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@benainouna

53

“The good thing about science is that it's true whether or not you believe in it.” ― Neil deGrasse Tyson

steemit.com/@benainouna
VOTING POWER100.00%
DOWNVOTE POWER100.00%
RESOURCE CREDITS100.00%
REPUTATION PROGRESS6.65%
Net Worth
5.020USD
STEEM
0.004STEEM
SBD
0.990SBD
Own SP
84.148SP

Detailed Balance

STEEM
balance
0.002STEEM
market_balance
0.000STEEM
savings_balance
0.002STEEM
reward_steem_balance
0.000STEEM
STEEM POWER
Own SP
84.148SP
Delegated Out
0.000SP
Delegation In
0.000SP
Effective Power
84.148SP
Reward SP (pending)
0.000SP
SBD
sbd_balance
0.990SBD
sbd_conversions
0.000SBD
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0.000SBD
savings_sbd_balance
0.000SBD
reward_sbd_balance
0.000SBD
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Account Info

namebenainouna
id330271
rank19,520
reputation1313709401045
created2017-08-23T18:39:21
recovery_accountsteem
proxyNone
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last_root_post2021-02-20T16:55:57
last_vote_time2021-02-20T16:58:54
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vesting_shares137028.592641 VESTS
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vesting_withdraw_rate0.000000 VESTS
next_vesting_withdrawal1969-12-31T23:59:59
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last_account_recovery1970-01-01T00:00:00
reset_accountnull
last_owner_update1970-01-01T00:00:00
last_account_update2019-06-25T14:45:54
minedNo
sbd_seconds0
sbd_last_interest_payment2021-11-12T12:47:09
savings_sbd_last_interest_payment2018-04-13T21:05:18
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Withdraw Routes

IncomingOutgoing
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From Date
To Date
steemeggsent 0.001 STEEM to @benainouna- "Accumulate free upvotes on your posts every 6 hours! All you need to do is vote our witness account -> se-witness as one of your 30 witness votes. -> See actual rewards not just 0.001 every day. http..."
2023/01/11 23:26:36
fromsteemegg
tobenainouna
amount0.001 STEEM
memoAccumulate free upvotes on your posts every 6 hours! All you need to do is vote our witness account -> se-witness as one of your 30 witness votes. -> See actual rewards not just 0.001 every day. https://steemlogin.com/sign/account-witness-vote?witness=se-witness&approve=1
Transaction InfoBlock #71102555/Trx ab83cd7006f480bedc6f0b0763dc41baf38f5c8e
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      "amount": "0.001 STEEM",
      "memo": "Accumulate free upvotes on your posts every 6 hours! All you need to do is vote our witness account -> se-witness as one of your 30 witness votes. ->  See actual rewards not just 0.001 every day. https://steemlogin.com/sign/account-witness-vote?witness=se-witness&approve=1"
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benainounacustom json: notify
2022/02/11 15:28:36
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Transaction InfoBlock #61531007/Trx d05f7184d43d15777dfebf236b15d41e12f9ec3c
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benainounaclaimed reward balance: 0.007 SBD, 0.028 SP
2021/11/12 12:47:09
accountbenainouna
reward steem0.000 STEEM
reward sbd0.007 SBD
reward vests45.482028 VESTS
Transaction InfoBlock #58933112/Trx cd2d47b536e385b1b618063a93c461798265bb4c
View Raw JSON Data
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benainounareceived 0.007 SBD, 0.024 SP author reward for @benainouna / rare-disseminated-elements-part1
2021/02/27 16:55:57
authorbenainouna
permlinkrare-disseminated-elements-part1
sbd payout0.007 SBD
steem payout0.000 STEEM
vesting payout39.796179 VESTS
Transaction InfoBlock #51580284/Virtual Operation #3
View Raw JSON Data
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2021/02/26 19:33:48
curatorbenainouna
reward3.790468 VESTS
comment authorcarlos84
comment permlinknew-technologies-used-by-weatherford-petroleum-company-in-its-latest-offshore-contracts
Transaction InfoBlock #51554923/Virtual Operation #95
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benainounareceived 0.001 SP curation reward for @emiliomoron / the-risk-of-nanoparticles
2021/02/26 01:52:39
curatorbenainouna
reward1.895381 VESTS
comment authoremiliomoron
comment permlinkthe-risk-of-nanoparticles
Transaction InfoBlock #51533935/Virtual Operation #88
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2021/02/21 10:46:00
votertreskiev
authorbenainouna
permlinkrare-disseminated-elements-part1
weight-1000 (-10.00%)
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2021/02/21 01:13:42
voterancolie
authorbenainouna
permlinkrare-disseminated-elements-part1
weight10000 (100.00%)
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benainounacustom json: notify
2021/02/20 22:55:03
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benainounacustom json: notify
2021/02/20 22:24:48
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Transaction InfoBlock #51388383/Trx 0e02cd3093a9770217aa03dc810cea9cd95edf01
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2021/02/20 22:24:42
parent author
parent permlinkhive-175254
authorbenainouna
permlinkrare-disseminated-elements-part1
titleRare disseminated elements -part1-
