Friday, March 7, 2014

World views - things not to do after cataract surgery

As I write this, I am recuperating from cataract surgery in both my eyes. I'm doing well, thanks. It all happened very fast - mid December my eyesight degraded very rapidly, early January an opthalmologist told me I had cataracts in both eyes and he operated on me in the second half of February. I now have two bionic eyes and have swapped triple visual handicaps (not counting the cataracts) for just one: myopia plus astigmatism and presbyopia before, and just presbyopia - the need for reading glasses - after. My distance eyesight has never been this good, even with glasses. So assuming all keeps going well I am very happy.

After the surgery one has to recuperate and be a bit careful not to damage the freshly operated eye. Most eye doctors will advise you not to use hot tubs or saunas to avoid infection, not to touch your eyes, and to avoid strenuous exercise and contact sports for a while.

I searched the web a bit and found many surgeons telling their patients to avoid tennis but to go ahead playing golf. Which probably tells us a lot about the world they live in, as opposed to the average patient.

I live in rural France, and my cataract surgeon told me to avoid gardening (which involves a lot of bending over and lifting things) and sawing and chopping firewood. Hiking, driving, reading and watching tv were OK after a day or so.

Favorite tool of the rural French

Remarkably, on the site of an American eye clinic, I found the following advice: for three to four weeks, do not fire heavy rifles with a powerful recoil, but after a week you can resume firing pistols.

Different world views.

Toy of middle-aged American with bad eyesight


Thursday, December 1, 2011

Pepperspraying the future | Energy Bulletin

This makes an interesting read. 'Archdruid' John Michael Greer may sometimes be a bit too fascinated by his own perceived future role as a green wizard who will save his neighbours from famine, but he often has intelligent analyses of the economic and environmental challenges the world faces.
Pepperspraying the future | Energy Bulletin

Sunday, March 20, 2011

Robo atomjacks

Suppose that you are in charge of a nuclear power plant - say one that is built on the shores of an island nation that is subject to frequent earthquakes and the occasional flood. 
Some day the planet burps and your plant is shaken up a bit more than usual.  OK, emergency procedures kick in, the reactors scram as control rods stop the chain reaction.  You have no external power due to the earthquake, so you switch on the emergency diesel generators.  Pock pock pock.  All is well, there are some minor issues with damaged valves and piping but in general everything is under control.

Enter a huge tsunami that floods the entire plant, including the diesels, so they go belly-up.  Being a nuclear plant there are batteries to backup the backup generators, but after 8 hours these are empty, and in any case the coolant water inlets are full of flotsam.  Things are literally starting to heat up.

Which phone numbers would you have programmed in your phone?  The fire brigade?  Police?  The Ministry of Energy or whatever?  The army?

I suggest to put the following under 3 on your speed dial: +33 (0) 2 47 98 65 00 .

Groupe INTRA.  Which stands for 'Groupe d'INTervention Robotique sur Accidents nucleaire'.

These a group of boys and girls with a small army of specialized robots to enter the hellish environment of a leaking nuclear power plant to do things like take measurements, clear out debris, manipulate valves, keeping machinery going, possible also drag a water hose to a fuel storage pool that is about to boil dry.  The larger ones are full-sized bulldozers and diggers.  They are all hardened against intense radiation and can be controlled remotely from NBC-hardened command vehicles.

The group can be alerted within an hour and be on site within 24 hours with all their equipment and personnel everywhere in France - did I mention they are French?  They are also ready to intervene elsewhere if a power company has an intervention agreement with them.
Even if your company does not have such an agreement it never hurts to have their number.  You can simply find it on their public website:
http://www.groupe-intra.com/index2.htm (English).

INTRA exists since 1988, set up in the aftermath of Chernobyl by EDF, CEA, Cogema and Areva, to offer a better solution than sending humans into a high-radiation environment on what amounted to suicide missions.

If my information is correct, EDF offered the assistance of the INTRA group to the Japanese at a fairly early stage (they later stated that they could have been en route on 16 March) but they got no answer.

I am rather surprised that Japan, the country of toy robots and a highly robotized automobile industry, does not seem to have robotic (or rather, tele-operated) equipment that can intervene in nuclear power plants and, for that matter, in other NBC-risky situations.  Which brings me to the question: who does? 

Wednesday, March 9, 2011

Cutting edge

My day job is supposed to be in communications (not the wireless kind but the kind one writes advertising copy for). Advertising creatives work in the world's megapoles, and tend to be unseparable from their smartphones and other gadgets.  As I write this they are lining up to buy the new iPad 2.

