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Please use this site to help clarify certain aspects of science. Let's make a difference!
Latest entries:
Use of racial or ethnic classification in medical practice: Are there Genetic Ancestry in Lung-Function Predictions?
published on 2010-07-14 09:37:13 by misconduct
published on 2010-07-14 09:37:13 by misconduct
The work in this weeks New England Journal of Medicine is interesting if you are working on genetic ancestry. It has certainly an explosive effect on race matters. What do you think of relevance of this article on genetic ancestry? Background: ...
Article: Rajesh Kumar, M.D., Max A. Seibold, Ph.D., Melinda C. Aldrich, Ph.D., M.P.H.,
L. Keoki Williams, M.D., M.P.H., Alex P. Reiner, M.D., Laura Colangelo, M.S.,
Joshua Galanter, M.D., Christopher Gignoux, M.S., Donglei Hu, Ph.D.,
Saunak Sen, Ph.D., Shweta Choudhry, Ph.D., Edward L. Peterson, Ph.D.,
Jose Rodriguez-Santana, M.D., William Rodriguez-Cintron, M.D.,
Michael A. Nalls, Ph.D., Tennille S. Leak, Ph.D., Ellen O’Meara, Ph.D.,
Bernd Meibohm, Ph.D., Stephen B. Kritchevsky, Ph.D.,
Rongling Li, M.D., Ph.D., M.P.H., Tamara B. Harris, M.D.,
Deborah A. Nickerson, Ph.D., Myriam Fornage, Ph.D., Paul Enright, M.D.,
Elad Ziv, M.D., Lewis J. Smith, M.D., Kiang Liu, Ph.D.,
and Esteban González Burchard, M.D., M.P.H., Genetic Ancestry in Lung-Function Predictions, New Engl J Med, NEJM, 2010, page 1-10
Use of racial or ethnic classification in medical practice: Are there Genetic Ancestry in Lung-Function Predictions?
published on 2010-07-09 10:44:40 by misconduct
published on 2010-07-09 10:44:40 by misconduct
The work in this weeks New England Journal of Medicine is interesting if you are working on genetic ancestry. It has certainly an explosive effect on race matters. What do you think of relevance of this article on genetic ...
Article: Rajesh Kumar, M.D., Max A. Seibold, Ph.D., Melinda C. Aldrich, Ph.D., M.P.H., L. Keoki Williams, M.D., M.P.H., Alex P. Reiner,, Genetic Ancestry in Lung-Function Predictions, New Engl J Med, NEJM, 2010, page 1-10
Cooperative, Compact Algorithms for Randomized Algorithms by Rohollah Mosallahnezhad (doi:10.1016/j.amc.2007.03.011)
published on 2009-06-22 10:41:34 by FrankMiller
published on 2009-06-22 10:41:34 by FrankMiller
I wish to bring to the attention of readers a similar case that occurred two years ago to a traditional scientific journal of a traditional publisher, but that attracted much less attention than this.
In 2007, Elsevier' journal Applied Mathematics and ...
Article: Rohollah Mosallahnezhad, Cooperative, Compact Algorithms for Randomized Algorithms (doi:10.1016/j.amc.2007.03.011), Appl. Math. Comput., 2007, page 1-8
Deconstructing Access Points by David Phillips and Andrew Kent ISSN: 1874-947X Volume 2, 2009
published on 2009-06-22 10:38:21 by JohnFrusciante
published on 2009-06-22 10:38:21 by JohnFrusciante
This is one example of why the “pay to publish” model has to end. Even top journals like PlOS can justify their fee schedule all they want, but at the end, pay to publish journals simply shift the revenue stream from institutions and readers(libraries ...
Article: David Phillips and Andrew Kent, Deconstructing Access Points by David Phillips and Andrew Kent ISSN: 1874-947X, The Open Information Science Journal, 2009, page 1-5
"Strong Ultra-Broadband Near-Infrared Photoluminescence from Bismuth-Embedded Zeolites and Their Derivatives" AMORPHOUS STUFF
published on 2009-06-22 09:48:30 by FrankMiller
published on 2009-06-22 09:48:30 by FrankMiller
Amorphous Stuff
It is known for many, many years, that heating a zeolite at elevated temperatures (called calcination) leads above a certain temperature to an amorphous or dense crystalline product. Often the dense crystalline material is formed ...
