CN110669664A - Electric field treatment test method and device for algae on surface of silicone rubber - Google Patents
Electric field treatment test method and device for algae on surface of silicone rubber Download PDFInfo
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- 241000195493 Cryptophyta Species 0.000 title claims abstract description 159
- 230000005684 electric field Effects 0.000 title claims abstract description 75
- 229920002379 silicone rubber Polymers 0.000 title claims abstract description 69
- 239000004945 silicone rubber Substances 0.000 title claims abstract description 34
- 238000010998 test method Methods 0.000 title claims abstract description 15
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- 230000000694 effects Effects 0.000 claims description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 6
- 238000004113 cell culture Methods 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- 239000011550 stock solution Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000004944 Liquid Silicone Rubber Substances 0.000 claims description 4
- 239000005995 Aluminium silicate Substances 0.000 claims description 3
- 235000012211 aluminium silicate Nutrition 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000011780 sodium chloride Substances 0.000 claims description 3
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- 230000003213 activating effect Effects 0.000 claims 2
- 239000012212 insulator Substances 0.000 abstract description 12
- 230000002063 effect on algae Effects 0.000 abstract description 3
- 238000009422 external insulation Methods 0.000 description 5
- 239000011810 insulating material Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
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Abstract
The invention relates to the technical field of high-voltage insulator algae treatment, and discloses an electric field treatment test method for algae on the surface of silicone rubber, which comprises the following steps: manufacturing an annular sheet by using silicon rubber; preparing algae liquid or algae mixture with different concentrations of algae cells, and coating the algae liquid or the algae mixture on the surface of the annular sheet; connecting a high-voltage electrode of a high-voltage power supply to the inner circular wall of the annular sheet, and connecting a grounding electrode to the outer circular wall of the annular sheet; starting the high-voltage power supply to apply voltage to the annular sheet; after the pressurization is finished, the surface of the annular sheet is divided into a plurality of annular areas, and the algae change conditions in the annular electric field intensity ranges corresponding to different annular areas are obtained. Measuring the algae change conditions in different annular electric field intensity ranges, and researching the growth treatment effect on algae cells. The invention also provides a device based on the electric field treatment test method of the algae on the surface of the silicon rubber.
Description
Technical Field
The invention relates to the technical field of high-voltage insulator algae treatment, in particular to an electric field treatment test method and device for algae on the surface of silicon rubber.
Background
China has broad breadth of members and various climatic characteristics, high-voltage line corridor coverage areas are wider and wider along with the construction and development of ultra-high voltage power grids, and power transmission lines inevitably pass through warm and humid areas. The surface of the composite external insulation material operating in the warm and humid environment is usually covered with algae, and when the algae grows to a certain degree, the electrical property, the hydrophobic property and the mechanical property of the insulation material can be deteriorated, and finally, the external insulation flashover is caused, so that great economic loss is caused. Investigation finds that algae grows on the surfaces of the post insulators, the room-temperature vulcanized silicone rubber and the composite insulators of the transformer substations in the areas such as Guangxi, Guangdong and Yunnan, the varieties and the coverage areas of the algae are greatly different along with different operation areas, and the algae are the results of combined action of various natural environmental factors and are related to the surface dirt accumulation degree of the insulating materials, the electric field intensity, the environmental climate and the like. How to deal with the problem of algae growing on the surface of the insulator becomes an important work in the field of power transmission and transformation external insulation, and the rule and reason of algae growing on the surface of the insulator need to be found out to make corresponding precautionary measures, which is an important task related to reliable operation and power supply stability of a power system.
In order to independently study the effect of the electric field on the algae in a laboratory, a device for treating the algae on the surface of the silicon rubber by adopting the electric field needs to be built. Usually, a voltage can be directly applied to the surface of the insulator to study the growth of algae at different positions on the surface of the insulator. However, the umbrella skirt structures of insulators of different types are different, so that the electric field distribution conditions on the surface of the insulator are greatly different. Moreover, high electric field intensity cannot be achieved, particularly when algae and dirt are mixed together, electric arcs are easy to generate and even flashover occurs, and measurement of the growth condition of the algae is necessarily inaccurate.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: how to more accurately acquire the effect of different electric field strengths on the growth of algae.
