June 19, 2017

Dutch device collects water in the desert

Filed under: Design,Science,Sustainability by Orangemaster @ 11:43 pm

HW_1877-bew-300x200

Dutch company SunGlacier has built a device that collects water in hot and dry environments, such as here, in a desert in Mali where the company did some tests recently. SunGlacier’s Desert Twins harvester relies on condensation, as they explain, like the drops of water that appear on a soft drink can taken out of the fridge on a hot summer day. “The harvester comprises two separate devices – an energy unit, which draws and stores power from solar panels, and the water maker, which uses this energy to cool down a metal plate.”

Although the device was tested successfully in the Netherlands, the extreme environment of the Sahara Desert caused units to overheat and stop working, as well as water to evaporate within minutes of the harvester being opened. After a few days, they succeeded in cooling the ambient air inside the box so that condensation could take place and something other than steam was possible.

Find out more by watching the video

(Links: dezeen.com, sunglacier.nl)

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May 17, 2017

‘Dutch fertility doctor bragged about using his sperm’

Filed under: Health,Science by Orangemaster @ 10:52 am

In what sounds like a storyline straight out of an episode of Law & Order: Special Victims Unit, Moniek Wassenaar is confronting the widow of recently deceased fertility doctor Jan Karbaat who bragged about using his own sperm to inseminate his patients.

Together with 22 other donor children and parents Wassenaar is going to court to get answers and to try and find out if Dr Karbaat is their father or fathered their children. In the 1980 and 1990s, Karbaat’s Bijdorp clinic was the one of the biggest in the country, with an excellent reputation and attending to thousands of patients.

Some mothers say that Karbaat had told them to wait while he went to get ‘fresh sperm’ in the room next door, anonymous tips have come in over the years and there’s also children that look a lot like their alleged father walking around. Dr Karbaat even told Wassenaar over tea at his house once that he fathered 60 children, an encounter Mrs Karbaat claims not to remember.

The plaintiffs are trying to get Karbaat’s body exhumed to extract DNA and perform testing to get clarity. Karbaat’s window seems to be fighting this request, denying the entire situation. Mrs Karbaat’s defense lawyer is saying that the children have no right to know who their father is because they are the result of a sperm donation, which to me would mean anyone with criminal intent could get away with this sort of practice without ever being accountable and that can’t be legal. On the other hand, we told you in 2013 about local governments pressuring single mothers to reveal the name of the fathers of their children for alimony purposes, including fathers who were sperm donors, which sounds like a double standard on the face of it.

(Link: ad.nl)

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April 25, 2017

‘Bungee jumping compromises immune system’

Filed under: Science by Orangemaster @ 10:08 pm

Bungee

To conduct a study on the effects that a bungee jump might have, 20 volunteers who had never done bungee jumping before took the plunge at 60 m up at the Onze Lieve Vrouwe Gasthuis hospital in Amsterdam.

“The study site was located at the hospital grounds, where a crane was placed. Bungee jumps took place from an altitude of 60 m, under supervision and guidance from an experienced commercial bungee jump crew. On the morning of the study day, an intravenous access catheter was placed in the cubital vein [upper arm].“

Half of the volunteers had been previously treated with a three-day course of propranolol (a beta blocker), while the control group was not. Subsequent blood analyses showed that many of the volunteers who jumped showed obvious signs of stress before jumping, and so further studies might be needed to determine whether the immune system effects were caused by mental strain or by the physical stresses of the jump, or both.

(Link: improbable.com, Photo of Bungee by Mishimoto, some rights reserved)

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April 1, 2017

Which part of the Netherlands is furthest from any building?

Filed under: Nature,Science,Sustainability by Branko Collin @ 7:26 pm

map-uninhabited-places-nl-ptityeti“I know my country is a crowded one”, starts a question on question-and-answer website Stack Exchange.

But “where in The Netherlands am I furthest away from any city or town?”

Usually these sites have lots of opinions and very little in the way of meaningful answers, but one Ptityeti decided to go the extra mile and do the research. Luckily the two datasets they needed are both open and Creative Commons licensed. Openstreetmaps provides detailed maps of the country, and the government-created BAG database contains the exact position of every building in the country.

