolecules 讨论区 】
发信人: dejinli (waiting for rocket), 信区: Macromolecules
标 题: 请教有关chain transfer
发信站: BBS 未名空间站 (Tue Jul 1 15:12:43 2008)
请问如果用硫醇做chain transfer agent,生成的sulfur radical还能继续引发聚合吗
？什么样的条件下它能继续引发聚合？
多谢了！ |
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c******n
发帖数: 16403 | 13 Phosphorus, Sulfur and Silicon and the Related Elements, 182(7), 1535-1556;
2007
谢谢 |
|
|
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d********O
发帖数: 1196 | 16 Title : Reduction of bromate by biogenic sulfide produced during microbial
sulfur disproportionation
Journal : Biodegradation
DOI :10.1007/s10532-009-9296-5
Thanks again! |
|
j***j
发帖数: 560 | 17 Metlushka, Kirill E.; Alfonsov, Vladimir A.; McKenna, Charles E.; Kashemirov
, Boris A.; Kataeva, Olga N.; Zheltukhin, Viktor F.; Sadkova, Dilyara N.;
Dobrynin, Alexey B.
Phosphonylation of 1,3-diaryl-2,3-dihydro-1H-naphth[1,2-e][1,3]oxazine by
dialkyl and diaryl phosphonates.
Phosphorus, Sulfur and Silicon and the Related Elements (2008), 183(11),
2645-2646.
l***[email protected] or inner website email address. Thanks in advance. |
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a**r
发帖数: 224 | 18 http://www.informaworld.com/smpp/content~db=all~content=a791530787
The Synthesis and Chemistry of Formylphosphonate
Jana Cairns; Colm Dunne; Thaddeus S. Franczyk; Robert Hamilton;
Christopher Hardacre; Michael K. Stern; Alan Treacy; Brian J. Walker
Pages 385 – 388
Phosphorus, Sulfur, and Silicon and the Related Elements, Volume 144 Issue 1
1999
Please email to a*********[email protected]
Thanks a lot! |
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c*********o
发帖数: 1469 | 19 SYNTHESIS AND STRUCTURE OF THE MESOCYCLIC COMPOUNDS, 5-PHENYL-l-THIA-5-
PHOSPHACYCLOOCTANE, CIS- AND TRANS-1,5-DIPHENYL-1,5-DIPHOSPHACYCLOOCTANE AND
THEIR PHOSPHINE OXIDES
Authors: Susan D. Toto a; Brian W. Arbuckle a; Parimal K. Bharadwaj a; Joyce
Takahashi Doi a;W. Kenneth Musker a
Affiliation: a Department of Chemistry, University of California,
Davis, CA
DOI: 10.1080/10426509108038063
Publication Frequency: 12 issues per year
Published in: journal Phosphorus, Sulfur, and Silicon and th |
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y*********n
发帖数: 40 | 20 我只是做过steam reforming, C and sulfur removal等一些简单的与催化有关的研究
（在燃料电池中的应用，没有做过催化评价的实验），请问除了berkeley 的几个催化
大拿之外，mit 和harvard还有什么大牛做相关研究？我指的催化是与石化能源有关的
，类似于Iglesia组里的研究，谢谢，小弟在找postdoc，希望能够得到解答 |
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p****6
发帖数: 61 | 21 journal:
Phosphorus, Sulfur, and Silicon and the Related Elements
Volume 38, Issue 1 & 2 July 1988 , pages 49 - 58
"NEW RADIOHALOGENATED ALKENYL TELLURIUM FATTY ACIDS"
email: l********[email protected]
Thank you very much |
|
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t******t
发帖数: 3045 | 23 how about sulfuric acid? |
|
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e*l
发帖数: 585 | 25 貌似methoxide attacks the sulfur atom in Ts,kick out OPh,then acidic work up
to get PhOH。 |
|
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c*t
发帖数: 238 | 27 "hiosulfonates: synthesis, reactions and practical applications"
Sulfur Reports (1993), 14 223-40.
Please email a copy to r*****[email protected] |
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s*********4
发帖数: 63 | 28 求下面文章，太新了，在我们的library里找不到，特在此请求大家帮忙。 我的邮箱：
c********[email protected]. 先谢谢了
Mizrahi, D.M., M. Goldvaser, and I. Columbus, Long-Term Evaluation
of the Fate of Sulfur Mustard on Dry and Humid Soils, Asphalt, and
Concrete. Environ. Sci. Technol., 2011. 45(8): p. 3466-3472. |
|
q****i
发帖数: 6923 | 29 62991-888 - VWR TUBING RD5/16X1/16INPK50FT
Supplier: VWR International
VWR* Red Rubber Tubing^ High-quality, durable, natural rubber tubing for
general laboratory use. Seamless, with uniform medium wall and low sulfur
content. Durometer hardness: Shore A, 50. Tensile strength: 2500-3500psi.
