Category: technology

Tuesday, 1 April 2014

10:33 – We’re back at comfortable inventory levels on all our kits, so I can spend some time today placing orders for more components.

In fact, I just cut a PO for a bunch of components. In what must be a corollary of Murphy’s Law, the one line item we really, really need (we’re down to two in stock) was for 480 10 mL graduated cylinders. That, of course, is the one item the vendor is back-ordered on. Oh well, I’ll pick up a few from another vendor, enough to hold us until the back-order ships in about 30 days.

For ten years our computers been running Linux exclusively, but I’m about to bag Linux in favor of Microsoft Windows. Don’t get me wrong. I still don’t like Microsoft, but I dislike it less than I dislike Apple. And what other realistic options are there for the desktop? I’m tired of desktop Linux “upgrades” that break things that used to work. I’m tired of not being able just to plug in a mainstream scanner and have it work without hours of screwing around with manually loading drivers and editing configurations. I’m tired of entire classes of application software disappearing. Right now, for example, there is no longer a WYSIWYG HTML editor that runs on Linux Mint. And I’m tired of mainstream applications like Firefox and Libre Office that crash frequently and remove useful features with every “update”. I’m just tired.

And, no, this is not an April Fools post. I’m seriously thinking about bring up one Windows 8/8.1 desktop system just to see if I can live with it. But I think I’ll wait and give Linux one more chance. When Ubuntu/Kubuntu/Xubuntu LTS releases later this month, I’ll take a look at them and see if I can live with one of them.


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Wednesday, 12 March 2014

09:35 – Thanks to reader L. Daniel Rosa, who sent me the following link:

http://www.foldscope.com/

This is not a toy. It’s a serious instrument, albeit one the size of a standard microscope slide and a cost of only $0.50. They’re calling for 10,000 volunteer beta testers, each of whom will use the microscope to do something of their choice and write up a short lab session, protocol, or whatever. These will be winnowed and combined into an open-source biology/microscopy manual. I’m going to submit an application to be a beta tester as soon as I post this. I’d encourage any of my readers with any interest at all in microscopy or citizen science to do the same.


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Wednesday, 29 January 2014

09:09 – It’s currently 17F (-8C) with a stiff breeze. The forecast high today is a degree or two below freezing. We had maybe an inch (2.5 cm) of snow from about noon yesterday through late evening. I’m sure the main roads are plowed and salted, but secondary roads and residential streets are still in bad shape. Barbara drove the Trooper today. She didn’t even bother to take it out of 4WD when she got home yesterday afternoon. Today I’ll be making up solutions and filling bottles for more kits.

I just got back from walking Colin. We just went down to the corner and back, but I took him off-leash this morning, for the first time since he was a small puppy. He followed our usual route, and came on the run each time I called him. I’d trust him off-leash routinely except for one thing: there are a couple of dogs in the neighborhood that he really, really doesn’t like. One of them, Jack, a full-size poodle, lives down at the corner. Jack is extremely aggressive, and nearly attacked Colin once. Jack approached us on a dead run, snarling as he came. Colin’s hackles rose and his fangs bared as he prepared to do battle, and I had actually started my turn to snap-kick Jack and break his spine when he veered away and took off running. No one ever said that poodles aren’t smart.


10:46 – Oh, yeah. I installed the Roku 3 box yesterday and put the old Roku box on the shelf to serve as a spare. The new one works fine with Amazon Instant and Netflix streaming, which is all we care about. Amazon looks the same as it did on the old box, but now we have the new Netflix interface. I’m still not sure whether I like it or not. Supposedly the Roku 3 is much, much faster than our old Roku, but I don’t see any difference. The new Roku drives our TV at 1080P versus 720P for the old one, but again I see no difference. One nice feature of the new Roku is the USB port and the box’s support for playing back MP4, MKV, and a few other video formats. I haven’t tried that yet, but I’ll probably copy season 7 of Heartland to a 32 GB flash drive and see what it looks like.

