Friday, October 21, 2016

0.1 micron syringe filters

A collection of small, useful things (links):
Again, an open invitation to all interested in writing a blog, a hobby that will bring you millions thousands hundreds tens of dollars joy and happiness. Send me a link to your post, and I'd be happy to put it up.

Why not a chemistry Cannonball Run?

A successful jerry-rigging
Credit: Benjamin Preston, The Drive
I promise that this isn't turning in to a car blog, but I cannot resist this piece by Benjamin Preston at The Drive, about a Cannonball Run (i.e. a cross-country automobile race.) The stipulation of this particular race is that the vehicle had to have been purchased for less than $3000 and be a vehicle from the 1970s. You should read the whole thing, but I especially enjoyed this part about fixing an alternator that had been problematic the entire trip:
...Perhaps as subliminal compensation for my failure to address the alternator issue back in New York, when it would have made a difference, I had, at the last minute, thrown the Omega's original alternator into the back of the trunk. Covered in oil and grime, it had come with the car's 6-cylinder engine when it had rolled off the assembly line in Flint back in 1974. I had little confidence in this soiled, elderly part, which was why I'd sprung for the remanufactured-in-Mexico Autozone alternator to begin with. 
This stop required more pause for thought, but the headscratching cost us time. After installing the oily original-equipment alternator, Hart and I discussed the heat problems associated with an under-sized alternator. What if, he reasoned, we could find a way to cool the alternator, thereby keeping it from burning out like the others? 
"Can you run without the bonnet?" he asked, suggesting that maybe we could remove the hood and strap it to the roof to allow cool air to flow across the alternator. I wasn't into this one, but then he wondered aloud if we could devise some sort of ducting to cool the overheating part. 
Next to the dead-end parts store we'd stopped at was a Tractor Supply Co., a veritable trove of useable odds and ends. From there, we picked up a length of flexible RV sewage hose, cutting it in half to form two shorter hoses. Zip-tying one end of each into the slots on the car's lower bumper, we routed the hoses between the hood and radiator support, then zip-tied the other ends to the alternator. Hart fixed a bottomless McDonald's cup into one of the hoses to form a sort of intake. The idea was that cold air from outside would, at speed, be forced into the hoses and up onto the alternator to keep it cool. Almost an hour later, we wrapped up our junior high school engineering project and got back on I-40. 
Although the headlights dimmed whenever the fan kicked on, the charge light left us alone for the rest of the trip...
Successful improvisation is really one of those things that has a psychological payoff like no other. It's good for team building (when it works, that is) and it can almost be fun to solve a problem under pressure.

Also, wouldn't it be cool if there was some sort of chemistry-related endurance race? Maybe it could be something where you had to improvise and perform a 4 step synthesis, but each reaction had to be run in a different time zone? I dunno, I'm probably crazy, but I'd enjoy running a recrystallization in the middle of the night while trying to figure out the fastest route to the next fuel stop...

Thursday, October 20, 2016

STEM, computer workers and their degrees

Credit: Census Bureau
Someone asked a really good question about chemists and computer occupations over at the Chemistry Reddit:
It seems to me that a disproportionate number of chemists end up taking up programming to some extent, and sometimes transfer to that field entirely. Does anybody else feel the same way? And why do you think this would be?
I thought it would be interesting to take a look at the Census Bureau's data about this, where they correlate the various STEM degrees and the occupational fields of their degree holders through the American Community Survey. As you can see, the green/teal line is the number of B.S. physical science degree holders who go into occupations classified as "computer workers." As you can see, it's large, but not especially large compared to those who get engineering degrees or computer science degrees.

To get further into the weeds, I calculated the percentages of computer workers for degree holders for the "STEM" fields:

Computers, mathematics and statistics degrees: 43% computer workers
Engineering degrees: 15% computer workers
Physical science degrees: 7% computer workers
Biological, environmental and agricultural sciences degrees: 3% computer workers
Psychology degrees: 3% computer workers
Social sciences degrees: 4% computer workers

Looking at the data, it seems to me to be equivocal. If you compare to "TEM" workers, no, chemists do not end up disproportionately as programmers. However, the data does suggest that, of the "S" fields, the physical sciences disproportionately end up as computer workers. 

Daily Pump Trap: 10/20/16 edition

A (very) few of the positions posted at C&EN Jobs: 

Aliso Viejo, CA: Calhoun Vision is looking for an experienced M.S./Ph.D. chemist to be a director of chemical sciences and engineering. They'll be "responsible for the development and implementation for all formulation and automation processes for the fabrication of the silicone polymer lens technology." Also, a principal analytical chemist position from the same company. 

RTP: AgBiome is looking for a M.S./Ph.D. chemist to work on formulation for "novel biological pest and disease control products."

Colorado Springs, CO: The Institute for Defense Analyses is looking for a research analyst to work with the Missile Defense Agency. M.S./Ph.D. desired.

