• OT: light altering paint for greenhouses could help lengthen fruit grow

    From Jan Panteltje@21:1/5 to All on Sun Nov 24 06:43:45 2024
    Light-altering paint for greenhouses could help lengthen the fruit growing season in the UK
    https://www.sciencedaily.com/releases/2024/11/241120122018.htm
    Summary:
    New spray developed by scientists could help boost UK farming and increase the UK's food security.

    Paper:
    https://onlinelibrary.wiley.com/doi/10.1002/admt.202400977

    stuff they use, quote:
    '
    In this paper, we develop an approach based on readily prepared and cheap
    Eu3+-containing polyoxotitanium cages (Eu-POTs) which, we show,
    possess the necessary design features listed before.
    Having established the ground rules for selective modification,
    we introduce a working prototype luminophore with high PLQY (>60%)
    which is soluble in a range of commercial plastics, including water-based
    acrylic paint that can be sprayed onto conventional glass greenhouses
    in an agricultural environment.
    '

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Martin Brown@21:1/5 to Jan Panteltje on Sun Nov 24 09:29:51 2024
    On 24/11/2024 06:43, Jan Panteltje wrote:
    Light-altering paint for greenhouses could help lengthen the fruit growing season in the UK
    https://www.sciencedaily.com/releases/2024/11/241120122018.htm
    Summary:
    New spray developed by scientists could help boost UK farming and increase the UK's food security.

    Paper:
    https://onlinelibrary.wiley.com/doi/10.1002/admt.202400977

    stuff they use, quote:
    '
    In this paper, we develop an approach based on readily prepared and cheap
    Eu3+-containing polyoxotitanium cages (Eu-POTs) which, we show,
    possess the necessary design features listed before.
    Having established the ground rules for selective modification,
    we introduce a working prototype luminophore with high PLQY (>60%)
    which is soluble in a range of commercial plastics, including water-based
    acrylic paint that can be sprayed onto conventional glass greenhouses
    in an agricultural environment.

    There are other much older organic dye technologies that will down
    convert blue photons to red like dayglo dyes Eosin, Rhodamine, Rubrene
    etc (although some of them are a bit carcingenic others are quite
    harmless). They form the basis for pumped tunable dye lasers.

    Plants are green because the very first photosynthetic life on earth had already grabbed the low hanging fruit of energetic green and blue
    photons using rhodopsin based proton pumps and red photosynthetic
    pigments. You can still see them living in rock pool puddles today.

    https://en.wikipedia.org/wiki/Microbial_rhodopsin

    And a closely related pigment lives on in our eyes in various slightly different forms giving us colour vision.

    --
    Martin Brown

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Bill Sloman@21:1/5 to Jan Panteltje on Sun Nov 24 20:21:17 2024
    On 24/11/2024 5:43 pm, Jan Panteltje wrote:
    Light-altering paint for greenhouses could help lengthen the fruit growing season in the UK
    https://www.sciencedaily.com/releases/2024/11/241120122018.htm
    Summary:
    New spray developed by scientists could help boost UK farming and increase the UK's food security.

    Paper:
    https://onlinelibrary.wiley.com/doi/10.1002/admt.202400977

    stuff they use, quote:
    '
    In this paper, we develop an approach based on readily prepared and cheap
    Eu3+-containing polyoxotitanium cages (Eu-POTs) which, we show,
    possess the necessary design features listed before.
    Having established the ground rules for selective modification,
    we introduce a working prototype luminophore with high PLQY (>60%)
    which is soluble in a range of commercial plastics, including water-based
    acrylic paint that can be sprayed onto conventional glass greenhouses
    in an agricultural environment.

    What you needed to say - and didn't - was that the luminophore absorbs wavelengths shorter than red, and re-emits the energy at a wavvelength
    in the red which is efficiently absorbed by plant chlorophyll.

    The article talks about UV light - though there's not a lot of that in sunlight, and even less in English sunlight - so it's not exactly helpful.

