Date: 22/11/2015 13:49:54
From: monkey skipper
ID: 804330
Subject: My Wish List for Science Discoveries
Not being a researcher in the science sector but having an innate interest in research and what potential answers there could be for some of the common world problems. I think about possible solutions, sometimes by choice or sometimes because I am confronted by problems in everyday life(like most I suspect)
One problem in the world is to manage introduced plant species decimating native vegetation and generally upsetting the balance of environments. For example, lantana. I am aware there was a biological control systems suggested for lantana a bug of sorts from memory. Interestingly I was watching a documentary about plants and trees that disperse chemical into the air and thee surrounding plants species can respond and be affected by those chemicals. The oak trees (I think) for examples disperse a gas into the air that ensure the areas weeds and competing plants are controlled. I wandered if this could be an answer to controlling weed invasion by isolating Australian native plants with this capacity to emit chemicals that fortunately could be a herbicide for lantana as well as one example? Or could this understanding be used sensibly and eco friendly ways into our future for invasive weed species.
I am also interested in discovering what our ofactory system can do with chemicals that are administered as a potential way of leveling brain responses for hyper vigilance in the future to help support therapies for PTSD and anxiety disorders generally.
I would like to think you lot have curiosities in specific subjects and potential answers that you postulate about.
Care to share ..?
Date: 22/11/2015 13:56:42
From: The Rev Dodgson
ID: 804334
Subject: re: My Wish List for Science Discoveries
monkey skipper said:
Not being a researcher in the science sector but having an innate interest in research and what potential answers there could be for some of the common world problems. I think about possible solutions, sometimes by choice or sometimes because I am confronted by problems in everyday life(like most I suspect)
One problem in the world is to manage introduced plant species decimating native vegetation and generally upsetting the balance of environments. For example, lantana. I am aware there was a biological control systems suggested for lantana a bug of sorts from memory. Interestingly I was watching a documentary about plants and trees that disperse chemical into the air and thee surrounding plants species can respond and be affected by those chemicals. The oak trees (I think) for examples disperse a gas into the air that ensure the areas weeds and competing plants are controlled. I wandered if this could be an answer to controlling weed invasion by isolating Australian native plants with this capacity to emit chemicals that fortunately could be a herbicide for lantana as well as one example? Or could this understanding be used sensibly and eco friendly ways into our future for invasive weed species.
I am also interested in discovering what our ofactory system can do with chemicals that are administered as a potential way of leveling brain responses for hyper vigilance in the future to help support therapies for PTSD and anxiety disorders generally.
I would like to think you lot have curiosities in specific subjects and potential answers that you postulate about.
Care to share ..?
Here are some of the things I wish science would come up with:
1. A comprehensive model of how concrete really behaves under tensile strain, including interaction between creep, shrinkage and thermal stresses.
2. A computer program that would apply this model to allow accurate analysis of reinforced concrete in structures, withought me having to fudge my own version.
3. A cure for cancer.
Date: 22/11/2015 14:01:30
From: dv
ID: 804336
Subject: re: My Wish List for Science Discoveries
The Rev Dodgson said:
monkey skipper said:
Not being a researcher in the science sector but having an innate interest in research and what potential answers there could be for some of the common world problems. I think about possible solutions, sometimes by choice or sometimes because I am confronted by problems in everyday life(like most I suspect)
One problem in the world is to manage introduced plant species decimating native vegetation and generally upsetting the balance of environments. For example, lantana. I am aware there was a biological control systems suggested for lantana a bug of sorts from memory. Interestingly I was watching a documentary about plants and trees that disperse chemical into the air and thee surrounding plants species can respond and be affected by those chemicals. The oak trees (I think) for examples disperse a gas into the air that ensure the areas weeds and competing plants are controlled. I wandered if this could be an answer to controlling weed invasion by isolating Australian native plants with this capacity to emit chemicals that fortunately could be a herbicide for lantana as well as one example? Or could this understanding be used sensibly and eco friendly ways into our future for invasive weed species.
I am also interested in discovering what our ofactory system can do with chemicals that are administered as a potential way of leveling brain responses for hyper vigilance in the future to help support therapies for PTSD and anxiety disorders generally.
