An air filter includes a first urethane portion made of polyurethane foam and having air permeability and a second urethane portion made of polyurethane foam and disposed so as to overlap with a part of the first urethane portion. The second urethane portion is higher in density than the first urethane portion. The first urethane portion and the second urethane portion are integrated with each other in a state where the second urethane portion is incorporated in the part of the first urethane portion.

An air filter includes a first urethane portion made of polyurethane foam and having air permeability and a second urethane portion made of polyurethane foam and disposed so as to overlap with a part of the first urethane portion. The second urethane portion is higher in density than the first urethane portion. The first urethane portion and the second urethane portion are integrated with each other in a state where the second urethane portion is incorporated in the part of the first urethane portion.

A hydraulic fracturing system for fracturing a subterranean formation includes a support structure that includes an electric powered pump, arranged in a first area, the electric powered pump powered by at least one electric motor, also arranged in the first area. The system further includes a variable frequency drive (VFD), arranged in a second area proximate the first area, connected to the at least one electric motor to control the speed of the at least one electric motor. The system includes a transformer, arranged in a third area proximate the second area. The system also includes a slide out platform integrated into the first area, the slide out platform being driven between a retracted position and a deployed position.

A hydraulic fracturing system for fracturing a subterranean formation includes a support structure that includes an electric powered pump, arranged in a first area, the electric powered pump powered by at least one electric motor, also arranged in the first area. The system further includes a variable frequency drive (VFD), arranged in a second area proximate the first area, connected to the at least one electric motor to control the speed of the at least one electric motor. The system includes a transformer, arranged in a third area proximate the second area. The system also includes a slide out platform integrated into the first area, the slide out platform being driven between a retracted position and a deployed position.

An air filter assembly comprises a housing, a filter element and a permeable baffle. The housing comprises an outer wall with a substantially cylindrical inner surface, an inlet, and an outlet. The inlet is positioned along and extends through the outer wall. The outlet is positioned along and extends through an axial end of the housing. The filter element comprises a filter media with a substantially cylindrical outer surface. The filter element is positionable within the housing. The permeable baffle is positioned between the inlet and the filter element. The permeable baffle allows at least some air to flow therethrough.

An air filter assembly comprises a housing, a filter element and a permeable baffle. The housing comprises an outer wall with a substantially cylindrical inner surface, an inlet, and an outlet. The inlet is positioned along and extends through the outer wall. The outlet is positioned along and extends through an axial end of the housing. The filter element comprises a filter media with a substantially cylindrical outer surface. The filter element is positionable within the housing. The permeable baffle is positioned between the inlet and the filter element. The permeable baffle allows at least some air to flow therethrough.

Filter media and filters, such as air filters, face masks, gas turbine and compressor air intake filters, panel filters and the like, are provided that include nanoparticles dispersed throughout at least a portion of the filter media. A filter media comprises a fiber substrate with a first surface and an opposing second surface. The filter media includes nanoparticles disposed within the fiber substrate at least between the first and second surfaces such that an area density of the nanoparticles decreases from the first surface towards the second surface. This density gradient formed by the nanoparticles through at least a portion of the substrate improves the performance characteristics of the filter. The nanoparticles increase the overall surface area within the fiber substrate, which may increase its filtration efficiency and allows for the capture of submicron contaminants without significantly compromising other factors, such as pressure drop or air flow through the filter.

Filter media and filters, such as air filters, face masks, gas turbine and compressor air intake filters, panel filters and the like, are provided that include nanoparticles dispersed throughout at least a portion of the filter media. A filter media comprises a fiber substrate with a first surface and an opposing second surface. The filter media includes nanoparticles disposed within the fiber substrate at least between the first and second surfaces such that an area density of the nanoparticles decreases from the first surface towards the second surface. This density gradient formed by the nanoparticles through at least a portion of the substrate improves the performance characteristics of the filter. The nanoparticles increase the overall surface area within the fiber substrate, which may increase its filtration efficiency and allows for the capture of submicron contaminants without significantly compromising other factors, such as pressure drop or air flow through the filter.

The Kachina Aholi is a device invented out of three main components. The three components are: a drone or other aerial load lifting apparatus, a air filter (varying in the passage intensity of molecular material, graded filters) and a Super or Ultra hydrophobic spray (e.g. WATERBEADER™). These three components combined make a device that is flown up to clouds that are dense with water molecules and “bead” those molecules up along the air filter and cause premature precipitation. This method of premature precipitation can be used to irrigate farms, prevent flash floods, prevent landslides, wildfire prevention or reduction, increase accessibility in low water/dry areas, and climate control.

The Kachina Aholi is a device invented out of three main components. The three components are: a drone or other aerial load lifting apparatus, a air filter (varying in the passage intensity of molecular material, graded filters) and a Super or Ultra hydrophobic spray (e.g. WATERBEADER™). These three components combined make a device that is flown up to clouds that are dense with water molecules and “bead” those molecules up along the air filter and cause premature precipitation. This method of premature precipitation can be used to irrigate farms, prevent flash floods, prevent landslides, wildfire prevention or reduction, increase accessibility in low water/dry areas, and climate control.