    --
    Bill Sloman, Sydney
    '

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jan Panteltje@21:1/5 to bill.sloman@ieee.org on Sun Nov 24 13:18:10 2024
    On a sunny day (Sun, 24 Nov 2024 20:21:17 +1100) it happened Bill Sloman <bill.sloman@ieee.org> wrote in <vhur6f$2618b$1@dont-email.me>:

    On 24/11/2024 5:43 pm, Jan Panteltje wrote:
    Light-altering paint for greenhouses could help lengthen the fruit growing season in the UK
    https://www.sciencedaily.com/releases/2024/11/241120122018.htm
    Summary:
    New spray developed by scientists could help boost UK farming and increase the UK's food security.

    Paper:
    https://onlinelibrary.wiley.com/doi/10.1002/admt.202400977

    stuff they use, quote:
    '
    In this paper, we develop an approach based on readily prepared and cheap >> Eu3+-containing polyoxotitanium cages (Eu-POTs) which, we show,
    possess the necessary design features listed before.
    Having established the ground rules for selective modification,
    we introduce a working prototype luminophore with high PLQY (>60%)
    which is soluble in a range of commercial plastics, including water-based >> acrylic paint that can be sprayed onto conventional glass greenhouses
    in an agricultural environment.

    What you needed to say - and didn't - was that the luminophore absorbs >wavelengths shorter than red, and re-emits the energy at a wavvelength
    in the red which is efficiently absorbed by plant chlorophyll.

    The article talks about UV light - though there's not a lot of that in >sunlight, and even less in English sunlight - so it's not exactly helpful.

    Not only about UV.
    As to UV, I just tried an UV flashlight (as for testing bank notes) on the green emitting tape I have,
    it works, lights up green for some time!
    https://www.ebay.com/itm/385636467738
    :-)

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From john larkin@21:1/5 to All on Sun Nov 24 09:35:43 2024
    On Sun, 24 Nov 2024 06:43:45 GMT, Jan Panteltje <alien@comet.invalid>
    wrote:

    Light-altering paint for greenhouses could help lengthen the fruit growing season in the UK
    https://www.sciencedaily.com/releases/2024/11/241120122018.htm
    Summary:
    New spray developed by scientists could help boost UK farming and increase the UK's food security.

    Paper:
    https://onlinelibrary.wiley.com/doi/10.1002/admt.202400977

    stuff they use, quote:
    '
    In this paper, we develop an approach based on readily prepared and cheap Eu3+-containing polyoxotitanium cages (Eu-POTs) which, we show,
    possess the necessary design features listed before.
    Having established the ground rules for selective modification,
    we introduce a working prototype luminophore with high PLQY (>60%)
    which is soluble in a range of commercial plastics, including water-based acrylic paint that can be sprayed onto conventional glass greenhouses
    in an agricultural environment.
    '

    Greenhouses will never grow much of the world's needed food.

    But things keep getting better:

    https://ourworldindata.org/grapher/index-of-cereal-production-yield-and-land-use

    More CO2 is part of the reason, which is why people pump CO2 into
    greenhouses.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Cursitor Doom@21:1/5 to john larkin on Sun Nov 24 17:54:21 2024
    On Sun, 24 Nov 2024 09:35:43 -0800, john larkin wrote:

    On Sun, 24 Nov 2024 06:43:45 GMT, Jan Panteltje <alien@comet.invalid>
    wrote:

    Light-altering paint for greenhouses could help lengthen the fruit
    growing season in the UK
    https://www.sciencedaily.com/releases/2024/11/241120122018.htm
    Summary:
    New spray developed by scientists could help boost UK farming and
    increase the UK's food security.

    Paper:
    https://onlinelibrary.wiley.com/doi/10.1002/admt.202400977

    stuff they use, quote:
    '
    In this paper, we develop an approach based on readily prepared and
    cheap Eu3+-containing polyoxotitanium cages (Eu-POTs) which, we show,
    possess the necessary design features listed before.
    Having established the ground rules for selective modification,
    we introduce a working prototype luminophore with high PLQY (>60%)
    which is soluble in a range of commercial plastics, including
    water-based acrylic paint that can be sprayed onto conventional glass
    greenhouses in an agricultural environment.
    '

    Greenhouses will never grow much of the world's needed food.

