Group: sci.med

Medicine and its related products and regulations.

Add group to favorites Add group to favorites
   indietro Back to post list     indietro Send new message to group
Search:

Post Subject:

Astronautical Oxidation

Reply from: ironjustice
Date: 29 Apr 2008, 16:32
Astronautical Oxidation

Astronauts face space age risk
Astronauts who spend too long in space may age prematurely and become
more prone to cancer, new research suggests.
Radiation in space can cause damage to living tissue
The findings from scientists in the US could have major implications
for plans to build moon bases and send explorers to Mars.

The risks come from exposure to "space radiation" according to the
researchers, who were funded by the American space agency Nasa.

They found evidence that the high energy particles which float through
space can have a harmful effect on mice.

Cancer risk

In a new report, the scientists claim that the particles can damage
DNA.

They found that the biggest effect was on the gut, and that is likely
to lead to an increased risk of colon cancer.

The mice who were exposed to radiation also aged prematurely, with
their fur turning grey.

Radiation exposure, either intentional or accidental, is inevitable
during our lifetimes

Dr Kamal Datta, who led the study at Georgetown's Lombardi
Comprehensive Cancer Centre, said: "Radiation exposure, either
intentional or accidental, is inevitable during our lifetimes. But
with plans for a mission to Mars, we need to understand more about the
nature of radiation in space."

The kind of radiation found in space is known as high LET (linear
energy transfer) radiation. It can cause concentrated damage to living
tissue.

People on Earth are shielded from it by the planet's atmosphere, but
in space there is nothing to stop astronauts being blasted by the
particles.


Who loves ya.
Tom


Jesus Was A Vegetarian!
* tinyurl . com /2r2nkh


Man Is A Herbivore!
* tinyurl . com /a3cc3


DEAD PEOPLE WALKING
* tinyurl . com /zk9fk



Reply from: trigonometry1972@gmail . com |
Date: 30 Apr 2008, 22:01
Re: Astronautical Oxidation



ironjustice wrote:
> Astronauts face space age risk
> Astronauts who spend too long in space may age prematurely and become
> more prone to cancer, new research suggests.
> Radiation in space can cause damage to living tissue
> The findings from scientists in the US could have major implications
> for plans to build moon bases and send explorers to Mars.
>
> The risks come from exposure to "space radiation" according to the
> researchers, who were funded by the American space agency Nasa.
>
> They found evidence that the high energy particles which float through
> space can have a harmful effect on mice.
>
> Cancer risk
>
> In a new report, the scientists claim that the particles can damage
> DNA.
>
> They found that the biggest effect was on the gut, and that is likely
> to lead to an increased risk of colon cancer.
>
> The mice who were exposed to radiation also aged prematurely, with
> their fur turning grey.
>
> Radiation exposure, either intentional or accidental, is inevitable
> during our lifetimes
>
> Dr Kamal Datta, who led the study at Georgetown's Lombardi
> Comprehensive Cancer Centre, said: "Radiation exposure, either
> intentional or accidental, is inevitable during our lifetimes. But
> with plans for a mission to Mars, we need to understand more about the
> nature of radiation in space."
>
> The kind of radiation found in space is known as high LET (linear
> energy transfer) radiation. It can cause concentrated damage to living
> tissue.
>
> People on Earth are shielded from it by the planet's atmosphere, but
> in space there is nothing to stop astronauts being blasted by the
> particles.
>
>
> Who loves ya.
> Tom
>
>
> Jesus Was A Vegetarian!
> * tinyurl . com /2r2nkh
>
>
> Man Is A Herbivore!
> * tinyurl . com /a3cc3
>
>
> DEAD PEOPLE WALKING
> * tinyurl . com /zk9fk

This should be nothing new. It has long been known
that space is a hostile environment. In space in
the current generation of low mass aluminium can used
as spacecraft, astronauts get high exposures to
both high LET and low LET radiation. All of this
would serve a mimetic of the aging process.
This has been known for at least 5 decades.

Space travel beyond the moon will require
sheilding both passive mass shielding and
electromagnetic shielding. Either that or
perhaps society should send former national leaders
and representives in the vessels with no shielding.

