DrP
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Posts posted by DrP
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7 minutes ago, Saa said:
It is not tax
Sounds like tax. That's what tax is for no? You take a slice of the earnings for public spending (spending on the environment being public spending and all).
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Do you have a specific application in mind? Is it a one off requirement? Does the 'paint' have to last years or be water repellent? Are looking to protect a certain thing or are you trying to formulate a paint or is it just interest? Does it need to be a clear varnish or a coloured paint?
There are different methods of achieving a high temperature resistant char. Most intumescent paints use Ammonium Polyphoshphate which reacts with the polymer binder (if it has the right functional groups) and other charring agents in a fire situation and promotes charring and cross linking over total oxidation. Blowing agents are used to foam up the chars into a thicker spongy layer which protects the wood/substrate.
On 5/2/2019 at 4:44 PM, DARK0717 said:What im asking is "what plastic or polymer, when burned (exposed to extreme heat), makes that char or ash which will then be resistant to incredibly high temps"
They aren't just single polymers - they are a formulated blend of chemicals which form the intumescing char in an intumescent paint.
Melamine Formaldehyde resins though will intumesce on their own (but the usual 2 pack system that needs mixing to form the coating will probably contain formaldehyde and be hazardous).
On 5/2/2019 at 4:44 PM, DARK0717 said:or any polymer with immense heat resistance.
this is a different thing to intumescent paint. Just because it is heat resistant does not mean it will protect the substrate from heat. It just means the coating itself won't degrade. Again - there are many polymers that are heat resistant and all to different temperatures. Usually just to a few hundred degrees though, not thousands. Silicon containing polymers will give higher heat resistance. Again - what is the application? High temperature resistant fillers can be added to polymer blends to give higher heat and fire resistance.
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13 minutes ago, DARK0717 said:
- If i understand what you mean by carbon, then lets say, when you burn something using a blow torch, youd see black stuff (carbon).
OK - I see. The 'black stuff' that remains after a fire can be called a char or an ash. It very much depends upon what was combusting and how far the combustion has gone as to what the chemical make up of that char will be. It could also be slightly different make ups depending upon the heat of the combustion. It isn't so simple as to be just pure carbon left over. Pure carbon will go to carbon dioxide in a complete combustion and you will get no char at all.
13 minutes ago, DARK0717 said:any plastic that can simply be painted as a thin layer but creates a carbon shield when it gets exposed to burning heat.
You mean like an intumescent paint? Look up 'Intumescent Paints' on the internet and read about them.
What are you asking?
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Just now, swansont said:
I kept getting my name added to papers for several years after I left,
Actually I mentioned my lack of publications to a postdoc from our group who became a lecturer at our Uni a few years later. He said he'd seen my name on some papers that came out of the group after I left. I hope that was the case, but I never found them from searching the net. I might get back to him to see what they were. In any case - wasn't relevant to my career path in industry.
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11 minutes ago, DARK0717 said:
What polymer or plastics have very high amount of carbon or atleast carbonizing* when exposed to extreme heat?
Most common ones.
11 minutes ago, DARK0717 said:additional question: is carbon heat resistant?
To what temperature? What state of carbon? (in a polymer ((if so which)) or as graphite, bucky balls or carbon?)
Carbon will react with oxygen and enough heat to form carbon dioxide - basically it burns. Most carbon based polymers (unless they contain phosphorous or other FR functional groups) will burn. I think graphite is more 'resistant' to heat and fire but will burn to CO2 at the right temperature.
You could write an entire essay, or a book even, answering your questions. Can you be more specific?
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23 minutes ago, swansont said:
If you are doing a PhD, publishing while attaining your Masters doesn't matter as much, since there is the expectation that you will publish during (or immediately after) the PhD phase. Submitting the work for publication was a requirement for my PhD, and I know of places where multiple papers were expected/required.
If you deem publications to be crucial to your employment chances, then you have to publish as part of a terminal MSc
On 4/27/2019 at 1:12 AM, limit said:is publication history mostly only relevant if you want to continue in academia?
I think it's more relevant if you want to go into academia. If you go and work in industry I doubt they will care about publications.
I penned a couple of papers and gave them to my Ph.D. supervisor when I was doing mine. He retired soon after I graduated and he never submitted them for publications. I didn't really care as I was always headed for industry rather than lecturing or academic research. Looking back, maybe I should have pushed him to get on with it and get me published. It has made no difference for me personally, but would probably look bad if I wanted to post doc somewhere.
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1 minute ago, dimreepr said:
I can guess...
you can 'guess' indeed - but without further feedback there is no way of knowing.
1 minute ago, zapatos said:Finally the answer MichelleAna was looking for!
