The disclosed embodiments relate to the design of a preconcentrator system for preconcentrating air samples. This preconcentrator system includes a plurality of preconcentrators that preconcentrate the air samples prior to chemical analysis, and a delivery structure comprising a manifold that selectively routes a sample airflow to the plurality of concentrators so that the plurality of preconcentrators receive a sample airflow concurrently or individually.

A controlled atmosphere system for a cargo storage space, the system comprising a separation area for receiving atmospheric gas from the cargo storage space, a gas moving device arranged to move atmospheric gas from the cargo storage space into the separation area to thereby increase a pressure within the separation area, and a molecular sieve arranged in communication with the separation area, such that when the separation area is at an overpressure, selected molecules are vented out of the separation area through the molecular sieve.

Sorbent sheets containing sorbent and binder may be used for efficient adsorption and desorption of low-density hydrocarbons to the sorbent, such as activated carbon, therein. One or more sheets, optionally arranged in a multi-layered configuration, may be included in a housing for improved storage and transportation of low-density hydrocarbons such as natural gas.

Oxygen-absorbing resin composition comprising a polyester containing a constitutional unit (a) comprising tetralin ring structure, for example, an alkyl tetralin dicarboxylate, wherein the alkyl component has, for example, from 2 to 6 carbon atoms, and a constitutional unit (b) derived from a polyfunctional compound, selected from glycerin, trimethylol propane, pentaerythritol, trimellitic acid, trimellitic acid anhydride, pyromellitic acid, and pyromellitic acid anhydride, and a transition metal catalyst.

The present disclosure is directed to a method of maintaining pressure within a compressed fuel storage system. The method may include compressing a fuel source with a compressor; directing fuel from the compressor to a first fuel reservoir; determining that the first fuel reservoir has reached a target fill pressure; transiting from the first fuel reservoir to a second fuel reservoir by redirecting the fuel to the second fuel reservoir; and opening a flow limiting valve to limit the rate of pressure change of the compressor to an allowable rate of pressure change when transitioning from the first fuel reservoir to the second fuel reservoir.

A cap with refill capability and the ability to track various aspects of the tote, cap, and equipment has been developed for use on chemical totes. It provides the ability to refill the tote without removing the cap and remove water from the fluid and air in the hose.

A system and method to supply nitrogen gas is provided. Ambient air is compressed and stored in a storage receiver and then nitrogen is separated from the compressed air in a nitrogen membrane separation unit. The separated nitrogen is stored in a nitrogen storage tank under pressure and released through a pressure control valve. The system is confined to a small footprint and is useful as a nitrogen source where conventional compressed nitrogen tanks are a safety or space issue. Systems to prepare nitrogen infused beverages are also provided.

A metal-organic framework (MOF) structure comprising at least one metal ion and at least one multidentate organic ligand which is coordinately bonded to said metal ion, and a scaffold.

A food freshness maintenance system is proposed. The system may include a chamber configured to accommodate food and a freshness maintenance device installed in the chamber. The freshness maintenance device may include a main body including an inlet through which air flows in and an outlet through which the air is discharged. The freshness maintenance device may also include an electromagnetic wave module, installed at the inlet of the main body, for ionizing food freshness reducing materials included in the air by emitting electromagnetic waves to the air. The device may further include a collection module, installed at the outlet of the main body, for collecting the ionized food freshness reducing materials from the air.

B&A: 4053.022PCT1 KAUST: 2014-099-02 26 ABSTRACT Embodiments provide a method of storing a compound using a metal organic framework (MOF). The method includes contacting one or more MOFs with a fluid and sorbing one or more compounds, such as O2 and CH4. O2 and CH4 can be sorbed simultaneously or in series. The metal organic framework can be an M-soc-MOF, wherein M can include aluminum, iron, gallium, indium, vanadium, chromium, titanium, or scandium.