bodythe earth's crust is made up of dozens of chemical elements, only fifteen are fairly widespread and are found in almost all rocks, as for the others, they are rarer. Some of these constitute large concentrations in the form of ores. The others, such as gold and platinum, the proportion of which in the crust of the earth is minimal, give almost imperceptible parcels of native metal and very rarely larger nuggets. However rare they are, they are found in the state of independent minerals, sometimes invisible to the naked eye, but always clean. There are also scarce elements which do not constitute separate minerals. Their compounds are found dissolved in others, more common as salt and sugar are in water, without knowing whether it is pure or not. The chemical elements have for a long time wandered through molten masses and solutions, before meeting in rocks and veins in the state of stable combinations. during their travels they have undergone many transformations, only those who are very alike make the whole trip side by side. Plus grande est la similitude des propriétés de deux éléments, plus il est difficile de trouver une réaction chimique qui les dissocie. il y a des éléments rares qui, au lieu de se dégager sous l'aspect de minéraux à part, se dispersent dans de nombreux minéraux composés d'autres éléments; c'est pourquoi on les appelle les éléments disséminés. https://cdn.pixabay.com/photo/2014/05/16/16/06/pyrite-345637_960_720.jpg [Pixabay](https://pixabay.com/fr/photos/pyrite-pyrites-min%C3%A9raux-sulfure-345637/) What exactly? they are not spoken of in everyday life, nor even at school, although the development of technology makes their use more and more common. It is gallium, indium, thallium, cadmium, germanium, selenium, tellurium, rhenium, rubidium, radium, scandium, hafnium. We have only cited the most typical, we could extend the list further if necessary. - Let's take a look at where and in what state these elements are found in nature, how man has learned to detect them in other minerals and to use them. A yellow-brown stone, the fractures of which often present brilliant facets, absolutely regular, it is quite heavy, but hardly has the appearance of an ore, although it is one. It is blende or sphalerite. https://cdn.pixabay.com/photo/2015/02/20/11/19/mineral-643082_960_720.jpg [Pixabay](https://pixabay.com/fr/photos/min%C3%A9rale-nature-cristal-sphal%C3%A9rite-643082/) The simplicity of the blende is fictitious, if the given sample is yellow-brown, others may be brown, dark brown, blackish, even black with a completely metallic luster. The dark color of the blende is due to the iron sulphide dissolved in its mass: that which does not contain it is almost colorless, greenish or light yellow. The more iron there is, the darker the blende, so the color here is a sure indication of iron. X-ray examination of the interior structure of the blende reveals that the particles of zinc and sulfur are arranged therein such that each atom of zinc is surrounded by four atoms of sulfur, and vice versa. In the blende we meet cadmium, gallium, indium, thallium, germanium .... zinc is, as we see, a very welcoming host. But sulfur is also capable, although to a lesser extent, of harboring rare elements: selenium and tellurium.
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Transaction InfoBlock #51388381/Trx fe2aaebb193946b23af5e93c8ca720929b12d62b
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      "title": "Rare disseminated elements -part1-",
      "body": "the earth's crust is made up of dozens of chemical elements, only fifteen are fairly widespread and are found in almost all rocks, as for the others, they are rarer.\nSome of these constitute large concentrations in the form of ores. The others, such as gold and platinum, the proportion of which in the crust of the earth is minimal, give almost imperceptible parcels of native metal and very rarely larger nuggets. However rare they are, they are found in the state of independent minerals, sometimes invisible to the naked eye, but always clean. There are also scarce elements which do not constitute separate minerals. Their compounds are found dissolved in others, more common as salt and sugar are in water, without knowing whether it is pure or not.\nThe chemical elements have for a long time wandered through molten masses and solutions, before meeting in rocks and veins in the state of stable combinations. during their travels they have undergone many transformations, only those who are very alike make the whole trip side by side.\nPlus grande est la similitude des propriétés de deux éléments, plus il est difficile de trouver une réaction chimique qui les dissocie. il y a des éléments rares qui, au lieu de se dégager sous l'aspect de minéraux à part, se dispersent dans de nombreux minéraux composés d'autres éléments; c'est pourquoi on les appelle les éléments disséminés.\nhttps://cdn.pixabay.com/photo/2014/05/16/16/06/pyrite-345637_960_720.jpg\n[Pixabay](https://pixabay.com/fr/photos/pyrite-pyrites-min%C3%A9raux-sulfure-345637/)\n\nWhat exactly? they are not spoken of in everyday life, nor even at school, although the development of technology makes their use more and more common. It is gallium, indium, thallium, cadmium, germanium, selenium, tellurium, rhenium, rubidium, radium, scandium, hafnium. We have only cited the most typical, we could extend the list further if necessary.