Plasma generated ozone and reactive oxygen species for point of use PPE decontamination system

Huang, Min; Hasan, Md Kamrul; Rathore, Kavita; Baky, Md Abdullah Hil; Lassalle, John; Kraus, Jamie; Burnette, Matthew; Campbell, Christopher; Wang, Kunpeng; Jemison, Howard; Pillai, Suresh D.; Pharr, Matt; Staack, David

doi:10.1371/journal.pone.0262818

Cited by 7 publications

(5 citation statements)

References 54 publications

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“…NPPTL also tested the strap integrity of an eBeam irradiated respirator, showing 12.10% and 7.53% decrease in recorded force in the top strap and force in the bottom strap respectively. The strap is made of polyisoprene, which also showed degradation after plasma ROS treatment in our previous work ( Huang et al, 2022 ). The strap functions to provide an effective seal between the filter body and the wearer's face and there are more alternatives to polyisoprene to support this functionality.…”

Section: Resultsmentioning

confidence: 95%

“…The strap functions to provide an effective seal between the filter body and the wearer's face and there are more alternatives to polyisoprene to support this functionality. For instance, a strap made from polyester/nylon spandex and a combination of Lycra 784 and polyester materials (BYD mask and Prestige Ameritech) are two good potential alternatives to polyisoprene-based straps according to our previous work ( Huang et al, 2022 ).…”

Section: Resultsmentioning

confidence: 99%

“…Control and treated samples ( Table 1 ) were employed to investigate functionality performance, surface properties, liquid barrier performance, material integrity, and mechanical properties, including filtration efficiency testing, strap integrity testing, surface wettability testing, yellowness index (YI) testing, surface charge measurements, hydrostatic pressure testing, water impact penetration testing, and morphological characterization scanning. A detailed description of the above tests for the respirators and gown, except for morphological characterization scanning, can be found in our previous study ( Huang et al, 2022 ). Morphological characterization scanning was used in the present work to examine the effects of eBeam irradiation on the material structure and integrity.…”

Section: Methodsmentioning

confidence: 99%

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Electron beam technology for Re-processing of personal protective equipment

Huang

Hasan

Pillai

et al. 2023

Radiation Physics and Chemistry

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Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Electron beam technology for Re-processing of personal protective equipment

Huang

Hasan

Pillai

et al. 2023

Radiation Physics and Chemistry

Self Cite

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“…Long-lived RONS were chosen as a marker and assessed by an O 3 monitor and a NO x monitor (Model 106l & Model 405 nm, 2B Technologies, Inc., Colorado, USA). Both devices have already been successfully applied for gas phase analysis in CAP processes [28][29][30]. The O 3 monitor operates at a continuous gas sampling rate of 1.0 l min −1 and the NO x monitor at a rate of 1.5 l min −1 .…”

Section: Rons Concentrationsmentioning

confidence: 99%

Which CAP components are relevant for enhancing dermal microcirculation in intact skin?

Borchardt,

Grams,

Emmert

et al. 2024

J. Phys. D: Appl. Phys.

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Cold atmospheric plasma (CAP) has been shown to be beneficial in various medical fields such as wound healing, oncology or dentistry. A prominent effect induced by CAP is the boost of microcirculation in human skin tissue. Being a complex cocktail of physical and chemically reactive components, the mechanisms by which CAP enhances microcirculation still remain unclear. Thus, this study aims to identify relevant CAP components involved in stimulation of dermal microcirculation. In a comparative approach, the application of the same CAP source was modified in such a way that three different treatment modalities could be realized, each with a characteristic composition of electrical current flow and concentration of reactive species. Microcirculation parameters oxygen saturation (StO2), tissue hemoglobin index, near-infrared perfusion index and tissue water index were recorded before and after each treatment on the lateral proximal left arm of 10 healthy volunteers by means of hyperspectral imaging. The maximum microcirculatory response to CAP was observed when all components were allowed to interact with skin tissue (standard treatment). In contrast, no upregulation was found as soon as electric currents and fields had been removed from the effective component spectrum. Application of the CAP source at reduced concentrations of reactive species compared to standard treatment led to significant but less pronounced enhancement of dermal microcirculation. The findings of this study indicate that a synergistic interplay of all CAP components promotes microcirculation in dermal tissue most effectively. Moreover, the findings support the hypothesis that electric currents and fields play a key role in enabling microcirculation boost whereas availability of reactive species in the gas phase is associated with the intensity of the tissue response to CAP treatment.

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“…Global economic scenario have changed significantly after the COVID-19 [8]. Governments are forced to spend more on healthcare and high fuel prices, Covid-19 vaccinations development, personal safety and modification in indoor environments to prevent spread of virus was main focus of researchers [41][42][43]. To get back on track, governments must prioritize renewable energy investments to ensure affordable energy access.…”

Section: Introductionmentioning

confidence: 99%

Net Zero Emissions for Our Future Generations through Renewables: A Brief Review

Rathore¹,

Kumar²

2023

IJERA

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Energy is the core of human civilization's development and progress. Global population increase and fast industrialization have led to the imbalanced exploitation of fossil fuels without taking into account their environmental effects. The continuous combustion of fossil fuels, deforestation, and industrial processes has resulted in deterioration of climate. Harmful Greenhouse Gases (GHG) traps the heat leading to an overall rise of earth’s temperature, change in precipitation, and weather events. Climate change poses risk to economies, human societies, and the natural environment. A well-defined urgent measure including the policy changes are needed to be adopted to mitigate its effects. To address this issue, 196 countries agreed to sign the Paris Agreement in 2015, which aims to limit the global reduction in GHG emissions to limit the warming to 1.5 °C above pre-industrial levels. However unique challenges posed by COVID-19 pandemic and slow action of countries is hindering the goals to allow maximum temperature to rise of 1.5 °C by this century (i.e., year 2100). The threat of climate change is real and there is growing recognition among international communities. However, the level of commitment varies across nations and is influenced by a number of variables, including domestic conditions, economic priorities, and political will. Providing accessible and clean energy is a challenge for governments which can be addressed by prioritizing renewable energy investments. Affordable clean energy is crucial for upholding fundamental human rights such as a healthy environment, suitable housing, and access to information. The paper discusses the challenges posed by climate change, role of renewable energy and technological advancements, and necessary actions that are necessary to accomplish the objectives of NZE for our future generations.

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Plasma generated ozone and reactive oxygen species for point of use PPE decontamination system

Cited by 7 publications

References 54 publications

Electron beam technology for Re-processing of personal protective equipment

Electron beam technology for Re-processing of personal protective equipment

Which CAP components are relevant for enhancing dermal microcirculation in intact skin?

Net Zero Emissions for Our Future Generations through Renewables: A Brief Review

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