I just ordered six bottles of 1,000 each 650 mg sodium bicarbonate tablets from Amazon Prime for about $17.50 per bottle. That’s sufficient for about 240 chemistry kits. Amazon showed another vendor that sold the tablets at $11.00 per bottle of 1,000, but their shipping charges were outrageous. I think it was something like $8.95 for the first bottle, which was fine, but additional bottles added something like $6 each to the shipping cost. That company is advertising an unrealistically low price for the product and making up the difference in shipping. I hate that.


14:37 – Geez. I just tried to order three kilos of bacteriology-grade agar from BioExpress, who’d sent me a catalog a couple months ago. I’m always on the lookout for new vendors, and these guys carry some interesting stuff.

So I added the agar to my cart and clicked on checkout. The site insisted I set up an account, which I did. But when I finished it wouldn’t let me complete the order. Instead, it said that my application for an account would be reviewed within 48 hours. So I called them and left voicemail for the guy who approves new accounts. He mailed me back to say that their agreements with their vendors do not allow them to ship “chemicals” to residential addresses. He suggested that he might be able to get an exception from the company that supplies their agar, but he thought that was a long shot. This is agar we’re talking about. The stuff is EDIBLE, and about as innocuous a chemical as I can imagine.

I emailed the guy back and told him it wasn’t worth either of our time and hassle and that I’d just order the agar from one of our regular vendors, which I did.

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Sunday, 26 January 2014

10:18 – I finally got Barbara’s new Kindle Fire HDX working yesterday. The problem was, attempting to connect via Wi-Fi to our D-Link DIR-615 WAP/router reproducibly crashed the router. Not just the Wi-Fi, you understand, but the whole router. The only fix was to turn off the Kindle and power-reset the router. As it turned out, the fix was easy. The WAP had been set to support 802.11b/g/n. Simply turning off the support for 802.11n fixed the problem. So now we have an n-less WAP, but Barbara’s Kindle works.


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Friday, 24 January 2013

08:06 – It’s cold this morning, 8F (-13C) not counting wind chill. Not that I pay much attention to publlished values for wind chill. They’re entirely arbitrary because wind chill values are subjective. That is, they’re calculated by a formula, which varies from country to country, but those formulae use constants that really should be variables whose values vary according to individual perceptions.

Barbara’s mom is not doing well, either physically or mentally. Barbara’s taking her to the doctor this afternoon. Barbara and Frances are looking into getting Sankie on the waiting list for another facility that provides assisted-living services. The issue is that they need to get something lined up before Sankie really needs those services, because otherwise they may end up having to take whatever is available, which may not be very good. Frances visited once facility called Homestead Hills, which has an excellent reputation and is closely associated with Sankie’s doctor. Frances was very pleased with the facility. They want $1,500 to put Sankie on their waiting list, but I told Frances I saw no downside to getting Sankie on the list. That $1,500 will keep Sankie on the list forever, and if a place does become available they don’t have to take it. If they subsequently change their minds or move Sankie elsewhere, Homestead Hills will refund their deposit in full. Homestead Hills costs about $1,000/month more than where Sankie is now, but Dutch’s VA insurance should pay at least part of that difference.

We’re low-stock right now on both biology and chemistry kits. I have everything I need to make up a couple dozen more biology kits, but I need to fill bottles and make up chemical bags for the chemistry kits. So that’s what I’ll be doing today.


11:16 – I opened my last box of 200 half-sheet mailing labels yesterday. This morning, I was printing bottle labels when the printer ran out of paper, and I loaded my last 50 or so sheets of those labels. So it was time to order labels.