\n\n- Let's take a look at where and in what state these elements are found in nature, how man has learned to detect them in other minerals and to use them. \nA yellow-brown stone, the fractures of which often present brilliant facets, absolutely regular, it is quite heavy, but hardly has the appearance of an ore, although it is one. It is blende or sphalerite.\nhttps://cdn.pixabay.com/photo/2015/02/20/11/19/mineral-643082_960_720.jpg\n[Pixabay](https://pixabay.com/fr/photos/min%C3%A9rale-nature-cristal-sphal%C3%A9rite-643082/)\nThe simplicity of the blende is fictitious, if the given sample is yellow-brown, others may be brown, dark brown, blackish, even black with a completely metallic luster.\nThe dark color of the blende is due to the iron sulphide dissolved in its mass: that which does not contain it is almost colorless, greenish or light yellow. The more iron there is, the darker the blende, so the color here is a sure indication of iron. X-ray examination of the interior structure of the blende reveals that the particles of zinc and sulfur are arranged therein such that each atom of zinc is surrounded by four atoms of sulfur, and vice versa.\nIn the blende we meet cadmium, gallium, indium, thallium, germanium .... zinc is, as we see, a very welcoming host. But sulfur is also capable, although to a lesser extent, of harboring rare elements: selenium and tellurium.",
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2021/02/20 22:05:42
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2021/02/20 17:17:30
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2021/02/20 16:58:54
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2021/02/20 16:58:45
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authorbenainouna
permlinkrare-disseminated-elements-part1
titleRare disseminated elements -part1-
bodythe earth's crust is made up of dozens of chemical elements, only fifteen are fairly widespread and are found in almost all rocks, as for the others, they are rarer. Some of these constitute large concentrations in the form of ores. The others, such as gold and platinum, the proportion of which in the crust of the earth is minimal, give almost imperceptible parcels of native metal and very rarely larger nuggets. However rare they are, they are found in the state of independent minerals, sometimes invisible to the naked eye, but always clean. There are also scarce elements which do not constitute separate minerals. Their compounds are found dissolved in others, more common as salt and sugar are in water, without knowing whether it is pure or not. The chemical elements have for a long time wandered through molten masses and solutions, before meeting in rocks and veins in the state of stable combinations. during their travels they have undergone many transformations, only those who are very alike make the whole trip side by side. Plus grande est la similitude des propriétés de deux éléments, plus il est difficile de trouver une réaction chimique qui les dissocie. il y a des éléments rares qui, au lieu de se dégager sous l'aspect de minéraux à part, se dispersent dans de nombreux minéraux composés d'autres éléments; c'est pourquoi on les appelle les éléments disséminés. https://cdn.pixabay.com/photo/2014/05/16/16/06/pyrite-345637_960_720.jpg [Pixabay](https://pixabay.com/fr/photos/pyrite-pyrites-min%C3%A9raux-sulfure-345637/) What exactly? they are not spoken of in everyday life, nor even at school, although the development of technology makes their use more and more common. It is gallium, indium, thallium, cadmium, germanium, selenium, tellurium, rhenium, rubidium, radium, scandium, hafnium. We have only cited the most typical, we could extend the list further if necessary. - Let's take a look at where and in what state these elements are found in nature, how man has learned to detect them in other minerals and to use them. A yellow-brown stone, the fractures of which often present brilliant facets, absolutely regular, it is quite heavy, but hardly has the appearance of an ore, although it is one. It is blende or sphalerite. https://cdn.pixabay.com/photo/2015/02/20/11/19/mineral-643082_960_720.jpg [Pixabay](https://pixabay.com/fr/photos/min%C3%A9rale-nature-cristal-sphal%C3%A9rite-643082/) The simplicity of the blende is fictitious, if the given sample is yellow-brown, others may be brown, dark brown, blackish, even black with a completely metallic luster. The dark color of the blende is due to the iron sulphide dissolved in its mass: that which does not contain it is almost colorless, greenish or light yellow. The more iron there is, the darker the blende, so the color here is a sure indication of iron. X-ray examination of the interior structure of the blende reveals that the particles of zinc and sulfur are arranged therein such that each atom of zinc is surrounded by four atoms of sulfur, and vice versa. In the blende we meet cadmium, gallium, indium, thallium, germanium .... zinc is, as we see, a very welcoming host. But sulfur is also capable, although to a lesser extent, of harboring rare elements: selenium and tellurium.