In order to solve the technical problem, the invention provides an electric field treatment test method for algae on the surface of silicone rubber, which comprises the following steps:
manufacturing an annular sheet by using silicon rubber;
preparing algae liquid or algae mixture with different concentrations of algae cells, and coating the algae liquid or the algae mixture on the surface of the annular sheet;
connecting a high-voltage electrode of a high-voltage power supply to the inner circular wall of the annular sheet, and connecting a grounding electrode to the outer circular wall of the annular sheet;
starting the high-voltage power supply to apply voltage to the annular sheet;
after the pressurization is finished, the surface of the annular sheet is divided into a plurality of annular areas, and the algae change conditions in the annular electric field intensity ranges corresponding to different annular areas are obtained.
Preferably, in the step of preparing the algae solution or the algae mixture with different concentrations of algae cells and coating the algae solution or the algae mixture on the surface of the annular sheet, the steps are specifically as follows:
diluting the algae cell culture stock solution and distilled water according to different proportions to obtain algae solutions with different concentrations of algae cells or mixing the algae cell culture stock solution, sodium chloride and kaolin according to different proportions to obtain algae mixtures with different concentrations of algae cells, and uniformly coating the algae solutions or the algae mixtures on the surface of the annular sheet through a brush.
As a preferable scheme, in the step of manufacturing the annular sheet by using the silicone rubber, the method specifically comprises the following steps:
the annular sheet is made of high-temperature vulcanized silicone rubber or liquid silicone rubber or room-temperature vulcanized silicone rubber.
Preferably, in the step of connecting the high voltage electrode of the high voltage power supply to the inner circular wall of the circular sheet and the ground electrode to the outer circular wall of the circular sheet, the method further comprises:
and adjusting the axis of the inner circular wall of the high-voltage electrode and the axis of the inner circular wall of the grounding electrode to be the same straight line.
Preferably, after the pressurization is finished, the step of dividing the surface of the annular sheet into a plurality of annular regions and obtaining the algae variation within the annular electric field intensity range corresponding to different annular regions specifically comprises:
after the pressurization is finished, a plurality of concentric annular areas are divided on the surface of the annular sheet along the radial direction of the annular sheet, and the algae change condition in the annular electric field intensity range corresponding to different annular areas is obtained.
Preferably, after the pressurization is finished, the step of dividing the surface of the annular sheet into a plurality of annular regions to obtain the variation of algae within the annular electric field intensity range corresponding to different annular regions further comprises:
washing the algae liquid or the algae mixture in different annular areas by using deionized water, measuring and comparing the number of algae cells of the algae liquid or the algae mixture in different annular areas, and analyzing the treatment effect of different annular electric field intensity ranges on the algae cells.
Preferably, in the step of starting the high voltage power supply to apply voltage to the ring segment, the method further includes:
setting a preset voltage value and a preset pressurization time.
Preferably, in the step of starting the high voltage power supply to apply voltage to the ring segment, the method further includes:
either an alternating voltage or a direct voltage is selected.
The invention also provides a device for realizing the electric field treatment test method of the algae on the surface of the silicon rubber, which comprises a high-voltage electrode connected with a high-voltage power supply, a grounding electrode connected with the ground and an annular sheet made of the silicon rubber, wherein the outer side of the high-voltage electrode is connected with the inner circular wall of the annular sheet, and the inner side of the grounding electrode is connected with the outer circular wall of the annular sheet.
Preferably, the central axis of the high-voltage electrode, the central axis of the grounding electrode and the central axis of the annular sheet are collinear, the high-voltage power supply is connected with the center of the high-voltage electrode through a lead, and the outer side of the grounding electrode is connected with the ground.
