Abstract: Disclosed are a knock type direct liquid pen refill assembly and a writing pen. The pen refill assembly comprises an ink cylinder assembly (100), a pen tip (200) and an elastic member (300). An ink guide core (150) is provided in the ink cylinder assembly. The pen tip (200) is arranged at one end of the ink cylinder assembly (100). An ink duct (210) is formed inside and passes through the pen tip (200). A ball member (230) is provided at an ink outlet end of the ink duct (210). The ink guide core (150) partially passes through the ink duct (210), and one end of the ink guide core (150) is abutted against the ball member (230). The elastic member (300) is sleeved at the periphery of the ink guide core (150) and positioned inside the ink duct (210).

Abstract: Pressing type writing stationery including: a pen barrel (1), a pen refill (2) and a pressing positioning assembly (3). The pen refill (2) is configured with a pen point (21). The pressing positioning assembly (3) comprises a guide piece (31), a sliding piece (32) and a positioning piece (33), a guide sliding groove (311) is provided on the guide piece (31), and a rotary driving part (312) and a positioning cooperation part (313) are provided in the guide sliding groove (311); the sliding piece (32) is slidably mounted on the guide piece (31) in the length direction of the guide sliding groove (311); the positioning piece (33) is rotatably mounted on the sliding piece (32), and a positioning part (331) is provided on the positioning piece (33); the positioning part (331) is slidably provided in the guide sliding groove (311); and the guide piece (31) is provided in the pen barrel (1), and the sliding piece (32) is connected to the pen refill (2).

Abstract: Pressing type writing stationery including: a pen barrel (1), a pen refill (2) and a pressing positioning assembly (3). The pen refill (2) is configured with a pen point (21). The pressing positioning assembly (3) comprises a guide piece (31), a sliding piece (32) and a positioning piece (33), a guide sliding groove (311) is provided on the guide piece (31), and a rotary driving part (312) and a positioning cooperation part (313) are provided in the guide sliding groove (311); the sliding piece (32) is slidably mounted on the guide piece (31) in the length direction of the guide sliding groove (311); the positioning piece (33) is rotatably mounted on the sliding piece (32), and a positioning part (331) is provided on the positioning piece (33); the positioning part (331) is slidably provided in the guide sliding groove (311); and the guide piece (31) is provided in the pen barrel (1), and the sliding piece (32) is connected to the pen refill (2).

Abstract: Disclosed are a knock type direct liquid pen refill assembly and a writing pen. The pen refill assembly comprises an ink cylinder assembly (100), a pen tip (200) and an elastic member (300). An ink guide core (150) is provided in the ink cylinder assembly. The pen tip (200) is arranged at one end of the ink cylinder assembly (100). An ink duct (210) is formed inside and passes through the pen tip (200). A ball member (230) is provided at an ink outlet end of the ink duct (210). The ink guide core (150) partially passes through the ink duct (210), and one end of the ink guide core (150) is abutted against the ball member (230). The elastic member (300) is sleeved at the periphery of the ink guide core (150) and positioned inside the ink duct (210).

Abstract: Provided is a writing instrument including a pen cap, a pen tip and a pen barrel, wherein the pen tip is arranged at one end of the pen barrel, an ink cartridge configured to store ink is formed at the other end of the pen barrel, and the pen cap able to be removed is provided on the pen barrel for covering the pen tip; wherein the writing instrument further includes: an ink delivery assembly including a first tube body, a second tube body, a liquid guiding column and liquid absorbent cotton, wherein the second tube body is inserted into the first tube body, the liquid guiding column is inserted into the second tube body, the liquid absorbent cotton is arranged inside the first tube body, an inner end of the pen tip is inserted into the first tube body, and an end of the first tube body which is away from the pen tip is opened with a first vent and an end of the second tube body which is close to the pen tip is opened with a second vent; the first tube body is arranged in the pen barrel; an air flow channel i

Abstract: Provided is a writing tool with an anti-drying device, comprising a pen holder (110), a pen tip (1) arranged in the pen holder (110), an ink cartridge (130) and a pressing rod (150). The writing tool with the anti-drying device further comprises an anti-drying device (200), wherein the anti-drying device (200) comprises a switch sleeve (210), a lifting cap (220), a tapping spring (214), a rotatable sealing cap (230), a sealing pad (240) and a support spring (244).