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      "author": "benainouna",
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      "title": "Rare disseminated elements -part1-",
      "body": "the earth's crust is made up of dozens of chemical elements, only fifteen are fairly widespread and are found in almost all rocks, as for the others, they are rarer.\nSome of these constitute large concentrations in the form of ores. The others, such as gold and platinum, the proportion of which in the crust of the earth is minimal, give almost imperceptible parcels of native metal and very rarely larger nuggets. However rare they are, they are found in the state of independent minerals, sometimes invisible to the naked eye, but always clean. There are also scarce elements which do not constitute separate minerals. Their compounds are found dissolved in others, more common as salt and sugar are in water, without knowing whether it is pure or not.\nThe chemical elements have for a long time wandered through molten masses and solutions, before meeting in rocks and veins in the state of stable combinations. during their travels they have undergone many transformations, only those who are very alike make the whole trip side by side.\nPlus grande est la similitude des propriétés de deux éléments, plus il est difficile de trouver une réaction chimique qui les dissocie. il y a des éléments rares qui, au lieu de se dégager sous l'aspect de minéraux à part, se dispersent dans de nombreux minéraux composés d'autres éléments; c'est pourquoi on les appelle les éléments disséminés.\nhttps://cdn.pixabay.com/photo/2014/05/16/16/06/pyrite-345637_960_720.jpg\n[Pixabay](https://pixabay.com/fr/photos/pyrite-pyrites-min%C3%A9raux-sulfure-345637/)\n\nWhat exactly? they are not spoken of in everyday life, nor even at school, although the development of technology makes their use more and more common. It is gallium, indium, thallium, cadmium, germanium, selenium, tellurium, rhenium, rubidium, radium, scandium, hafnium. We have only cited the most typical, we could extend the list further if necessary.\n\n- Let's take a look at where and in what state these elements are found in nature, how man has learned to detect them in other minerals and to use them. \nA yellow-brown stone, the fractures of which often present brilliant facets, absolutely regular, it is quite heavy, but hardly has the appearance of an ore, although it is one. It is blende or sphalerite.\nhttps://cdn.pixabay.com/photo/2015/02/20/11/19/mineral-643082_960_720.jpg\n[Pixabay](https://pixabay.com/fr/photos/min%C3%A9rale-nature-cristal-sphal%C3%A9rite-643082/)\nThe simplicity of the blende is fictitious, if the given sample is yellow-brown, others may be brown, dark brown, blackish, even black with a completely metallic luster.\nThe dark color of the blende is due to the iron sulphide dissolved in its mass: that which does not contain it is almost colorless, greenish or light yellow. The more iron there is, the darker the blende, so the color here is a sure indication of iron. X-ray examination of the interior structure of the blende reveals that the particles of zinc and sulfur are arranged therein such that each atom of zinc is surrounded by four atoms of sulfur, and vice versa.\nIn the blende we meet cadmium, gallium, indium, thallium, germanium .... zinc is, as we see, a very welcoming host. But sulfur is also capable, although to a lesser extent, of harboring rare elements: selenium and tellurium.",
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executive-boardsent 0.001 STEEM to @benainouna- "❗ Hello benainouna, great that you are using the STEEM blockchain. The Executive Board is publishing insider infos at https://discord.gg/KyBbmhh on how you will be earning the most coins. It's easy, j..."
2021/02/20 16:57:15
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memo❗ Hello benainouna, great that you are using the STEEM blockchain. The Executive Board is publishing insider infos at https://discord.gg/KyBbmhh on how you will be earning the most coins. It's easy, just follow the instructions. THE 1000X BOOSTER KEY is already waiting for you over there too. 😉 Warm regards, The Executive Board.
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2021/02/20 16:55:57
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authorbenainouna
permlinkrare-disseminated-elements-part1
titleRare disseminated elements -part1-
bodythe earth's crust is made up of dozens of chemical elements, only fifteen are fairly widespread and are found in almost all rocks, as for the others, they are rarer. Some of these constitute large concentrations in the form of ores. The others, such as gold and platinum, the proportion of which in the crust of the earth is minimal, give almost imperceptible parcels of native metal and very rarely larger nuggets. However rare they are, they are found in the state of independent minerals, sometimes invisible to the naked eye, but always clean. There are also scarce elements which do not constitute separate minerals. Their compounds are found dissolved in others, more common as salt and sugar are in water, without knowing whether it is pure or not. The chemical elements have for a long time wandered through molten masses and solutions, before meeting in rocks and veins in the state of stable combinations. during their travels they have undergone many transformations, only those who are very alike make the whole trip side by side. Plus grande est la similitude des propriétés de deux éléments, plus il est difficile de trouver une réaction chimique qui les dissocie. il y a des éléments rares qui, au lieu de se dégager sous l'aspect de minéraux à part, se dispersent dans de nombreux minéraux composés d'autres éléments; c'est pourquoi on les appelle les éléments disséminés. https://cdn.pixabay.com/photo/2014/05/16/16/06/pyrite-345637_960_720.jpg [Pixabay](https://pixabay.com/fr/photos/pyrite-pyrites-min%C3%A9raux-sulfure-345637/) What exactly? they are not spoken of in everyday life, nor even at school, although the development of technology makes their use more and more common. It is gallium, indium, thallium, cadmium, germanium, selenium, tellurium, rhenium, rubidium, radium, scandium, hafnium. We have only cited the most typical, we could extend the list further if necessary. - Let's take a look at where and in what state these elements are found in nature, how man has learned to detect them in other minerals and to use them. A yellow-brown stone, the fractures of which often present brilliant facets, absolutely regular, it is quite heavy, but hardly has the appearance of an ore, although it is one. It is blende or sphalerite. https://cdn.pixabay.com/photo/2015/02/20/11/19/mineral-643082_960_720.jpg [Pixabay](https://pixabay.com/fr/photos/min%C3%A9rale-nature-cristal-sphal%C3%A9rite-643082/) The simplicity of the blende is fictitious, if the given sample is yellow-brown, others may be brown, dark brown, blackish, even black with a completely metallic luster. The dark color of the blende is due to the iron sulphide dissolved in its mass: that which does not contain it is almost colorless, greenish or light yellow. The more iron there is, the darker the blende, so the color here is a sure indication of iron. X-ray examination of the interior structure of the blende reveals that the particles of zinc and sulfur are arranged therein such that each atom of zinc is surrounded by four atoms of sulfur, and vice versa. In the blende we meet cadmium, gallium, indium, thallium, germanium .... zinc is, as we see, a very welcoming host. But sulfur is also capable, although to a lesser extent, of harboring rare elements: selenium and tellurium.