In turns out the recent nature reserve Oostvaardersplassen (reclaimed from IJsselmeer in 1986) is the winner, beating out the Drowned Land of Saeftinghe, the Lauwersmeer and Veluwe. If you went to Oostvaardersplassen, the furthest away you could be from any building is 2.5 kilometres (1.5 miles). What it basically boils down to though is that you have to hike into any of a number of former sea inlets, with Veluwe being the only place that can be considered proper land.

There were a few other conditions to the question. The place had to be on mainland Netherlands (we have a couple of uninhabited islands that would otherwise be clear winners) and couldn’t be a dike or dam, or Afsluitdijk might have won.

Ptityeti’s fascinating post details the sort of caveats one has to take into consideration if one wanted to answer a question like that. Even the question “how do I get as far away from people as I possibly can in the Netherlands?” is not answered by looking at datasets of building locations. After all, the answer to that would probably be “take the plane to Canada”. In the Netherlands, you do not get away from other people.

Illustration: Stack Exchange / Ptityeti.

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March 13, 2017

‘Dutch girls not interested in STEM subjects’

Filed under: General,Science by Orangemaster @ 10:00 pm

According to a survey carried out by Microsoft among 11,500 girls and women from 11 European countries including Russia, the Dutch are the most unsure of themselves when it comes to STEM subjects. Some 1,000 girls and women from the ages of 11 to 30 were interviewed at length for this survey.

More than 50% of the Dutch girls and women estimated their knowledge to be less than that of the other countries and 40% said their knowledge fell short of what it should be. Dutch girls were also quicker to claim their disinterest for STEM subjects, one year earlier than their European peers, apparently due to a lack of female role models since 60% of STEM-related teachers in the Netherlands are men. As well, some 31% of the girls talk to their mothers about STEM subjects and 33% to their fathers, while in the rest of Europe, 38% of the girls talk to their mothers and 37% talk to their fathers.

(Link: nieuws.nl, Photo of wilted tulip by Graham Keen, some rights reserved)

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February 25, 2017

3D landscape images using tandem satellites

Filed under: Aviation,Dutch first,Science by Orangemaster @ 12:11 pm

Radar-Favelle

Dutch company MetaSensing has developed a way of taking images using two satellites in tandem to view the Earth’s surface from slightly different angles. Rather than using radar satellites with single instruments, their novel way apparently offers a unique 3D view of the landscape. This airborne experiment using radar satellites orbiting in tandem was carried out for the first time above the flat landscpe of the Netherlands.

The process involved two aircraft flying in very close proximity to each carrying a radar instrument, something that will be replicated in Belgium next month. “While flying two aircraft sounds relatively straightforward, in practice it is a technical tour-de-force calling for well-trained pilots with strong nerves to fly with very little space between each plane”. Christian Barbier of the Centre Spatial de Liège in Belgium explained that by using this tandem method, they could map the movement of glaciers in 3D, improve crop mapping and even create 3D maps of the world’s forests.

(Link: phys.org, Photo of Radar by Pete Favelle, some rights reserved)

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November 18, 2016

Dutch company Mars One makes suits for Mars

Filed under: General,Science by Orangemaster @ 9:55 am

The Dutch are already involved in trying to get to Mars, whether it’s growing food for the trip, simply wanting to take that one-way trip or being the first at having a reality show on Mars.

Now Dutch company Mars One has unveiled its first try at a space suit to protect humans on the red planet. “Made from material similar to that used for NASA’s astronauts when exploring the Moon [like the one in the picture], the suit’s design also takes into account new challenges, such as the omnipresent red dust”. I still have strange red dust from a hike on Crete on one pair of shoes, so I can only imagine what their issues are. The suits are also to protect against killer radiation and needs to fit different people. Some 3D printers will ensure new parts can be made. WIl there be a 3D printer to repair the 3D printer, I don’t know.

Have a look at what Mars One has been planning to do:

(Link: phys.org)

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October 24, 2016

Dutch TV show clones dog to make a point

Filed under: Animals,Science by Orangemaster @ 9:47 pm

Dutch television station BNN, known for its edgier shows aimed at a younger segment of the population, is currently prepping a show that features cloned animals.