I would like to think you lot have curiosities in specific subjects and potential answers that you postulate about.
Care to share ..?
Here are some of the things I wish science would come up with:
1. A comprehensive model of how concrete really behaves under tensile strain, including interaction between creep, shrinkage and thermal stresses.
2. A computer program that would apply this model to allow accurate analysis of reinforced concrete in structures, withought me having to fudge my own version.
3. A cure for cancer.
Well there are plenty of cures for various cancers and the other two look kind of nerdy, so I am going to say “a complete dynamic model for biogenesis.”
Date: 22/11/2015 14:08:43
From: monkey skipper
ID: 804340
Subject: re: My Wish List for Science Discoveries
Rev, you have worked in structural programs for areas affected by earthquakes if I recall?
Would your wish list help for those reasons as well?
Date: 22/11/2015 14:10:35
From: monkey skipper
ID: 804343
Subject: re: My Wish List for Science Discoveries
An accurate climate model that is accepted as correct could be useful as well.
i was fond of my urban development model. Geoff d was keen which was encouraging at the time.
Date: 22/11/2015 14:21:46
From: The Rev Dodgson
ID: 804357
Subject: re: My Wish List for Science Discoveries
monkey skipper said:
Rev, you have worked in structural programs for areas affected by earthquakes if I recall?
Would your wish list help for those reasons as well?
Well I was leaving dv to go for a reliable earthquake prediction system, but yes, in the absence of that my 1 and 2 would help a lot with designing concrete structures perform better under earthquake loading.
But the biggest thing that would help in that respect would be:
4. Finding a way to get people to act in their own long term best interests, rather than making/saving a quick buck.
Date: 22/11/2015 14:24:32
From: monkey skipper
ID: 804359
Subject: re: My Wish List for Science Discoveries
The Rev Dodgson said:
monkey skipper said:
Rev, you have worked in structural programs for areas affected by earthquakes if I recall?
Would your wish list help for those reasons as well?
Well I was leaving dv to go for a reliable earthquake prediction system, but yes, in the absence of that my 1 and 2 would help a lot with designing concrete structures perform better under earthquake loading.
I agree this would be most helpful.
_________________________________________________________________________________________
But the biggest thing that would help in that respect would be:
******4. Finding a way to get people to act in their own long term best interests, rather than making/saving a quick buck.********
Regulation is the way forward there I am afraid otherwise personal choice will not achieve this outcome going forward ,
Date: 22/11/2015 14:25:47
From: monkey skipper
ID: 804360
Subject: re: My Wish List for Science Discoveries
monkey skipper said:
The Rev Dodgson said:
monkey skipper said:
Rev, you have worked in structural programs for areas affected by earthquakes if I recall?
Would your wish list help for those reasons as well?
Well I was leaving dv to go for a reliable earthquake prediction system, but yes, in the absence of that my 1 and 2 would help a lot with designing concrete structures perform better under earthquake loading.
I agree this would be most helpful.
_________________________________________________________________________________________
But the biggest thing that would help in that respect would be:
******4. Finding a way to get people to act in their own long term best interests, rather than making/saving a quick buck.********
Regulation is the way forward there I am afraid otherwise personal choice will not achieve this outcome going forward ,
Sensible cost effective designs makes that affordable from my perspective.
Date: 22/11/2015 14:47:30
From: Bubblecar
ID: 804366
Subject: re: My Wish List for Science Discoveries
A cure for death, that would be a basic one.
Date: 22/11/2015 14:48:43
From: dv
ID: 804367
Subject: re: My Wish List for Science Discoveries
Bubblecar said:
A cure for death, that would be a basic one.
They can postpone but ultimately we will all die.
Date: 22/11/2015 14:54:56
From: Bubblecar
ID: 804369
Subject: re: My Wish List for Science Discoveries
dv said:
Bubblecar said:
A cure for death, that would be a basic one.
They can postpone but ultimately we will all die.
It might be possible to channel life into a form that will only perish if the universe itself kicks the bucket.
Date: 22/11/2015 14:56:01
From: stumpy_seahorse
ID: 804370
Subject: re: My Wish List for Science Discoveries
Bubblecar said:
A cure for death, that would be a basic one.
bugger that.