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2021/02/20 15:55:48
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2021/02/20 15:21:06
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2021/02/20 15:14:00
voterbenainouna
authoremiliomoron
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2021/02/20 12:25:15
voterbenainouna
authoriptrucs
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benainounaclaimed reward balance: 0.017 SBD, 0.131 SP
2021/02/20 12:22:18
accountbenainouna
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benainounapowered up 0.067 STEEM to @benainouna
2021/02/20 12:21:48
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benainounapowered up 19.000 STEEM to @benainouna
2021/02/20 12:21:18
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blurtofficialsent 0.001 STEEM to @benainouna- "CONGRATS! You have a 1:1 BLURT AIRDROP of 24.638 BLURT and 51.548000 BLURT POWER waiting for you. Check out https://blurtwallet.com/@benainouna and https://blurt.blog/ TODAY!"
2020/12/15 20:42:48
fromblurtofficial
tobenainouna
amount0.001 STEEM
memoCONGRATS! You have a 1:1 BLURT AIRDROP of 24.638 BLURT and 51.548000 BLURT POWER waiting for you. Check out https://blurtwallet.com/@benainouna and https://blurt.blog/ TODAY!
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benainounacustom json: notify
2020/06/10 14:39:24
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benainounareceived 0.001 SP curation reward for @ancolie / reflexion
2020/04/29 01:50:06
curatorbenainouna
reward1.954416 VESTS
comment authorancolie
comment permlinkreflexion
Transaction InfoBlock #42931480/Virtual Operation #294
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benainounareceived 0.010 SBD, 0.079 SP author reward for @benainouna / portland-cement-manufacturing-process
2020/04/27 15:38:51
authorbenainouna
permlinkportland-cement-manufacturing-process
sbd payout0.010 SBD
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vesting payout129.001968 VESTS
Transaction InfoBlock #42891506/Virtual Operation #7
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benainounaupvoted (100.00%) @ancolie / reflexion
2020/04/22 10:16:00
voterbenainouna
authorancolie
permlinkreflexion
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2020/04/22 02:16:39
voterancolie
authorbenainouna
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2020/04/21 18:23:06
votercrevort
authorbenainouna
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2020/04/21 15:17:24
voterbenainouna
authordigitalgoldcoin
permlinkgold-s-unique-properties
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2020/04/21 11:33:00
voterfuicres
authorbenainouna
permlinkportland-cement-manufacturing-process
weight-1000 (-10.00%)
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2020/04/20 20:07:48
votercamillesteemer
authorbenainouna
permlinkportland-cement-manufacturing-process
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2020/04/20 17:13:21
votermendoza
authorbenainouna
permlinkportland-cement-manufacturing-process
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2020/04/20 17:03:36
votershares
authorbenainouna
permlinkportland-cement-manufacturing-process
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2020/04/20 17:03:12
voteryehey
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2020/04/20 16:32:00
voterfilipino
authorbenainouna
permlinkportland-cement-manufacturing-process
weight1000 (10.00%)
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2020/04/20 15:54:27
votertechken
authorbenainouna
permlinkportland-cement-manufacturing-process
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2020/04/20 15:54:03
voterteam
authorbenainouna
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2020/04/20 15:41:39
voterbenainouna
authorbenainouna
permlinkportland-cement-manufacturing-process
weight10000 (100.00%)
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2020/04/20 15:38:51
parent author
parent permlinksteemstem
authorbenainouna
permlinkportland-cement-manufacturing-process
titlePortland cement manufacturing process
bodyCement is a mixture of clay and limestone which is ground together and heated to a temperature of 1450 ° C, to obtain a powder with coherent properties which hardens in the presence of water on complex physico-chemical processes. Cement = 80 percent limestone + 20 percent clay. https://cdn.pixabay.com/photo/2015/03/03/04/59/construction-656922_960_720.jpg [Pixabay](https://pixabay.com/fr/photos/la-construction-en-b%C3%A9ton-m%C3%A9lange-656922/) The stages of portland cement production: - 1)Extraction and crushing: The limestone is extracted from mines which are often near the cement plant, while the clay is extracted using mechanical machines and transported to the cement plant. Before using the extracted raw material, the crushing process takes place on the extraction site itself to reduce the particle size of limestone and clay to 50 nm. ![image.png](https://cdn.steemitimages.com/DQmYpFMtu9CSoVcGYuo8tmPBAsCc3nr1X5mQ2Hc8kddge2w/image.png) [Pixabay](https://pixabay.com/fr/photos/carri%C3%A8re-machine-gravier-sable-4430879/) 2)Preparation of vintage: After crushing the raw material (Clay and limestone) and reducing its particle size, a mixture of 80% limestone and 20% clay is prepared by grinding them together to obtain a powder with a particle size less than 200 micrometers. - vintage composition: Calcium carbonate CaCO3: from 77 to 83 percent. Clay: Silica SiO2: 13 to 14 percent. Alumina Al2O3: from 02 to 04 percent. Ferric oxide: 1.5 to 05 percent. 