I went to the ibuyofficesupply.com web site. Two or three years ago, they had good prices on those labels and other supplies I use a lot of, so I’ve been ordering from them ever since. I noticed that they’d lowered the bar for free shipping from $75 to $45. It crossed my mind that Amazon was affecting their business, which made me realize that I could probably just order what I needed from Amazon. Sure enough, Amazon Prime had both types of labels, as well as the printer paper I needed. So I ordered all of that, and threw in a Roku 3 streaming video player. When Barbara’s TV remote died the other day, I realized how dependent we are on our original Roku XL|S box. If the box failed, we’d be SOL until we replaced it. Even if the remote failed, we’d be SOL, since there are no controls on the box itself. After checking reviews and comparisons, it was pretty clear that the Roku 3 was the standout choice, at least for our viewing habits. It’ll be here early next week. I’ll replace the old box, and keep it as a spare.

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Monday, 2 December 2013

08:15 – Happy Birthday to Barbara, who turns 20:39 today.


Our D-Link DIR-615 router/WAP has started dropping the WAN connection sporadically, so I ordered a D-Link DIR-826L to replace it. I hooked it up yesterday, and it didn’t work. Didn’t work as in wouldn’t even recognize that the cable modem was providing a WAN link. So the DIR-615 is back in place until I figure out what’s going on with the new unit.

I just read a big article in the morning paper about Common Core. The article couldn’t say enough good things about Common Core and its emphasis on “critical thinking”. The real problem with Common Core, which the article failed to mention, is that many students are not capable of critical thinking. Nor are many teachers.

The fundamental problem is that the powers-that-be refuse to recognize that there are very real and very large cognitive differences between the best, the average, and the worst students, which simply reflects the population at large. Remember the old saying: One can’t teach calculus to a horse. But these cargo-cult thinkers apparently believe that any student can learn any subject, regardless of difficulty, if only they’re given the opportunity. If only that were true, but it’s not.


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Friday, 15 November 2013

07:37 – Obama’s so-called “fix” turns out to be nothing at all. It’s simply a cynical attempt by Obama to shift the blame for people losing their health insurance from himself to the insurance companies. Note two key facts: First, Obama did not require insurance companies to renew these “non-compliant” policies; he’s simply allowing them to do so. Second, Obama said nothing about how much insurance companies could charge to renew these policies.

This puts insurance companies between the proverbial rock and hard place. Because the companies are being forced to insure uninsurable people, they need lots of younger and healthier people to pay much more than they have been paying–if indeed they’ve been paying anything–to subsidize the costs of covering all those older, sicker people. For that matter, they need older, healthier people to pay more as well, again to subsidize the poor risks. So, the insurance companies now have two reasonable courses: First, they can simply let those older, less-profitable policies expire, and force all those former customers to buy grossly-overpriced new policies on the exchanges. Second, they can let people keep their old policies for another year, but if they do that they’ll probably need to double or triple the premiums in order to get enough money out of those original policy holders to subsidize the poor risks they’re being forced to insure. Either way, most people end up paying a lot more for their health insurance. But, Obama thinks, this way they’ll blame the insurance companies instead of him. Bastard.


A few months ago, I mentioned that one of our new neighbors, a high school biology teacher, had been arrested for having sexual contact with a student. The school system immediately fired him, of course, and he was arrested and jailed on $500,000 bond. The paper this morning reports what sounds like a very similar case. This teacher was also 24 years old, and was also fired immediately and arrested. The odd thing is that bond for this teacher was set at only $5,000, 1% of the bond in the first case. And the only difference I can see is that this second teacher is a woman rather than a man.


10:53 – We use autoburettes for filling bottles. Think one of those toppings dispensers in an icecream shop, but accurate to a tenth of a milliliter or less and with the parts that come into contact with solutions made from Teflon and glass. The things aren’t cheap, but they immensely speed up bottle filling.

So, a year or so ago I bought our first one, one with a range of 2.5 mL to 30 mL. Six months or so ago, it failed. The heavy glass cylinder cracked, and all the thing would do was suck air. So I contacted the vendor, who was willing to replace it in warranty but didn’t have a 2.5 mL to 30 mL unit in stock. It was going to be a week or so before he could get one to me. I told him that I didn’t ever want to be without one of these units, so while I waited on the replacement I had him ship me a 5 mL to 60 mL unit, as a second unit and spare.