I like gadgets; I love technology.  And I am very aware of the profound changes in our society wrung by the internet and social networking.  Without smartphones and Facebook, 2011 would probably not have become the year of the many revolutions.

Lately, due to pecuniary constraints, I had to make painful choices - mostly to not buy stuff.

But at some point I had to give in.  I found this fantastic multifunctional thingy, personally signed by its maker.  Hand crafted.  Ergonomic.  With a 20-year guarantee and an extensive user's manual.

An axe.  Man's most elementary tool.

Many thousands of years ago, someone made the first stone axe.  Which led to knives, spears, fishing hooks, sewing needles, clothes from cut and stitched hide instead of loosely draped furry skin, shoes; and after many millennia, nuclear power and Karl Lagerfeld.

My new axe is a Gränsfors Bruks, made in Sweden.  Its head is hand-forged high-carbon steel, tempered to incredible hardness and stamped with the initials of its forger: AS - Anders Strömstedt. Sharp as a razor.  The handle is unvarnished American hickory.
A forged steel head and a wooden handle.  That's all.

My Gränsfors Bruks 50-cm forestry axe. Photo of the actual thing, by me. 
Gränsfors Bruks axes are to serious wood choppers what Sabatier knives are to 3-star Michelin chefs.  After a bit of testing I can understand why.  My 50-cm forestry axe managed to shave off hairs from the back of my hand - my standard test for knives - after splitting a couple of small logs and chopping the end of one down to a sharp point. Anders knows how to forge an axe.
Anders the smith



Why does a copywriter buy an axe and not an iPad 2?

Because in spite of all the preachings of His Holyness Steve 1, there is no App in the Store that will chop wood. And we don't live in an apartment in a megapole but on a sizeable patch of land in the Auvergne, one of the greenest and most rural regions of France.  We have central heating, but we burn wood, which is abundant here, for cosy heat in the living room on dark and chilly days.  Our modern, high-efficiency wood burner is also our backup heat source in case of a power blackout.
Which means that I spend quite some time cutting and splitting logs into small pieces that fit in our stove. Once you have been learning that for a few years, you appreciate having the best tool for the job. 

Sorry, Steve, but the iPad is not it.

Monday, October 4, 2010

Get on with fusion !

It's about time the fusion people got on with it.  The scientific community has played with their toys long enough, doing 'elementary science' and building test reactors to get a 'better understanding' of the process.  Which has cost society billions of euros, dollars and other seashells that could have gone towards other useful things, like health care, education and energy-saving measures.

I'm not very concerned about that money.  I'd rather see that billions are used to build fusion test reactors than for waging war.  Fusion power research only costs a small fraction of waging war in various Pipelinistans.

What I am concerned about is the slow pace at which all this is happening.  If scientists are certain, as they have been saying for decades, that harnessing fusion power can be done, then the rest is engineering.  There is nothing to be better understood about fusion power, it is one of the universe's most elementary processes: throw hydrogen atoms against each other hard enough to overcome the repellant force of the protons in their cores, and they can fuse to make helium while generating humongous quantities of heat.  It happens in the Sun, as it does in every star.  it's what most of the universe as we know it runs on.

What is left is nuts and bolts.  Steel and other alloys.  Magnetic coils- superconducting coils perhaps.  Tubing.  Maybe powerful pulsed lasers if that is a better way to go.  Whatever.
Such things are typically done by plumbers on steroids.  Tell them you need a reactor vessel and they start drawing, then grab some steel plates and a welding torch.

Politicians have let themselves be taken for a ride long enough by the fusion scientists.  The ITER project is a case in point.  The top-notch international school and other comfortable perks for the scientists who will arrive in Cadarache to work there, were already built before the site for the reactor was even leveled. 
And what are they going to do?
Prove that they can sustain a fusion reaction for a few minutes at most, and generate a bit more energy than what has to go into sustaining the reaction.
After that they will start on building DEMO, a demonstration reactor that will function as a power plant, to show that fusion can actually be used to generate electricity.

But DEMO will never supply a single kilowatt-hour of power to the grid.  Oh no.  It will just sit somewhere, like ITER probably surrounded by the villas, schools and sports facilities of its scientific crew, for a decade or longer, proving (or not) that yes, the world could be saved from an energy crisis by fusion power.

Without actually doing so.