Boca Raton, FL: Duane Morris is an IP law firm; they've posted a patent agent/technical advisor position and an intellectual property associate position. 

Ventura, CA: JH Biotech, Inc. is looking for a M.S./Ph.D. organic chemist for a research scientist position; local candidates preferred. 70-80k offered. 

A broader look: Monster, Careerbuilder, Indeed and show (respective) "1000+", 345, 10,121 and 19 positions for the search term "chemist." LinkedIn shows 2,273 positions for the search term "chemist". I did a little experiment today where I searched the following job titles both without quotes on the job title, and with. The 'without' quotes is the first number. Analytical chemist: 184/216. Research chemist: 49/39. Formulation chemist: 41/35. Synthetic chemist: 405/15. Medicinal chemist: 51/15. Organic chemist: 63/28. 

Wednesday, October 19, 2016

What's more expensive, Boston or San Francisco?

A cherished friend of the blog writes in with the following question; it has been [redacted] for privacy: 
I am trying to gauge the growth of the biotech/pharma sector in the Bay Area over the last few years: as you know, Boston is still the top destination, so my main concern is whether I will find other jobs if [things don't work out].  
[Also], I was wondering what a “good” salary is for the Bay Area. Currently [my spouse] is finishing grad school so we are pretty much a single income family, but [they] are getting [their advanced degree in tech] so we’re hoping that [they] will be making a decent amount of money soon. Any sources which can help me compare, for instance, what the equivalent of say a 120K salary in Boston would be for SF would be immensely helpful.
This is a good question, and one that I don't really have a strong sense of. It seems to me that San Francisco will continue to play "1A" to Boston's "1" for the foreseeable future. Absent some sort of bizarre catastrophe that strikes Silicon Valley, Stanford and UC-Berkeley (a series of huge earthquakes and fires?), it's hard for me to imagine that the science and financial ecosystem of the Bay Area will lose its relative position in the biopharma world, either nationally or internationally.

A brief look at median incomes and household income percentiles may be instructive, regarding pay scales. There are plenty of websites that compare cost of living, and I don't really know if any of them are better than others. I invite reader suggestions on that one.

However, I think one of the main drivers of high cost of living is the relative number of people with high incomes (I note here that I have read exactly none of the relevant social science around this.) So, a comparison of San Francisco County and Suffolk County, Massachusetts (using the Census Bureau's 2014 American Community Survey):

Suffolk County, MA: median income of $54,169, 26.9% earn more than $100,000
San Francisco County, CA: median income of $78,378, 40.9% earn more than $100,000

Nearby counties:

Middlesex County, MA: median income of $83,488, 42% earn more than $100,000
Norfolk County, MA: median income of $86,469, 43.6% earn more than $100,000
San Mateo County, CA: median income of $91,421, 46.2% earn more than $100,000 
Marin County, CA: median income of $91,529, 58.2% earn more than $100,000

This suggests to me that one would have to earn significantly more than $120,000 ($174,000?) in order to keep the same lifestyle.* That is, of course, likely a ridiculous wild guess. Readers, please tell me how wrong I am.

UPDATE: Thanks to Joe Q., I've decided to add some of the adjoining counties. 

*Or, likely, that's how much you would have to earn to stay in the immediate metro area of the city, and not have a longer commute? 

Tuesday, October 18, 2016

2017 Chemistry Faculty Jobs List: 401 positions

The 2017 Chemistry Faculty Jobs List (curated mostly by Andrew Spaeth, with minor help from me) has 401 positions. The open thread is here. 

Daily Pump Trap: 10/18/16 edition

A few of the positions posted at C&EN Jobs: 

Plymouth, MN: Cargill, looking for a "Global Bioanalytical Lead". M.S./Ph.D. with experience, looks like. "This position requires strong analytical chemistry skills, especially related to biotechnology field, as well as strong leadership skills. The incumbent will be accountable for overall direction of bioanalytical within the global BioRD, provide leadership in assessing needs of BioRD and making sure those needs are met and coordinated across all BioRD locations."

Kenilworth, NJ: Merck, looking for a M.S./Ph.D. with experience in high-throughput laboratory equipment and biologics testing. 

Los Angeles, CA: Matrix Sensors, Inc. is looking for a B.S. chemist to be a laboratory technician; looks to be something about gas sensors? 2-5 years experience is what they're looking for - I'd be surprised if they can get that.

Virginia Beach, VA: These positions always are eye-catching, especially in their vagueness:
Point One USA, LLC seeks a PhD level Chemist to support advanced Explosive Ordnance Disposal (EOD) courses of instruction specifically designed to train EOD operators assigned to special operations units and to conduct test and evaluation for federal government agencies. Candidates must have verifiable experience working with and synthesizing energetic materials. Candidates must have the ability to teach non-chemist personnel to familiarize and educate them on the hazards associated with chemical warfare agents, terrorist homemade explosives and precursor materials. Willingness to travel both domestically and abroad on a frequent basis is a must. Ability to work in austere, dynamic and diverse environments with multiple professional disciplines is essential. Some lifting, collateral duties and work with hazardous materials is necessary. Candidates with military, biology or radiological training/experience is preferred. 
- Must have a PhD
- Must relocate to Virginia Beach, VA
- Must be willing to travel
- Must be able to teach non-chemist
"....Evaluations for federal government agencies." I like it. 