Compared with the prior art, the electric field treatment test method for the algae on the surface of the silicone rubber has the beneficial effects that:
according to the embodiment of the invention, the silicon rubber is made into the annular sheet, different algae are configured into algae liquid or algae mixture with algae cells of different concentrations according to requirements, the algae liquid or the algae mixture is coated on the surface of the silicon rubber, voltage is applied between the center and the periphery of the annular sheet, annular electric fields with different strengths are formed on the surface of the silicon rubber along the radial direction, after the voltage application is finished, the growth treatment effect on the algae cells under the same external condition and different electric field strengths is researched by measuring the algae change conditions in different annular electric field strength ranges, the diameter of the annular sheet can be increased, the high electric field strength of the high-voltage electrode is ensured, the flashover phenomenon on the surface of the silicon rubber is prevented, and the accuracy of the measurement result is ensured.
Drawings
FIG. 1 is a block diagram showing the flow of an electric field treatment test method of algae on the surface of silicone rubber according to a preferred embodiment of the present invention.
FIG. 2 is a schematic structural view of an electric field treatment test apparatus for algae on the surface of silicone rubber according to a preferred embodiment of the present invention.
FIG. 3 is a schematic structural view of an electric field treatment test apparatus for algae on the surface of silicone rubber according to another embodiment of the present invention.
In the figure: 1. an annular sheet; 2. a high voltage power supply; 3. a high voltage electrode; 4. a ground electrode; 5. and (4) conducting wires.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
As shown in fig. 1, a method for testing algae on the surface of silicone rubber by electric field treatment according to a preferred embodiment of the present invention includes the following steps:
manufacturing an annular sheet 1 by using silicon rubber;
preparing algae liquid or algae mixture with different concentrations of algae cells, and coating the algae liquid or the algae mixture on the surface of the annular sheet 1;
connecting a high-voltage electrode 3 of a high-voltage power supply 2 to the inner circular wall of the circular slice 1, and connecting a grounding electrode 4 to the outer circular wall of the circular slice 1;
starting the high-voltage power supply 2 to apply voltage to the ring piece 1;
after the pressurization is finished, the surface of the annular sheet 1 is divided into a plurality of annular areas, and the algae change conditions in the annular electric field intensity ranges corresponding to different annular areas are obtained.
The electric field treatment test method of the algae on the surface of the silicon rubber based on the technical characteristics is characterized in that the silicon rubber is made into an annular sheet 1, configuring different algae into algae liquid or algae mixture with different concentrations of algae cells according to requirements, coating the algae liquid or the algae mixture on the surface of the silicon rubber, applying voltage between the center and the periphery of the annular sheet 1 to form annular electric fields with different strengths on the surface of the silicon rubber along the radial direction, after the voltage application is finished, the growth treatment effect on algae cells under the same external conditions and different electric field strengths is researched by measuring the algae change conditions in different annular electric field strength ranges, and the diameter of the annular sheet 1 can be increased, so that the high-voltage electrode 3 is ensured to have higher electric field intensity, the phenomenon of flashover on the surface of the silicon rubber is prevented, and the accuracy of a measuring result is ensured.
In this embodiment, in the step of coating the algae liquid or the algae mixture with the algae cells of different concentrations on the surface of the ring-shaped sheet 1, the steps are specifically as follows:
the algae liquid with different concentrations of algae cells is diluted by using the algae cell culture stock solution and distilled water according to different proportions or is mixed by using the algae cell culture stock solution, sodium chloride and kaolin according to different proportions to form an algae mixture with different concentrations of algae cells, and the algae liquid or the algae mixture is uniformly coated on the surface of the annular sheet 1 through a brush. Ensuring that the surface of the annular sheet 1 is uniformly distributed with algae cells.
In this embodiment, in the step of manufacturing the annular sheet 1 by using silicon rubber, the specific steps are as follows:
the annular sheet 1 is made of high-temperature vulcanized silicone rubber or liquid silicone rubber or room-temperature vulcanized silicone rubber. The composite insulating materials are common materials in the field of external insulation of power systems, and ensure that the measuring result is attached to the environment where algae grow on the surface of the power transmission and transformation insulator.
