"Filtered air"

#12585784

25 July 2025

A tree-lined pedestrian zone along Nollendorfstrasse in the Schoeneberg district features Gruenderzeit-era apartment buildings and cobblestone paving under a dense green canopy, forming part of the city's climate-adaptive urban structure for heat protection in Berlin, Germany, on July 21, 2025.

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#12585785

25 July 2025

A tree-lined pedestrian zone along Nollendorfstrasse in the Schoeneberg district features Gruenderzeit-era apartment buildings and cobblestone paving under a dense green canopy, forming part of the city's climate-adaptive urban structure for heat protection in Berlin, Germany, on July 21, 2025.

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#5580890

25 March 2020

eng. Krasen Dimitrov show the system of the newly invented masks in his office in Varna, Bulgaria. A Bulgarian company produces FFP4 type masks that can be reused with either electricity or a battery. The mask is most effective in combating coronavirus, with the highest percentage of filtered air - 98%. Due to the limited amount of FFP4 type masks, Bulgarian Krasen Dimitrov invents a way for the mask to have an unlimited life and to meet without being replaced by the battery. His company, Mamel, already has patented devices that are made on the principle of cold plasma, which within 5 to 20 minutes can sterilize various objects. One of the sterilization devices is for bee hives. When treated with it 5, 6 times a year for 20 minutes on the hive has been shown to increase the productivity of bees by 30%. The companies have developed services for the sterilization of large public spaces such as subway stations, hospitals, real estate and urban transport and are also used with cold plasma for domestic use. Krasen Dimitrov has already donated from his sterilizers to a hospital in the town of Gabrovo, which has disappeared a case of a coronavirus in Bulgaria, Varna, Bulgaria on March 25, 2020

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#5580894

25 March 2020

eng. Krasen Dimitrov show the system of the newly invented masks in his office in Varna, Bulgaria. A Bulgarian company produces FFP4 type masks that can be reused with either electricity or a battery. The mask is most effective in combating coronavirus, with the highest percentage of filtered air - 98%. Due to the limited amount of FFP4 type masks, Bulgarian Krasen Dimitrov invents a way for the mask to have an unlimited life and to meet without being replaced by the battery. His company, Mamel, already has patented devices that are made on the principle of cold plasma, which within 5 to 20 minutes can sterilize various objects. One of the sterilization devices is for bee hives. When treated with it 5, 6 times a year for 20 minutes on the hive has been shown to increase the productivity of bees by 30%. The companies have developed services for the sterilization of large public spaces such as subway stations, hospitals, real estate and urban transport and are also used with cold plasma for domestic use. Krasen Dimitrov has already donated from his sterilizers to a hospital in the town of Gabrovo, which has disappeared a case of a coronavirus in Bulgaria, Varna, Bulgaria on March 25, 2020

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#5580900

25 March 2020

eng. Krasen Dimitrov show the system of the newly invented masks in his office in Varna, Bulgaria. A Bulgarian company produces FFP4 type masks that can be reused with either electricity or a battery. The mask is most effective in combating coronavirus, with the highest percentage of filtered air - 98%. Due to the limited amount of FFP4 type masks, Bulgarian Krasen Dimitrov invents a way for the mask to have an unlimited life and to meet without being replaced by the battery. His company, Mamel, already has patented devices that are made on the principle of cold plasma, which within 5 to 20 minutes can sterilize various objects. One of the sterilization devices is for bee hives. When treated with it 5, 6 times a year for 20 minutes on the hive has been shown to increase the productivity of bees by 30%. The companies have developed services for the sterilization of large public spaces such as subway stations, hospitals, real estate and urban transport and are also used with cold plasma for domestic use. Krasen Dimitrov has already donated from his sterilizers to a hospital in the town of Gabrovo, which has disappeared a case of a coronavirus in Bulgaria, Varna, Bulgaria on March 25, 2020