Meanwhile oil production is going into a decline that will never recover. Like any non-renewable resource, oil is running out, even if it will take decades before the last barrel is pumped. And burning up all that oil, or any other fossil fuel like coal or gas, is heating up the planet according to many self-declared climate experts, causing climate changes that many people will not like as they will get their feet wet or see their harvests fail (I have mixed sentiments about this - nobody is a real climate expert, as even the best scientists know next to nothing about what makes our planetary systems tick. But for the sake of argument, let's assume there is truth is those predictions). And no 'green', renewable resource like wind or solar will stand a chance in hell to replace petroleum. They are simply not reliable and energy-dense enough.
Now the world may continue to function without billions of oil-guzzling cars or jet planes, but it would be nice to have a reliable, dense and practically eternal energy source to produce electricity, so we can keep travelling by train, communicate, switch on the lights, watch tv, get on the internet to publish this kind of musings... Maybe even move around in little electric vehicles. Only a technology like fusion will offer that. Failing that we will burn every barrel and ton of fossil carbon we can extract, then burn down the forests and finally we will end like the people on Easter Island, with no resources at all, and most people will die.

If I were to be made dictator of one of the major countries involved in ITER (say France, where the thing is being built) I'd have all the scientists involved rounded up and tell them this:
“Ladies and gentlemen, you have been leading us on long enough.  You have been saying fusion power can be generated.  So here is the deal.  You build a fusion power plant that works, and that supplies at least 1000 megawatts to the national power grid of this country, and that plant must be operational and generating power  by 1 January 2020.  No more scientific toying around.  The world needs this.  We are on a war footing to save us from the energy crisis, global warming and peak oil.  There will be no more test reactors, no demonstration plants.  The only thing you will be allowed to work on is a fully operational and productive fusion power plant.
If that plant is not operational and supplying reliable power into the grid on New Year's Eve 2020, we will then conclude that fusion outside a star can not be made to work, and not a cent will be spent on it after that date.  The project will be closed for ever and you will be set to work on a biological farm milking goats and cutting hay - with a scythe.”

Thursday, August 20, 2009

Don't ignore the countryside

Everybody must live in a city. At least that is the impression you get when you see how fast public services are disappearing in rural areas here in France and elsewhere in Europe, and how politicians and activists talk about the, in their eyes, horrible inefficiency of living in a place where everything is far away and you always need a car to get around. The carbon footprint! Terrible!

At the same time, ecologists (the same ecologists who are against the use of personal mobility and want everybody to live in dense cities where you can go everywhere on foot or by bicycle) want us to grow our own food in our yards, keep chickens and generally get our food from nearby farms.

See the contradiction? If you live in a densely populated city, thus in an apartment as opposed to some horrible suburban sprawl, you can maybe grow a fistful of cherry tomatoes and some seasonings on your balcony, but you won’t ever be able to grow even a week’s worth of vegetables. Let alone keep chickens for eggs, or other animals. So you will need to buy all of it, more often than not prepackaged. Bad!
And if you live somewhere with enough space to provide most of your own food, compost your organic wastes and so fourth, you are automatically bad for the planet, because you must live in a detached house or farmstead, and you must be driving a car. And you need to drive a lot, as the post office, the bank, the grocery shop and the school are all many kilometres away from your home.

My perspective on this has become that of a neo-rural dweller. We live in a freestanding house in the French countryside, five kilometers from the nearest small town with essential services. The closest city of any importance is about 40 kilometers away, most of that over winding country roads.

But our area produces some of the best beef in the country. Some farmers grow classic grain varieties, mostly organic, that are milled into flour in a local mill, and bakers in our area and that same faraway city use it to bake one of the best breads in France, officially labeled as a local product.

Herds of sturdy Charolais cattle graze the modestly sized hilly pastures, protected against the wind by hedgerows of beech, birch and oak. Bulls are part of the family herds. Meaning they are happy: they are surrounded by their harem of cows and their offspring. Calves suck the milk directly from their mothers’ teats until they can graze themselves, and stay in the family group all their short lives, typically a year, sometimes two, until they are taken to the slaughterhouse in the city. The local butcher sells meat from animals he hand-picks in the fields.
Almost no ‘power fodder’ is added to the animals’ diet. Nor are they frequently injected with hormones or antibiotics. There is no need. Many cattle farmers grow some clover and maize to supplement the winter stock of hay for their animals, and do it in sensible rotation on fields that are humid enough to avoid artificial irrigation.