Ivory Filter Flask: 10/18/16 edition

A few academic positions posted recently at C&EN Jobs:

Los Angeles, CA: UCLA is looking for an assistant professor of computational chemistry. "Expertise in the computational design of catalysts for organic, organometallic, and inorganic reactions is preferred."

Houston, TX: The University of Houston, looking for an assistant professor of bioorganic chemistry.

Montreal, Quebec: The University of Montreal is looking for two assistant professors, one in polymer chemistry and one in inorganic chemistry.

Athens, GA: The University of Georgia is searching for an assistant professor of analytical chemistry.

Lacey, WA: St. Martin's University, looking for two assistant professors:
The Department of Natural Sciences at Saint Martin’s University seeks to fill two full-time, tenure-track, entry-level faculty positions in the Chemistry program. One position is for an expert in the field of Analytical or Biochemistry and the other is for an expert in Environmental, Green, or Geochemistry. The finalist for the latter position will regularly teach Physical Geology, a required part of the curriculum for engineering majors.
I think they're advertising for two positions, but the way that it is worded, it almost seems like 3. It's most likely two.

Baltimore, MD: A postdoctoral fellowship in the laboratory of Professor Andrew Horti in synthetic medicinal chemistry. "Spacious" labs - that's not a detail you see every day.

Colorado Springs, CO: Not every day that you see these types of positions, but I see that Colorado College is looking for a B.S./M.S. medicinal chemist for a research project.

Faculty search: Okinawa Institute of Science and Technology Graduate University

The Okinawa Institute of Science and Technology Graduate University invites applications for at least 5 new faculty positions as part of its planned expansion. Targeted areas for the current search include*: 
Chemistry: Chemical Biology; Materials Chemistry (including Polymer Chemistry, Metal-Organic Frameworks)
Life Sciences: Cell Biology; Theoretical Biology; Behavioral Learning Theory
Mathematics: Discrete Mathematics; Computational Sciences; Big Data Analysis
Physics: Quantum Information; Ultracold Physics; Condensed Matter; Cosmology/Gravitational Waves 
We are seeking applicants with excellent scholarship and creativity. Successful candidates are expected to establish an active program of research, supervise student research and teach in the graduate program. Generous research resources are provided which may be supplemented with external grants. Appointments will be Tenure-Track or Tenured. Starting date is flexible.
*Applications from strong candidates in other fields may be considered.
Full job description here. Best wishes to those interested.  

Monday, October 17, 2016

Nice to see the divide has always been there

Also in this week's C&EN, a fun little letter: 
C&EN’s recent article on the shortage of vanilla beans (Sept. 12, page 38) brought to mind a story from the early days of cellophane at DuPont. 
The cellophane marketing organization was being introduced to a new series of films coated with polyvinylidene chloride from Dow Chemical rather than nitrocellulose from DuPont. The marketing organization was, by design, made up of nontechnically trained personnel. 
After the presentation of the virtues of the new films, two high-ranking marketing managers were heard involved in a discussion on “where would they get all of the vanilla beans?” 
Elwood P. Blanchard Jr.
Mendenhall, Pa.
I'm amused to see that the sniping between technical types and marketing types has always been with us.  

This week's C&EN

A few of the articles from this week's issue of Chemical and Engineering News:

Saturday, October 15, 2016

View From Your Hood: Toronto edition

Credit: Christine Le
Christine Le, via Twitter: "Though I hate climbing all the stairs from the NMR lab, I get to see this amazing view each time #viewfromthehood #toronto"

(got a View from Your Hood submission? Send it in (with a caption, please) at; will run every other Friday.)

Wednesday, October 12, 2016

Always a good time to play "hey, this picture looks funny."

Credit: F.X. Coudert
Let's play the game of nanoparticles… Ag vs ZnO, two different syntheses, two different papers in @ELSchemistry journals.

Why can't we have an NMR in a plane?

Credit: Wikimedia
Via the chemistry Reddit, is that really a mass spec in a NASA plane? (Looks like it is possible, and here's a similar picture?)

I get the sense that no one's mounted a NMR in a plane or a boat or a car. Too bad.

UPDATE: Thanks to bad wolf, I see that underground NMR for oil wells is real. Also, check out this company that actually sells NMRs to analyze groundwater. Of all the places where I expected to find NMR, underground was not one of them.

UPDATE 2: In the comments, examples of NMR in cars and proposals for NMR in space!