In this embodiment, in the step of connecting the high voltage electrode 3 of the high voltage power supply 2 to the inner circular wall of the circular patch 1 and connecting the ground electrode 4 to the outer circular wall of the circular patch 1, the method further comprises:
the inner wall axis of the high voltage electrode 3 and the inner wall axis of the grounding electrode 4 are adjusted to be the same straight line. The high-voltage electrode 3 and the grounding electrode 4 form a coaxial electrode, and the divided annular regions are more accurately attached to the corresponding annular electric field.
In this embodiment, after the pressurization is finished, the step of dividing the surface of the ring-shaped sheet 1 into a plurality of ring-shaped areas and obtaining the variation of algae within the ring-shaped electric field intensity range corresponding to different ring-shaped areas specifically includes:
after the pressurization is finished, a plurality of concentric annular areas are divided on the surface of the annular sheet 1 along the radial direction of the annular sheet 1, and the algae change condition in the annular electric field intensity range corresponding to different annular areas is obtained. By taking the high-voltage electrode 3 as a center, a plurality of concentric annular regions are divided to be more accurately attached to the corresponding annular electric field, and the accuracy of a measuring result is ensured.
Further, after the pressurization is finished, the step of dividing the surface of the ring-shaped sheet 1 into a plurality of ring-shaped areas and obtaining the algae variation within the ring-shaped electric field intensity range corresponding to different ring-shaped areas further includes:
washing the algae liquid or the algae mixture in different annular areas by using deionized water, measuring and comparing the number of algae cells of the algae liquid or the algae mixture in different annular areas, and analyzing the treatment effect of different annular electric field intensity ranges on the algae cells. The obtained result is more convincing by taking the measured number of the algae cells as a judgment standard.
In this embodiment, in the step of starting the high voltage power supply 2 to apply voltage to the ring segment 1, the method further includes:
setting a preset voltage value and a preset pressurization time. And other experimental factors are processed in a unified manner, so that the accuracy of the result is prevented from being influenced.
In this embodiment, in the step of starting the high voltage power supply 2 to apply voltage to the ring segment 1, the method further includes:
either an alternating voltage or a direct voltage is selected. Different types of voltages can be selected for testing, and the test result has wider application range.
In summary, the experimental method provided by the embodiment of the invention can realize the function of processing the alternating current and direct current electric fields of the algae on the surface of the silicon rubber insulating material, process different kinds of algae or algae liquid or algae mixture with different configuration proportions on the surface of the silicon rubber, provide different types and sizes of annular electric fields by controlling the diameter of the annular sheet 1, ensure that the high-voltage electrode 3 has higher electric field intensity, prevent the flashover phenomenon on the surface of the silicon rubber, and further research the effect of the electric field intensity on the growth of the algae under the condition of different parameters.
As shown in fig. 2 and 3, the present invention further provides an electric field treatment test apparatus for algae on the surface of silicone rubber, which includes a high voltage electrode 3 connected to a high voltage power supply 2, a ground electrode 4 connected to the ground, and an annular sheet 1 made of silicone rubber, wherein the high voltage electrode 3 is circular, the outer side of the high voltage electrode 3 is connected to the inner circumferential wall of the annular sheet 1, the ground electrode 4 is circular, and the inner side of the ground electrode 4 is connected to the outer circumferential wall of the annular sheet 1.
