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Artisi

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Posts posted by Artisi

  1. 6 hours ago, cooked said:

    I'm not sure if I understand the OP correctly. You will not be able to 'suck' water from a depth of more than about 8 or 9 metres, no matter how powerful the pump is. Even if you do manage to pump up water, the rate of flow will be minimal. This is why most boreholes have a submersed pump,

    The diameter of the pipe only plays a secondary role in as far as water supply is concerned although obviously 1 mm won't give you much joy, and 10cm diameter would be a waste of money. 3/4" or 1" pipe is what most people will go for, the loss of pressure due to internal friction between the water and the pipe walls over a length of 10 metres is not significant.

    "Because a perfect vacuum is never achieved and because some lift is lost to friction in the suction line, the maximum actual suction lift for a positive-displacement pump is approximately 22 ft. The maximum actual suction lift for a centrifugal pump is approximately 15 ft when pumping water from an open air tank."

    If I misunderstood the OP or I misunderstood my classes in fluid mechanics, just ignore me.

    I wouldn't like to be impolite by ignoring you, but 15ft is too low a number for correctly sized pipework but without a pump curve showing NPSH, knowing the elevation of the installation, water temperature, flowrate etc of the installation I think you can for most purposes you consider 23 / 25 as a reasonable suction lift. As the OP is sighting 15ft lift, we can assume this is within the pumps capability. 

    The overheating is another unrelated problem, and as already indicated by wirejerker probably low voltage and maybe the cause of the submersible burnout. 

  2. 32 minutes ago, Orton Rd said:

    Young husband of Mrs cousin died yesterday just 21, they had a baby last year, hit by a lorry at night up country. He had no lights on his motor bike (using the light on his phone!) speeding and no helmet,  amazingly the lorry driver admitted fault and will be paying out.When will they ever learn?

    How long is a piece of string? 

  3. 2 hours ago, Felt 35 said:

     Songran festival in 2118 on 13 April will probably be a National day of  mourning to remember the fallen in the 21st century:sad:

    organised by who, the government?

     unlikely as they only talk and make stupid statements as they don't really care, so why would they even contemplate a day of mourning.

  4. 2 hours ago, bankruatsteve said:

    1" should be fine.  

    agree , 1" should be ok but going to a larger diameter will not cause any problems - and 15' lift is also ok, and I would stick with the 10m of pipe to allow for lowering the water level during pumping and the  for dry session if it has any effect on the water level.

  5. 23 hours ago, attrayant said:

     

    Let me get this straight.  You'd prefer to go to the hospital... when the doctors and nurses aren't there?  Who do you expect to receive treatment from, the janitorial staff?

     

     

    I think I'll do that.  From our friends at The Straight Dope:

     

    When doctors go on strike does the death rate go down?

     

     

    Don't worry; he's probably not referring to you.

     

     

     

    you did read the full article , then maybe you didn't or can't, if you had read it you might have noticed the following:

    "Any seeming benefit to patients’ health likely resulted from about 11,000 fewer operations (presumably elective) being performed that month than was typical, meaning that an estimated 50 to 150 patients who could have been expected to die didn’t" ---- Note:  50 to 150 didn't die from elective surgery - so 50 to 150 lives saved, not a bad effort.  

     

    Plus it might be worthwhile to expand your reading instead of sticking to a site solely dedicated to finding fault with legitimate articles -- The Straight Dope does have its place - but ...

     

    Worth a read if interested.

    \https://www.huffingtonpost.co.uk/dr-raj-persaud/when-doctors-go-on-strike_b_1513689.html

     

     

  6. On 04/04/2018 at 5:35 PM, connda said:

    I'll pay the fee instead of wearing the 'officially sanctioned' Thai dress.

    Also, the traditional Thai dress for the 99% is not the 'traditional clothing' of the Hi-Sos that is being peddled by the Thai ministries.  What is being forwarded as 'traditional dress' is an exercise in revisionist history.

     

    This was the traditional Thai dress for the 'average' Thai citizen perhaps with the exception of the city dwellers who were not the majority population in the country prior to 1942 when Western dress was mandated and a country-wide dress code was enforced:
    5ac4a9b3e7ee9_ThaiDress.png.5760a0b97f3a9afcb2ae5356ebb7f50f.png


     

    2nd from the left should be mandated for all females 16 - 40 with dispensation above 40 for those deemed suitable. 

  7. On 04/04/2018 at 6:04 AM, Cadbury said:

    So nationalism and cultivating a love of the history of Thailand is so important that free entry for those who go in fancy dress only lasts for a week. Similar to road safety programmes and bus inspections that only last for Songkran and Christmas/New Year.

    Thailand the Hub of Short Term Fixes.

    Problem is, there is never any fix, it's just a wet dream for those still capable. 

  8. 4 minutes ago, connda said:

    But the Land Transport Department responded Monday that those who take the joke too far and use them in real life face prosecution.

     

    No sense of humor at the top end of the food chain in this country.