Abstract: Provided is a writing instrument including a pen cap, a pen tip and a pen barrel, wherein the pen tip is arranged at one end of the pen barrel, an ink cartridge configured to store ink is formed at the other end of the pen barrel, and the pen cap able to be removed is provided on the pen barrel for covering the pen tip; wherein the writing instrument further includes: an ink delivery assembly including a first tube body, a second tube body, a liquid guiding column and liquid absorbent cotton, wherein the second tube body is inserted into the first tube body, the liquid guiding column is inserted into the second tube body, the liquid absorbent cotton is arranged inside the first tube body, an inner end of the pen tip is inserted into the first tube body, and an end of the first tube body which is away from the pen tip is opened with a first vent and an end of the second tube body which is close to the pen tip is opened with a second vent; the first tube body is arranged in the pen barrel; an air flow channel i

Abstract: The present disclosure discloses a CT lymph node detection system based on a spatial-temporal recurrent attention mechanism and specifically relates to the field of medical image analysis technologies. Based on a deep convolutional neural network and a recurrent attention mechanism, the present disclosure can construct an attention feature map adaptive to a lesion size in a slice direction and a spatial direction of a lymph node CT sequence.

Abstract: Provided is a writing tool with an anti-drying device, comprising a pen holder (110), a pen tip (1) arranged in the pen holder (110), an ink cartridge (130) and a pressing rod (150). The writing tool with the anti-drying device further comprises an anti-drying device (200), wherein the anti-drying device (200) comprises a switch sleeve (210), a lifting cap (220), a tapping spring (214), a rotatable sealing cap (230), a sealing pad (240) and a support spring (244).

Abstract: The present disclosure discloses a CT lymph node detection system based on a spatial-temporal recurrent attention mechanism and specifically relates to the field of medical image analysis technologies. Based on a deep convolutional neural network and a recurrent attention mechanism, the present disclosure can construct an attention feature map adaptive to a lesion size in a slice direction and a spatial direction of a lymph node CT sequence.

Abstract: The present invention relates to the technical field of visualization in scientific computing, and specifically discloses a ray casting visualization multi-user interaction processing method based on Hadoop and CUDA. On one hand, the method of the present invention employs the parallel processing capability of Hadoop, MapReduce, and NVIDIA CUDA for accelerated rendering, and, on the other hand, the present invention designs a method to avoid duplicate computation for a multi-user interaction environment, thereby reducing the time consumption of duplicate computation. The method of the present invention realizes the fast operation of each pixel gradient, ray resampling and data synthesis and can accomplish the 3D visualization imaging rapidly and efficiently.

Abstract: The present invention relates to the technical field of visualization in scientific computing, and specifically discloses a ray casting visualization multi-user interaction processing method based on Hadoop and CUDA. On one hand, the method of the present invention employs the parallel processing capability of Hadoop, MapReduce, and NVIDIA CUDA for accelerated rendering, and, on the other hand, the present invention designs a method to avoid duplicate computation for a multi-user interaction environment, thereby reducing the time consumption of duplicate computation. The method of the present invention realizes the fast operation of each pixel gradient, ray resampling and data synthesis and can accomplish the 3D visualization imaging rapidly and efficiently.

Abstract: A side knock type mechanical pencil includes a knock button, a barrel, an intermediate lead tube, and a clip. A fixed hole is formed in the side wall of the front end of the barrel, and a rib groove is formed in the inner front side of the fixed hole. At least one button groove is formed in the front end of the knock button, and at least one protrusion or bump with an inclined plane is formed at the lower side of the rear end of the side button. A shaft is formed by the engagement of the button groove of the front end of the button with the rib groove of the fixed hole. At least one circular bulge which is adapted to engage with the protrusion or bump with the inclined plane is disposed on the side of the intermediate lead tube.

Abstract: A side knock type mechanical pencil includes a knock button, a barrel, an intermediate lead tube, and a clip. A fixed hole is formed in the side wall of the front end of the barrel, and a rib groove is formed in the inner front side of the fixed hole. At least one button groove is formed in the front end of the knock button, and at least one protrusion or bump with an inclined plane is formed at the lower side of the rear end of the side button. A shaft is formed by the engagement of the button groove of the front end of the button with the rib groove of the fixed hole. At least one circular bulge which is adapted to engage with the protrusion or bump with the inclined plane is disposed on the side of the intermediate lead tube.