Posts

November 11, 2014

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4:14 PM | Job posting: Scientist, Medicinal Chemistry, San Diego, CA
Via Twitter: We are looking for a highly motivated, hands on medicinal chemist to become a key member of Crinetics team. This individual will be an integral part of our medicinal chemistry effort to discover small molecule therapeutics. This is a growth and learning opportunity in a small company environment. Responsibilities:Design, synthesis and purification of small molecule drug candidates and other molecules as part of drug discovery programs. Qualifications:PhD in Organic […]
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4:00 PM | ε-Polypropylene - "And now I've lost it."
Crystalline polypropylene (PP) has always been one of the more interesting polymers because it is polymorphic - there are multiple crystalline phases that can form. Without any special processing, the α- phase dominates. This is the one that melts at about 170 oC or so. In the past few decades, nucleating agents for the β-phase have become commercialized. I've not worked with any β-PP, but it according to literature reports, it melts at about 150 oC or so. If the crystals are […]
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3:55 PM | Daily Pump Trap: 11/11/14 edition
Good morning! Some of this week's positions posted on C&EN Jobs: Livermore, CA: This Sandia senior manager position for biotechnology seems very interesting. Q-clearance makes it sound important. Trenton, NJ: Interesting "technical service chemist" position from Gelest -- first time I've seen that. M.S./Ph.D. desired. The Woodlands, TX: This must be the shortest job description I've seen in a while. From Flotek Industries: Candidate must have a fundamental understanding […]
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3:41 PM | Ivory Filter Flask: 11/11/14 edition
Good morning! A few of the academically-related positions posted this week on C&EN Jobs:Hempstead, NY: Hofstra is looking for an assistant professor of either computational chemistry or chemical education.Birmingham, AL: Samford University desires an assistant professor of organic chemistry.Washington, DC: Postdoc for organofluorine work at Georgetown.Houghton, MI: Michigan Tech is looking for an assistant professor of physical chemistry (experimental.) Is there a 4-year school in […]
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2:11 PM | From country girl to author on most cited paper: Nira Rosebrough Roberts
“I was a little country girl who really didn’t know much of anything. But I was very good at what I did and we made a good team.” That is Nira Rosebrough Roberts, the technician who worked with Oliver Lowry and two others to develop the Lowry method, a famous way of measuring the amount of protein in […]
Editor's Pick
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2:00 PM | Is triclosan safe? What you should know about this antibacterial chemical
Back in January, I wrote a post about the potential hazards of traditional cleaning chemicals. Based on questions and comments from friends and family, I am going to continue on that path, this time focusing on the antibacterial chemical triclosan. Triclosan gained some media attention earlier this year when a law was passed in Minnesota […]
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1:25 PM | Graphene-toughened composites for next generation aerospace structures
Plasma functionalisation technology produces significant improvements in mechanical performance and damage tolerance in carbon fibre composites.
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12:30 PM | Organolithium preparation, properties, and safe handling
“Auntie Markovnikov” left this in a comment […]Related Posts:A caution on procedures in organic synthesis journalsChemical safety tidbits and papers, from OPRDOPRD safety issueA safety warning on Togni’s reagentsEvaluating hazards of reactive chemicals, especially azides
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12:25 PM | Everything You Need to Know about Propylene Glycol
Propylene glycol has been a vital (and “silent”) ingredient in the synthesis of plastics and many other industrial processes for years, but it was recently brought to the public’s attention after its use in electronic cigarettes was questioned for safety reasons. This compound is no stranger to our food and cosmetic products, but nobody has [...]
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12:11 PM | What exactly is Google's 'cancer nanodetector'?
Last week, US tech giants Google made a splash in the media, announcing plans to develop new 'disease-detecting magnetic nanoparticles'.
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11:48 AM | Wie magnetische Atome untereinander konkurrieren
Physiker untersuchen Wechselwirkung von Elektronen.
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11:41 AM | If I had a million dollars…what I’d do!
£50,000 is an interesting sum for UK academics – it’s just about enough for a PhD studentship funded at RCUK rates and some consumables (potential issue with fees but not a major one). It’s probably about enough for a 1-year … Continue reading →
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9:47 AM | Cancer-killing nanodaisies (w/video)
Researchers have developed a potential new weapon in the fight against cancer: a daisy-shaped drug carrier that's many thousands of times smaller than the period at the end of this sentence.
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9:38 AM | Optical transmittance of multilayer graphene films
Researchers are confident that graphene may outperform existing transparent conductive materials. However, monolayer graphene might not be sufficient for fabricating a highly conductive electrode. The dilemma is that the transmittance of graphene film decreases as the number of layers increases. It therefore is of great importance to have a fast and reliable method to determine the number of layers in the fabrication and measurement of multilayer graphene.
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7:38 AM | A new nanomachine shows potential for light-selective gene therapy
Researchers have developed a novel light-responsive nanomachine as a new type of gene vector. The nanomachine allowed the team to accomplish systemic light-selective gene transfection into a tumor for the first time.
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6:37 AM | Gastronomía en el límite (IV): Comida basura
[Esta entrada participa en la I edición del Carnaval de Neurociencias]Cuando me refiero a «basura» lo hago con toda la cautela del mundo porque el término «comida basura» no me gusta especialmente, exige matices y es demasiado amplio y confuso. Pero para que nos entendamos, la comida basura es aquella que aporta cantidades desmesuradas de azúcares, grasas y sal.Comenzamos como venimos haciendo con esta serie. De forma audiovisual. En esta […]
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3:40 AM | Candid Chemistry - 2014 Edition
Occasionally, readers will send me funny pictures that somehow capture the chemistry cultural zeitgeist. Here's some from the last few months:At MIT, you can apparently chain your bike to a caffeine molecule!Seen at UC-Berkeley: the ultimate chemical Doom tribute(...to this guy)Still frame from LeVar Burton's charity read of Go the #*&@ to SleepDoes anyone recognize the (fake) elemental symbol poster? Geordi would never approve.Attn, Chemjobber: from Austria, a promotional poster […]
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2:50 AM | Invisibly Important
Who does more important work: The scene-stealing front man, or the patient show-runner backstage?Sumac in Fall, 2014Writing at the New York Times "Motherlode" blog, author David Zweig posits that, in an era of attention-grabbing occupations - Internet whiz-kids, Wall Street financiers, American Idols - the real winners may be those who select the quiet, thoughtful "enabler" roles behind the scenes. He claims that, though they may not get the glory, such "Invisibles" end up better paid and more […]