Reply from: ironjustice
Date: 01 May 2008, 00:41
Re: Astronautical Oxidation

On Apr 30, 1:01 pm, "trigonometry1...@gmail . com |"
<trigonometry1...@gmail . com > wrote: Space travel beyond the moon will
require
sheilding both passive mass shielding and
electromagnetic shielding. <<

Or turn the pressure up in the cabin.


Who loves ya.
Tom


Jesus Was A Vegetarian!
* tinyurl . com /2r2nkh


Man Is A Herbivore!
* tinyurl . com /a3cc3


DEAD PEOPLE WALKING
* tinyurl . com /zk9fk




> ironjustice wrote:
> > Astronauts face space age risk
> > Astronauts who spend too long in space may age prematurely and become
> > more prone to cancer, new research suggests.
> > Radiation in space can cause damage to living tissue
> > The findings from scientists in the US could have major implications
> > for plans to build moon bases and send explorers to Mars.
>
> > The risks come from exposure to "space radiation" according to the
> > researchers, who were funded by the American space agency Nasa.
>
> > They found evidence that the high energy particles which float through
> > space can have a harmful effect on mice.
>
> > Cancer risk
>
> > In a new report, the scientists claim that the particles can damage
> > DNA.
>
> > They found that the biggest effect was on the gut, and that is likely
> > to lead to an increased risk of colon cancer.
>
> > The mice who were exposed to radiation also aged prematurely, with
> > their fur turning grey.
>
> >   Radiation exposure, either intentional or accidental, is inevitable
> > during our lifetimes
>
> > Dr Kamal Datta, who led the study at Georgetown's Lombardi
> > Comprehensive Cancer Centre, said: "Radiation exposure, either
> > intentional or accidental, is inevitable during our lifetimes. But
> > with plans for a mission to Mars, we need to understand more about the
> > nature of radiation in space."
>
> > The kind of radiation found in space is known as high LET (linear
> > energy transfer) radiation. It can cause concentrated damage to living
> > tissue.
>
> > People on Earth are shielded from it by the planet's atmosphere, but
> > in space there is nothing to stop astronauts being blasted by the
> > particles.
>
> > Who loves ya.
> > Tom
>
> > Jesus Was A Vegetarian!
> > * tinyurl . com /2r2nkh
>
> > Man Is A Herbivore!
> > * tinyurl . com /a3cc3
>
> > DEAD PEOPLE WALKING
> > * tinyurl . com /zk9fk
>
> This should be nothing new. It has long been known
> that space is a hostile environment. In space in
> the current generation of low mass aluminium can used
> as spacecraft, astronauts get high exposures to
> both high LET and low LET radiation. All of this
> would serve a mimetic of the aging process.
> This has been known for at least 5 decades.
>
> Space travel beyond the moon will require
> sheilding both passive mass shielding and
> electromagnetic shielding. Either that or
> perhaps society should send former national leaders
> and representives in the vessels with no shielding.- Hide quoted text -
>
> - Show quoted text -


Reply from: Rufus
Date: 02 May 2008, 07:51
Re: Astronautical Oxidation

Turning up the pressure has nothing to do with stopping the radiation...

...not to mention the bone de-calcification that occurs from just being
in zero-G for extended periods.

--
- Rufus

(whom was once recruited as an astronaut when he was younger and well,
and decided that it was a job he just plain didn't want.)