No way i want to live forever
Date: 22/11/2015 14:56:43
From: PermeateFree
ID: 804371
Subject: re: My Wish List for Science Discoveries
Bubblecar said:
dv said:
Bubblecar said:
A cure for death, that would be a basic one.
They can postpone but ultimately we will all die.
It might be possible to channel life into a form that will only perish if the universe itself kicks the bucket.
Think you would need a very good hobby.
Date: 22/11/2015 14:56:46
From: Bubblecar
ID: 804372
Subject: re: My Wish List for Science Discoveries
stumpy_seahorse said:
Bubblecar said:
A cure for death, that would be a basic one.
bugger that.
No way i want to live forever
I’ve never understood that attitude.
Date: 22/11/2015 14:59:23
From: buffy
ID: 804374
Subject: re: My Wish List for Science Discoveries
stumpy_seahorse said:
Bubblecar said:
A cure for death, that would be a basic one.
bugger that.
No way i want to live forever
+1
Date: 22/11/2015 15:01:37
From: stumpy_seahorse
ID: 804375
Subject: re: My Wish List for Science Discoveries
Bubblecar said:
stumpy_seahorse said:
Bubblecar said:
A cure for death, that would be a basic one.
bugger that.
No way i want to live forever
I’ve never understood that attitude.
I’m not saying I want to die, but I wouldn’t want to live to 100. I know I’ll fall well short of that, but i would be happy doubling my current age, about that time again would be just right.
It’s not like I have ambitions to circumnavigate the world before I die, have no kids to earn an inheritance for, living forever would be a rather boring time i reckon…
Date: 22/11/2015 15:05:10
From: The Rev Dodgson
ID: 804376
Subject: re: My Wish List for Science Discoveries
stumpy_seahorse said:
It’s not like I have ambitions to circumnavigate the world before I die, have no kids to earn an inheritance for, living forever would be a rather boring time i reckon…
The first 10,000 years were the worst.
The next 10,000 years were the worst too.
After that, I went into a bit of a decline.
Date: 22/11/2015 15:06:28
From: Bubblecar
ID: 804377
Subject: re: My Wish List for Science Discoveries
I never get bored. And I never have enough time…
Date: 22/11/2015 15:07:20
From: stumpy_seahorse
ID: 804378
Subject: re: My Wish List for Science Discoveries
I see it as a bit of a selfish attitude wanting to live forever.
When you’ve had a good life, it’s time to step out of the way let a new bright spark in.
Who knows, you could be making way for the mind that cures cancer..
Date: 22/11/2015 15:10:00
From: PermeateFree
ID: 804379
Subject: re: My Wish List for Science Discoveries
stumpy_seahorse said:
I see it as a bit of a selfish attitude wanting to live forever.
When you’ve had a good life, it’s time to step out of the way let a new bright spark in.
Who knows, you could be making way for the mind that cures cancer..
Somehow, I don’t think bubbles will be won over with that argument.
Date: 22/11/2015 15:12:14
From: stumpy_seahorse
ID: 804380
Subject: re: My Wish List for Science Discoveries
PermeateFree said:
stumpy_seahorse said:
I see it as a bit of a selfish attitude wanting to live forever.
When you’ve had a good life, it’s time to step out of the way let a new bright spark in.
Who knows, you could be making way for the mind that cures cancer..
Somehow, I don’t think bubbles will be won over with that argument.
it’s not an arguement.
Mr Car said he didn’t understand my view on the topic, so i posted it
Date: 22/11/2015 15:13:20
From: monkey skipper
ID: 804381
Subject: re: My Wish List for Science Discoveries
How to make artificial eyes that work could be kind of nice, given the cochlear implant helps the deaf. Would you believe the scientist who developed the cochlear implant was dismissed by his peers as a mad scientist. His father was hearing impaired and was part of the motivation to discover precisely what he successfully did.
Date: 22/11/2015 15:13:51
From: Bubblecar
ID: 804382
Subject: re: My Wish List for Science Discoveries
We’d better let this thread revert to its original topic, but I will just say:
It’s certainly not selfish to want future generations to live many times longer than we can hope for ourselves. I would like humanity to invest a lot more research into extending human lifespans, but I don’t realistically expect to benefit from it myself.