People here have vegetable gardens, sometimes greenhouses as well; they compost their wastes, many hold chickens, sometimes rabbits (to eat, not for fun), they fish in the nearby river or have fish ponds. Almost every house has a woodburning stove, some as their principal heat source, some as an addition to some form of central heating. There is so much forest here that even if everybody exclusively used wood as fuel, it would hardly make a dent; in fact the greatest worry here is to combat new-growth forest that tends to intrude on fields left unattended as older farmers retire.
The landscape, painstakingly maintained by pruning the hedgerows, is a paradise for birds of all sizes and colours, particularly predatory birds that have become rare elsewhere, such as red and black kites, buzzards, hawks and eagles. Europe’s largest owl species is endemic here, and beavers build dams in the same river where humans have installed a hydro-electric power plant. That river is highly appreciated by sport anglers and canoers - not anywhere near as many as you’ll find in mass tourist areas, as there are no souvenir shops and fast-food outlets along the river banks - there are virgin forests and steep rock cliffs and that is that.

Members of Birdwatch use a dedicated observation point on a nearby hilltop to count migratory birds. The Sioule river gorge plus part of the surrounding plateaus have been designated by the EU as a Natura 2000 protected habitat.

Beautiful, right? Great for holidays, great for biodiversity, great for the production of good, healthy, non-industrial meat, for organic vegetables, goat cheese and so fourth.
Urban dwellers happily eat the food brought in from areas like ours; they revel about the quality of the organic products in the farmers’ markets, and some like to come up here, strap on their hiking boots and enjoy nature.

But this kind of area can only exist because people live here, who work the land and so maintain this varied countryside, produce the meat, milk, vegetables et cetera. Farmers and ‘paysans’. Many of whom have another day (or night) job in a factory or a shop to make ends meet, as extensive non-industrial farming is not very profitable, and never has been.
Those farmers need to live on their lands, near their herds and crop fields. You can’t expect them to commute from cities. And it would be rather harsh to expect them to live in the rural countryside all by their lonesomes, without any neighbours other than a few colleagues and a handful of lumberjacks; without schools for their children; without a post office, a bank, some shops , a pub or two, a small supermarket, a doctor, a pharmacy, an auto repair shop and a gas station. Plus the specific services they need, like vets, a blacksmith to take care of horses’ hooves, a agricultural supply store. Places that are, in turn, run by people who also have families with basic needs.

This means that if our mostly urban society wants to eat good food and go play in the forests and rural countryside during the weekends and summer holidays, people (and thus politicians) must accept that the rural countryside needs populated villages, connected to the cities by effective public transport, and with a minimum level of public services like schools, post offices and medical care. And as long as those villages exist, city-dwelling ecologists should not begrudge a small number of individuals the right to live there, even if they are not farmers or have a farmer-supporting profession. Someone working from a rural home using the internet may still have a smaller carbon footprint than a suburban office worker who has to commute by car every day. And if rural areas are supposed to cater for urban tourists they also need people to run the tourist businesses, even if only part-time: small hotels, bed-and-breakfasts, camp sites, mountain guides, a kayak rental, horse and donkey handlers, even yoga teachers and balloon pilots. And the tourist offices need friendly hostesses. All these people should preferably live near or at their place of work, thus in the countryside.

Small cities and mid-sized towns (as opposed to megacities) are likely the most efficient places for people to live, as they offer a good balance between density of services and the human scale. But these towns must be surrounded by rural countryside to feed them, and that countryside needs to be populated, too.

Ignore that fact at your peril.

Wednesday, June 10, 2009

iPhone back to the future

Apple has a new iPhone. The 3GS. For 'Speed'. And it offers a software update for the older model 3G.
One of the new features is that you can connect it to a laptop and use it as a modem, so you don't need to try and read web pages or send e-mails using that tiny screen and your greasy fingers, but a full-size screen and a keyboard.
Yahoo.
Somewhere in a drawer I must have an old Ericsson GSM phone lying around, that could do the same thing. It dates from the late 1990s. More than a decade ago, which is a whole other geological era in computing terms.
Sure, it worked slower than the present 3G network (which did not exist at the time), but it used the then available network to let a connected computer communicate with the web. Many present-day phones of the kind you get practically for free with a standard phone subscription can still do that - at 3G speeds if you want them to. In fact since that early Ericsson brick I have had two Sagems and now again an Ericsson that all did exactly that.
So it took Apple over a decade to 'discover' that it might be a Good Idea to let a phone act as a modem, while everybody else was doing it as a matter of fact without bragging about it.
I'm glad I'm a PC.
Now I'm off to a webstore to get me some new free software for my non-Apple phone.