ironjustice wrote:
> On Apr 30, 1:01 pm, "trigonometry1...@gmail . com |"
> <trigonometry1...@gmail . com > wrote: Space travel beyond the moon will
> require
> sheilding both passive mass shielding and
> electromagnetic shielding. <<
>
> Or turn the pressure up in the cabin.
>
>
> Who loves ya.
> Tom
>
>
> Jesus Was A Vegetarian!
> * tinyurl . com /2r2nkh
>
>
> Man Is A Herbivore!
> * tinyurl . com /a3cc3
>
>
> DEAD PEOPLE WALKING
> * tinyurl . com /zk9fk
>
>
>
>
>> ironjustice wrote:
>>> Astronauts face space age risk
>>> Astronauts who spend too long in space may age prematurely and become
>>> more prone to cancer, new research suggests.
>>> Radiation in space can cause damage to living tissue
>>> The findings from scientists in the US could have major implications
>>> for plans to build moon bases and send explorers to Mars.
>>> The risks come from exposure to "space radiation" according to the
>>> researchers, who were funded by the American space agency Nasa.
>>> They found evidence that the high energy particles which float through
>>> space can have a harmful effect on mice.
>>> Cancer risk
>>> In a new report, the scientists claim that the particles can damage
>>> DNA.
>>> They found that the biggest effect was on the gut, and that is likely
>>> to lead to an increased risk of colon cancer.
>>> The mice who were exposed to radiation also aged prematurely, with
>>> their fur turning grey.
>>> Radiation exposure, either intentional or accidental, is inevitable
>>> during our lifetimes
>>> Dr Kamal Datta, who led the study at Georgetown's Lombardi
>>> Comprehensive Cancer Centre, said: "Radiation exposure, either
>>> intentional or accidental, is inevitable during our lifetimes. But
>>> with plans for a mission to Mars, we need to understand more about the
>>> nature of radiation in space."
>>> The kind of radiation found in space is known as high LET (linear
>>> energy transfer) radiation. It can cause concentrated damage to living
>>> tissue.
>>> People on Earth are shielded from it by the planet's atmosphere, but
>>> in space there is nothing to stop astronauts being blasted by the
>>> particles.
>>> Who loves ya.
>>> Tom
>>> Jesus Was A Vegetarian!
>>> * tinyurl . com /2r2nkh
>>> Man Is A Herbivore!
>>> * tinyurl . com /a3cc3
>>> DEAD PEOPLE WALKING
>>> * tinyurl . com /zk9fk
>> This should be nothing new. It has long been known
>> that space is a hostile environment. In space in
>> the current generation of low mass aluminium can used
>> as spacecraft, astronauts get high exposures to
>> both high LET and low LET radiation. All of this
>> would serve a mimetic of the aging process.
>> This has been known for at least 5 decades.
>>
>> Space travel beyond the moon will require
>> sheilding both passive mass shielding and
>> electromagnetic shielding. Either that or
>> perhaps society should send former national leaders
>> and representives in the vessels with no shielding.- Hide quoted text -
>>
>> - Show quoted text -
>

Reply from: Taka
Date: 03 May 2008, 16:38
Re: Astronautical Oxidation

On May 2, 2:51 pm, Rufus <n...@home . com > wrote:
> Turning up the pressure has nothing to do with stopping the radiation...

He wants to say that by turning up the pressure in the cabin you
reduce the red blood cell count and therefore iron content in the
blood. With less iron there is less oxidation of biological membranes
which are primary target of radiation. You can also put the people on
a coconut/SFA-only diet 2 years prior to the mission and achieve
similar effect since the Omega-6 and 3 are much more susceptible to
radiation-induced oxidation than the Omega-9 Mead acid which replaces
them when you limit your "EFA" intake. But a better solution would be
to remove some bone marrow (stem cells) from the cosmonauts (even
better when they are young) and keep it safe here on the Earth till
they return and then put it back into them.

Taka

Reply from: ironjustice
Date: 03 May 2008, 17:33
Re: Astronautical Oxidation

On May 3, 7:38 am, Taka <taka0...@gmail . com > wrote:He wants to say
that by turning up the pressure in the cabin you reduce the red blood
cell count and therefore iron content in the blood. <<

This proved to be a futile theory though with a little checking they
keep the pressure in the shuttle calibrated at sea level even better
than commercial airlines.

So we are back to the vitamin E / antioxidant depletion by .. ? ..
oxidation .. ?
Vitamin E was / is ? being used to prevent the anemia which happens in
space.

It would be something other than the pressure which is causing the
increased oxidation in the astronaut and give more credence to the
increased rays.


Who loves ya.
Tom


Jesus Was A Vegetarian!
* tinyurl . com /2r2nkh


Man Is A Herbivore!
* tinyurl . com /a3cc3


DEAD PEOPLE WALKING
* tinyurl . com /zk9fk





> On May 2, 2:51 pm, Rufus <n...@home . com > wrote:
>
> > Turning up the pressure has nothing to do with stopping the radiation...=

>
> He wants to say that by turning up the pressure in the cabin you
> reduce the red blood cell count and therefore iron content in the
> blood.  With less iron there is less oxidation of biological membranes
> which are primary target of radiation.  You can also put the people on
> a coconut/SFA-only diet 2 years prior to the mission and achieve
> similar effect since the Omega-6 and 3 are much more susceptible to
> radiation-induced oxidation than the Omega-9 Mead acid which replaces
> them when you limit your "EFA" intake.  But a better solution would be
> to remove some bone marrow (stem cells) from the cosmonauts (even
> better when they are young) and keep it safe here on the Earth till
> they return and then put it back into them.
>
> Taka


Reply from: Rufus
Date: 03 May 2008, 18:58
Re: Astronautical Oxidation

I think they keep it regulated to 8K feet MSL - I know for a fact that
that's what they do with airliners flying above 10-12K. Anything
greater requires the structure to become too heavy.