Date: 22/11/2015 15:16:02
From: monkey skipper
ID: 804383
Subject: re: My Wish List for Science Discoveries
Bubblecar said:
We’d better let this thread revert to its original topic, but I will just say:
It’s certainly not selfish to want future generations to live many times longer than we can hope for ourselves. I would like humanity to invest a lot more research into extending human lifespans, but I don’t realistically expect to benefit from it myself.
May I ask why? I don’t criticize as much as wonder why? The ageing population of Australia makes people concerned from a financial perspective. I am guessing your wish is for some other reason?
Date: 22/11/2015 15:16:22
From: stumpy_seahorse
ID: 804384
Subject: re: My Wish List for Science Discoveries
Bubblecar said:
We’d better let this thread revert to its original topic, but I will just say:
It’s certainly not selfish to want future generations to live many times longer than we can hope for ourselves. I would like humanity to invest a lot more research into extending human lifespans, but I don’t realistically expect to benefit from it myself.
i’d rather see them increase the quality of life by preventing diseases and conditions that disable.
Improving quality of life would be much better than improving quantity IMO
Date: 22/11/2015 15:17:35
From: monkey skipper
ID: 804385
Subject: re: My Wish List for Science Discoveries
stumpy_seahorse said:
Bubblecar said:
We’d better let this thread revert to its original topic, but I will just say:
It’s certainly not selfish to want future generations to live many times longer than we can hope for ourselves. I would like humanity to invest a lot more research into extending human lifespans, but I don’t realistically expect to benefit from it myself.
i’d rather see them increase the quality of life by preventing diseases and conditions that disable.
Improving quality of life would be much better than improving quantity IMO
they perhaps go hand in hand
Date: 22/11/2015 15:19:22
From: PermeateFree
ID: 804386
Subject: re: My Wish List for Science Discoveries
stumpy_seahorse said:
PermeateFree said:
stumpy_seahorse said:
I see it as a bit of a selfish attitude wanting to live forever.
When you’ve had a good life, it’s time to step out of the way let a new bright spark in.
Who knows, you could be making way for the mind that cures cancer..
Somehow, I don’t think bubbles will be won over with that argument.
it’s not an arguement.
Mr Car said he didn’t understand my view on the topic, so i posted it
argument
b. A fact or statement put forth as proof or evidence; a reason: The current low mortgage rates are an argument for buying a house now.
http://www.thefreedictionary.com/argument
Date: 22/11/2015 15:19:53
From: stumpy_seahorse
ID: 804387
Subject: re: My Wish List for Science Discoveries
monkey skipper said:
Bubblecar said:
We’d better let this thread revert to its original topic, but I will just say:
It’s certainly not selfish to want future generations to live many times longer than we can hope for ourselves. I would like humanity to invest a lot more research into extending human lifespans, but I don’t realistically expect to benefit from it myself.
May I ask why? I don’t criticize as much as wonder why? The ageing population of Australia makes people concerned from a financial perspective. I am guessing your wish is for some other reason?
that would be another issue from living forever. once a human gets to a certain age, they no longer contribute to a productive society.
If they don’t work, they don’t pay taxes, they aren’t involved in building/updating/maintaining infrastructure.
Sure, they’ve worked hard to get to that point and enjoy that time of their life, but extend that by 50, 100, 500 years and it just isn’t viable
Date: 22/11/2015 15:21:20
From: Bubblecar
ID: 804388
Subject: re: My Wish List for Science Discoveries
monkey skipper said:
Bubblecar said:
We’d better let this thread revert to its original topic, but I will just say:
It’s certainly not selfish to want future generations to live many times longer than we can hope for ourselves. I would like humanity to invest a lot more research into extending human lifespans, but I don’t realistically expect to benefit from it myself.
May I ask why? I don’t criticize as much as wonder why? The ageing population of Australia makes people concerned from a financial perspective. I am guessing your wish is for some other reason?
Because for most people life is richly enjoyable and interesting, and human consciousness deserves a much longer engagement with the world than the brief peep we are currently allotted.
