Abstract: Disclosed is an oxygen-control freshness preservation refrigerator, comprising a cabinet with a refrigerating compartment and a freezing compartment. A partition plate for separating the refrigerating compartment from the freezing compartment is arranged in the cabinet. The refrigerator further has a freshness preservation compartment arranged inside the refrigerating compartment and an oxygen control device for reducing the oxygen content inside the freshness preservation compartment, the oxygen control device comprises a gas-regulating membrane assembly and a gas extraction assembly. The gas-regulating membrane assembly has at least one gas-regulating membrane for selective gas permeation.

Abstract: The present invention discloses a seal including a buckling portion. The buckling portion is composed of two H-shaped members that are flexibly connected. The two H-shaped members can be buckled with each other to form a mounted state. The H-shaped member has a first arm and a second arm which are parallel to each other, and a connecting portion which connects the first arm and the second arm. The connecting portion has an arcuate surface. The arcuate surfaces of the two H-shaped members cooperatively define a hollow cavity when the two H-shaped members are in the mounted state. The present invention further discloses a vacuum assembly and a refrigerator which comprise the seal described above.

Abstract: The present invention provides a PVT heat pump system capable of achieving day-night time-shared combined cooling, heating and power using solar radiation and sky cold radiation. The system utilizes a photovoltaic power generation technology and a PVT heat pump technology simultaneously, both of which are relatively independent and promoted to each other in the function. The main energy sources of the system are solar radiation energy and sky long-wave cold radiation energy, and the energy is respectively transformed into electric energy, thermal energy and cold energy via a PVT photoelectric-evaporation/condensation module at different times in different working modes.

Abstract: Provided is a retinal detachment eye pillow comprising a headrest and a sit-sleeping support for use when sitting in a chair, wherein the headrest receives a user's head; the headrest can be directly placed on the upright sleeping support for use or can also be taken from the upright sleeping support for a patient to use on a bed for prone sleeping; the method for converting use of the headrest: from the upright sleeping support to the bed for prone sleeping is moving the headrest up and detaching it from the upright sleeping support, and putting the headrest on the bed or a bedside tool, such that the patient can sleep on the bed in a prone posture using the headrest; the method for converting use of the headrest from the bed for prone sleeping to the upright sleeping support is picking up the headrest: from the bed or the bedside tool to align it with and putting it down on the upright sleeper support, such that the patient can use the headrest on the upright sleeping support.

Abstract: An easy to operate sleep support frame for travelling is disclosed. The support frame includes a movable and curved chest rod which can move from a passenger's chest to the bottom of the seat; a chest cushion connected with the chest rod; and a headrest connected with the chest rod. The headrest can be placed in the back of the front seat or above the chest rod. The chest rod includes a circular arc segment with meshing gear teeth on the inner circular arc side of the chest rod. One end of the chest rod goes through the driving gear box under the seat to be driven by a driving gear box. The passenger can press a button to drive motors to raise chest cushion, and press the button to lower the chest cushion to be close to the seat bottom if the chest cushion is not used.

Abstract: Provided in the present invention is a method for positioning and integrating transgene and a use thereof. Specifically provided is a variant loxP element. The sequence “ATAAT” of an reverse repeated sequence in a wild type loxp locus is mutated into “CACCT”, i.e., a variant loxp element. Also provided in the present invention are a construct comprising the variant loxP element, a vector or host cell comprising the construct and a method for preparing a transgenic animal using the vector and the host cell.

Abstract: An easy to operate sleep support frame for travelling is disclosed. The support frame includes a movable and curved chest rod which can move from a passenger's chest to the bottom of the seat; a chest cushion connected with the chest rod; and a headrest connected with the chest rod. The headrest can be placed in the back of the front seat or above the chest rod. The chest rod includes a circular arc segment with meshing gear teeth on the inner circular arc side of the chest rod. One end of the chest rod goes through the driving gear box under the seat to be driven by a driving gear box. The passenger can press a button to drive motors to raise chest cushion, and press the button to lower the chest cushion to be close to the seat bottom if the chest cushion is not used.

Abstract: Provided in the present invention is a method for positioning and integrating transgene and a use thereof. Specifically provided is a variant loxP element. The sequence “ATAAT” of an reverse repeated sequence in a wild type loxp locus is mutated into “CACCT”, i.e., a variant loxp element. Also provided in the present invention are a construct comprising the variant loxP element, a vector or host cell comprising the construct and a method for preparing a transgenic animal using the vector and the host cell.

Abstract: A portable luggage case system facilitating user to rest, includes a container to store stuff; several wheels under the container; a length-adjustable pull rod; a height-adjustable headrest to support the head. in addition, it includes a height-adjustable seat plate, a seat is underlaid with one end of the seat plate, and the other end is connected to the container or to an accessory thereof. A seat plate rod used to connect seat plate is placed in the rear of the container or behind the container; the surface pattern of the seat plate rod is helical thread, there are matching threads on the connection part of seat plate to seat plate rod. The advantages of present invention are that it can be used more widely, attract more target customers and marketing become easier than sleeping support frame because this invention is attached to a portable luggage case, popular product.

Abstract: An easy to operate sleep support frame for travelling is disclosed. The support frame includes a movable and curved chest rod which can move from a passenger's chest to the bottom of the seat; a chest cushion connected with the chest rod; and a headrest connected with the chest rod. The headrest can be placed in the back of the front seat or above the chest rod. The chest rod includes a circular arc segment with meshing gear teeth on the inner circular arc side of the chest rod. One end of the chest rod goes through the driving gear box under the seat to be driven by a driving gear box. The passenger can press a button to drive motors to raise chest cushion, and press the button to lower the chest cushion to be close to the seat bottom if the chest cushion is not used.