None of the below makes any sense at all...the only thing you can do to
decrease the effects of radiation is to stay away from it. The best
protection from radiation is actually dirt - protective effect is
directly proportional to density. There is no way to combat radiation
with chemistry.

--
- Rufus

ironjustice wrote:
> On May 3, 7:38 am, Taka <taka0...@gmail . com > wrote:He wants to say
> that by turning up the pressure in the cabin you reduce the red blood
> cell count and therefore iron content in the blood. <<
>
> This proved to be a futile theory though with a little checking they
> keep the pressure in the shuttle calibrated at sea level even better
> than commercial airlines.
>
> So we are back to the vitamin E / antioxidant depletion by .. ? ..
> oxidation .. ?
> Vitamin E was / is ? being used to prevent the anemia which happens in
> space.
>
> It would be something other than the pressure which is causing the
> increased oxidation in the astronaut and give more credence to the
> increased rays.
>
>
> Who loves ya.
> Tom
>
>
> Jesus Was A Vegetarian!
> * tinyurl . com /2r2nkh
>
>
> Man Is A Herbivore!
> * tinyurl . com /a3cc3
>
>
> DEAD PEOPLE WALKING
> * tinyurl . com /zk9fk
>
>
>
>
>
>> On May 2, 2:51 pm, Rufus <n...@home . com > wrote:
>>
>>> Turning up the pressure has nothing to do with stopping the radiation...
>> He wants to say that by turning up the pressure in the cabin you
>> reduce the red blood cell count and therefore iron content in the
>> blood. With less iron there is less oxidation of biological membranes
>> which are primary target of radiation. You can also put the people on
>> a coconut/SFA-only diet 2 years prior to the mission and achieve
>> similar effect since the Omega-6 and 3 are much more susceptible to
>> radiation-induced oxidation than the Omega-9 Mead acid which replaces
>> them when you limit your "EFA" intake. But a better solution would be
>> to remove some bone marrow (stem cells) from the cosmonauts (even
>> better when they are young) and keep it safe here on the Earth till
>> they return and then put it back into them.
>>
>> Taka
>

Reply from: ironjustice
Date: 05 May 2008, 00:06
Re: Astronautical Oxidation

On May 3, 9:58 am, Rufus <n...@home . com > wrote:I think they keep it
regulated to 8K feet MSL - I know for a fact that
that's what they do with airliners flying above 10-12K. Anything
greater requires the structure to become too heavy.

None of the below makes any sense at all...the only thing you can do
to
decrease the effects of radiation is to stay away from it. The best
protection from radiation is actually dirt - protective effect is
directly proportional to density. There is no way to combat
radiation
with chemistry. <<

* w w w .yale.edu/ynhti/curriculum/units/1987/6/87.06.03.x.html

The shuttle is kept at sea level pressure .. unless cabin pressure is
different from air pressure ?

AIR
Air pressure inside the cabin of the Shuttle is maintained at 1,033
grams per square centimeter (14.71 lbs.), the same as that on earth at
sea level.
These guys sure a .. keeping WITH the times ..

On May 3, 9:58 am, Rufus <n...@home . com > wrote:There is no way to
combat radiation with chemistry. <<

This has been known at least since .. 2001 ..


