Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 15 of 15 for “"Air--Purification"”.
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Dynamic Botanical Filtration System for Indoor Air Purification
<p>A dynamic botanical air filtration (DBAF) system was developed, tested and modeled for indoor air purification. The DBAF system consisted of an activated-carbon/hydroculture-based root bed for potted-plant, a fan for driving air through the root bed for purification, and an irrigation system for …
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HIGH POWER ALGAN BASED DEEP UV LED LAMPS: DESIGN, FABRICATION AND CHARACTERIZATION
… nm are used in many applications including water/air purification, analytical scientific instrumentation, bio-agent detection systems, and emerging medical instrumentation. Current UV-LEDs are limited in the market penetration due to the relatively low output power and quantum efficiency despite …
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Bench-scale evaluation of an energy efficient acoustic aerosol purification device with a newly designed bioaerosol testing and evaluation chamber
The most common method to purify building air of particulate matter is fabric filtration that can cause a large pressure drop, resulting in high-energy use for adequate protection. Facilities requiring advanced protection against particulate matter typically utilize high efficiency particulate air …
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Doping of Metal Organic Framework (UiO) and for N02 adsorption at ambient Conditions
… concerns have led to the development of various air purification technologies. Nitrogen dioxide NO2 is one of the toxic gases in the atmosphere that is corrosive; it causes severe damage to materials, even at low concentrations. Research on the adsorption of this gas at atmospheric pressure and …
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Measurement of Thermal Impedance of Deep Ultraviolet Light Emitting Diodes
… numerous potential applications in water and air purification, food sterilization, ultraviolet curing, chemical and biological sensors, and medical instrumentation. However, DUV LEDs, with peak emission wavelength between 250 and 320 nm, are prone to self-heating. This rise in temperature …
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Structural and Morphological Analyses of Aln and Algan Layers
… lamps, used in the applications of water and air purification, germicidal and biomedical instrumentation systems and others. Due to the lack of native substrates, sapphire is being used most abundantly for growing III-nitride based deep-UV device structures. Due to highly lattice mismatched …
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Packaging designs for ultraviolet light emitting diodes
… enable key emerging technologies such as water/air purification and sterilization, covert communications and portable bio-agent detection/identification systems for homeland security, and surface and medical device sterilization. These devices produce a large amount of undesired heat due to low …
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CO2 Adsorption on Polyethylenimine-Impregnated Lamellar Silica
… demand the use of efficient methods for air purification. Moreover, the alarming effect of greenhouse gases on the world climate requires the removal and sequestration of large quantities of anthropogenic carbon dioxide (CO2). This work is contributed towards the development of efficient, …
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Soft Sensing-Driven CO<sub>2</sub> Predictive Models in Educational Buildings
Indoor Air Quality (IAQ) plays a vital role in occupant well-being. Among various factors, CO2 concentration impacts the productivity and cognitive functions of occupants. Different strategies can be utilized to improve IAQ, including context-aware ventilation, air purification technologies, and …
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The impacts and management of outdoor-sourced PM2.5 in New Delhi's buildings : a simulation approach
… of ventilation control strategies and air purification to reduce indoor PM2.5 concentrations have not been examined in detail. This gap is mirrored in the lack of enforcement of standards for indoor air quality and ventilation in India. In this work, a multi-zone building simulation …
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Dust and its control
Thesis (B.S.)--Michigan State College of Agriculture and Applied Science, 1936
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Fundamental Understanding of NOx Sequestration Capacity And Pathways in Nano-TiO2 Engineered Cementitious Materials
… nanoparticles into cementitious materials. Air purification by TiO2-based cementitious materials occurs by photocatalysts that capture nitrogen oxide species (NOx) from the atmosphere, then oxidizing them into nitrite and nitrate species. Because nitrite- and nitrate-based corrosion …
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A framework for determining remote sensing capabilities for ecosystem services valuation
Nature provides vital services—clean water, air purification, and climate regulation—to human societies thanks to the "natural capital" like forests and lakes on our planet. Accurately measuring and valuing these ecosystem services is crucial for informed economic and development decisions. Remote …
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SYNTHESIS OF EFFICIENT PHOTOCATALYSTS IN EXTREME TEMPERATURE CONDITIONS FOR THE DEGRADATION OF AIR POLLUTANTS.
… and a rapid recombination rate of electron-hole pairs hinder its light absorption and overall photocatalytic performance. To overcome these challenges, this study proposes an innovative design strategy for strontium titanate (STO), a material with a similar energy band gap to TiO2 but offering …
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New Photocatalytic Nanocomposites Layered on Building Substrates for the Abatement of Xenobiotic [PollutantsNuovi Nanocompositi Fotocatalitici Depositati su Cemento per l’Abbattimento di Inquinanti Xenobiotici]
Gli inquinanti xenobiotici derivano dalla produzione su larga scala di composti sintetici usati per scopi industriali, agricoli e domestici. Questi rappresentano alcuni degli inquinanti più insidiosi, essendo responsabili di danni alla salute umana (malattie respiratorie, alterazioni delle …