Posts

November 16, 2014

+
6:40 AM | DuPont methanethiol leak results in 4 deaths in LaPorte, TX plant
Via the New York Times: Four Texas workers died and a fifth was hospitalized Saturday morning after a hazardous gas leak at a DuPont chemical plant east of Houston. The workers were overcome about 4 a.m. Central Standard Time, apparently as they were responding to the leak of the gas, methyl mercaptan, according to the plant’s manager, Randall Clements. Methyl mercaptan is mixed with odorless natural gas to give it its characteristic rotten-egg smell. The company said […]

November 15, 2014

+
11:49 PM | Falsification and chemistry: What’s the rub?
Roald Hoffmann has often emphasized the limitationsof falsification for the everyday practice of chemistryMy last post on the role and limitations of falsification leads to a point I have made before: the fact that falsification is far less important for chemists than it is for, say, physicists or mathematicians. My take on the relative unimportance of falsification comes mainly from Roald Hoffmann who is as much of a philosopher of chemistry (and a poet) as a professional Nobel Prize […]
+
10:53 AM | Science is not just a theory
I say theory, he says theory but what do you think we mean when we talk about theories, like Big Bang theory, the theory of evolution by natural selection, the theory of relativity (both general and special) and quantum theory. Well, we don’t mean it’s “just” a theory, like some vague idea a bloke down […]Science is not just a theory is a post from the science blog of science journalist, photographer and musician David Bradley Subscribe to our Email […]
+
9:17 AM | Put them on hold
Songs of Experience by Dave Bradley It’s a quarter of a century since the fall of the Berlin Wall, but still lives are put on hold by those who will divide and subjugate us. Isn’t it time, once again, to reject their calls, put them on hold? Put them on hold I made the call […]Put them on hold is a post from the science blog of science journalist, photographer and musician David Bradley Subscribe to our Email Newsletter
+
2:54 AM | Falsification and its discontents
Karl Popper's grounding in the age of physics colored his views regarding the way science is done. Falsification was one of the resulting casualties (Image: Wikipedia Commons)Earlier this year the 'Big Questions' website Edge.org’s asked the following question: “What scientific idea is ready for retirement”? In response to the question physicist Sean Carroll. Carroll takes on an idea from the philosophy of science that’s usually considered a […]

November 14, 2014

+
5:59 PM | Fun card game, I'll bet
From Carney, J.M. "Retrosynthetic Rummy: A Synthetic Organic Chemistry Card Game." [1]Here's a fun idea for a card game: "Retrosynthetic Rummy" [1]:ABSTRACT: A deck of cards and a card game have been developed in an effort to make practicing organic chemistry and synthesis more fun for students. The game is played as a variation of rummy, in which players collect sets of similar cards and runs of cards in a synthetic sequence. This card game reviews knowledge of functional groups […]
+
4:50 PM | Warping in topological insulators
Topological insulators are promising to develop into a material for lossless electricity and information transport. Now, researchers investigated for the first time whether the direction of motion of electrons in topological insulators affects their behavior.
+
4:42 PM | Is Dow Chemical going to have a proxy fight?
Every time I keep thinking that Dow Chemical may have finally been able to tell activist investor Daniel Loeb to take a hike, he keeps coming back. What a glutton for punishment.Loeb's latest effort is this flashy website which makes yet another logically inconsistent attempt to acheive changes that he desires at Dow. This website is designed to inform stockholders of his opinions and push for a proxy fight to get two of his handpicked directors on the board.I'm guessing that Loeb hopes that […]
+
4:26 PM | Testing travails for shale crude on rail
I have been following the shale oil on rail story a little. I don't know why, but I find it (and the Wall Street Journal's coverage of it very interesting), especially since it hinges on accurate chemical testing: Regulators set to decide on crude-by-rail shipping rules are relying on testing methods that may understate the explosive risk of the crude, according to a growing chorus of industry and Canadian officials. The tests’ accuracy is central to addressing the safety of […]
+
12:27 PM | Three-dimensional microtechnology with Origami folding art
A new technique can form the basis for a new three-dimensional production technique that avoids the limitations of the current two-dimensional microtechnology.
+
12:10 PM | Exam Drug Fail
Exam season is always a stressful time for students and every time it comes around everyone prepares in their own to make sure they can perform their best, even if it means taking performance enhancing drugs. There’s a prescription drug called Modafinil that can enhance your concentration. Personally I've never heard of anything like this till yesterday, the only drug I heard of at exam season is caffeine pills. Loads of students would take caffeine pills at exam season to […]
+
10:14 AM | Chemists develop nanoporous molecules that bind greenhouse gases
Chemists have developed a molecule that assembles spontaneously into a lightweight structure with microscopic pores capable of binding large quantities of several potent greenhouse gases.
+
10:08 AM | New form of crystalline order holds promise for thermoelectric applications
A research team reports that it has discovered an entirely new form of crystalline order that simultaneously exhibits both crystal and polycrystalline properties and holds promise for improving the efficiency of thermoelectric devices.
+
7:52 AM | A nanolamp with lightning-fast switch
A light source and its transistor-operated brightness control shrink to the size of a single molecule.
+
7:47 AM | Electrons move in different circles
Scanning tunneling microscopy reveals the exotic properties of an unusual type of electron.
+
7:34 AM | 'Topological insulators' promising for spintronics, quantum computers
Researches have uncovered 'smoking-gun' evidence to confirm the workings of an emerging class of materials that could make possible spintronic devices and practical quantum computers far more powerful than today's technologies.
+
7:23 AM | Light-harvesting: Mimicking photosynthesis with man-made leaves
A new, efficient light-harvesting system based on the principles of natural photosynthesis is developed by researchers at Tokyo Tech.
+
1:45 AM | Publication of the week, number 51, 14th November 2014
This week’s offering appeared in Angewandte Chemie and was presented by Prof. Waldmann and discusses his results with the 1,3-dipolar cycloaddition leading to the 4,7-diazabicyclo[4.3.0]nonane unit which is an integral part of various alkaloids such as ajmaline, vallesamidine and so on. The process under discussion is of course well described in the literature and I have commented […]