Article: H. Sun, A. Hosokawa, Y. Miwa, F. Shimaoka, M. Fujii, M. Mizuhata, S. Hayashi, S. Deki, "Strong Ultra-Broadband Near-Infrared Photoluminescence from Bismuth-Embedded Zeolites and Their Derivatives", Adv. Mater. Weinheim, 2009, page 1-5
A few remarks and questions concerning the Rietveld Refinements:
-The fits were done in the range of ~8 to 80 degrees, the peak at ~6° 2Theta was simply left out. For what reason?
- The background fitting of the steamed and calcined sample looks ...
Article: J. Nery, Y. Mascarenhas, T. Bonagamba, N. Mello, E. Souzy-Aguiar, Location of cerium and lanthanum cations in CeNaY and LaNaY after calcination, Zeolites, 1997, page 44
Interesting and good article. What I miss is a comparison between prices.
It is pointed out, that the new route using TPA-Br is more cost effective than the use of TPA-OH and Ti-alkoxydes. It is even pointed out in the abstract of the article. So why ...
Article: M. Shibata, Z. Gabelica, Synthesis of MFI titanosilicates from methylamine-TPABr media, Zeolites, 1997, page 246
A very interesting article; there were so many trying to improve thermal conductivity by adding carbon nano tubes to polymers. Indeed, in numerous publications a slight improvement is observed, but not a big change as mostly wanted.
The approach here is ...
Article: Y. Kim, S. Kamio, T. Tajiri, T. Hayashi, S. Song, M. Endo, M. Terrones, M. Dresselhaus, Enhanced thermal conductivity of carbon fibre/phenolic resin composites by the introduction of carbon nanotubes, Appl. Phys. Lett., 2007, page 093125
This article describes pioneer work in the field of mesoporous materials. Today, over 11 Years ago, the so called SBA Materials are some sort of standard materials - at least in the academic field.
The synthesis of the Materials using template P123 are ...
Article: Dongyuan Zhao, Jianglin Feng, Qisheng Huo, Nicholas Melosh, Glenn H. Fredrickson, B. F. Chmelka, Galen Stucky, Triblock Copolymer Syntheses of Mesoporous Silica with Periodic 50 to 300 Angstrom Pores, Science, 1998, page 548
Transition-Metal-free Suzuki-Type Coupling Reactions: Scope and Limitations of the Methodology
published on 2009-04-24 11:13:52 by NicolasReiser
published on 2009-04-24 11:13:52 by NicolasReiser
Nicholas E. Leadbeater claimed in earlier articles transition-metal-free Suzuki-type couplings as the state of the art coupling reaction using watereous conditions free of metal. Indeed would be couplings without catalyst very interesting and the few ...
Article: Nicholas E. Leadbeater and Maria Marco, Transition-Metal-free Suzuki-Type Coupling Reactions: Scope and Limitations of the Methodology, J. Org. Chem., 2003, page 5660-5667
This is a valuable article for all those who deal with solubillization of Carbon Nanotubes in Water.
My question is: I observed a very high viskositiy of the used Sodium Dodecylbenzene Sulfonate solutions, so I'm not sure if the stability of the shown ...
Article: M. G. Islam, E. Rojas, D. Bergey, A. Johnson, A. Yodh, High Weight Fraction Surfactant Solubilization of Single-Wall Carbon Nanotubes in Water, Nano Lett., 2003, page 269
Well: Tried to reproduce these results, but the addition of Methylcellulose had no or the opposite effect of the proposed one in my experiments. (Addition to the synthesis gel). The shown SEM Pictures are so small that I can hardly identify the scale ...
Article: H. Wang, B. A. Holmberg, Y. Yan, Synthesis of Template-Free Zeolite Nanocrystals by Using in Situ Thermoreversible Polymer Hydrogels, J. Am. Chem. Soc., 2003, page 9928
Interesting article. I wondered that no information is given about the used compound chloropropylamine, the key compound for the functionalization of the carbon. It is a highly unstable compound since it can react with itself. Who was the supplier of this ...
Article: M. M. Titirici, A. Thomas, M. Antonietti, Aminated hydrophilic ordered mesoporous carbons, J.Mater.Chem., 2007, page 3412
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Comparison missing
Zeolites -
Chloropropylamine
J.Mater.Chem. -
Methylcellulose in Synthesisgel
J. Am. Chem. Soc.