2010-12-24, 18:12 | Link #101 |
blinded by blood
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We see intelligent life (humans), and it's the only intelligent life we see. But we don't say humans are the only intelligent beings in the universe. We just say they're the only intelligent life we know of, but don't discount the existence of other intelligent beings.
We see organic life (carbon-based, requires water), and it's the only life we see. But apparently, we do say it's the only life in the universe. We don't seem to say that it's the only life we know of (going by what you are saying), and discount the possibility of life that doesn't use carbon or water.
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2010-12-24, 18:55 | Link #102 | |
Junior Member
Join Date: Dec 2005
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We may not say we're the only intelligent life in the universe, but we do have criteria of what makes one an intelligent life. Similarly, we may not say we're the only living beings, but we do have criteria of what makes one a living being. But my point is that those criteria may be subject to change given additional evidence. |
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2010-12-26, 03:06 | Link #105 | |||
NYAAAAHAAANNNNN~
Join Date: Nov 2007
Age: 35
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Otherwise, how do we construct hypotheses?
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2010-12-26, 03:59 | Link #106 |
Takao Tsundere Cruiser
Join Date: Oct 2008
Location: Classified
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Diet coke doesn't really help you diet, it just makes things worst as it causes a spike in insulin levels, which causes more calories to be stored in the cells, including fat cells. Because insulin eats blood sugar, this also causes temporary hypoglycemia, which will lead to a craving for sugary food to restore the balance. Hence, the overall effect of diet soda is a tendency toward weight gain, not loss. Also diet coke only works in diabetic diets.
So if your out at a fastfood joint, skip the diet coke and order a regular cola. Unless your diabetic.
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2010-12-26, 05:07 | Link #107 |
Senior Member
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about BBQ...
Russians are so wicked and hardcore that they barbeque right outside their 20 storie apartment building on a 4x6 piece of land that has grass. thats usually between the sidewalk and the building. i've seen it. its weird even by russian standards...
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2010-12-26, 05:29 | Link #108 | |
The Voice of Reason
Join Date: Feb 2010
Location: The Netherlands
Age: 47
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2010-12-26, 09:43 | Link #111 |
Komrades of Kitamura Kou
Join Date: Jul 2004
Age: 39
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So ok anyway.
Majority of insulin regulation is reactive to the relative levels of glucose in the blood, up regulated with an increase of blood glucose and down regulated with decrease in blood glucose, dependent on the amount of glucose relatively detected by beta cells on the Islets of Langerhans in the Pancreas. The problem with sweeteners is that (according to research) they also induce the secretion on insulin by binding to the same cell membrane receptor (supposedly) as glucose, however without the caloric compensation of sugar since they don't provide substrate for cellular metabolism. What you end up with is a relative hypoglycemic state since your fats, muscles and liver take in your glucose without having remaining glucose to normalize blood levels. Because of this, not only do you increase fatty acid production, you also get hungry because you have to compensate the sugars lost from your blood. So yes, you get a fat ass with a fatty liver while feeling tired and hungry at the same time. Sweeteners ironically become appetite enhancers because you aren't satiated, which sort of fuels the vicious cycle of eating more and more.
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2010-12-26, 11:02 | Link #112 |
Moving in circles
Join Date: Apr 2006
Location: Singapore
Age: 49
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Drop a tarnished coin into a glass of Coke, and leave it to stand overnight. You'll find the coin bright, shiny and new the next morning!
I made that up. But I'm sure it made you want to try and see if it works, no? |
2010-12-26, 11:19 | Link #113 | |
廉頗
Join Date: Feb 2004
Location: Massachusetts
Age: 34
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2010-12-26, 13:18 | Link #115 | |
NYAAAAHAAANNNNN~
Join Date: Nov 2007
Age: 35
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Nickel and aluminium plated coins form a layer of oxide outside of them when tarnished, and the surface is VERY inert to chemical reactions. You have to use a properly concentrated (usually undiluted) and strong reducing agent, usually something containing iron or hydride ions. As for the video, the coin is copper plated if I am not wrong. Copper-oxide bonds are nowhere as strong as copper forms a 2+ bond with oxygen 2- ions to have a stabilised metal oxide surface. The acid reduces the copper oxide back to copper and oxide again easily due to the electronegativity of hydrogen ions being higher than that of copper, resulting in the oxygen being donated to the hydrogen by the copper oxide in the chemical reaction. I seriously doubt it would work on gray coins which are usually plated with nickel or aluminium. P.S This question is actually from an A Level Chemistry Practical paper before 2008. My teachers accepted organic acids as answers, but it makes the later part of the question more tedious because there are so many f***ing bonds to calculate the energy released, total electronegativity, concentration and no. of mole required. Theoretically, carbonic acid (present in coke when CO2 bonds with water through the carbonating process) is only strong enough to be highly reactive at pressurised conditions. If coke that do that, we did immediately inflate ourselves as balloons as soon as we drink a can of coke.
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Last edited by SaintessHeart; 2010-12-26 at 13:28. |
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2010-12-26, 13:58 | Link #116 |
Junior Member
Join Date: Dec 2005
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Well, like you said, there must be justifiable reasons to change a definition. But if a definition do change, then the hypotheses one construct would simply have to reflect the new definition, if applicable. It's not like we change definitions often enough so as to make that impossible.
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2010-12-26, 14:40 | Link #117 | |
Moving in circles
Join Date: Apr 2006
Location: Singapore
Age: 49
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The Japanese islands are born from an incestuous union between a brother and a sister. And we wonder why siscon is so popular in anime... |
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2010-12-26, 15:07 | Link #119 | |
Okuyasu the Bird
Join Date: Sep 2009
Location: Alberta, Canada
Age: 32
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Don't think that would work in a fact topic. Especially with all the scientific talk flying around in here.
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Last edited by SilverSyko; 2010-12-26 at 15:25. |
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2010-12-26, 15:27 | Link #120 | |
NYAAAAHAAANNNNN~
Join Date: Nov 2007
Age: 35
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And I say it is a "hardcore" reason, not simply "justifiable" (where a new theory can be announced so the old one fades into obscurity, not reconstruct it to suit practices). So far I have only seen it being applied once in Chemistry, where the proton donor-acceptor relationship was reduced to a model for redox and half-equations, but not totally removed from the teaching of Chemistry in any school at all. Bringing political techniques of argument (ad hominem, etc) into science doesn't work if you don't have any bases to set as a technical example. The fundamentals of science and math are based on discovery, not established norms of practices. So you might want to reconstruct that "justifiable reasons" part to include something more than a one-liner which you think you can use back on the other person.
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