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#5580902

25 March 2020

eng. Krasen Dimitrov show the system of the newly invented masks in his office in Varna, Bulgaria. A Bulgarian company produces FFP4 type masks that can be reused with either electricity or a battery. The mask is most effective in combating coronavirus, with the highest percentage of filtered air - 98%. Due to the limited amount of FFP4 type masks, Bulgarian Krasen Dimitrov invents a way for the mask to have an unlimited life and to meet without being replaced by the battery. His company, Mamel, already has patented devices that are made on the principle of cold plasma, which within 5 to 20 minutes can sterilize various objects. One of the sterilization devices is for bee hives. When treated with it 5, 6 times a year for 20 minutes on the hive has been shown to increase the productivity of bees by 30%. The companies have developed services for the sterilization of large public spaces such as subway stations, hospitals, real estate and urban transport and are also used with cold plasma for domestic use. Krasen Dimitrov has already donated from his sterilizers to a hospital in the town of Gabrovo, which has disappeared a case of a coronavirus in Bulgaria, Varna, Bulgaria on March 25, 2020

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#5580906

25 March 2020

eng. Krasen Dimitrov show the system of the newly invented masks in his office in Varna, Bulgaria. A Bulgarian company produces FFP4 type masks that can be reused with either electricity or a battery. The mask is most effective in combating coronavirus, with the highest percentage of filtered air - 98%. Due to the limited amount of FFP4 type masks, Bulgarian Krasen Dimitrov invents a way for the mask to have an unlimited life and to meet without being replaced by the battery. His company, Mamel, already has patented devices that are made on the principle of cold plasma, which within 5 to 20 minutes can sterilize various objects. One of the sterilization devices is for bee hives. When treated with it 5, 6 times a year for 20 minutes on the hive has been shown to increase the productivity of bees by 30%. The companies have developed services for the sterilization of large public spaces such as subway stations, hospitals, real estate and urban transport and are also used with cold plasma for domestic use. Krasen Dimitrov has already donated from his sterilizers to a hospital in the town of Gabrovo, which has disappeared a case of a coronavirus in Bulgaria, Varna, Bulgaria on March 25, 2020

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#5580908

25 March 2020

eng. Krasen Dimitrov in his office in Varna, Bulgaria. A Bulgarian company produces FFP4 type masks that can be reused with either electricity or a battery. The mask is most effective in combating coronavirus, with the highest percentage of filtered air - 98%. Due to the limited amount of FFP4 type masks, Bulgarian Krasen Dimitrov invents a way for the mask to have an unlimited life and to meet without being replaced by the battery. His company, Mamel, already has patented devices that are made on the principle of cold plasma, which within 5 to 20 minutes can sterilize various objects. One of the sterilization devices is for bee hives. When treated with it 5, 6 times a year for 20 minutes on the hive has been shown to increase the productivity of bees by 30%. The companies have developed services for the sterilization of large public spaces such as subway stations, hospitals, real estate and urban transport and are also used with cold plasma for domestic use. Krasen Dimitrov has already donated from his sterilizers to a hospital in the town of Gabrovo, which has disappeared a case of a coronavirus in Bulgaria, Varna, Bulgaria on March 25, 2020

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#5580910

25 March 2020

eng. Krasen Dimitrov in his office in Varna, Bulgaria. A Bulgarian company produces FFP4 type masks that can be reused with either electricity or a battery. The mask is most effective in combating coronavirus, with the highest percentage of filtered air - 98%. Due to the limited amount of FFP4 type masks, Bulgarian Krasen Dimitrov invents a way for the mask to have an unlimited life and to meet without being replaced by the battery. His company, Mamel, already has patented devices that are made on the principle of cold plasma, which within 5 to 20 minutes can sterilize various objects. One of the sterilization devices is for bee hives. When treated with it 5, 6 times a year for 20 minutes on the hive has been shown to increase the productivity of bees by 30%. The companies have developed services for the sterilization of large public spaces such as subway stations, hospitals, real estate and urban transport and are also used with cold plasma for domestic use. Krasen Dimitrov has already donated from his sterilizers to a hospital in the town of Gabrovo, which has disappeared a case of a coronavirus in Bulgaria, Varna, Bulgaria on March 25, 2020