Date: 22/11/2015 15:22:21
From: Bubblecar
ID: 804389
Subject: re: My Wish List for Science Discoveries
I’d be looking at increasing quantity while maintaining (and increasing) quality.
Date: 22/11/2015 15:23:29
From: stumpy_seahorse
ID: 804391
Subject: re: My Wish List for Science Discoveries
PermeateFree said:
stumpy_seahorse said:
PermeateFree said:
Somehow, I don’t think bubbles will be won over with that argument.
it’s not an arguement.
Mr Car said he didn’t understand my view on the topic, so i posted it
argument
b. A fact or statement put forth as proof or evidence; a reason: The current low mortgage rates are an argument for buying a house now.
http://www.thefreedictionary.com/argument
see, that’s where you have had trouble in arguements in the past…
a ‘view’ is neither proof, nor evidence…
Date: 22/11/2015 15:28:21
From: Bubblecar
ID: 804393
Subject: re: My Wish List for Science Discoveries
We’re not arguing, we’re just chatting :)
Date: 22/11/2015 15:33:36
From: Arts
ID: 804395
Subject: re: My Wish List for Science Discoveries
that’s the crux of ‘living longer’ it has to be aligned with living well. You wouldn’t want to live longer with many of the ‘diseases of age’ we have presently
Date: 22/11/2015 15:35:01
From: Arts
ID: 804396
Subject: re: My Wish List for Science Discoveries
also… the psychology of living longer. How would living to 150 affect our brains, our way of thinking? Even if our body was healthy and pain free..
Date: 22/11/2015 16:06:27
From: wookiemeister
ID: 804403
Subject: re: My Wish List for Science Discoveries
strictly for joe australian its not going to be relevant
the Free Trade Agreement is about to annihilate you so enjoy it whilst it all lasts
live as long as you can it won’t help you now
Date: 22/11/2015 16:30:21
From: mollwollfumble
ID: 804419
Subject: re: My Wish List for Science Discoveries
> For example, lantana.
When young, I used to hate lantana as being impossible to bushwalk through. Now whenever I encounter lantana I search eagerly for ripe berries, they’re delicious. I gather that the deliciousness of the berries is why Australian native birds love lantana so much – as well as protecting them from predators such as humans.
> A comprehensive model of how concrete really behaves under tensile strain, including interaction between creep, shrinkage and thermal stresses.
Don’t we have that already? How far are we away from a unified model?
I worked for a while with the CSIRO group in North Ryde that did research on concrete, before it was shut down.
> An accurate climate model that is accepted as correct.
(Have I worked on everything?) My PhD was on microclimates, and eventually I got to know a fair bit about how climate models work. Or more to the point, don’t work.
> Finding a way to get people to act in their own long term best interests
Morality and ethics formed an essential part of education in ancient Greece, Rome and China. The whole religion of Confucius is based on this. Very much worth doing.
> A cure for death
I’d actually prefer death to total and permanent disablement.
> It might be possible to channel life into a form that will only perish if the universe itself kicks the bucket.
Nice! I love it. Can we get an ARC grant for that one?
Wanted science discoveries:
1. Supernova in the Milky Way.
2. What is ball lightning?
3. The interface between QM and GR.
4. Origin of diffuse interstellar bands.
5. Origin of life, from amino acids to bacteria.
6. What is dark matter?
7. Aliens.
There are also dozens of “completing the picture” discoveries wanted.
eg.
We still don’t know what all the Sun’s spectral lines are.
There are still major gaps in our knowledge about how planets form.
Why do we never see comets coming from the Oort clouds of other stars?
What is the fossil history of life on Earth?
How many species are there?
Date: 22/11/2015 16:39:55
From: wookiemeister
ID: 804426
Subject: re: My Wish List for Science Discoveries
i spoke to some fellah that had aspired to be a ranger at some point (and ended up driving a van filling up cigarette machines and counting hundreds of thousands of dollars in loose change)
well he mentioned to me that lantana was eating away forests by crowding out new tree growth
when i suggested spraying he said it wasn’t worth the bother, the forests would just have to be eaten away (spoken by a true government ranger)
Date: 22/11/2015 16:47:59
From: mollwollfumble
ID: 804434
Subject: re: My Wish List for Science Discoveries
mollwollfumble said:
> A comprehensive model of how concrete really behaves under tensile strain, including interaction between creep, shrinkage and thermal stresses.