A bulldog in the Netherlands has been cloned, 12-year-old bulldog Joep from Rotterdam, by South Korean company Sooam Biotech. The cloning cost the broadcaster 50,000 euro, and a quick Internet scan tells us that an article on American site Refinery 29 mentioned 100,000 USD, which is about 91,000 euro, but the owner in question ended up with two clones of their dog. If you also include travel expenses in their case, it’s easily a lot more.

However, this was the first time ever a Dutch house pet was cloned. Cloning is prohibited in the Netherlands, but importing a cloned animal is perfectly legal. And the idea is to spark some debate. And what about abandoned dogs that need a good home and all that.

A lot of people were interested in cloning their dog for the show; I’m sure a lot of cat owners as well.

The owner of Joep the bulldog who has died, are apparently happy with their cloned dog that they got for free I imagine. “It’s not just the physical characteristics that are basically identical”, the couple said to De Telegraaf newspaper. “Daily we are amazed by the behaviour and character that are so similar to our old dog. That is unbelievable.”

(Link: nltimes)

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August 20, 2016

Lose friends fast by being an organic food snob

Filed under: Food & Drink,Health,Science by Orangemaster @ 9:55 am

The Dutch are not a food country: the motto here is food as fuel, like the hearty cheese sandwiches I’ve grown accustomed to over the years. However, like most humans, they love tasty food and as of late, are flexing their great trading skills by trying to combine junk foods and also trying to counter food waste.

I just read a letter sent in to newspaper Trouw in which a couple actually believe that ‘normal’ food is poisonous and expensive organic and bio-organic food is the dog’s bollocks. I’m thinking they did not grow up with organic and bio-organic food because it’s not been readily available for that long, and read something somewhere about it and now act as if they are in a higher social class. I’m picturing a white Dutch couple with some education, 30s, where the woman cuts off the man when he’s talking, especially since he’s the only one making sense, as you’ll see. And he’s going along with it because he can’t be arsed to find another partner at the moment and I bet eats dirty poisonous food when she’s away at her mother’s.

The couple wanted to know if it is OK to ask their friends to cook them organic food at dinner parties and wonder if it’s not too annoying for them to ask for ‘non-poisonous food’. The man thinks it’s inappropriate, while the woman has asked friends before and it has gone well, but still they get invited less. I hope they realise their friends fed them normal food and are going to avoid them like poison in the future until the guy splits up with his girlfriend and finds a new shiny one who eats everything under the sun.

The answer the couple got starts with: “it is quite arrogant to ask your friends to serve you expensive organic/bio-organic food. […] Your menu demands are very different than those of vegetarians or from people with a specific allergy because normal supermarket food is not poisonous.” It goes on to say there’s no scientific proof whatsoever that normal food is poisonous and called the couple ‘bonkers’ to conclude that their friends serve them ‘poisonous meals’, which is horribly arrogant and incorrect. The author would invite them over, serve them normal food and never invite them again, too, with a smile.

The man of the couple believes that being with friends is more important than the food they eat, but his partner isn’t getting the message. I think food and dinner party etiquette isn’t this couple’s biggest problem.

(Link: www.trouw.nl, Photo by FotoosVanRobin, some rights reserved)

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December 14, 2015

Killing mosquitoes using human foot odour traps

Filed under: Science,Weird by Orangemaster @ 11:37 am

In 2006 Dutch scientist Bart Knols observed that malaria-carrying mosquitoes are attracted to smelly human feet, convincing fellow scientist Renate Smallegange’s to follow in his smelly footsteps devising mosquito traps using human foot odour. Knols figured out that when standing up, mosquitoes would go for people’s feet, prompting Smallegange to zoom in on this discovery. At Wageningen University she collects people’s smelly socks to carry out research on trapping mosquitoes who transmit malaria through their bite, affecting millions of people every year.

According to this radio interview, carbon dioxide is what first attracts mosquitoes to people, however since 2006, we also know that smelly feet do that as well. She explains that clean socks are not attractive at all to mosquitoes, smelly socks are very attractive, but when you add carbon dioxide, you could trap roughly 45 to 75% of all malaria-carrying mosquitoes. And the sock only needs to be worn for a day!

No, foot odour doesn’t work on ‘regular’ mosquitoes, and yes, the idea is to design traps with a specific built-in odour, not some African villager’s dirty socks or shipping socks over to Africa.

(Link: www.improbable.com, Image by A.E. Goeldi, in the public domain)

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