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Messages - Sprool

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51
Physiology & Medicine / How good is a good cuppa tea?
« on: 17/02/2012 13:56:54 »
Interesting program on BBC the other night, focusing on nutrients in common foods, and dispelling a few common misconceptions. There was a section on tea, our national drink, stating if you left the teabag mashing in the cup for 3 minutes as opposed to the average 40 seconds, it would double the anmount of natural flavinoid antioxidants extracted from the leaves and it would be 'twice as good for you'. Whilst this is very comforting information no reference was given to the significance or actual flavinoid content needed to be beneficial to the metablism.
If it took 20,000ug of flavinoid to mop up those nasty free radicals and tea was giving you only 5ug then it makes pretty little difference how long you left the tea brewing.
Does anyone know what a good level of antioxidant intake is and how much you get in an average cuppa?

52
i get the point .........but what makes the silver actually high conductivity from same atomic structure.....
Same atomic structure as what..?

53
I have gone swimming in the Amazon with pyrhanas on a jungle trip about 15 years ago. We also fished for them and ate them for supper. Most pyranas are not carnivorous, they are bottim feeders living off  dead fruit dropped from the trees. The red belly pyraha is a carnivore and shoals of them can be whipped up into a feeding frenzy like sharks when they are hungry and smell blood in the water. This is the root of the scares.

54
Really not much info to go on, but high density would assume some high level of metals in there. Common metals might be most likely iron oxides, maybe manganse or copper oxides (but often that would give characteristic colour) so I would assume it's some sort of iron-rich stone. Whether it is igneous, sedimentay or metamorphic in origin is impossible to say with the sparse information given. How about a photo?

55
My two are devils at leaving their crusts - pizzas, sandwiches, toast, you name it. My parents always told me I had to eat the crusts as they were 'the best part'. I say they were the driest and most tasteless part.
Is there any extra or additional nutrition in bread crust or was this just a lame ploy at trying to cut down on  food wastage?

56
I knew this thread was going to go this way............. ;D

57
That CAN'T be true ! / Re: God real or not
« on: 09/02/2012 12:34:20 »
wooowww i made this topic years ago lmao i was like 14 amd now im 19 when this topic was started hahahah
so have your views changed over time? The ususal heated forum debates about religion go round in circles; people who are opinionated enough to bother contributing seldom change their stance during such debates, no matter how logical or illogical the facts

58
That CAN'T be true ! / Re: God real or not
« on: 06/02/2012 12:37:57 »
this does not form a very rational or satifying explanation to sceptics and non-believers.
I might as well say "since I have not experienced him I therefore know he does not exist."
Both arguments have equal validity.

59
does it state he used an electric hob?

60
Quote
do any animals other than humans commit suicide on such a regular basis?
That's cos they don't have opposable thumbs.

61
Whats with the huge flurry of Vitamin D posts? Have you just bought shares in Holland & Barrett?

62
Technology / Re: How does the laser on my mitre-saw work?
« on: 26/01/2012 12:22:24 »
it uses a small lens to focus the beam. The big industrial ones have sharks attached.

63
Complementary Medicine / Re: Magnetic Therapy
« on: 25/01/2012 23:12:41 »
There's the paradox. No disputing the Placebo effect is well documented and very powerful, but it relies on people believing it, not understanding it is a placebo. It's like the tooth fairy, as soon as you don't believe and see the lack of firm proper science behind it, you cease to get the coin under the pillow. Without the buy-in the effect loses its power. Where it goes astray morally is where companies prey on this to extract large sums of money from people. Yet if the sums are significant, and the treatments more intrusive,  the studies (reported in Ben's book) tend to show the placebo effect works even stronger as the buy-in is greater.
Sadly I think its a load of bunkum so it will never work for me.

64
Complementary Medicine / Re: Magnetic Therapy
« on: 25/01/2012 16:43:54 »
This from Ben Goldacre's Bad Science Blog:"Amusing to see that the NHS Prescription Pricing Authority have apparently put Magnet Bandages on the formulary:
www.timesonline.co.uk/article/0,,2087-2058902,00.html
(Even more amusing to see the Times mentioning that old “iron in blood is magnetic” chestnut again).
What’s interesting to me about this is that it may be the first time the PPA have put something on the NHS formulary on cost effectiveness grounds, but in the full knowledge that it very demonstrably, in well conducted trials, only works as a placebo, as the recent BMJ paper (amongst others) showed.
I ought to say I have no problem with placebos, I think they’re very effective, and it’s very much a contemporary cultural peculiarity that means medics don’t make use of the effect any more."

