Objective:To investigate the effect of a subcutaneous pedicle Limberg flap for the reconstruction of medium-sized skin defects in the face following skin tumor or scar excision. Methods: From August 2002 to June 2004,...Objective:To investigate the effect of a subcutaneous pedicle Limberg flap for the reconstruction of medium-sized skin defects in the face following skin tumor or scar excision. Methods: From August 2002 to June 2004,the subcutaneous pedicle Limberg flap was designed to repair facial skin defects in 17 patients(19 flaps),and the size of the lesions ranged from 2.0 cm×1.9 cm to 5.0 cm×4.5 cm.The operation was performed under general anesthesia in 2 children,and under local anesthesia in the remaining 15 patients. Results: All flaps survived with primary healing postoperatively.With a follow-up from 1 to 22 months,neither short-term nor long-term postoperative complications such as flap necrosis,hematoma,infection,visible dog-ear and trap door deformity were found,and functionally and cosmetically satisfactory outcomes were achieved. Conclusion: This subcutaneous pedicle Limberg flap provides a competitive repair alternative for the treatment of medium-sized skin defects in the face.展开更多
Microscopic analysis of the skin and cuticle of wool fibers in Dubska pramenka show different qualitative parameters. The research study included different parts of the body and the samples of the wool fibers from dif...Microscopic analysis of the skin and cuticle of wool fibers in Dubska pramenka show different qualitative parameters. The research study included different parts of the body and the samples of the wool fibers from different regions of the body. Histological description shows difference in the basic structurers of the skin in Dubska pramenka. A very pronounced thin epidermis, while dermis and hypodermis are more developed on the samples from the shoulder. Cornified flakes-cuticle of the root of the tail was of a fine structure, and comified flakes from the rump showed the features of the rough wool fibers. ＂Transitional form of cuticle＂ was dominant on the shoulder. The qualitative parameters have a significant influence on the overall quality of wool in general, and the research contributes to a greater usability value of the wool and development of livestock farming in areas in a broader sense.展开更多
Wet-resistant flexible electronics have acquired increasing attention on applications in wet environments,such as sweaty skin, rainy weather, biological fluids, and underwater. However, it remains challenging to achie...Wet-resistant flexible electronics have acquired increasing attention on applications in wet environments,such as sweaty skin, rainy weather, biological fluids, and underwater. However, it remains challenging to achieve nonswelling and underwater self-healing hydrogel sensors for the mechanical perception in aqueous solutions. Herein, a selfhealing and non-swellable hydrogel is successfully fabricated,which presents an automatically healing behavior in various aquatic environments, including deionized water, seawater,sweat, alkali and acidic aqueous solutions. Moreover, the hydrogel demonstrates high stretchability and stable electromechanical sensing properties in water. Furthermore, an electronic skin is designed with the features of fast responsiveness, reliability, and high sensitivity for detecting breathing, speaking, coughing, and diverse body movements. The self-healing hydrogel sensors enable a brilliant mechanical sensibility for detecting a series of dynamic stimuli in air and underwater, even after the healing of fracture interface in water. The underwater self-healing and anti-swelling hydrogel would provide enticing potential on various stable electronic devices for aquatic environments, such as implantable electrodes, triboelectric nanogenerators, and underwater soft robotics.展开更多
文摘Objective:To investigate the effect of a subcutaneous pedicle Limberg flap for the reconstruction of medium-sized skin defects in the face following skin tumor or scar excision. Methods: From August 2002 to June 2004,the subcutaneous pedicle Limberg flap was designed to repair facial skin defects in 17 patients(19 flaps),and the size of the lesions ranged from 2.0 cm×1.9 cm to 5.0 cm×4.5 cm.The operation was performed under general anesthesia in 2 children,and under local anesthesia in the remaining 15 patients. Results: All flaps survived with primary healing postoperatively.With a follow-up from 1 to 22 months,neither short-term nor long-term postoperative complications such as flap necrosis,hematoma,infection,visible dog-ear and trap door deformity were found,and functionally and cosmetically satisfactory outcomes were achieved. Conclusion: This subcutaneous pedicle Limberg flap provides a competitive repair alternative for the treatment of medium-sized skin defects in the face.
文摘Microscopic analysis of the skin and cuticle of wool fibers in Dubska pramenka show different qualitative parameters. The research study included different parts of the body and the samples of the wool fibers from different regions of the body. Histological description shows difference in the basic structurers of the skin in Dubska pramenka. A very pronounced thin epidermis, while dermis and hypodermis are more developed on the samples from the shoulder. Cornified flakes-cuticle of the root of the tail was of a fine structure, and comified flakes from the rump showed the features of the rough wool fibers. ＂Transitional form of cuticle＂ was dominant on the shoulder. The qualitative parameters have a significant influence on the overall quality of wool in general, and the research contributes to a greater usability value of the wool and development of livestock farming in areas in a broader sense.
基金supported by the National Natural Science Foundation of China (51873024)the grant from Science and Technology Department of Jilin Province (20200708102YY)。
文摘Wet-resistant flexible electronics have acquired increasing attention on applications in wet environments,such as sweaty skin, rainy weather, biological fluids, and underwater. However, it remains challenging to achieve nonswelling and underwater self-healing hydrogel sensors for the mechanical perception in aqueous solutions. Herein, a selfhealing and non-swellable hydrogel is successfully fabricated,which presents an automatically healing behavior in various aquatic environments, including deionized water, seawater,sweat, alkali and acidic aqueous solutions. Moreover, the hydrogel demonstrates high stretchability and stable electromechanical sensing properties in water. Furthermore, an electronic skin is designed with the features of fast responsiveness, reliability, and high sensitivity for detecting breathing, speaking, coughing, and diverse body movements. The self-healing hydrogel sensors enable a brilliant mechanical sensibility for detecting a series of dynamic stimuli in air and underwater, even after the healing of fracture interface in water. The underwater self-healing and anti-swelling hydrogel would provide enticing potential on various stable electronic devices for aquatic environments, such as implantable electrodes, triboelectric nanogenerators, and underwater soft robotics.