Sunday, that second unit failed, leaving me with only the replacement 2.5 mL to 30 mL unit. The symptoms were the same. This time, I didn’t disassemble the unit because I didn’t want shards of broken glass all over the place as I’d had the first time. I also suggested that he might want to talk to the manufacturer about maybe replacing that heavy glass cylinder with a heavy Teflon cylinder or something. The vendor said he’d ship me another replacement unit under warranty, but as before he contacted the manufacturer to describe the problem. The manufacturer rep says he can’t figure out what’s going on. They’ve been selling these units worldwide for a long time, and the only two failures they’ve had of that glass tube have been on my two units. I’d told them that we weren’t abusing the units and that we’d treated them gently. The manufacturer rep thought that perhaps we’d been filling solutions that corrode glass, such as hydrofluoric acid. I told him that the only solution we filled that could potentially affect glass was 6 M sodium hydroxide, which will etch glass if it’s hot or left in contact for several hours. But I also told him that we filled sodium hydroxide solution cold, and that the unit was never in contact with it for more than the few minutes it took to fill a batch of bottles. So we’ll see what happens.


12:31 – Expect to see a lot more of this: Retired union workers facing ‘unprecedented’ pension cuts

Unions have been extorting businesses for the better part of a century, demanding unsustainably high wages and benefits. When something can’t go on, it stops. It’s now stopping, and the trend will continue getting worse with every passing year. Nor is it only 10% of pension funds that are in trouble. It’s 100% of pension funds, public and private. As I’ve said repeatedly for a long time, if you have a job, keep it. Don’t retire. You’ll regret giving up your job sooner rather than later. The younger generations are already starting to revolt against the very high costs that are and will increasingly be required to sustain us Baby Boomers. Many of these younger people have no jobs or only dead-end jobs themselves. There’s no way each of them can support a couple of us. We’re going to have to support ourselves.

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Monday, 11 November 2013

09:25 – I periodically get emails like this one:

can u give me a step by step giude to produce MDMA and what for equipment i do need? i got acces to the chemicals, but now idea how to handle it^^ thx

I confess that I’m always tempted to reply something like: “To begin, bring four liters of diethyl ether to a boil over a gas burner …” I would, too, except I’m afraid these morons would be stupid enough to do it in an apartment building full of innocent people. Given a reasonable set of precursors, MDMA is not a particularly difficult synthesis, if you know what you’re doing. But, even ignoring the legal and ethical issues, I suspect most of the chemists I know would hesitate to attempt it, at least on the scale that these morons are thinking about. Synthesizing 500 milligrams or 5 grams of something is one thing; scaling that up to 500 grams or 5 kilograms or 500 kilograms is a whole other ball of wax. There are professionals who have doctorates in these scaling-up processes. They’re called chemical engineers. And, as any competent chemist knows, a reaction that’s well-behaved every time in a 100 mL flask may go disastrously wrong if it’s scaled up by two or three orders of magnitude.


Barbara and I finished watching series 3 of Downton Abbey last night on Amazon Prime streaming. Nine episodes in HD without a glitch, which was a pleasant change from Netflix streaming. On Netflix, I don’t think we’ve been able to watch a full episode of anything in HD for at least a year. When we load an episode, the Roku box shows one to four balls as it buffers, with two balls being about VHS quality and four being about DVD quality. If HD is available and the bandwidth is available to support it, the “HD” icon displays next to the fourth ball. Most of the stuff we watch is supposed to be available in HD, and we sometimes start out with an HD feed. But almost invariably the feed stops while the Roku re-buffers and shifts down to three or two balls. Over the course of a typical evening, that might happen anything from once or twice to several times. It hasn’t yet happened with Amazon.