According to the electric field treatment test device for the algae on the surface of the silicon rubber based on the technical characteristics, the silicon rubber is manufactured into the annular sheet 1, the surface of the annular sheet 1 is used for painting algae liquid or algae mixture, voltage is applied between the center and the periphery of the annular sheet 1 through the high-voltage electrode 3 and the grounding electrode 4, annular electric fields with different strengths are formed on the surface of the silicon rubber along the radial direction, after the voltage application is finished, the growth treatment effect on algae cells under the same external condition and different electric field strengths is researched by measuring the algae change conditions in different annular electric field strength ranges, the diameter of the annular sheet 1 can be increased, the high electric field strength of the high-voltage electrode 3 is ensured, the flashover phenomenon on the surface of the silicon rubber is prevented, and the accuracy of a measurement result is ensured.
In this embodiment, the central axis of high voltage electrode 3 the central axis of telluric electricity field 4 with the central axis of annular piece 1 is collinear, makes high voltage electrode 3 with telluric electricity field 4 forms coaxial electrode, and the high voltage electrode 3 of being convenient for is central, divides a plurality of concentric annular regions and the annular electric field that corresponds more laminating accuracy, guarantees measuring result's accuracy.
In this embodiment, the high voltage power supply 2 is connected to the center of the high voltage electrode 3 through a wire 5, and the outer side of the grounding electrode 4 is connected to the ground through the wire 5, so as to avoid the influence of the external wire 5 on the formation of the annular electric field.
In this embodiment, the high voltage electrode 3 is a circular copper foil with a diameter of 5cm, and plays a role of conducting high voltage current. For example, when the outer diameter of the ring segment 1 is 20cm, the highest electric field can reach 6kV/cm by applying a voltage with a peak value of 21.21kV, and the flashover phenomenon does not occur, and the local electric field around the central high voltage electrode 3 of the ring segment 1 is highest and is smaller as going outwards. If the outer diameter of the silicon rubber is increased, the voltage of the central point of the annular sheet 1 can be increased, so that the maximum electric field on the surface of the silicon rubber is increased, and flashover cannot occur.
In this embodiment, the grounding electrode 4 is a ring shape made of copper sheets, and copper sheets with different lengths are taken according to the size of the ring-shaped sheet 1 to surround the outer circular wall of the ring-shaped sheet 1, so as to realize the current grounding effect.
As another equivalent embodiment, as shown in fig. 3, the ground electrode 4 is an annular spring made of copper material, the diameter of the ground electrode 4 is rapidly changed to adapt to the annular sheets 1 with different diameters, and the universality is strong.
In the present embodiment, the high voltage power supply 2 is used for a controller that adjusts a voltage value and a pressurization time. And other experimental factors are processed in a unified manner, so that the accuracy of the result is prevented from being influenced.
In the present embodiment, the high voltage power supply 2 is a high voltage power supply 2 that outputs an ac voltage and a dc voltage. It can be understood that the high voltage power supply 2 may adopt a universal ac/dc high voltage power supply 2, and the controller may perform magnitude and on-off control on the voltage of the high voltage power supply 2, and the specific structure and model thereof are not described herein again.
In this embodiment, the silicone rubber is a high temperature vulcanized silicone rubber or a liquid silicone rubber or a room temperature vulcanized silicone rubber. The composite insulating materials are common materials in the field of external insulation of power systems, and ensure that the measuring result is attached to the environment where algae grow on the surface of the power transmission and transformation insulator.
In summary, the experimental device provided by the embodiment of the invention can realize the function of processing the alternating current and direct current electric fields of the algae on the surface of the silicon rubber insulating material, process different kinds of algae or algae liquid or algae mixture with different configuration proportions on the surface of the silicon rubber, provide different types and sizes of annular electric fields by controlling the diameter of the annular sheet 1, ensure that the high-voltage electrode 3 has higher electric field intensity, prevent the flashover phenomenon on the surface of the silicon rubber, and further research the effect of the electric field intensity on the growth of the algae under the condition of different parameters.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. An electric field treatment test method for algae on the surface of silicone rubber is characterized by comprising the following steps:
manufacturing an annular sheet by using silicon rubber;
preparing algae liquid or algae mixture with different concentrations of algae cells, and coating the algae liquid or the algae mixture on the surface of the annular sheet;
connecting a high-voltage electrode of a high-voltage power supply to the inner circular wall of the annular sheet, and connecting a grounding electrode to the outer circular wall of the annular sheet;
starting the high-voltage power supply to apply voltage to the annular sheet;
after the pressurization is finished, the surface of the annular sheet is divided into a plurality of annular areas, and the algae change conditions in the annular electric field intensity ranges corresponding to different annular areas are obtained.