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#5580924

25 March 2020

eng. Krasen Dimitrov show the technology with cold plasma in his office in Varna, Bulgaria. A Bulgarian company produces FFP4 type masks that can be reused with either electricity or a battery. The mask is most effective in combating coronavirus, with the highest percentage of filtered air - 98%. Due to the limited amount of FFP4 type masks, Bulgarian Krasen Dimitrov invents a way for the mask to have an unlimited life and to meet without being replaced by the battery. His company, Mamel, already has patented devices that are made on the principle of cold plasma, which within 5 to 20 minutes can sterilize various objects. One of the sterilization devices is for bee hives. When treated with it 5, 6 times a year for 20 minutes on the hive has been shown to increase the productivity of bees by 30%. The companies have developed services for the sterilization of large public spaces such as subway stations, hospitals, real estate and urban transport and are also used with cold plasma for domestic use. Krasen Dimitrov has already donated from his sterilizers to a hospital in the town of Gabrovo, which has disappeared a case of a coronavirus in Bulgaria, Varna, Bulgaria on March 25, 2020

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#5580950

25 March 2020

eng. Krasen Dimitrov show the technology with cold plasma in his office in Varna, Bulgaria. A Bulgarian company produces FFP4 type masks that can be reused with either electricity or a battery. The mask is most effective in combating coronavirus, with the highest percentage of filtered air - 98%. Due to the limited amount of FFP4 type masks, Bulgarian Krasen Dimitrov invents a way for the mask to have an unlimited life and to meet without being replaced by the battery. His company, Mamel, already has patented devices that are made on the principle of cold plasma, which within 5 to 20 minutes can sterilize various objects. One of the sterilization devices is for bee hives. When treated with it 5, 6 times a year for 20 minutes on the hive has been shown to increase the productivity of bees by 30%. The companies have developed services for the sterilization of large public spaces such as subway stations, hospitals, real estate and urban transport and are also used with cold plasma for domestic use. Krasen Dimitrov has already donated from his sterilizers to a hospital in the town of Gabrovo, which has disappeared a case of a coronavirus in Bulgaria, Varna, Bulgaria on March 25, 2020

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#5580966

25 March 2020

eng. Krasen Dimitrov show the technology with cold plasma in his office in Varna, Bulgaria. A Bulgarian company produces FFP4 type masks that can be reused with either electricity or a battery. The mask is most effective in combating coronavirus, with the highest percentage of filtered air - 98%. Due to the limited amount of FFP4 type masks, Bulgarian Krasen Dimitrov invents a way for the mask to have an unlimited life and to meet without being replaced by the battery. His company, Mamel, already has patented devices that are made on the principle of cold plasma, which within 5 to 20 minutes can sterilize various objects. One of the sterilization devices is for bee hives. When treated with it 5, 6 times a year for 20 minutes on the hive has been shown to increase the productivity of bees by 30%. The companies have developed services for the sterilization of large public spaces such as subway stations, hospitals, real estate and urban transport and are also used with cold plasma for domestic use. Krasen Dimitrov has already donated from his sterilizers to a hospital in the town of Gabrovo, which has disappeared a case of a coronavirus in Bulgaria, Varna, Bulgaria on March 25, 2020

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#4272164

5 May 2019

An explosion is pictured among buildings during an Israeli airstike on Gaza City on May5, 2019. - Gaza militants fired a barrage of rockets at Israel, which responded with airstrikes, officials said, as a fragile ceasefire again faltered.

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#4272168

5 May 2019

An explosion is pictured among buildings during an Israeli airstike on Gaza City on May5, 2019. - Gaza militants fired a barrage of rockets at Israel, which responded with airstrikes, officials said, as a fragile ceasefire again faltered.

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#4272172

5 May 2019

An explosion is pictured among buildings during an Israeli airstike on Gaza City on May5, 2019. - Gaza militants fired a barrage of rockets at Israel, which responded with airstrikes, officials said, as a fragile ceasefire again faltered.

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#4272138

5 May 2019

A picture taken in Gaza city on May 5, 2019 shows rockets fired toward the Israeli areas from Gaza Strip. - Gaza militants on Saturday fired some 250 rockets at Israel, which responded with strikes as a fragile ceasefire again faltered in an escalation that left four Palestinians dead, including a baby in disputed circumstances.

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