Don’t we have that already? How far are we away from a unified model?
I worked for a while with the CSIRO group in North Ryde that did research on concrete, before it was shut down.
There are also dozens of “completing the picture” discoveries wanted.
eg.
How close does this come to answering your question Rev D?
http://fire.nist.gov/bfrlpubs/build95/PDF/b95081.pdf
For software, I used to use ANSYS. Very expensive. ANSYS Mechanical handles tensile strain + thermal stresses + creep. I’m not so sure how well it handles shrinkage.
Date: 22/11/2015 16:48:43
From: PermeateFree
ID: 804436
Subject: re: My Wish List for Science Discoveries
stumpy_seahorse said:
PermeateFree said:
stumpy_seahorse said:
it’s not an arguement.
Mr Car said he didn’t understand my view on the topic, so i posted it
argument
b. A fact or statement put forth as proof or evidence; a reason: The current low mortgage rates are an argument for buying a house now.
http://www.thefreedictionary.com/argument
see, that’s where you have had trouble in arguements in the past…
a ‘view’ is neither proof, nor evidence…
For your information, words often have different meanings and can be used in different ways, something you don’t appear to understand. And I agree your lack of appreciation is certainly where you have gotten into trouble in the past.
Date: 22/11/2015 16:54:25
From: stumpy_seahorse
ID: 804442
Subject: re: My Wish List for Science Discoveries
PermeateFree said:
stumpy_seahorse said:
PermeateFree said:
argument
b. A fact or statement put forth as proof or evidence; a reason: The current low mortgage rates are an argument for buying a house now.
http://www.thefreedictionary.com/argument
see, that’s where you have had trouble in arguements in the past…
a ‘view’ is neither proof, nor evidence…
For your information, words often have different meanings and can be used in different ways, something you don’t appear to understand. And I agree your lack of appreciation is certainly where you have gotten into trouble in the past.
then why use the definition as an example?
if you aren’t using that definition yourself?
seems like a long winded attempt t the old “i know you are but what am i”
Date: 22/11/2015 16:58:38
From: PermeateFree
ID: 804446
Subject: re: My Wish List for Science Discoveries
stumpy_seahorse said:
PermeateFree said:
stumpy_seahorse said:
see, that’s where you have had trouble in arguements in the past…
a ‘view’ is neither proof, nor evidence…
For your information, words often have different meanings and can be used in different ways, something you don’t appear to understand. And I agree your lack of appreciation is certainly where you have gotten into trouble in the past.
then why use the definition as an example?
if you aren’t using that definition yourself?
seems like a long winded attempt t the old “i know you are but what am i”
Instead of placing your own incorrect definition on the word, why don’t you use the link supplied where ‘argument’ is used in a variety of ways, at least then you would gain a better understanding.
Date: 22/11/2015 17:06:26
From: stumpy_seahorse
ID: 804451
Subject: re: My Wish List for Science Discoveries
PermeateFree said:
stumpy_seahorse said:
PermeateFree said:
For your information, words often have different meanings and can be used in different ways, something you don’t appear to understand. And I agree your lack of appreciation is certainly where you have gotten into trouble in the past.
then why use the definition as an example?
if you aren’t using that definition yourself?
seems like a long winded attempt t the old “i know you are but what am i”
Instead of placing your own incorrect definition on the word, why don’t you use the link supplied where ‘argument’ is used in a variety of ways, at least then you would gain a better understanding.
you were the one who used the dictionary definition to reinforce your point of view, then posted “For your information, words often have different meanings and can be used in different ways, something you don’t appear to understand”…
seems a bit ironic…
why define something, then claim the opposite?
seems counter-productive…
Date: 22/11/2015 17:12:20
From: The Rev Dodgson
ID: 804455
Subject: re: My Wish List for Science Discoveries
mollwollfumble said:
mollwollfumble said:
> A comprehensive model of how concrete really behaves under tensile strain, including interaction between creep, shrinkage and thermal stresses.