A. R. Kennedy1 , J. Guan1 and J. H. Ware1


(1) Department of Radiation Oncology, University of Pennsylvania
School of Medicine, 195 John Morgan Building, 3620 Hamilton Walk,
Philadelphia, PA 19104-6072, USA


Received: 20 September 2006 Accepted: 27 February 2007 Published
online: 27 March 2007


Abstract Of particular concern for the health of astronauts during
space travel is radiation from protons and high atomic number (Z),
high energy particles (HZE particles). Space radiation is known to
induce oxidative stress in astronauts after extended space flight. In
the present study, the total antioxidant status was used as a
biomarker to evaluate oxidative stress induced by proton and HZE
particle radiation in the plasma of CBA mice and the protective
effect
of dietary supplement agents. The results indicate that exposure to
proton and HZE particle radiation significantly decreased the plasma
level of total antioxidants in the irradiated CBA mice. Dietary
supplementation with l-selenomethionine (SeM) or a combination of
selected antioxidant agents (which included SeM) could partially or
completely prevent the decrease in the total antioxidant status in
the
plasma of animals exposed to proton or HZE particle radiation. These
findings suggest that exposure to space radiation may compromise the
capacity of the host antioxidant defense system; this adverse
biological effect can be prevented at least partially by dietary
supplementation with agents expected to have effects on antioxidant
activities.


* w w w .springerlink . com /content/x84v27578w8q27wk/
---------------------------------------------------------------------------=
-----


Who loves ya.
Tom


Jesus Was A Vegetarian!
* tinyurl . com /2r2nkh


Man Is A Herbivore!
* tinyurl . com /a3cc3


DEAD PEOPLE WALKING
* tinyurl . com /zk9fk



> I think they keep it regulated to 8K feet MSL - I know for a fact that
> that's what they do with airliners flying above 10-12K.  Anything
> greater requires the structure to become too heavy.
>
> None of the below makes any sense at all...the only thing you can do to
> decrease the effects of radiation is to stay away from it.  The best
> protection from radiation is actually dirt - protective effect is
> directly proportional to density.  There is no way to combat radiation
> with chemistry.
>
> --
>       - Rufus
>
>
>
> ironjustice wrote:
> > On May 3, 7:38 am, Taka <taka0...@gmail . com > wrote:He wants to say
> > that by turning up the pressure in the cabin you reduce the red blood
> > cell count and therefore iron content in the blood.  <<
>
> > This proved to be a futile theory though with a little checking they
> > keep the pressure in the shuttle calibrated at sea level even better
> > than commercial airlines.
>
> > So we are back to the vitamin E / antioxidant depletion by .. ? ..
> > oxidation .. ?
> > Vitamin E was / is ? being used to prevent the anemia which happens in
> >space.
>
> > It would be something other than the pressure which is causing the
> > increased oxidation in the astronaut and give more credence to the
> > increased rays.
>
> > Who loves ya.
> > Tom
>
> > Jesus Was A Vegetarian!
> > * tinyurl . com /2r2nkh
>
> > Man Is A Herbivore!
> > * tinyurl . com /a3cc3
>
> > DEAD PEOPLE WALKING
> > * tinyurl . com /zk9fk
>
> >> On May 2, 2:51 pm, Rufus <n...@home . com > wrote:
>
> >>> Turning up the pressure has nothing to do with stopping the radiation.=
..
> >> He wants to say that by turning up the pressure in the cabin you
> >> reduce the red blood cell count and therefore iron content in the
> >> blood.  With less iron there is less oxidation of biological membrane=
s
> >> which are primary target of radiation.  You can also put the people o=
n
> >> a coconut/SFA-only diet 2 years prior to the mission and achieve
> >> similar effect since the Omega-6 and 3 are much more susceptible to
> >> radiation-induced oxidation than the Omega-9 Mead acid which replaces
> >> them when you limit your "EFA" intake.  But a better solution would b=
e
> >> to remove some bone marrow (stem cells) from the cosmonauts (even
> >> better when they are young) and keep it safe here on the Earth till
> >> they return and then put it back into them.
>
> >> Taka- Hide quoted text -
>
> - Show quoted text -


Reply from: Rufus
Date: 05 May 2008, 01:07
Re: Astronautical Oxidation

ironjustice wrote:
> On May 3, 9:58 am, Rufus <n...@home . com > wrote:I think they keep it
> regulated to 8K feet MSL - I know for a fact that
> that's what they do with airliners flying above 10-12K. Anything
> greater requires the structure to become too heavy.
>
> None of the below makes any sense at all...the only thing you can do
> to
> decrease the effects of radiation is to stay away from it. The best
> protection from radiation is actually dirt - protective effect is
> directly proportional to density. There is no way to combat
> radiation
> with chemistry. <<
>
> * w w w .yale.edu/ynhti/curriculum/units/1987/6/87.06.03.x.html
>
> The shuttle is kept at sea level pressure .. unless cabin pressure is
> different from air pressure ?
>

Sort of - it's sort of a relative measurement. At least that's what I
always remember about it in terms of what it's trying to tell me.