3)Cooking: The raw obtained from the previous process is placed in a rotary oven whose length varies between 70 to 120m and 05m in diameter. Inside the oven, there is an inclined tube (03 to 04 degrees from the horizontal) which rotates on itself from 02 to 03 rpm. The cru advances and slides inside the internal walls of the oven which are covered by brick. The raw begins to agglomerate at a temperature of 1300 ° C, until the temperature reaches 1450 ° C, we get grains with a diameter of 0.5 to 04 cm called Clinker. The clinker cools quickly when it comes out of the oven to a temperature between 50 and 250 degrees Celsius to avoid strong crystallization. - Thermogravimetric analysis: at T = 100 ° C: evaporation of free water. a T = 500 ° C: Departure of chemically bound water. at T = 800 to 1000 ° C: Dissociation of limestone: CaCO3 ====== CaO + CO2 - a T = 1000 at 1450 ° C: Reaction between CaO and the clay elements (SiO2, Al2O3, Fe2O3). Cement notions: - Calcium oxide CaO == C Silicon oxide Si2O3 == S Alumina oxide Al2O3 == A Ferric oxide == F - At the start of the fusion, the oxides combine to form: Hydraulic silicates: 3CaO.SiO2 ==== C3S (50 to 70 percent of the clinker) 2CaO.SiO2 ==== C2S (10 to 30 percent of the clinker) Hydraulic aluminates: 3CaO.Al2O3 == C3A (02 to 15 percent of the clinker) 4CaO.Al2O3.Fe2O3 == C4AF (5 to 15 percent of the clinker) 4)Grinding: Since the diameter of the clinker grains is somewhat large when it comes out of the oven, it is ground to a size less than 80 picometers, after the addition of gypsum (CaSO4.2H2O) and other additions. This is called Portland cement. Clinker + gypsum ===== grinding ==== portland cement. ----------------------------------------------------------------------------------------------------------------------------------- Hydration, setting and hardening: - Hydration and setting: - The hydration process begins when adding water to the clinker, the properties of the paste obtained change over time with an increase in viscosity and heat generation. But before that, that is to say when the time has not advanced much, the dough is soft, which allows us to form it to obtain the desired shape. When the mixture hardens and the viscosity begins to increase, it is said to set. - Several factors affect this process: The more advanced the grinding process, the shorter the setting time. The setting stops at a temperature of 0 ° C, and the higher the temperature, the faster the setting: at 02 ° C: 6 p.m. at 2 ° C: 3h30min at 35 ° C: 30min In addition, the setting slows down if there is an excess of water or if the water contains organic matter. Hardening: - This stage occurs after setting, and it can last from 28 days to several months, during which the mechanical strength of the cement will continue to increase. Use of additions in the manufacture of cement: - Cement production is a very expensive and polluting process that requires large amounts of water. Consequently, mineral additions are added to facilitate the production process and obtain a better quality of the product and also to reduce pollution and the cost of production. 1)Technical advantages: The additions reduce the need for water, thus improving the resistance to chemical attack and the mechanical resistance of the product (Example: resistance to cracking). ![image.png](https://cdn.steemitimages.com/DQmTekMK3PKKvv8nPdf5Gofs2FyoFkqBdFkdACLeJtw1y18/image.png) [Pixabay](https://pixabay.com/fr/photos/le-crack-mur-b%C3%A9ton-texture-pierre-695010/) 2)Ecological advantages: Large amounts of carbon dioxide CO2 are emitted during the cement production process (for 1 ton of cement === 1 ton of CO2 emitted), therefore, mineral additions are added to reduce these emissions. ![image.png](https://cdn.steemitimages.com/DQmcN3rNWxcb7VYGjUfeyv28HfbJ2xXgXqo1He7BuDv4PdT/image.png) [Pixabay](https://pixabay.com/fr/photos/la-pollution-usine-l-industrie-2575166/) 3)Economic advantages: Cement production consumes a lot of energy and therefore a high cost, and therefore additives are added to reduce energy needs and production costs. - Examples of some mineral additions: - Pouzzolan: A silicon rock of volcanic origin, gives birth to new compounds which are stable, sparingly soluble in water, weakly agglomerated. - Silica smoke: A byproduct of silicon manufacturing, Advantage: make a very reactive product. Sources: [Ciment Portland — Wikipédia](https://fr.wikipedia.org/wiki/Ciment_Portland) [Fabrication du ciment | lafarge.fr](https://www.lafarge.fr/fabrication-du-ciment) [Fabrication du ciment. Processus de fabrication du ciment ](https://www.febelcem.be/fr/ciment-applications/fabrication-du-ciment/) [Clinker — Wikipédia](https://fr.wikipedia.org/wiki/Clinker) [Béton à une faible teneur en clinker](https://www.cbr.be/fr/beton-faible-en-clinker) [Liant hydraulique — Wikipédia](https://fr.wikipedia.org/wiki/Liant_hydraulique) [CIMENT, Prise et durcissement du ciment - Encyclopædia](https://www.universalis.fr/encyclopedie/ciment/3-prise-et-durcissement-du-ciment/) [Etude physicochimique du ciment ](https://www.memoireonline.com/02/13/7021/m_Etude-physicochimique-du-ciment0.html)
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Transaction InfoBlock #42695312/Trx 968a42906106b4f532dd392b9d3a35e10bd719f4
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      "author": "benainouna",
      "permlink": "portland-cement-manufacturing-process",
      "title": "Portland cement manufacturing process",