Don’t we have that already? How far are we away from a unified model?
I worked for a while with the CSIRO group in North Ryde that did research on concrete, before it was shut down.
There are also dozens of “completing the picture” discoveries wanted.
eg.
How close does this come to answering your question Rev D? http://fire.nist.gov/bfrlpubs/build95/PDF/b95081.pdf
For software, I used to use ANSYS. Very expensive. ANSYS Mechanical handles tensile strain + thermal stresses + creep. I’m not so sure how well it handles shrinkage.
That paper is still pretty much how we do it now (20 years on). The main problems I see with it are:
1. The strain distribution between cracks is treated as being a combination of linear behaviour in the concrete up to a fixed tensile strength, and bond-slip at the steel concrete interface, but with deformed bars there is close to zero slip, and the apparent slip is due to micro-cracking in the concrete.
2. Concrete creep is treated as being proportional to tensile strain up to the tensile failure stress, but in fact I suspect it becomes highly non-linear. There seems to be very little research on this.
3. Creep rupture effects are ignored in virtually all recent research. The only thing I have found is a Phd paper from the mid-70s, and I suspect that modern concretes may behave very differently.
4. The effect of fatigue on concrete tensile failure stress is ignored, but I suspect this is highly significant.
5. Differential shrinkage effects are usually ignored, or treated in a very simplistic way.
Regarding the software, you could model all these things in current software (if you had the information about the concrete behaviour) but it would be very time consuming for design purposes..
Date: 22/11/2015 17:18:15
From: PermeateFree
ID: 804458
Subject: re: My Wish List for Science Discoveries
stumpy_seahorse said:
PermeateFree said:
stumpy_seahorse said:
then why use the definition as an example?
if you aren’t using that definition yourself?
seems like a long winded attempt t the old “i know you are but what am i”
Instead of placing your own incorrect definition on the word, why don’t you use the link supplied where ‘argument’ is used in a variety of ways, at least then you would gain a better understanding.
you were the one who used the dictionary definition to reinforce your point of view, then posted “For your information, words often have different meanings and can be used in different ways, something you don’t appear to understand”…
seems a bit ironic…
why define something, then claim the opposite?
seems counter-productive…
Talk about making mountains out of mole hills, you take the cake. Totally counter-productive talking with you.
Date: 22/11/2015 18:21:53
From: mollwollfumble
ID: 804470
Subject: re: My Wish List for Science Discoveries
The Rev Dodgson said:
mollwollfumble said:
> A comprehensive model of how concrete really behaves under tensile strain, including interaction between creep, shrinkage and thermal stresses.
Don’t we have that already? How far are we away from a unified model?
I worked for a while with the CSIRO group in North Ryde that did research on concrete, before it was shut down.
How close does this come to answering your question Rev D? http://fire.nist.gov/bfrlpubs/build95/PDF/b95081.pdf
For software, I used to use ANSYS. Very expensive. ANSYS Mechanical handles tensile strain + thermal stresses + creep. I’m not so sure how well it handles shrinkage.
That paper is still pretty much how we do it now (20 years on). The main problems I see with it are:
1. The strain distribution between cracks is treated as being a combination of linear behaviour in the concrete up to a fixed tensile strength, and bond-slip at the steel concrete interface, but with deformed bars there is close to zero slip, and the apparent slip is due to micro-cracking in the concrete.
2. Concrete creep is treated as being proportional to tensile strain up to the tensile failure stress, but in fact I suspect it becomes highly non-linear. There seems to be very little research on this.
3. Creep rupture effects are ignored in virtually all recent research. The only thing I have found is a Phd paper from the mid-70s, and I suspect that modern concretes may behave very differently.
4. The effect of fatigue on concrete tensile failure stress is ignored, but I suspect this is highly significant.
5. Differential shrinkage effects are usually ignored, or treated in a very simplistic way.
Regarding the software, you could model all these things in current software (if you had the information about the concrete behaviour) but it would be very time consuming for design purposes..
That’s six very good points (including the time consuming). I wonder if I have anything on my bookshelf about any of these, if so then the information in it would be very very old.