November 13, 2014

+
10:39 PM | On the Record
In the summer issue of the magazine we asked readers to submit their personal stories about pH meters. One of our readers, Alan Weiss, sent us a compelling tale that involves a tannery, a Beckman Model G pH meter, and a lot of guts. I graduated from P. S. duPont High School in Wilmington, Delaware, in January 1945, at the tender age of 16.  Just about all of my classmates went directly into military service, since World War II was still raging. But not me. I was too young. I […]
+
10:39 PM | On the Record
In the summer issue of the magazine we asked readers to submit their personal stories about pH meters. One of our readers, Alan Weiss, sent us a compelling tale that involves a tannery, a Beckman Model G pH meter, and a lot of guts. I graduated from P. S. duPont High School in Wilmington, Delaware, in January 1945, at the tender age of 16.  Just about all of my classmates went directly into military service, since World War II was still raging. But not me. I was too young. I […]
+
9:43 PM | VSEPR & Shapes of Molecules
One for the chemistry students (and teachers!) out there today, with a look at how we can work out the shapes of some simple molecules using Valence Shell Electron Pair Repulsion (VSEPR) theory. These shapes are decided by the arrangement of electrons around the central atom in the molecule. VSEPR works on the assumption that the […]
+
6:51 PM | La première guerre mondiale et le tabagisme
Les Manchettes scientifiques d’Ariel Fenster «Si vous me demandez ce dont nous avons besoin pour gagner cette guerre; je réponds, du tabac autant que des balles». C'est ainsi que le général John Pershing, commandant du corps expéditionnaire américain répond en 1917 à Washington. Une illustration du rôle que jouait le tabac dans […]
+
5:46 PM | Help a chemist? Analytical chemist looking in southern California area
A reader writes in to say that they are looking for a position for an experienced M.S. analytical chemist in the southern California area. Lots of GC experience, pesticide method development in GLP environmental, 4 years of QC lab experience w/HPLC, GCMS, and LD/TD-MS. Anybody know of any positions available? If so, e-mail me at chemjobber -at- gmail/dot/com and I'll put them/you in touch. Feel free to leave "situations wanted" ads in this thread -- try to keep them under ~200 words,
+
4:51 PM | Bio-inspired bleeding control with platelet-like nanoparticles
Taking a cue from the human body's own coagulation processes, researchers synthesize platelet-like nanoparticles that can do more than clot blood.
+
4:42 PM | AFM Raman workshop focusing on both Tip Enhanced Raman and co-localised AFM Raman
Bruker and Renishaw would like to invite you to an AFM Raman workshop focusing on both Tip Enhanced Raman and co-localised AFM Raman on Tuesday 25th November.
+
4:35 PM | Gastronomía en el límite (V): Coprinus atramentarius [Bonus: La muerte de Keith Moon]
Todas las setas son comestibles. Todas...... lo que ocurre es que algunas solo se pueden comer la primera vez. :-PVale. No huyáis todavía. Chascarrillos aparte hoy hablaremos de un hongo que puede comerse las veces que te dé la gana sin que produzca ningún efecto tóxico adverso. Bueno, eso no es del todo cierto porque si bebes alcohol después de consumirlo, aunque sea en poca cantidad, te puedes poner muy malito.Nunca lo mezcles con alcohol | […]
+
4:17 PM | A highly robust, efficient nanoparticle-based platform to advance stem cell therapeutics
Researchers have developed a highly robust, efficient nanoparticle-based platform that can regulate gene expression and eventually stem cell differentiation. NanoScript is the first nanomaterial TF protein that can interact with endogenous DNA.
+
4:12 PM | Molybdenum disulfide has emerged as a leading successor to graphene
Northwestern University's Mark Hersam is working to isolate atomically thin layers of molybdenum disulfide, a material with applications in electronics, optoelectronics, solar cells, and catalysis.
+
2:50 PM | Job posting: organic chemist, Rochester, NY and analyst, Henderson, CO
From the inbox:"Might be a great job for someone with general organic synthesis skills and especially with small-scale chemical development experience. Of course, the person would have to be willing to go over to the Dark Side of materials chemistry..."Orthogonal Inc. in Rochester, NY, is seeking a Research Organic Chemist to carry out the design and synthesis of specialty photoactive compounds and polymers. The position requires:PhD in Organic Chemistry or related field 0 - 10 years […]
+
2:44 PM | Daily Pump Trap: 11/13/14 edition
Good morning! A few of the industrial positions posted on C&EN Jobs: Chicago, IL: A company is looking for a glovebox salesperson? Interesting, never seen that before.Dayton, OH: UES (a defense contractor) is looking for a Ph.D. polymer researcher.When an organization's internal language meets the outside: I didn't know that Colorado Springs was home of the National Swimming Pool Foundation, or that they had need of a Ph.D. chemist to be a product development manager. But the language […]
2345678910
464 Results