      "body": "Cement is a mixture of clay and limestone which is ground together and heated to a temperature of 1450 ° C, to obtain a powder with coherent properties which hardens in the presence of water on complex physico-chemical processes.\nCement = 80 percent limestone + 20 percent clay.\nhttps://cdn.pixabay.com/photo/2015/03/03/04/59/construction-656922_960_720.jpg\n[Pixabay](https://pixabay.com/fr/photos/la-construction-en-b%C3%A9ton-m%C3%A9lange-656922/)\n\nThe stages of portland cement production:\n-\n\n1)Extraction and crushing:\nThe limestone is extracted from mines which are often near the cement plant, while the clay is extracted using mechanical machines and transported to the cement plant.\nBefore using the extracted raw material, the crushing process takes place on the extraction site itself to reduce the particle size of limestone and clay to 50 nm.\n\n![image.png](https://cdn.steemitimages.com/DQmYpFMtu9CSoVcGYuo8tmPBAsCc3nr1X5mQ2Hc8kddge2w/image.png)\n[Pixabay](https://pixabay.com/fr/photos/carri%C3%A8re-machine-gravier-sable-4430879/)\n\n2)Preparation of vintage:\nAfter crushing the raw material (Clay and limestone) and reducing its particle size, a mixture of 80% limestone and 20% clay is prepared by grinding them together to obtain a powder with a particle size less than 200 micrometers.\n- vintage composition:\nCalcium carbonate CaCO3: from 77 to 83 percent.\nClay:\nSilica SiO2: 13 to 14 percent.\nAlumina Al2O3: from 02 to 04 percent.\nFerric oxide: 1.5 to 05 percent.\n\n3)Cooking:\nThe raw obtained from the previous process is placed in a rotary oven whose length varies between 70 to 120m and 05m in diameter. Inside the oven, there is an inclined tube (03 to 04 degrees from the horizontal) which rotates on itself from 02 to 03 rpm.\nThe cru advances and slides inside the internal walls of the oven which are covered by brick. The raw begins to agglomerate at a temperature of 1300 ° C, until the temperature reaches 1450 ° C, we get grains with a diameter of 0.5 to 04 cm called Clinker. The clinker cools quickly when it comes out of the oven to a temperature between 50 and 250 degrees Celsius to avoid strong crystallization.\n- Thermogravimetric analysis:\nat T = 100 ° C: evaporation of free water.\na T = 500 ° C: Departure of chemically bound water.\nat T = 800 to 1000 ° C: Dissociation of limestone:\n\nCaCO3 ====== CaO + CO2\n-\na T = 1000 at 1450 ° C: Reaction between CaO and the clay elements (SiO2, Al2O3, Fe2O3).\n\nCement notions:\n-\nCalcium oxide CaO == C\nSilicon oxide Si2O3 == S\nAlumina oxide Al2O3 == A\nFerric oxide == F\n\n- At the start of the fusion, the oxides combine to form:\nHydraulic silicates:\n3CaO.SiO2 ==== C3S (50 to 70 percent of the clinker)\n2CaO.SiO2 ==== C2S (10 to 30 percent of the clinker)\nHydraulic aluminates:\n3CaO.Al2O3 == C3A (02 to 15 percent of the clinker)\n4CaO.Al2O3.Fe2O3 == C4AF (5 to 15 percent of the clinker)\n\n4)Grinding:\nSince the diameter of the clinker grains is somewhat large when it comes out of the oven, it is ground to a size less than 80 picometers, after the addition of gypsum (CaSO4.2H2O) and other additions. This is called Portland cement.\nClinker + gypsum ===== grinding ==== portland cement.\n\n-----------------------------------------------------------------------------------------------------------------------------------\n\nHydration, setting and hardening:\n-\nHydration and setting:\n- The hydration process begins when adding water to the clinker, the properties of the paste obtained change over time with an increase in viscosity and heat generation. But before that, that is to say when the time has not advanced much, the dough is soft, which allows us to form it to obtain the desired shape.\nWhen the mixture hardens and the viscosity begins to increase, it is said to set.\n- Several factors affect this process:\nThe more advanced the grinding process, the shorter the setting time.\nThe setting stops at a temperature of 0 ° C, and the higher the temperature, the faster the setting:\nat 02 ° C: 6 p.m.\nat 2 ° C: 3h30min\nat 35 ° C: 30min\n\nIn addition, the setting slows down if there is an excess of water or if the water contains organic matter.\n\nHardening:\n- This stage occurs after setting, and it can last from 28 days to several months, during which the mechanical strength of the cement will continue to increase.\n\nUse of additions in the manufacture of cement:\n-\nCement production is a very expensive and polluting process that requires large amounts of water. Consequently, mineral additions are added to facilitate the production process and obtain a better quality of the product and also to reduce pollution and the cost of production.\n\n1)Technical advantages:\nThe additions reduce the need for water, thus improving the resistance to chemical attack and the mechanical resistance of the product (Example: resistance to cracking).\n\n![image.png](https://cdn.steemitimages.com/DQmTekMK3PKKvv8nPdf5Gofs2FyoFkqBdFkdACLeJtw1y18/image.png)\n[Pixabay](https://pixabay.com/fr/photos/le-crack-mur-b%C3%A9ton-texture-pierre-695010/)\n\n2)Ecological advantages:\nLarge amounts of carbon dioxide CO2 are emitted during the cement production process (for 1 ton of cement === 1 ton of CO2 emitted), therefore, mineral additions are added to reduce these emissions.\n\n![image.png](https://cdn.steemitimages.com/DQmcN3rNWxcb7VYGjUfeyv28HfbJ2xXgXqo1He7BuDv4PdT/image.png)\n[Pixabay](https://pixabay.com/fr/photos/la-pollution-usine-l-industrie-2575166/)\n\n3)Economic advantages:\nCement production consumes a lot of energy and therefore a high cost, and therefore additives are added to reduce energy needs and production costs.\n\n- Examples of some mineral additions:\n\n- Pouzzolan:\nA silicon rock of volcanic origin, gives birth to new compounds which are stable, sparingly soluble in water, weakly agglomerated.