    Thought they had a good sense of humour, laughing to themselves  for a couple of months while Mr piggy was sorting out his watch story. 

  9. 46 minutes ago, Arjen said:

    Yes, only the "swing type" check valves are always slighty leaking.

     

    This type will do better, bust must be mounted vertical, or there should be always some pressureon the outfeed side.

     

    spring-loaded-brass-check-valve.jpg

    Can be mounted in any orientation you want, up, down, sideways or arse over head to suit yourself as they are spring assisted. 

    • Like 2
  10. 7 hours ago, chang1 said:

    Done some googling and the figures are truly shocking. Our NHS has similar problems. There doesn't seem to be a definition of unnecessary which means the numbers can be twisted and exaggerated which ever way suits the researcher. 

    Back to your original comment - there is no similarity between this kind of voodoo and western medicine even if the outcome is the same. If you needed treatment, would you go to a hospital staffed with witch doctors like these 5 or a modern western hospital? 

    I would go during a doctors or nurses industrial strike as the number of deaths seem to drop during strike action (google for data). 

  11. 38 minutes ago, GroveHillWanderer said:

    Again, there are two different issues here that are continually being conflated - dog population control and rabies control. If you're talking about rabies control then the entirely practical ideas, being promoted by all the organisations with the most actual experience of real-world efforts to control this disease, not only can be applied but are being and have been applied successfully and cost-effectively throughout the world.

     

    Well-coordinated efforts to achieve 70% vaccination rates of dogs have repeatedly proven to be the most effective means of controlling canine rabies. Successful campaigns using mass canine vaccination have been carried out in dozens of countries around the world. 

     

    I've mentioned this before but the best example of this is in the Americas. Up until the 1980's, hundreds of people there died every year from rabies. In 1983, coordinated mass canine vaccination campaigns were started. As of 2013, according to the Pan-American Health Organization (PAHO) website, dog-mediated human rabies cases had been reduced by 95% due to these efforts.

     

    PAHO website

    Heard it all before, however you hit it right on the head "responsible dog ownernship", never happen in Thailand so it's a waste of breath. You forgot to add, stop feeding soi dogs. 

    • Like 1
  12. 6 hours ago, blackcab said:

     

    What do you think about how the Malays do things? It seems quite practical:

     

    https://www.thestar.com.my/news/nation/2018/01/02/ops-targeting-stray-and-free-roaming-dogs-in-sarawak-to-start-on-jan-3/

    The stock standard answer will be - "it doesn't work, or similar response" 

    It's much easier to sit there doing nothing, promoting worderful ideas that won't be, can't be applied than actually doing something. 

  13. 19 minutes ago, Airbagwill said:

    You seem to have missed the point.You need to ask WHY Thailand as such a large roaming dog population. 

     

    to ensure long term reduction with minimum interference the root environmental causes...food, water and shelter have to be shut down.

     

    ..The capture neuter and return is used before any rabies scare and has a permanent long term view...to reduce any dog population to manageable proportions.

    As has repeatedly be demonstrated....culling won't work, the root cause as you say is n oversized dog population.You have to address the reasons for this or after a cull overpopulation just returns.

    It is impossible to eliminate ALL dogs....If you did they would be replaced by the next species...cats or rats.

    As part of the CVNR program the neutering of dogs brings the birth rate below the death rate, and the population reduces.

    But

    This is what has been done in the west...not culls.

    Once a population is down to manageable numbers then normalcontrols can be implemented.

    There is no overnight solution.... it requires authorities to come to terms with their responsibilities far exceeding just killing dogs...it requires garbage collection and for the dogs a long term project such as the one underway in BKK.

     

     

    The vast majority of posters fully understand WHY, and also are aware that stopping the dumping of more dogs on the street and stop feeding them (even you can't disagree with that point) combined with a structured ongoing plan of eradication is a step forward. 

  14. 10 hours ago, GroveHillWanderer said:

    It has never been shown to work on its own although it can be used as an adjunct to the only proven and most effective method of control - vaccination. There are various reasons for this - several of which have been mentioned more than once on here. Anyway, as Airbagwill says, all the major organisations involved in Rabies Control efforts (and various other medical or scientific journals) have published articles confirming this info.

     

    Probably one of the best explanations of the scientific principle of why culling alone doesn't work and vaccination does, is in a British Medical Journal article which states as follows:

     

     

    To get the full info and become aware of all the reasons why culling alone doesn't work, it's probably best just to read the source articles. Here's a list of links:

     

    http://www.missionrabies.com/resources/team-area/faq/

     

    http://www.who.int/rabies/dogs/en/

     

    http://veterinaryrecord.bmj.com/content/175/8/188

     

    The BMJ article is probably the best one to read, to get a full and complete picture although it is slightly technical in places and a bit long. 

     

    Rabies is only 1 problem of the overall problem of being far too many dogs roaming the streets of Thailand.

    Think you will find the majority of posters promoting a major and ongoing cull are thinking beyond the rabies problem and viewing it as only one of the problems.  

     

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