How would the composition of concrete affect all of those? Concrete varies with cement manufacturing techniques, aggregate properties, sand, additives, slump, porosity, water purity, etc.
I’ll give this some more thought.
Date: 22/11/2015 19:26:06
From: CrazyNeutrino
ID: 804481
Subject: re: My Wish List for Science Discoveries
monkey skipper said:
Not being a researcher in the science sector but having an innate interest in research and what potential answers there could be for some of the common world problems. I think about possible solutions, sometimes by choice or sometimes because I am confronted by problems in everyday life(like most I suspect)
One problem in the world is to manage introduced plant species decimating native vegetation and generally upsetting the balance of environments. For example, lantana. I am aware there was a biological control systems suggested for lantana a bug of sorts from memory. Interestingly I was watching a documentary about plants and trees that disperse chemical into the air and thee surrounding plants species can respond and be affected by those chemicals. The oak trees (I think) for examples disperse a gas into the air that ensure the areas weeds and competing plants are controlled. I wandered if this could be an answer to controlling weed invasion by isolating Australian native plants with this capacity to emit chemicals that fortunately could be a herbicide for lantana as well as one example? Or could this understanding be used sensibly and eco friendly ways into our future for invasive weed species.
I am also interested in discovering what our ofactory system can do with chemicals that are administered as a potential way of leveling brain responses for hyper vigilance in the future to help support therapies for PTSD and anxiety disorders generally.
I would like to think you lot have curiosities in specific subjects and potential answers that you postulate about.
Care to share ..?
with understanding of plant genetics, such possibilities could be breed into other plants
these scientists have succeeded in implanting circuits into plants
http://www.inquisitr.com/2581508/cyborg-rose-researchers-develop-incredible-electronic-plants/
Most roses have thorns, but cyborg roses that were recently created in a Swedish laboratory have transistors and electrodes. Researchers at Linköping University have created bionic roses incorporating electronic materials which are compatible with plants. Details surrounding this incredible creation were published Friday in the journal Science Advances. One of their bionic roses have electronic circuits that run along its stem. Another rose can change color when a voltage is applied to it.
more…
Date: 22/11/2015 21:52:47
From: mollwollfumble
ID: 804518
Subject: re: My Wish List for Science Discoveries
stumpy_seahorse said:
Bubblecar said:
We’d better let this thread revert to its original topic, but I will just say:
It’s certainly not selfish to want future generations to live many times longer than we can hope for ourselves. I would like humanity to invest a lot more research into extending human lifespans, but I don’t realistically expect to benefit from it myself.
i’d rather see them increase the quality of life by preventing diseases and conditions that disable.
Improving quality of life would be much better than improving quantity IMO
Agree
Date: 22/11/2015 22:21:25
From: CrazyNeutrino
ID: 804529
Subject: re: My Wish List for Science Discoveries
Cure of Allergies and Asthma
Date: 22/11/2015 22:32:36
From: CrazyNeutrino
ID: 804533
Subject: re: My Wish List for Science Discoveries
>>>I am also interested in discovering what our ofactory system can do with chemicals that are administered as a potential way of leveling brain responses for hyper vigilance in the future to help support therapies for PTSD and anxiety disorders generally.
Medical marijuana cleared to treat PTSD in Washington
After listening to several speakers, including Army veteran Catharine Jeter and Jedidiah Haney from the Yakima-based CauseM cannabis trade organization, a group of around 75 met on the steps of the Legislative Building Thursday for the Twenty22Many organization rally. Their goal was to raise awareness of Posttraumatic Stress Disorder and issues surrounding suicide, and to promote the use of medical cannabis as a treatment option.
and
http://blog.sfgate.com/smellthetruth/2015/08/03/war-veterans-suffering-from-ptsd-are-using-medical-marijuana-heres-why/
Date: 24/11/2015 02:51:53
From: mollwollfumble
ID: 804811
Subject: re: My Wish List for Science Discoveries
There’s one that I very much hesitate to add, because the prospect delights me but the full consequences appal me.
Discovery of volcanic action in one of the wide rift valleys that form the centres of mid-ocean ridges.