November 10, 2014

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10:57 PM | Minnesota professors respond on the 5 gram azide limit
I e-mailed Professor William Tolman, the chair of the University of Minnesota's chemistry department for further explanation of the 5 gram limit on azide reactions within the department. Here was a portion of his response: We estimated how big an explosion would occur if the azide prep was done on various scales, and what mitigation is readily available (blast shields, capabilities of hoods, etc.), and from this we estimated that a prep done on a 5 gram scale (or less) could be handled […]
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9:30 PM | All Falls Down
The latest (and last) issue of Chemical Heritage is out. In the new issue we observe the grim centennial of World War I’s opening. We look at the war’s effects on scientists and the effects of their creations on the rest of us. (We’ll explore themes of the science behind World War I in even greater depth in the first issue of Distillations Magazine, Chemical Heritage’s successor, due out in March.) With so much misery on our mind we greet a cheerier anniversary […]
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9:30 PM | All Falls Down
The latest (and last) issue of Chemical Heritage is out. In the new issue we observe the grim centennial of World War I’s opening. We look at the war’s effects on scientists and the effects of their creations on the rest of us. (We’ll explore themes of the science behind World War I in even greater depth in the first issue of Distillations Magazine, Chemical Heritage’s successor, due out in March.) With so much misery on our mind we greet a cheerier anniversary […]
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8:09 PM | NanoTechValley - a reference platform for collaboration in nanotechnology
NanoTechValley is a collaborative platform dedicated to providers and users of nanotechnology, designed for two purposes: to stimulate the emergence of R+D projects and to offer access to cutting edge equipment proposed by the community.
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7:48 PM | Engineers improve strength and flexibility of atom-thick films
Researchers have chemically engineered a new, electrically conductive nanomaterial that is flexible enough to fold, but strong enough to support many times its own weight. They believe it can be used to improve electrical energy storage, water filtration and radiofrequency shielding in technology from portable electronics to coaxial cables.
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7:23 PM | A Brief Summary of Inhalational Anaesthetics
If you’ve ever needed a tooth out, or had surgery of any kind, chances are you’ll have experienced use of an inhalational anaesthetic. All of the compounds shown above can induce general anaesthesia, and a range have been utilised since the initial discovery of nitrous oxide in the mid-1800s. Often, intravenous drugs will be used for induction […]
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6:08 PM | Noise in a microwave amplifier is limited by quantum particles of heat
Scientists have demonstrated how noise in a microwave amplifier is limited by self-heating at very low temperatures. The findings can be of importance for future discoveries in many areas of science such as quantum computers and radio astronomy.
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5:59 PM | AFM Probe Under Liquid From NaugaNeedles
NaugaNeedles is the first company to commercialize conductive AFM probes that can perform in liquid environments (e.g. AFM-SECM). This unique product is called Exposed End NeedleProbe (EENP).
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4:41 PM | The Silence of The Hiring Process
From the inbox, a common thought amongst chemistry job seekers expressed extremely well (I have made one redaction to protect their identity): I have been looking for a job for about 12 months and under-employed for 6. During this time I have conducted about a dozen initial interviews, 3 second interviews, and most recently, 3 interviews with a company that I felt really good interviewing with. In 8 of these cases, despite being told I could email with questions and explicitly asking if it […]
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4:29 PM | NYC teen burned in rainbow demonstration suing for $27M
Paraphrasing Captain Spock, the rainbow demonstration is beginning to reside in the hands of the attorneys. From the New York Post: The family of a 16-year-old boy who was severely burned when a high school ​chemistry experiment went horribly haywire is suing the city for $27 million over his injuries. Parents Yvonne and Claudio Yanes say Beacon High School on W. 61st Street had received a video from the U.S. Chemical Safety Board warning that a procedure called the […]
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4:18 PM | Job posting: process chemist, San Diego, CA
From the inbox, a process chemist position:Process Development Chemist (Scientist level $60-$80K) BS/MS Chemistry (maybe Biochem) 5-10 years experience Experimental design, Analytical methods “Recipe development” i.e. solvent ratios for extractions Knowledge of reaction systems Chromatography Tech transfer from lab bench to pilot scale Knowledge of bioprocess beneficial Interested? Contact Nathan Radosevich (recruiter for RemX […]
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4:09 PM | University of Minnesota chemistry has limited the scale of azide reactions?
Also in this week's C&EN, a really worthwhile article from Jyllian Kemsley talking to William Tolman, the chair of the chemistry department, on their recent TMS-azide explosion. While the whole article is worth reading, I think this section detailing Professor Tolman's decisions was very interesting (emphasis mine):“Overall, there was clearly a lack of proper hazard assessment,” Tolman continues. “They didn’t stop and say, ‘This is a really dangerous […]
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