Abstract: The present disclosure provides a foldable tent, having column assemblies and top rod assemblies, and the top rod assemblies have first top rods, second top rods and overhanging rods, inner end portions of the first top rods are rotatably connected with each other, outer end portions of the first top rods and inner end portions of the second top rods are rotatably connected, and outer end portions of the second top rods, inner end portions of the overhanging rods and upper end portions of the column assemblies are rotatably connected via two axles or coaxially rotatably connected; each of the top rod assemblies further comprises transmission members connected between the first top rods and the overhanging rods for unfolding or folding the overhanging rods and the first top rods.

Abstract: A foldable tent having a tent frame and tent cloth. The tent frame includes a top frame, cross beams, and stand columns connected below the top frame. The top frame includes top rods. Each top rod includes at least one branch rod. Each cross beam includes at least one cross rod. Each stand column includes at least one branch tube. There is a storage cavity within each branch tube. Each branch tube has at least one open end and is capable of storing at least one cross rod and/or at least one branch rod. The tent frame includes an unfolded state and a folded state. When the tent is in the folded state, the cross rods and the branch rods are stored in the storage cavities of the branch tubes.

Abstract: 10H-phenothiazine derivatives capable of inhibiting ferroptosis has structural formula (I). The derivatives, pharmaceutically acceptable salts thereof, crystal forms thereof, or solvates thereof exhibit inhibitory effect on ferroptosis, and therapeutic effect on a rat model of focal cerebral ischemia and thus can be used as a main active ingredient in the preparation of ferroptosis inhibitors. The compounds and the inhibitors prepared by the compounds have good medicinal potential and are expected to be used as drug candidates for the treatment of stroke.

Abstract: Disclosed is a tent comprising at least three telescopic stand columns. Each telescopic stand column comprises an inner tube and an outer tube sleevedly connected to each other, and a lock mechanism fixing the inner tube and the outer tube together. The inner tube has an open end portion inserted to the outer tube, and at least one side wall of the open end portion is opened with a strip-shaped opening. The lock mechanism comprises a tensioning component providing a tension to expand the open end portion outward along a direction perpendicular to a length direction of the inner tube, and a matching assembly fixed to the open end portion to fit with the tensioning component. Operation holes corresponding to the tensioning component are provided on side walls of the inner tube and outer tube.

Abstract: Disclosed are a telescopic stand column and a tent having same. The telescopic stand column comprises an inner tube and an outer tube sleevedly connected to each other, and a lock mechanism fixing the inner tube and the outer tube together. The inner tube has an open end portion inserted to the outer tube, and at least one side wall of the open end portion is opened with a strip-shaped opening. The lock mechanism comprises a tensioning component providing a tension to expand the open end portion outward along a direction perpendicular to a length direction of the inner tube, and a matching assembly fixed to the open end portion to fit with the tensioning component. Operation holes corresponding to the tensioning component are provided on side walls of the inner tube and outer tube. The telescopic stand column of the present disclosure facilitates operation, and increases a load-carrying capacity.

Abstract: A multiple rod linkage structure includes at least a first rod piece and a second rod piece which are muff-coupled. The first rod piece having a rod opening end sleeved within the second rod piece, and a rod strip opening being opened on a sidewall of the rod opening end. A locking element is connected between the first rod piece and the second rod piece, movably passes through a sidewall of the second rod piece and a sidewall of the first rod piece from outside to inside, is screw-thread fitted with a sidewall of the first rod piece, and then presses against another sidewall of the first rod piece. A tent uses the multiple rod linkage structure as a beam and/or a top rod.

Abstract: A collapsible canopy frame with an improved locking mechanism. The collapsible canopy frame has at least three supporting legs. The collapsible canopy frame also has a central lock that is used for locking the collapsible canopy frame in an unfolded state and permits the collapsible canopy frame to be folded into a folded state when the central lock is unlocked. An outer retractable unit is connected between each adjacent supporting leg. An inner retractable unit having an inner end is connected between each supporting leg and the central lock. The inner end of the inner retractable unit is connected through the central lock.

Abstract: The present disclosure provides a foldable tent, comprising column assemblies and top rod assemblies, and the top rod assemblies comprise first top rods, second top rods and overhanging rods, inner end portions of the first top rods are rotatably connected with each other, outer end portions of the first top rods and inner end portions of the second top rods are rotatably connected, and outer end portions of the second top rods, inner end portions of the overhanging rods and upper end portions of the column assemblies are rotatably connected via two axles or coaxially rotatably connected; each of the top rod assemblies further comprises transmission members connected between the first top rods and the overhanging rods for unfolding or folding the overhanging rods and the first top rods.

Abstract: A collapsible canopy with an improved locking mechanism. The collapsible canopy has at least three supporting legs. The collapsible canopy also has a self-locking central lock that is used for locking the collapsible canopy in an unfolded state and permits the collapsible canopy to be folded into a folded state when the central lock is unlocked. An outer retractable unit is connected between each adjacent supporting leg. An inner retractable unit having an inner end is connected between each supporting leg and the central lock. The inner end of the inner retractable unit is connected through the central lock.

