1

Geology, Palaeontology & Archaeology / Re: What are the chemical properties of clay, cement and glass?

« on: 28/06/2008 09:22:14 »

Thanks for the reply JimBob

I only need to know the SIMPLE property(s) of clay

for e.g the property for lead is that it is heavy

or have i got the totally wrong idea of what property means..?

Thanks

2

Geology, Palaeontology & Archaeology / What are the chemical properties of clay, cement and glass?

« on: 27/06/2008 20:28:55 »

Hey,
Can someone please tell me the properties of Clay, Cement and Glass? Ive been looking all over but cant get a straight forward anwswer.

Thanks

3

Physiology & Medicine / Are the dates of menstruation hereditary?

« on: 23/06/2008 20:13:47 »

Just wondering..

are the dates of menstruation hereditary?

thanks

4

Physiology & Medicine / What are the risks of increasing blood volume to boost athletic performance?

« on: 13/06/2008 23:12:03 »

Thanks

5

Physiology & Medicine / Is a mixture of alcohol and marijuana potentially fatal?

« on: 13/06/2008 19:12:33 »

I've read tis can be fatal? True or False?
Anybody ever tried it?
Pros and Cons?

Thanks

6

Physiology & Medicine / What are the risks of increasing blood volume to boost athletic performance?

« on: 12/06/2008 16:52:34 »

Examples of performance-enhancing drugs include steroids such as cortisone, as well as natural substances such as the athlete's own blood. Using their own blood to enhance their performance, athletes perform what is known as "blood packing", that is, taking around 2 pints of blood from the body 2 weeks prior to the meet, or match that they are training for, and keeping it stored. The night before the big match, they re-inject the blood back into their bloodstream, thereby having 50% more red blood cells, and enabling them to perform better. This method of performance enhancement is almost impossible to detect, unless it is actually witnessed. After the athlete is done with his or her sport for the day, the two pints are taken out once again and disposed of.

http://en.wikipedia.org/wiki/Performance-enhancing_drugs

Whoever comes up with these methods is a genious.

Surely this cant be safe? Is it?
Wouldnt the blood vessels burst due to the sheer amount of blood?
Would it be safe for a teen to enact this?

Thanks


[MOD - please can you use subject headings that are phrased as questions in order to be consistent with the style of the forum. Thanks, CS]

7

Physiology & Medicine / After taking illegal subtances, Is it possible i dont return to my normal state?

« on: 28/05/2008 13:34:33 »

When i said 'not returning to a normal state' i didnt mean addiction  []

I meant..feeling the effects for months afterwards, not returning to 'soberness'

thanks

8

Physiology & Medicine / What is the medical term for removal of the skull?

« on: 27/05/2008 21:12:32 »

Decapitated?

9

Physiology & Medicine / After taking illegal subtances, Is it possible i dont return to my normal state?

« on: 27/05/2008 18:53:18 »

There is an association between cannabis use and schizophrenia ...

Do you mean the user will only suffer schizophrenia after taking cannabis?

Or all the time?

Thanks

10

Physiology & Medicine / After taking illegal subtances, Is it possible i dont return to my normal state?

« on: 27/05/2008 17:24:15 »

I heard that after taking drugs (illegal ones, cannabis, heroin, cocaine etc) there is a possibility that i dont return to my normal state..

1) Is this true?
2) Does it apply for ALL illegal drugs?
3) Is it permenant?
4) If it is a permenant thing, are there any medications or antibiotics that can bring the person back to a normal state?

Im not a drug user..it was just eating away at my mind..i didnt think something like that could be true..saying as cannabis is legal in holland.

Thanks

11

Cells, Microbes & Viruses / Re: How may HIV be transmitted?

« on: 18/05/2008 23:36:59 »

Yup it helped alot.
Took alot off my mind!

thanks smartbutdumb

12

Cells, Microbes & Viruses / Re: How may HIV be transmitted?

« on: 15/05/2008 22:57:39 »

Thanks []

13

Cells, Microbes & Viruses / MEDICAL / BACTERIAL / VIRAL / FUNGAL GALLERY

« on: 11/05/2008 13:05:53 »

Bacterium


http://www.scienceclarified.com/images/uesc_02_img0068.jpg

14

Physiology & Medicine / Would drinking your own urine protect you from dehydration?

« on: 11/05/2008 11:41:42 »

Dont all body fluids have salt in them?

My guess is no..because the salt would make you more thirsty. Although ive read some stuff about urine having good causes e.g helping to heal wounds and such.

Im not 100% sure though

15

Cells, Microbes & Viruses / Can mosquitoes spread HIV / AIDS?

« on: 11/05/2008 11:32:27 »

HIV is not transmitted by mosquitoes, flies, ticks, fleas, bees or wasps. If a bloodsucking insect bites someone with HIV, the virus dies almost instantly in the insect's stomach (as it digests the blood). HIV can only live in human cells.

Mosquitoes cannot transmit HIV for two reasons:

The mosquito draws blood and injects saliva. The blood from one person is not injected into the mosquito's next victim.
HIV dies in the mosquito's body. People sometimes are confused because malaria actually reproduces inside the mosquito's digestive tract, using the insect as part of its life cycle. HIV does not.
These facts are confirmed by looking at infection patterns. In areas where mosquitoes are common and where HIV is prevalent, the distribution of AIDS cases in the population is not different from other areas. If mosquitoes transmitted HIV, they would be seeing a disproportionate number of children and elderly infected in those areas.

http://www.sfaf.org/aids101/transmission.html#insects

16

Cells, Microbes & Viruses / How may HIV be transmitted?

« on: 11/05/2008 11:28:23 »

Hey..A few questions.

1)Can HIV/AIDS be passed from Saliva>Blood?
2)How long is it until i can see effects of it?
3)Can an STI be passed from Saliva>Blood?
4)If i get tested for either,
How long will it take?
What will happen?
Do i have to inform my Parent/Guardian? (I live in UK)

Thanks alot

17

Technology / How are moulds made for metal casting, such as making a ring?

« on: 10/05/2008 18:49:22 »

Would any clay be sufficent to be fired? or does it have to be a certain kind?

Thanks

18

Technology / Re: How are moulds made for metal casting, such as making a ring?

« on: 10/05/2008 09:42:36 »

Thanks.

What about Solder? I was talking to a friend that is in the plumbing profession, and he said i could melt solder with a lighter or candle (I dont have propane or an oxy whatever  [])

Another question is. What can i use to make the mould. I was thinking i could melt wax..and then make a mould out of that? But i guessed it would just burn straight through, would play dough work?

Cheers

19

Technology / How are moulds made for metal casting, such as making a ring?

« on: 09/05/2008 18:41:00 »

Hey Guys,
I was wondering..could i make my own ring? Im not talking sophicated equipment. Just basic stuff like a Clay mould (Clay from the Pound shop. Or if your American, the Dollar shop) And then melt an iron bar into the mould and let it set?

A few questions..
1) Would my clay mould be able to withstand the heat of the molten iron or would it snap?
2) What temerature does iron start to melt..Cause i was thinking i could use a lighter..but i doubt that would work..I dont have a furnace or a gas cooker, so would i be able to make a makeshift furnace out of brick and use that?

Thanks

20

Physiology & Medicine / Leg Amputation and regrowth

« on: 08/04/2008 21:56:32 »

ohhh i see. Thanks