Coil length: 15.2m. 7.9IDx11ODmm. Wall thickness: 1.6mm
Cole-Parmer
Black Rubber Tubing
EW-96142-07
Black Rubber Tubing, 5/16" ID x 7/16" OD, 25 ft, wall thickness 1/16"
(package)
chlorinated.
查到２个vendor一... 阅读全帖 |
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L**u
发帖数: 933 | 30 国内朋友让帮忙。可惜我们学校没有这个。
Abdelhamid, Abdou O.; Afifi, Mamdouh A. M.; Phosphorus and Sulfur and the
Related Elements; vol. 36; (1988);p. 129 - 134
Abdelhamid, Abdou O.; Journal of Chemical Research, Miniprint; nb. 6; (1993)
; p. 1239 - 1262
many thanks |
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x**********1
发帖数: 447 | 31 请教一下， 制备了一个化合物， NMR 很纯， 但是产率太高了， 怀疑里头有sulfur(0
), 但是核磁看不出来， 怎么办， 还有怎么提纯阿， 谢了 |
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h**********r
发帖数: 671 | 32 我想找个快速检测isobutene的方法。最好是颜色反应之类的。这儿有个方法。
The chemical screening method is based on the principle that ethylene
reduces palladium chloride in water containing sulfuric acid5) and
the reduced palladium is detected by colorimetry with molybdenumblue. There
were some cases in which ammoniummolybdate was reduced by an unknownreducing
gas formed by certain organisms. To prevent such an
undesirable phenomenon,the reaction mixture was covered with liquid paraffin
in which ethylene dissolves well. Olefins... 阅读全帖 |
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M**i
发帖数: 331 | 33 "Advance in improvement of cycle life of lithium-sulfur batteries"
Huagong Jinzhan
2011, 30(5), 991-996
many thanks! |
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p******5
发帖数: 21 | 34 杂志：Phosphorus, Sulfur, and Silicon and the Related Elements
题目：On the Acidity and Lithiation-Functionalization of Thiophenes:
Revisited for their Use in the Synthesis of Thiophene-Based Novel π-Systems
DOI: 10.1080/10426509708545568
Masaji Oda, Tetsuy A. Enomoto, Takeshi Kawase & Hiroyuki Kurata
Volume 120, Issue 1, 1997, pages 401-402 |
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x**********1
发帖数: 447 | 35 arylthioether, 就是两边是苯的衍生物， 中间是sulfur, 这种硫醚能不能被photo
chemistry 的条件切断阿？ |
|
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z*h
发帖数: 773 | 37 Can we generate and vote the most important chemical reactions in humankind
and modern society?
The first two are:
(1) photosynthesis: CO2 + H20 + hv --> CH2O (carbohydrate) + O2
(2) respiration: CH2O + O2 --> CO2 + H2O + (ATP)
Burning
(3) Coal Combustion: C + O2 --> CO2
(4) Hydrocarbon combustion: CnHm + O2 --> CO2 + H2O
For chemical industries
C + 2H2O --> CO2 + 2H2 or (using methane)
N2 + 3 H2 --> 2 NH3
Making sulfuric acid
Making Cl2 by electrolysis
Oil cracking and reforming |
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o******e
发帖数: 284 | 38 if>1
1 CHEM REV 40.197
2 NAT MATER 32.841
3 CHEM SOC REV 28.760
4 ACCOUNTS CHEM RES 21.640
5 NAT CHEM 20.524
6 ALDRICHIM ACTA 16.091
7 NANO TODAY 15.355
8 ANNU REV PHYS CHEM 14.130
9 ADV MATER 13.877
10 ANGEW CHEM INT EDIT 13.455
11 NANO LETT 13.198
12 COORDIN CHEM REV 12.110
13 SURF SCI REP 11.696
14 ACS NANO 10.774
15 MED RES REV 10.700
16 J PHOTOCH PHOTOBIO C 10.360
17 ADV FUNCT MATER 10.179
... 阅读全帖 |
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b******8
发帖数: 55 | 39 Phosphorus, Sulfur and Silicon and the Related Elements, 179(2), 277-283;
2004 |
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L****r
发帖数: 333 | 40 嘎tech化学 got Younan Xia, in 2011 he publsihed 11 Angewandte Chemie
International Edition.
