Abstract: Provided are Streptococcus thermophilus for producing ?-aminobutyric acid and an application thereof. The Streptococcus thermophilus for producing ?-aminobutyric acid is named Streptococcus thermophilus ST 36 and is preserved in the Institute of Microbiology of the Chinese Academy of Sciences, the preservation number being CGMCC NO. 20676, and the preservation date being 18 Sep. 2020. Also provided are a screening method for Streptococcus thermophilus for producing ?-aminobutyric acid, a preparation method for a dairy product containing ?-aminobutyric acid, and a dairy product containing ?-aminobutyric acid prepared by using the preparation method. The Streptococcus thermophilus for producing ?-aminobutyric acid has strong ?-aminobutyric acid synthesis capability and short fermentation time, and the prepared dairy product contains rich ?-aminobutyric acid.

Abstract: A device for obtaining water from air on an island includes: a concentrated solution air water obtaining system, a solar collector, a dilute solution dehydration system, a heat pump system, a solution heating system, and a water purification system. Humid air is introduced into the concentrated solution air water obtaining system, which performs a heat and mass transfer into a dilute solution and relatively low-temperature dry air. This air is used as interior fresh air. The diluted solution is heated by the solar collector, delivered to the dilute solution dehydration system, and sent to the solution heating system for heating and evaporating into water vapor. The water purification system cools, purifies, filters and stores the water vapor. At the same time, the heat pump system introduces heated humid air into the dilute solution dehydration system to recover heat contained in the heated humid air, and to extract water.

Abstract: A device for obtaining water from air on an island includes: a concentrated solution air water obtaining system, a solar collector, a dilute solution dehydration system, a heat pump system, a solution heating system, and a water purification system. Humid air is introduced into the concentrated solution air water obtaining system, which performs a heat and mass transfer into a dilute solution and relatively low-temperature dry air. This air is used as interior fresh air. The diluted solution is heated by the solar collector, delivered to the dilute solution dehydration system, and sent to the solution heating system for heating and evaporating into water vapor. The water purification system cools, purifies, filters and stores the water vapor. At the same time, the heat pump system introduces heated humid air into the dilute solution dehydration system to recover heat contained in the heated humid air, and to extract water.

Abstract: The invention provides an antenna for wireless devices which improves matching of the main antenna element and parasitic antenna element in the antenna. The antenna of the invention comprises a main antenna element and a parasitic antenna element, the main antenna element and the parasitic antenna element being separated from each other, a matching element is connected between the main antenna element and the parasitic antenna element, with an end of the matching element being electrically connected to a conductor strip of the main antenna element, and the other end being electrically connected to a conductor strip of the parasitic antenna element. Optimized antenna performance can be achieved by adjusting position and value of the matching element.