    But things keep getting better:

    https://ourworldindata.org/grapher/index-of-cereal-production-yield-and-
    land-use

    More CO2 is part of the reason, which is why people pump CO2 into greenhouses.

    <cough>
    My dear fellow, did you not suggest only a short time ago that we both
    ignore this OP's off-topic nonsense? Just a little reminder....

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Jan Panteltje@21:1/5 to JL@gct.com on Mon Nov 25 05:52:28 2024
    On a sunny day (Sun, 24 Nov 2024 09:35:43 -0800) it happened john larkin <JL@gct.com> wrote in <uko6kjh1ps8s5qsc10ttaoni1lgh4dk8p6@4ax.com>:

    On Sun, 24 Nov 2024 06:43:45 GMT, Jan Panteltje <alien@comet.invalid>
    wrote:

    Light-altering paint for greenhouses could help lengthen the fruit growing season in the UK
    https://www.sciencedaily.com/releases/2024/11/241120122018.htm
    Summary:
    New spray developed by scientists could help boost UK farming and increase the UK's food security.

    Paper:
    https://onlinelibrary.wiley.com/doi/10.1002/admt.202400977

    stuff they use, quote:
    '
    In this paper, we develop an approach based on readily prepared and cheap
    Eu3+-containing polyoxotitanium cages (Eu-POTs) which, we show,
    possess the necessary design features listed before.
    Having established the ground rules for selective modification,
    we introduce a working prototype luminophore with high PLQY (>60%)
    which is soluble in a range of commercial plastics, including water-based
    acrylic paint that can be sprayed onto conventional glass greenhouses
    in an agricultural environment.
    '

    Greenhouses will never grow much of the world's needed food.

    But things keep getting better:

    https://ourworldindata.org/grapher/index-of-cereal-production-yield-and-land-use

    More CO2 is part of the reason, which is why people pump CO2 into >greenhouses.


    I like tomatos
    https://revolve.media/features/navigating-spains-plastic-sea

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From john larkin@21:1/5 to cd999666@notformail.com on Mon Nov 25 07:55:32 2024
    On Sun, 24 Nov 2024 17:54:21 -0000 (UTC), Cursitor Doom <cd999666@notformail.com> wrote:

    On Sun, 24 Nov 2024 09:35:43 -0800, john larkin wrote:

    On Sun, 24 Nov 2024 06:43:45 GMT, Jan Panteltje <alien@comet.invalid>
    wrote:

    Light-altering paint for greenhouses could help lengthen the fruit >>>growing season in the UK
    https://www.sciencedaily.com/releases/2024/11/241120122018.htm
    Summary:
    New spray developed by scientists could help boost UK farming and
    increase the UK's food security.

    Paper:
    https://onlinelibrary.wiley.com/doi/10.1002/admt.202400977

    stuff they use, quote:
    '
    In this paper, we develop an approach based on readily prepared and
    cheap Eu3+-containing polyoxotitanium cages (Eu-POTs) which, we show,
    possess the necessary design features listed before.
    Having established the ground rules for selective modification,
    we introduce a working prototype luminophore with high PLQY (>60%)
    which is soluble in a range of commercial plastics, including
    water-based acrylic paint that can be sprayed onto conventional glass
    greenhouses in an agricultural environment.
    '

    Greenhouses will never grow much of the world's needed food.

    But things keep getting better:

    https://ourworldindata.org/grapher/index-of-cereal-production-yield-and- >land-use

    More CO2 is part of the reason, which is why people pump CO2 into
    greenhouses.

    <cough>
    My dear fellow, did you not suggest only a short time ago that we both
    ignore this OP's off-topic nonsense? Just a little reminder....

    Well, he posted someting interesting, in un-damaged English. Fooled
    me!

    A little OT is OK with me now and then, if it's arguably interesting,
    science related, and not obnoxious.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)