A filter bag is disclosed that comprises a porous membrane having a strength in the transverse direction to improve durability. There is a filter assembly for filtering particulates from a gas stream comprising a support substructure and a filter bag at least partially surrounding the support substructure. The filter bag comprises a porous membrane having a upstream surface exposed to the gas stream. The porous membrane is lightweight and has a structure to collect the particulates on the upstream surface. In particular, the porous membrane has a bubble point of 0.06 MPa or more and has a strength in a transverse direction that is 100 N/m or more. Other filter bags disclosed comprise a laminate comprising a porous membrane having a bubble point of 0.06 MPa or more and a second layer that acts as a sacrificial material.

A reticle storage device includes a top lid having a ceiling and a cover surrounding the ceiling, and a bottom lid having a carrier and a peripheral structure surrounding the carrier. When the top lid engages with the bottom lid, a passage is defined therebetween and therefore the reticle storage device is not sealed.

An air filter assembly for a bicycle is disclosed. The air filter assembly includes a body having a bracket and a frame. The bracket is configured to mount to a bicycle frame. The frame defines a tapered opening having a windward side and a leeward side. The tapered opening is larger on the windward side than on the leeward side. A removable air filter cartridge is mounted within the opening of the frame such that a force acting on the air filter cartridge on the windward side tends to wedge the air filter cartridge in the opening. A foam member is attached to an outer periphery of the air filter cartridge and is disposed between the air filter cartridge and the frame. The foam member is compressible so as to hold the air filter cartridge in the opening of the frame. The foam member compresses to a greater degree on the leeward side of the opening than on the windward side of the opening. The air filter assembly is mountable to a handle bar of a bicycle.

An improved evaporative emission mitigation system for a motor vehicle includes a canister filled with an adsorbent material connected to a membrane module. The membrane module contains a membrane that separates gaseous hydrocarbons from inert air components within fuel vapor generated by the evaporation of fuel due to the heating of the motor vehicle. The gaseous hydrocarbons separated by the membrane are returned to the canister, where they will again be adsorbed by the adsorbent material. The inert air components are vented from the membrane module into the open atmosphere outside of the motor vehicle.

A membrane method processing system and process for a high-concentration salt-containing organic waste liquid incineration exhaust gas is described. The system consists essentially of a waste liquid incinerator (I), a gas-solid separator (II), a heat exchanger (III), an air blower (IV), an anti-caking agent storage tank (V), a membrane method dust cleaner (VI), an induced draft fan (VII), a check valve (VIII), and a desulfurization tower (IX). The present invention introduces the dust collecting membrane into the tail gas treatment system and utilizes the small pore size and high porosity of the dust collecting membrane to prevent inorganic salt particles from entering the internal of the filter material and agglomerating there. When the humidity of the gas entering the dust collector increases during the dust removing process, the anti-caking agent is also introduced into the tail gas treatment system to change the surface structure of the inorganic salt crystal to prevent the crystal from agglomeration.

The present teachings include a fibrous structure including one or more nonwoven layers comprising a fibrous web layer and one or more functional insert layers for providing additional properties to the material. The one or more of the nonwoven layers and one or more functional insert layers may be lapped together to form a vertically lapped structure. The present teachings also include a method of forming the fibrous structure.

The filter medium of the present disclosure includes a polytetrafluoroethylene porous membrane and an air-permeable base layer, has a pressure loss PL.sub.F of less than 40 Pa when air is passed therethrough at a linear velocity of 5.3 cm/sec, and has a collection efficiency CE.sub.F of 65% or more when a linear velocity of a gas to be filtered is set to 5.3 cm/sec and particle diameters of particles to be collected are set to be within a range of 0.3 to 0.5 μm. The filter medium of the present disclosure is a novel filter medium that can replace an electret medium and that can prevent a decrease in collection performance due to water vapor in the air, which is unavoidable in an electret medium.

Systems and methods for cultivating and harvesting algal biomass using cultivation vessels having integrated therewith one or more harvesting systems. Algae cells are cultivated in a cultivation system and concentrated algal biomass is collected using the integrated one or more harvesting systems. The integrated cultivating and harvesting systems reduce costs, energy, and time compared to traditional harvesting methods.

A filter bag is disclosed that comprises a porous membrane having a strength in the transverse direction to improve durability. There is a filter assembly for filtering particulates from a gas stream comprising a support substructure and a filter bag at least partially surrounding the support substructure. The filter bag comprises a porous membrane having a upstream surface exposed to the gas stream. The porous membrane is lightweight and has a structure to collect the particulates on the upstream surface. In particular, the porous membrane has a bubble point of 0.06 MPa or more and has a strength in a transverse direction that is 100 N/m or more. Other filter bags disclosed comprise a laminate comprising a porous membrane having a bubble point of 0.06 MPa or more and a second layer that acts as a sacrificial material.

The disclosure discloses an anti-haze anti-harmful gas air filter membrane as well as a preparation method and application thereof. The air filter membrane comprises a nano fiber membrane made of nano fibers and having a two-dimensional or three-dimensional network structure. The nano fiber membrane can be a high-molecular polymer nano fiber membrane prepared by utilizing an electrostatic spinning process, and can also be doped with an organic or inorganic additive capable of adsorbing and absorbing harmful gases, such as VOCs, NO.sub.x, SO.sub.x and NH.sub.3, in the air and/or a photocatalyst capable of degrading these harmful gases in a photocatalysis manner, or the like. The anti-haze anti-harmful gas air filter membrane disclosed by the disclosure can efficiently filter PM2.5 and PM10 particulate pollutants and the like in the air and simultaneously can efficiently identify and clear multiple harmful gases in the air. The anti-haze anti-harmful gas air filter membrane has a wide application prospect in the field of air purification, for example, can be applied to air purification devices, such as screen windows, gauze masks and filter screens.