Abstract: The present disclosure relates to a foldable tent, and the tent comprises a tent frame and tent cloth, the tent frame comprises a top frame, cross beams, and at least three stand columns connected below the top frame; the top frame comprises a plurality of top rods that can be detached from each other, and the top rod comprises at least one branch rod; the cross beam comprises at least one cross rod; the stand column comprises at least one branch tube, and within the branch tube is formed a storage cavity with at least one open end and capable of storing at least one cross rod and/or at least one branch rod; the tent frame comprises an unfolded state and a folded state, and when the tent is in the folded state, the cross rods and the branch rods are stored in the storage cavities of the branch tubes. After the tent is completely folded, only the branch tubes and some other parts can be seen, not all the rod members can be exposed, the occupied space is small, and simple and beautiful effects are achieved.

Abstract: A multiple rod linkage structure includes at least a first rod piece and a second rod piece which are muff-coupled. The first rod piece having a rod opening end sleeved within the second rod piece, and a rod strip opening being opened on a sidewall of the rod opening end. A locking element is connected between the first rod piece and the second rod piece, movably passes through a sidewall of the second rod piece and a sidewall of the first rod piece from outside to inside, is screw-thread fitted with a sidewall of the first rod piece, and then presses against another sidewall of the first rod piece. A tent uses the multiple rod linkage structure as a beam and/or a top rod.

Abstract: Disclosed are a telescopic stand column and a tent having same. The telescopic stand column comprises an inner tube and an outer tube sleevedly connected to each other, and a lock mechanism fixing the inner tube and the outer tube together. The inner tube has an open end portion inserted to the outer tube, and at least one side wall of the open end portion is opened with a strip-shaped opening. The lock mechanism comprises a tensioning component providing a tension to expand the open end portion outward along a direction perpendicular to a length direction of the inner tube, and a matching assembly fixed to the open end portion to fit with the tensioning component. Operation holes corresponding to the tensioning component are provided on side walls of the inner tube and outer tube.

Abstract: A wheeled collapsible canopy with foldable support frame. The wheeled collapsible canopy includes at least two wheeled legs and also at least two non-wheeled legs. A protective cover covers the top of the collapsible canopy when the collapsible canopy is in a folded state. The protective cover extends only partially down the length of the folded support frame.

Abstract: A collapsible canopy with an improved locking mechanism. The collapsible canopy has at least three supporting legs. The collapsible canopy also has a central lock that is used for locking the collapsible canopy in an unfolded state and permits the collapsible canopy to be folded into a folded state when the central lock is unlocked. An outer retractable unit is connected between each adjacent supporting leg. An inner retractable unit having an inner end is connected between each supporting leg and the central lock. The inner end of the inner retractable unit is connected through the central lock. Reinforcement bars are pivotally connected between the outer retractable units and the inner retractable units, the reinforcement bars function to maintain the shape of the collapsible canopy when the collapsible canopy is in a locked and unfolded position.

Abstract: A central lock comprises a center pole (2), a center top cap (1), and a center bottom cap (3). A locking piece (4) is received in the center bottom cap (3); a first through hole (41) is provided in the locking piece (4); and the end part of the center pole (2) is provided with a clamping groove (21) and a clamp locking part (22) located at the lower end of the clamping groove (21). When the central lock is in a locked state, the locking piece (4) is clamped with the clamping groove (21) of the center pole (2), and the locking part (22) abuts against a lower end surface of the locking piece (4); and when the central lock is in an unlocked state, the locking piece (4) is separated from the clamping groove (21), and the clamp locking part (22) can pass through the first through hole (41).

Abstract: The present invention relates to the field of chemical and medicine, more particularly, 3-ethynylpyrazolopyrimidine derivatives and their preparation methods and uses. The invention provides a 3-ethynylpyrazolopyrimidine derivative, and the structure is shown in formula I. The present invention also provides preparation methods and use of 3-ethynylpyrazolopyrimidine derivatives, comprising the compounds and derivatives, and their pharmaceutical compositions for the use of the treatment and prevention of tumors.

Abstract: A collapsible canopy with an improved locking mechanism. The collapsible canopy has at least three supporting legs. The collapsible canopy also has a self-locking central lock that is used for locking the collapsible canopy in an unfolded state and permits the collapsible canopy to be folded into a folded state when the central lock is unlocked. An outer retractable unit is connected between each adjacent supporting leg. An inner retractable unit having an inner end is connected between each supporting leg and the central lock. The inner end of the inner retractable unit is connected through the central lock.

Abstract: A central lock comprises a center pole (2), a center top cap (1), and a center bottom cap (3). A locking piece (4) is received in the center bottom cap (3); a first through hole (41) is provided in the locking piece (4); and the end part of the center pole (2) is provided with a clamping groove (21) and a clamp locking part (22) located at the lower end of the clamping groove (21). When the central lock is in a locked state, the locking piece (4) is clamped with the clamping groove (21) of the center pole (2), and the locking part (22) abuts against a lower end surface of the locking piece (4); and when the central lock is in an unlocked state, the locking piece (4) is separated from the clamping groove (21), and the clamp locking part (22) can pass through the first through hole (41).