(1) Silver nanocrystals with concave surfaces and their optical and surface-
enhanced Raman scattering properties
Xia, X.; Zeng, J.; McDearmon, B.; Zheng, Y.; Li, Q. and Xia, Y. Angewandte
Chemie International Edition 2011, 50, 12542-12546 (VIP article, highlighted
on the inside cover).
(2) Shape-controlled synthesis of copper nanocrystals in an aqueous solution
with glucose as a reducing agent and hexadecyl... 阅读全帖 |
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p*****s
发帖数: 15 | 42 Did you try pickling in a heated solution of sulfuric and nitric acids (70 +
70 g/l) with the addition of 5–6 g/l of fluoride. |
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a*******e
发帖数: 110 | 43 "The Study of Phosphoramidite as O-Phosphitylation Agent and Its Reactivity
"
Phosphorus, Sulfur and Silicon and the Related Elements, 2000 , vol. 164,
p. 277 - 292
Chen, Shui-Bing; Li, Yan-Mei; Luo, Shi-Zhong; Zhao, Gang; Tan, Bo; Zhao, Yu-
Fen
Link: http://www.tandfonline.com/doi/pdf/10.1080/10426500008045253
my email: j******[email protected]
Thank you very much! |
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R******d
发帖数: 5739 | 44 I think the sulfur attacks the alkene on the maleic anhydride by free
radical? is it a linker? |
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x****h
发帖数: 300 | 45 Armitage, J.W.; Cullis, C.F. Studies of the reaction between nitrogen
dioxide
and sulfur dioxide, Combust. Flame 1971, 16, 125-130
Wendt, J.O.L.; Sternling, C.V. Catalysis of SO2 oxidation by nitrogen oxides
,
Combust. Flame 1973, 21, 387-390
x******[email protected]
Thanks a lot |
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R******d
发帖数: 5739 | 46 the sulfuric acid acidifies nitric acid to nitronium ion and water, i guess
the acetic acid pushes the equilibrium to the nitronium side |
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b******8
发帖数: 55 | 47 Phosphorus, Sulfur, and Silicon and the Related Elements, Volume 186, Issue
9, 2011, 1867-1875 |
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b******8
发帖数: 55 | 48 1) Australian Journal of Chemistry, 56(11), 1127-1133, 2003
2) Journal of Sulfur Chemistry, 27(5), 427-432, 2006
3) Canadian Journal of Chemistry, 84(5), 812-818, 2006 |
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b****n
发帖数: 379 | 49 Synthesis of alkyl- and cycloalkylamines by hydroamination
Science of Synthesis (2009), 40a, 241-304. Publisher: (Georg Thieme Verlag）
An efficient method for the synthesis of 2,3-dihydro-1H-isoindoles
Indian Journal of Chemistry, Section B: Organic Chemistry Including
Medicinal Chemistry (2009), 48B, (4), 545-552.
http://onlinelibrary.wiley.com/doi/10.1002/0471264180.or036.03/
DOI: 10.1002/0471264180.or036.03
Málek, J. 2004. Reductions by Metal Alkoxyaluminum Hydrides. Part II.
Carboxylic Acids... 阅读全帖 |
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e******d
发帖数: 310 | 50 【 以下文字转载自 Living 讨论区 】
发信人: easyroad (pine), 信区: Living
标 题: 房子边上的 电厂
发信站: BBS 未名空间站 (Thu Dec 26 20:10:05 2013, 美东)
刚搬进来两个星期， 发现房子的正东面大约2 mile的地方有个 combined-cycle gas
-fired power plant。
现在的问题是这样的房子是 污染会不会比较严重， 不适合有小孩和老人的家庭住了,
更不适合在这样的环境下怀孕了？
在网上查了下这家发电厂的基本情况，功率是800MW。 污染物的排放如下
氧化氮 （NOx）10.6 吨每年
一氧化碳 2.29 吨每年
二氧化硫 0.70 吨每年
VOC 0.87 吨每年
TSP=PM10 0.75 吨每年
Ammonia 293 吨每年
Sulfuric acid 1.621 吨每年
1，3-Butadiene 0.011 吨每年
Acetaldehyde 1.02 吨每年
Acrolein 0.163 吨... 阅读全帖 |
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