I think that only MichelleAna can tell us that for sure. Although I think you might be correct in thinking that Phi has guessed right... it is still speculation until the OP clears up what their needs are. She might want a hot water bottle (they are reusable)... I feel Phi probably has it, but it isn't clear and it is impossible to know without clarification.
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Just now, dimreepr said:
What do you need?
Both - but just because it works doesn't make it 'the best'. Only OP can tell us what the needs are for his water bottle.
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Just now, dimreepr said:
Seems to me the best one is the one that stops one from dying.
dying or drying?
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2 minutes ago, dimreepr said:
Oh bugger, then what is?
For what particular use? You get different types for different purposes. Without knowing what you want it for 'the best' one can't be prescribed.
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23 minutes ago, dimreepr said:
Is there a water bottle that prevents such an incursion?
Because that would be the best...
Not if it weighed 100lb and is used as water bottle for long distance runners. It depends on the specified use of the bottle.
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Just now, Alfred001 said:
) if there is no violence, how is the status of an alpha male established
Just now, Alfred001 said:more peaceful
I guess that 'more peaceful' doesn't equate to 'no violence' as you yourself postulated.
1 minute ago, Alfred001 said:The guy didn't say that there was absolutely no violence
I think Bonobos greet each other with sex like we do a handshake. Friends, sisters, mothers, daughters etc... they all put out to each other and live more peaceful lives.
I don't know if this helps or not - I don't have time to read it right now:
http://pin.primate.wisc.edu/factsheets/entry/bonobo/behav
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On 3/30/2018 at 9:13 PM, tmx3 said:If I can see it, then I can do it. If I just believe it, there's nothing to it... I believe I can fly, I believe I can touch the sky!!!
"I think about it every night and day, spread my wings and fly away"
9 minutes ago, FreeWill said:I do not think so.
Neither does anyone else who is in their right mind - did you read the OP?
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For sports, for survival, for desert conditions, rock climbing for hamsters, for cyclists, for walking around town? You can get different ones for different purposes.
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41 minutes ago, Prometheus said:
'substantial extra training' for I.V administration
I don't want to go off topic either but it seems relevant to this as an example of the training people who work in hospitals get. An old friend of mine got a job as a cleaner in the operating theatres after surgery at a nearby hospital. He said he was appalled at the fact he had absolutely no training for the job. They just gave him a mop and some other equipment and some disinfectant and told him to just scrub around. He went to his bosses and suggested what he thought was a good cleaning schedule... getting into corners and asking if he should have a certain cleaning schedule and to see if there was anything he HAD to know to do the job that he had not been told. He asked what disinfectants to use and where and what to clean to avoid the spread of super bugs etc. How should he clean the operating table. He also told them he was concerned about lack of training of the cleaners and their lack of awareness regarding superbugs and the cleaning of surgical theatres (they were just cleaners - not trained to clean medical kit). In the end they suggested he should become the cleaning supervisor and actually provide the training himself for all of the other cleaners (presumably because he seemed to know a lot about superbugs and thought there should be training in place for cleaners of important areas like the theatre and the solitary wards and things). He walked out in disgust after saying that he could not train anyone at all as he'd received no formal training himself.
Being honest - I think he should have taken the job and taught himself - he is always reading about stuff and self learning. He knew more than they did.
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12 minutes ago, studiot said:
It's not a question of speeding up the response - quite the reverse in fact.
Yea - I am fine with all that - I was wondering why the OP thought it was important. Even if it could be speeded up somehow so that you have 'instant' immunity with a single hypospray shot I can't see the need for it outside of a Sci Fi novel. Vaccines are a prevention not a cure. Surely it doesn't matter if it takes 10 minutes or 10 days for the immunity to take effect.
Sorry - I must have been in a clicky mood yesterday afternoon and I have seemed to have used up all of my likes for the 24 hour period +1 in spirit or until I'm back on line with a full clip again. ;-)
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12 hours ago, CharonY said:
overall it seems that I probably should not have answered in the first place
Your opinion is welcome to me. I get what are saying. I actually liked the main female characters in the book - although I think I am not as well read around the rest of the genre as you are, which is maybe why I liked this series so much (My experience of sci fi is pretty much Tolkien and Black Library Warhammer books when it comes to reading - I usually prefer to watch a film or box set). I see why you stopped at book 9 though... there are 3 or 4 book (7 to 10?) that do drag and don't seem to progress the story very well. It get frustrating that he leaves sub plots unresolved for one or even two books before picking them up again.
10 hours ago, fiveworlds said:I liked the books written by Robert Jordan but thought that Brandon Sanderson's continuation was hard to follow. I can't help thinking what Jordan would have written.
Maybe I found the first one of his a little clumsy... but I think he started to own it by the last one. I thought the last book was done really well. Looking into it he tried to follow Jordan's writing plans as closely as he could and some of it had already been drafted. When I posted the OP I'd just finished the last book and was excited about it and possibly over rated it in my enthusiasm... although I know people that are WAY more into it than I. Did you read the last book - A Memory of Light? I think Sanderson done a brilliant job of finishing the series in that last book.