10:28 – 3D-printed fossils & rocks could transform geology

This is just one example of an application of a new technology that will eventually make a huge difference. Right now, Professor Hasiuk has to use a $170,000 3D printer in another department to get the resolution he needs, but before long that $170,000 printer will be a $17,000 printer, and not much longer after that it’ll be a $1,700 printer. I foresee a day when mass manufacturing will be done in factories full of huge, fast 3D printers. Factories will no longer be dedicated to one product or type of product. They’ll be able to run 24 hours a day, shifting each printer as necessary from one product to a completely different product, simply by loading a new template for each change and loading a bin of the necessary raw material. On a related note, I see that a company in Texas has produced a perfectly good steel Model 1911 .45 ACP pistol. I suspect with the raw materials and amortized equipment costs, that pistol probably cost them $10,000 or $100,000 to produce, but just wait a few years and people will be turning them out on home 3D printers.

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Friday, 8 November 2013

10:44 – As it turns out, Amazon Prime Video now provides a queue, which they call your watchlist. After I signed up for Prime, I started adding series that aren’t available on Netflix streaming to our watch list. I added series 3 of Downton Abbey and series 3 of Justified without any problem. Then I added Under the Dome. It showed up on our watchlist, but rather than having the Prime logo under the series icon, it had a note that it costs $2.99 per episode. I went back to the page for Under the Dome, which indeed showed that series as free with Prime. So I contacted Amazon tech support.

When I got to the page with contact information for Amazon tech support for Prime instant videos, there was no phone number. Instead there was a field to enter my phone number and there were two icons, one for “Call Me Now” and one for “Call Me in Five Minutes”. I clicked on the Call Me Now icon, and phone rang literally less than two seconds later. After about 6 minutes on hold (versus the 5 minute estimate) I was connected to a support person. I explained the weirdness about Under the Dome. She checked on her own system and said that she was seeing the same error that I was seeing and that she’d report it, but that I could indeed watch the series without being charged per episode. I verified with her that any time we attempted to watch video that was pay-per-view I’d have to enter my PIN number, so I didn’t have to worry about being charged unexpectedly.

So, I added Amazon Prime videos to my channel list on the Roku box and verified that my watch list showed up on the Roku. When Barbara got home from work, we decided to watch Downton Abbey. We watched the one-minute summary of series 3 and started the five-minute summary of series one and two. About two minutes into that, the screen went black. Not good. Then the Roku box rebooted spontaneously, something that had never happened before. I hope that was coincidental. We’ll try Amazon video again tonight.


14:27 – I just saw a report that yet another former NFL player, Tony Dorsett, has been diagnosed with chronic traumatic encephalopathy. The only reason Dorsett’s illness is notable for me is that I met him once or twice when I was a photographer for my high school newspaper and yearbook. He played football and basketball for Aliquippa/Hopewell, which New Castle High School frequently played against. Tony was a year behind me. Back then, his name was Dorsett with the emphasis on the first syllable. I seem to remember that he changed the emphasis to the second syllable when he was in college or early in his NFL career. I was very sorry to read of his problem. He was, as I recall, a nice guy and a hell of an athlete.

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Tuesday, 5 November 2013

10:00 – With less than five days of the month gone, we’re already at about 40% of kit revenues for November 2012. Of course, we could hit another dry spell any time, but otherwise it looks like this may end up being a pretty good month. We’re still in good shape on kit inventory for everything but the forensic science kits, so we’ll get started on another batch of those.

I almost ordered a couple of USB flash drives from Costco yesterday, which would have been a mistake. The drives had a “III” in their names, which I first assumed meant they were USB 3 drives. Fortunately, I checked the data transfer rates, which were only 4 MB/s for writes and 15 MB/s for reads. Geez. Costco didn’t have any reasonably fast drives, so I’ll just order something from Amazon. I have noticed that we’re now buying a very large percentage of the stuff we buy on-line from either Amazon or Costco.


17:27 – With five days of the month gone, we’re now at 96%+ of kit revenues for November 2012, thanks to a bulk order of chemistry kits from a public school distance-learning organization in Kansas. Of course, that also nearly wiped out our inventory of chemistry kits, so I’ll start tomorrow on getting another dozen or two of those assembled. Right after I get all those kits drop-shipped to the students in Kansas.

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