65
General Science / Re: mixing water activity
« on: 25/01/2012 16:04:12 »
"Fever is a defense that the body uses to kill viruses and other germs. We know that germs growing in cultures die if you turn up the temperature too much. The same is happening in your body when your brain turns up the temperature when you get sick. We also know that the white blood cells and other protective mechanisms in the body work more efficiently at higher temperatures. Getting a fever is an important part of your body's defense against infection."
Now what is the mechanism whereby the body temperature gets hotter? Do all the cells start burning more energy together in the Mitochondria?

66
excessive anything is not good for you. No mention of the body's natural balancing act of generating more melanin on uv exposure, the skins own natural UV-absorber. Getting sunburnt is not good for you. This is not exactly a scientific revelation.
If this is the latest health scare fad that pseudo-science journalists are trying to milk for good copy then it must be a very slow news day.

67
Complementary Medicine / Re: Magnetic Therapy
« on: 24/01/2012 16:09:10 »
So, a lot of conflicting information here. Some say North pole, some say South, some say positive some say negative.
One says it either works for you or it doesn't.
I can see strong AC current electromagnetism is used for wound healing and stimulating the body's own repair systems for bone fractures, by some mainstream medical practicioners (after all, it can't do any harm can it?) but can you really liken a static wristband magnet to a strong AC field? There's a lot of pseudoscience going on which is clouding a sensible, reasoned debate here, and there's a lot of placebo power going on which I suspect is the over-riding contributory factor.

68
You have a point ;)

69
i think you outgeeked them, they just mention black tourmaline  ;D

70
Thanks for the link RD
Power Balance is a brand of hologram bracelet once claimed by its manufacturers and vendors to "use holographic technology" to "resonate with and respond to the natural energy field of the body", and increase sporting ability.[1] Numerous independent studies of the device found it to be completely ineffective at improving athletic performance, and the manufacturer was forced to retract its claims in 2010.

In December 2010, the Australian Competition and Consumer Commission (ACCC) required Power Balance to do several things, including making the following statement admitting they "engaged in misleading conduct":

"In our advertising we stated that Power Balance wristbands improved your strength, balance and flexibility. We admit that there is no credible scientific evidence that supports our claims and therefore we engaged in misleading conduct in breach of s52 of the Trade Practices Act 1974. If you feel you have been misled by our promotions, we wish to unreservedly apologize and offer a full refund."
In January 2011, a suit was filed against the company for fraud, false advertising, unfair competition and unjust enrichment.

71
Quote
Nobody said you could
The O/P asked if you could.
http://www.instructables.com/id/How-to-Start-Fire-with-Water/
You mean - how to start fire with ammonium nitrate, salt and zinc powder and a drop of water?
(not shampoo...)
You might as well say  you can blow up a bridge with a bag of TNT that may have a shampoo bottle on one of the pockets. The presence of shampoo is largely irrelevant, it would just happen to have some water in it. Thus in the above link it's the action of the water not the surfactant that kicks off the reaction.

72
"The electric current that courses through tourmaline is actually a flow of electrons originating in the sun. The sun bathes the earth in a continuous stream of negatively charged electrons, which enter the positively charged side of the tourmaline material and exit from the oppositely charged side. With this current flowing through it at all times, tourmaline is like a battery with unlimited life, one that never runs out!"
Wow, a never-ending source of energy! Why has no-one hooked them up before to power milk floats?

73
Came across these tourmaline 'ionic balance' wriststraps on Facebook.
http://www.ionic-balance.com/technology/tourmaline.html
Can they really make these wild claims? Theres a lot of shocking bad science here. People are paying £23 for a rubber wristband with a bit of mineral in it. Power of placebo? Is there actually any real scientific study backing up this snake-oil sales pitch?

74
^^ +1 for control buttons on the steering wheel.
On the same lines though I have  Sony DAB alarm clock radio and its a real pain going through the lengthy menu systems to change alarm time or retune radio, much rather just have an old turny knob or two. Must be getting old, but the new tech buttons do not add any extra value to the operation of the device, and detract from the experience of using it. To me this is a design fail.

75
my daughter's just been set the same homework but she knows how to use google ;/

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