\n\n- Silica smoke:\nA byproduct of silicon manufacturing,\nAdvantage: make a very reactive product.\n\n\n\n\n\nSources:\n[Ciment Portland — Wikipédia](https://fr.wikipedia.org/wiki/Ciment_Portland)\n[Fabrication du ciment | lafarge.fr](https://www.lafarge.fr/fabrication-du-ciment)\n[Fabrication du ciment. Processus de fabrication du ciment ](https://www.febelcem.be/fr/ciment-applications/fabrication-du-ciment/)\n[Clinker — Wikipédia](https://fr.wikipedia.org/wiki/Clinker)\n[Béton à une faible teneur en clinker](https://www.cbr.be/fr/beton-faible-en-clinker)\n[Liant hydraulique — Wikipédia](https://fr.wikipedia.org/wiki/Liant_hydraulique)\n[CIMENT, Prise et durcissement du ciment - Encyclopædia](https://www.universalis.fr/encyclopedie/ciment/3-prise-et-durcissement-du-ciment/)\n[Etude physicochimique du ciment ](https://www.memoireonline.com/02/13/7021/m_Etude-physicochimique-du-ciment0.html)",
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2020/04/09 17:58:15
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Transaction InfoBlock #42389490/Virtual Operation #3
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benainounareceived 0.001 SP curation reward for @hiddenblade / how-i-paint-an-apple-showcase-wednesday
2020/04/08 13:42:03
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Transaction InfoBlock #42356377/Virtual Operation #244
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benainounaclaimed reward balance: 0.094 STEEM, 0.115 SP
2020/04/05 16:32:21
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hiddenbladeupvoted (100.00%) @benainouna / q869fu
2020/04/03 01:14:27
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benainounareceived 0.094 STEEM, 0.114 SP author reward for @benainouna / processus-de-fabrication-du-ciment-portland
2020/04/02 19:03:27
authorbenainouna
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Transaction InfoBlock #42193687/Virtual Operation #11
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2020/04/02 19:03:27
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Transaction InfoBlock #42193687/Virtual Operation #10
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beemenginesent 0.001 STEEM to @benainouna- "💎 Awesome Community Offer, automated post booster with tens of extra votes. Passive Earnings and more. Checkout https://www.steembeem.com 🤙 or try it one month FOR ONLY 1 STEEM 🤯 to @beemengine wit..."
2020/04/02 17:59:09
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memo💎 Awesome Community Offer, automated post booster with tens of extra votes. Passive Earnings and more. Checkout https://www.steembeem.com 🤙 or try it one month FOR ONLY 1 STEEM 🤯 to @beemengine with memo: subscribe
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2020/04/02 17:58:15
parent authorhiddenblade
parent permlinkhow-i-paint-an-apple-showcase-wednesday
authorbenainouna
permlinkq869fu
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bodywaw, you are a great artist :)
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2020/04/02 17:56:30
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2020/04/02 17:47:18
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2020/04/01 20:32:30
curatorbenainouna
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Transaction InfoBlock #42167141/Virtual Operation #114
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2020/03/28 15:54:45
voterbenainouna
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2020/03/28 03:38:18
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2020/03/27 03:56:06
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2020/03/27 03:55:24
voterunivers.crypto
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2020/03/27 03:55:21
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2020/03/27 03:55:15
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2020/03/27 03:55:15
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2020/03/27 03:55:15
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2020/03/27 03:55:15
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2020/03/27 03:55:15
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2020/03/27 03:55:15
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2020/03/27 03:55:15
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2020/03/27 03:55:15
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2020/03/27 02:57:42
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2020/03/26 21:20:03
voternin4i
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2020/03/26 20:38:48
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2020/03/26 19:20:24
votertrader27
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2020/03/26 19:14:36
parent author
parent permlinkfr
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permlinkprocessus-de-fabrication-du-ciment-portland
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body@@ -38,12 +38,15 @@ de c -haux +alcaire qui
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2020/03/26 19:11:54
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2020/03/26 19:08:18
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2020/03/26 19:07:48
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        1
      ]
    ]
  },
  "memo": "STM6HAjW1eoKGhwVNi9eFa935KNcn2kKGaCioUZu4nqVzVqzFiz6y"
}

Witness Votes

12 / 30
[
  "blockbrothers",
  "blocktrades",
  "fyrst-witness",
  "jerrybanfield",
  "jesta",
  "smooth.witness",
  "someguy123",
  "steemitboard",
  "teamsteem",
  "therealwolf",
  "witness.svk",
  "yabapmatt"
]