2. The electric field treatment test method for algae on the surface of silicone rubber according to claim 1, wherein in the step of coating the algae liquid or the algae mixture with the algae cells of different concentrations on the surface of the ring-shaped sheet, the steps are specifically as follows:
diluting the algae cell culture stock solution and distilled water according to different proportions to obtain algae solutions with different concentrations of algae cells or mixing the algae cell culture stock solution, sodium chloride and kaolin according to different proportions to obtain algae mixtures with different concentrations of algae cells, and uniformly coating the algae solutions or the algae mixtures on the surface of the annular sheet through a brush.
3. The electric field treatment test method for algae on the surface of silicone rubber according to claim 1, wherein in the step of making the ring-shaped sheet by using silicone rubber, the steps are specifically as follows:
the annular sheet is made of high-temperature vulcanized silicone rubber or liquid silicone rubber or room-temperature vulcanized silicone rubber.
4. The method for testing electric field treatment of algae on the surface of silicone rubber according to claim 1, wherein in the step of connecting the high voltage electrode of the high voltage power supply to the inner circumferential wall of the circular piece and the ground electrode to the outer circumferential wall of the circular piece, further comprising:
and adjusting the axis of the inner circular wall of the high-voltage electrode and the axis of the inner circular wall of the grounding electrode to be the same straight line.
5. The electric field treatment test method for algae on the surface of silicone rubber according to claim 1, wherein after the pressurization is finished, the step of dividing the surface of the annular sheet into a plurality of annular areas and obtaining the algae variation within the annular electric field intensity range corresponding to different annular areas specifically comprises:
after the pressurization is finished, a plurality of concentric annular areas are divided on the surface of the annular sheet along the radial direction of the annular sheet, and the algae change condition in the annular electric field intensity range corresponding to different annular areas is obtained.
6. The method for testing electric field treatment of algae on the surface of silicone rubber of claim 5, wherein after the pressurization is finished, the step of dividing the surface of the annular sheet into a plurality of annular areas and obtaining the algae variation within the annular electric field intensity range corresponding to different annular areas further comprises:
washing the algae liquid or the algae mixture in different annular areas by using deionized water, measuring and comparing the number of algae cells of the algae liquid or the algae mixture in different annular areas, and analyzing the treatment effect of different annular electric field intensity ranges on the algae cells.
7. The method for testing electric field treatment of algae on the surface of silicone rubber according to claim 1, wherein the step of activating the high voltage power supply to apply voltage to the ring-shaped sheet further comprises:
setting a preset voltage value and a preset pressurization time.
8. The method for testing electric field treatment of algae on the surface of silicone rubber according to claim 1, wherein the step of activating the high voltage power supply to apply voltage to the ring-shaped sheet further comprises:
either an alternating voltage or a direct voltage is selected.
9. An apparatus for performing the electric field treatment test method for algae on the surface of silicone rubber according to any one of claims 1 to 8, comprising a high voltage electrode connected to a high voltage power supply, a ground electrode connected to the ground, and a ring-shaped sheet made of silicone rubber, wherein the outer side of the high voltage electrode is connected to the inner circumferential wall of the ring-shaped sheet, and the inner side of the ground electrode is connected to the outer circumferential wall of the ring-shaped sheet.
10. The electric field treatment test device for algae on the surface of silicone rubber of claim 9, wherein the central axis of the high voltage electrode and the central axis of the grounding electrode are collinear with the central axis of the ring-shaped sheet, the high voltage power supply is connected with the center of the high voltage electrode through a lead, and the outer side of the grounding electrode is connected with the ground.
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