12 hours ago, CharonY said:One of the phrases that I still remember involve pretty all of them at various points: smooth their skirts, tugging something, fold arms beneath their breasts
It's a wonder that Nynaeve has any hair left at all after the first few books. lol. Reading around some fan pages of it she is one of the least liked characters... she was one of my fav's.
Being honest I only read it because my ex wife used to gush over it so much - my marriage would have been even shorter had I not read it I think. ;-) Whatever people think about it I take joy seeing someone else so enthralled in something - she was almost obsessed with it and read it over and over... she must be on her 5th run through of it at least. :-/ It was sweet to hear her getting so excited about each new book that came out.
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10 minutes ago, Carl Fredrik Ahl said:
But why will it not work?
Read the replies from Studiot and CharonY.
17 hours ago, studiot said:Well the purpose of vaccines is to prepare and stimulate the human or animal immunological system - ie the lymphatic system.
This is not the blood system.
https://en.wikipedia.org/wiki/Lymphatic_system
Are you asking would put the stuff into a vein or an artery?
Arteries carry oxygen-rich blood away from the heart to all of the body's tissues. ... Veins become larger as they get closer to the heart. The superior vena cava is the large vein that brings blood from the head and arms to the heart, and the inferior vena cava brings blood from the abdomen and legs into the heart.What are the three main types of blood vessels? - WebMD
Putting stuff into a vein or an artery will may take it to the wrong place!Here is a readable medical publication on the subject.
and
16 hours ago, CharonY said:That is a good summary. I believe we had discussed it in an earlier thread somewhere. But essentially, when vaccines were developed, it was assumed that local accumulation followed by a slow release would yield the highest immunogenic response. This is generally referred to as a the depot effect. However, this effect was not unequivocally shown to be relevant or even present, and especially the use of adjuvants makes it questionable whether intramuscular injection site is really that important for immune activation. There are other considerations, of course, as injection into subcutaneous fat layers may result in too low mobilization.
Nonetheless, it is quite likely that with the proper adjuvants IV injection are feasible. However, as the vaccination methods were developed and tested with the "classic" method in mind and because they were shown to be reliable with minimal discomfort, there is generally no good reason to change it. One has to keep in mind that the medical profession is generally required to follow protocol rather strictly (i.e. based on the specifics that has been tested and documented), for good reasons.
Edit: regarding the lymphatic system, one could really extend the whole thing to a rather large lecture. The immune system is quite complicated but in this context it is important to recognize that both systems (i.e. blood and lymphatic system) intersect and the lymph nodes is where the lymph fluid is drained into the circulatory system. Thus while the success of vaccines is ultimately determined by the actions within the lymphatic system, they can (and have to be) detected throughout the circulatory system (typically via antigen presenting cells of sorts), where they are then directed to secondary lymphoid tissue (via the lymphatic system). The antigens can also directly enter the lymphatic system, but it is not required per se.
Also - I'll ask again, why the perceived need to speed up the intake by a few minutes? What benefit is there from having the vaccine act instantly or over a period of an hour or 2 or even a day?
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Just now, Strange said:
As that source says: it would not work as well.
..and even if it did - what would be the benefit? I don't think the speed in which it takes effect from injection to immunity has ever been an issue, or at least it isn't now.
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Just now, Carl Fredrik Ahl said:
I have read that, but thanks. Now I wonder what would happen if you were to inject it directly to the blood stream.
For what benefit? The receiver of the vaccine has been unvaccinated for their whole life - what benefit would getting into the system 40 mins quicker bring?
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16 minutes ago, koti said:
belief is that vaccines are injected directly into the bloodstream, they are actually administered into muscle or the layer of skin below the dermis where immune cells reside and circulate as occurs following natural infection”
I think I completely missed the point OP, lol, sorry.
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Although some are taken via tablet I think some might still be administered via injection. I guess a tablet is less invasive, more hygienic, less painful etc.. Although - I don't see how 40 mins is going to make a difference - it is a prevention rather than a cure.
Most people my age in the UK have a little round scar on the outside of their left arm from vaccinations given by injection at school. Some were sugar pills soaked in the vaccine and others were injections. Some children are traumatised by injections.
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12 hours ago, StringJunky said:
... capital letters to start a sentence; is it so hard to input with two hands?
You don't even need two hands. Especially if you have ever played the piano.
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What made you stop believing in God?
in Religion
Posted
It is weird seeing as the same book also says that salvation is through grace alone not through works and that all that shall believe in 'him' (gods son and his sacrifice) will be saved (regardless of calculated good or bad deeds). Just another contradiction from a book full of plot holes.