Standard sea level static pressure is 14.7 psia, and cabin pressure is
whatever pressure the cabin happens to be pressurized to, expressed in
terms of equivalent pressure at a Standard Atmosphere equivalent altitude.

Example - in an airliner cabin pressurized to 8K MSL, you are walking
around in about a 10.9 psia Standard atmosphere; while the Standard
outside pressure at 35K MSL where the jet is flying is only about 3.5 psia.

Thus, the higher the differential the heavier the structure has to
become to withstand it - and that's why airliners (and military
aircraft) make the trade-off on pressurization with operating altitude.

> AIR
> Air pressure inside the cabin of the Shuttle is maintained at 1,033
> grams per square centimeter (14.71 lbs.), the same as that on earth at
> sea level.
> These guys sure a .. keeping WITH the times ..
>

I'll believe NASA, I guess...

* w w w .nas.nasa.gov/About/Education/SpaceSettlement/teacher/course/merc.html

The fact that are able to do this speaks to the advancements in loft
capability, I think. From a historical 5 psi to 14.7 psi in one
system-step is a huge increase...but again, they don't say "psia", so it
may not really be "sea level" equivalent pressure. psia= atmospheric +
gauge, so since NASA doesn't specify, I'm not clear on what they really
mean...I'd be more comfortable if they said "1 ATM".


> On May 3, 9:58 am, Rufus <n...@home . com > wrote:There is no way to
> combat radiation with chemistry. <<
>
> This has been known at least since .. 2001 ..
>
>
> A. R. Kennedy1 , J. Guan1 and J. H. Ware1
>
>
> (1) Department of Radiation Oncology, University of Pennsylvania
> School of Medicine, 195 John Morgan Building, 3620 Hamilton Walk,
> Philadelphia, PA 19104-6072, USA
>
>
> Received: 20 September 2006 Accepted: 27 February 2007 Published
> online: 27 March 2007
>
>
> Abstract Of particular concern for the health of astronauts during
> space travel is radiation from protons and high atomic number (Z),
> high energy particles (HZE particles). Space radiation is known to
> induce oxidative stress in astronauts after extended space flight. In
> the present study, the total antioxidant status was used as a
> biomarker to evaluate oxidative stress induced by proton and HZE
> particle radiation in the plasma of CBA mice and the protective
> effect
> of dietary supplement agents. The results indicate that exposure to
> proton and HZE particle radiation significantly decreased the plasma
> level of total antioxidants in the irradiated CBA mice. Dietary
> supplementation with l-selenomethionine (SeM) or a combination of
> selected antioxidant agents (which included SeM) could partially or
> completely prevent the decrease in the total antioxidant status in
> the
> plasma of animals exposed to proton or HZE particle radiation. These
> findings suggest that exposure to space radiation may compromise the
> capacity of the host antioxidant defense system; this adverse
> biological effect can be prevented at least partially by dietary
> supplementation with agents expected to have effects on antioxidant
> activities.
>

...I wonder if they've tried to breed these animals, studied any
alterations in their genetics, and what their subsequent cancer rates
are with respect to established norms...

Ionizing radiation WILL irreversibly harm you over the long term, even
if you do manage to find ways to keep yourself functional in the short
term...no thanks. After spending some time working around it, I've
learned to just plain avoid it whenever possible - because that's really
the only "protection" from it.

--
- Rufus

Reply from: -- messaggio eliminato --
Date: 01 May 2008, 01:49
-- deleted messages --
Reply from: -- messaggio eliminato --
Date: 01 May 2008, 08:49
-- deleted messages --
Reply from: Tim
Date: 01 May 2008, 10:11
Re: Astronautical Oxidation

On Tue, 29 Apr 2008 07:32:52 -0700 (PDT), ironjustice
<teamtanner@hotmail . com > wrote:

>Astronauts face space age risk
>Astronauts who spend too long in space may age prematurely and become
>more prone to cancer, new research suggests.
>Radiation in space can cause damage to living tissue
>The findings from scientists in the US could have major implications
>for plans to build moon bases and send explorers to Mars.
>
>The risks come from exposure to "space radiation" according to the
>researchers, who were funded by the American space agency Nasa.
>
>They found evidence that the high energy particles which float through
>space can have a harmful effect on mice.
>
>Cancer risk
>
>In a new report, the scientists claim that the particles can damage
>DNA.
>
>They found that the biggest effect was on the gut, and that is likely
>to lead to an increased risk of colon cancer.
>
>The mice who were exposed to radiation also aged prematurely, with
>their fur turning grey.
>
> Radiation exposure, either intentional or accidental, is inevitable
>during our lifetimes
>
>Dr Kamal Datta, who led the study at Georgetown's Lombardi
>Comprehensive Cancer Centre, said: "Radiation exposure, either
>intentional or accidental, is inevitable during our lifetimes. But
>with plans for a mission to Mars, we need to understand more about the
>nature of radiation in space."
>
>The kind of radiation found in space is known as high LET (linear
>energy transfer) radiation. It can cause concentrated damage to living
>tissue.
>
>People on Earth are shielded from it by the planet's atmosphere, but
>in space there is nothing to stop astronauts being blasted by the
>particles.
>
>
>Who loves ya.
>Tom
>
>
>Jesus Was A Vegetarian!
> * tinyurl . com /2r2nkh
>
>
>Man Is A Herbivore!
> * tinyurl . com /a3cc3
>
>
>DEAD PEOPLE WALKING
> * tinyurl . com /zk9fk
>


Anything having to do with science and measurement can be done right
here from earth using unmanned space missions. I can think of
nothing, no prison sentence, no sure way to insanity then spending it
on a spaceship to Mars.

Reply from: Rufus
Date: 02 May 2008, 08:20
Re: Astronautical Oxidation

Tim wrote:
> On Tue, 29 Apr 2008 07:32:52 -0700 (PDT), ironjustice
> <teamtanner@hotmail . com > wrote:
>
>> Astronauts face space age risk
>> Astronauts who spend too long in space may age prematurely and become
>> more prone to cancer, new research suggests.
>> Radiation in space can cause damage to living tissue
>> The findings from scientists in the US could have major implications
>> for plans to build moon bases and send explorers to Mars.
>>
>> The risks come from exposure to "space radiation" according to the
>> researchers, who were funded by the American space agency Nasa.
>>
>> They found evidence that the high energy particles which float through
>> space can have a harmful effect on mice.
>>
>> Cancer risk
>>
>> In a new report, the scientists claim that the particles can damage
>> DNA.
>>
>> They found that the biggest effect was on the gut, and that is likely
>> to lead to an increased risk of colon cancer.
>>
>> The mice who were exposed to radiation also aged prematurely, with
>> their fur turning grey.
>>
>> Radiation exposure, either intentional or accidental, is inevitable
>> during our lifetimes
>>
>> Dr Kamal Datta, who led the study at Georgetown's Lombardi
>> Comprehensive Cancer Centre, said: "Radiation exposure, either
>> intentional or accidental, is inevitable during our lifetimes. But
>> with plans for a mission to Mars, we need to understand more about the
>> nature of radiation in space."
>>
>> The kind of radiation found in space is known as high LET (linear
>> energy transfer) radiation. It can cause concentrated damage to living
>> tissue.
>>
>> People on Earth are shielded from it by the planet's atmosphere, but
>> in space there is nothing to stop astronauts being blasted by the
>> particles.
>>
>>
>> Who loves ya.
>> Tom
>>
>>
>> Jesus Was A Vegetarian!
>> * tinyurl . com /2r2nkh
>>
>>
>> Man Is A Herbivore!
>> * tinyurl . com /a3cc3
>>
>>
>> DEAD PEOPLE WALKING
>> * tinyurl . com /zk9fk
>>
>
>
> Anything having to do with science and measurement can be done right
> here from earth using unmanned space missions. I can think of
> nothing, no prison sentence, no sure way to insanity then spending it
> on a spaceship to Mars.

...part of the psych-eval for becoming an astronaut has to do with just
plain figuring out if you are someone that someone else could tolerate
being locked up in a can with for an extended period.

--
- Rufus




Login:
  Username:    Password: 
 
   Lost Password? click here!
Thread:
    Rufus
     Taka
      ironjustice
       Rufus
        ironjustice
         Rufus
  Tim
   Rufus