Double - faced iso - object embroidery is carried out byusing the uneven intercalated stitch crafts of the parallel- lines stitch as a main body, being accompanied by oth-er stitch crafts and miscellaneous stitches, d...Double - faced iso - object embroidery is carried out byusing the uneven intercalated stitch crafts of the parallel- lines stitch as a main body, being accompanied by oth-er stitch crafts and miscellaneous stitches, done on thesame textile material. This paper deals with the flower -bird double - faced embroidery fan of the Qing Dynasty,from pattern design, stitching formation and techniqueof color arrangement, describes the possible way of mak-ing double - faced embroidery with iso - object effectboth in the front and in the back.展开更多
Interface imperfection can significantly affect the mechanical properties and failure mechanisms as well as the strength and toughness of nanocomposites. The elastic behavior of a screw dislocation in nanoscale coatin...Interface imperfection can significantly affect the mechanical properties and failure mechanisms as well as the strength and toughness of nanocomposites. The elastic behavior of a screw dislocation in nanoscale coating with imperfect interface is studied in the three-phase composite cylinder model. The interface between inner nanoin- homogeneity and intermediate coating is assumed as perfectly bonded. The bonding between intermediate coating and outer matrix is considered to be imperfect with the assumption that interface imperfection is uniform, and a linear spring model is adopted to describe the weakness of imperfect interface. The explicit expression for image force acting on dislocation is obtained by means of a complex variable method. The analytic results indicate that inner interface effect and outer interface imperfection, simultaneously taken into account, would influence greatly image force, equilibrium position and stability of dislocation, and various critical parameters that would change dislocation stability. The weaker interface is a very strong trap for glide dislocation and, thus, a more effective barrier for slip transmission.展开更多
Studies of repetition priming have found two face-sensitive event-related potential(ERP) components:the N250 r showing positive deflection at frontal region and negative deflection at temporal region, and the N400 sho...Studies of repetition priming have found two face-sensitive event-related potential(ERP) components:the N250 r showing positive deflection at frontal region and negative deflection at temporal region, and the N400 showing positive deflection at frontal and centro-parietal regions, both of which depend in part upon the presence or absence of a pre-existing face representation. However, the N250 r is rarely reported for a repetition interval between immediate repetition and 3 min; in addition, whether different types of representations function in the same way is also of interest. The goal of the present experiment is to compare the ERP patterns for faces versus letter strings as a function of the pre-existing memory representation with a repetition interval of 1.5 min on average. We found reliable frontally positive N250 r and N400 for famous faces and words; marginally significant effects for pseudo-words;and only the centro-parietal N400 for unfamiliar faces.Collectively, the N250 r persists in the present intermediate intervals, and both the frontal N250 r and the frontal N400 are domain-general, sensitive to the pre-existing memory representation.展开更多
Objectives To develop a simple, accurate and reproducible method, which combines macro and histopathological techniques for determining the degree of lipid deposition in genetically modified mice. Method The entire a...Objectives To develop a simple, accurate and reproducible method, which combines macro and histopathological techniques for determining the degree of lipid deposition in genetically modified mice. Method The entire aortas from C57BL/6, ldlr-/- and apoE-/- mice were stained with Sudan IV using either in vivo perfusion or traditional in vitro enface staining techniques. Histological sections of aortic root and hearts were embedded in tissue freezing medium and cut with a cryostat, then stained with Oil Red O. The calculated aortic root area based on the aortic root circumference was used to reduce measurement errors. Results The in vitro en face staining can stain all fat, which include the adventitial tissue around aorta. However the in vivo perfusion staining can specifically stain the fatty deposition inside of aorta. Both entire aorta and aortic root section staining showed that there was a highly significant increase in fatty deposition in the aortas of the genetic modified mice. Although all mice genetic background was same, the apoE-/- mice had larger atherosclerotic lesions than ldlr-/- mice. Conclusions The new in vivo peffusion method is more accurate than the in vitro en face method. The combination of these macro and microscopic techniques overcomes the shortcomings of the earlier published methods which are generally limited to the measurement of fatty red staining areas only, neglecting non-specific adventitial fat staining around aorta and aortic root section tissue distortion.展开更多
文摘Double - faced iso - object embroidery is carried out byusing the uneven intercalated stitch crafts of the parallel- lines stitch as a main body, being accompanied by oth-er stitch crafts and miscellaneous stitches, done on thesame textile material. This paper deals with the flower -bird double - faced embroidery fan of the Qing Dynasty,from pattern design, stitching formation and techniqueof color arrangement, describes the possible way of mak-ing double - faced embroidery with iso - object effectboth in the front and in the back.
基金supported by the National Natural Science Foundation of China(11172094 and 11172095)the NCET-11-0122 and Hunan Provincial Natural Science Foundation for Creative Research Groups of China(12JJ7001)
文摘Interface imperfection can significantly affect the mechanical properties and failure mechanisms as well as the strength and toughness of nanocomposites. The elastic behavior of a screw dislocation in nanoscale coating with imperfect interface is studied in the three-phase composite cylinder model. The interface between inner nanoin- homogeneity and intermediate coating is assumed as perfectly bonded. The bonding between intermediate coating and outer matrix is considered to be imperfect with the assumption that interface imperfection is uniform, and a linear spring model is adopted to describe the weakness of imperfect interface. The explicit expression for image force acting on dislocation is obtained by means of a complex variable method. The analytic results indicate that inner interface effect and outer interface imperfection, simultaneously taken into account, would influence greatly image force, equilibrium position and stability of dislocation, and various critical parameters that would change dislocation stability. The weaker interface is a very strong trap for glide dislocation and, thus, a more effective barrier for slip transmission.
基金the National Natural Science Foundation of China (31300831)Zhejiang Provincial Social Science Foundation of China (14NDJC012Z)
文摘Studies of repetition priming have found two face-sensitive event-related potential(ERP) components:the N250 r showing positive deflection at frontal region and negative deflection at temporal region, and the N400 showing positive deflection at frontal and centro-parietal regions, both of which depend in part upon the presence or absence of a pre-existing face representation. However, the N250 r is rarely reported for a repetition interval between immediate repetition and 3 min; in addition, whether different types of representations function in the same way is also of interest. The goal of the present experiment is to compare the ERP patterns for faces versus letter strings as a function of the pre-existing memory representation with a repetition interval of 1.5 min on average. We found reliable frontally positive N250 r and N400 for famous faces and words; marginally significant effects for pseudo-words;and only the centro-parietal N400 for unfamiliar faces.Collectively, the N250 r persists in the present intermediate intervals, and both the frontal N250 r and the frontal N400 are domain-general, sensitive to the pre-existing memory representation.
基金supported by the Hong Kong WangKuan Cheng Foundation GrantBritish Heart Foundation
文摘Objectives To develop a simple, accurate and reproducible method, which combines macro and histopathological techniques for determining the degree of lipid deposition in genetically modified mice. Method The entire aortas from C57BL/6, ldlr-/- and apoE-/- mice were stained with Sudan IV using either in vivo perfusion or traditional in vitro enface staining techniques. Histological sections of aortic root and hearts were embedded in tissue freezing medium and cut with a cryostat, then stained with Oil Red O. The calculated aortic root area based on the aortic root circumference was used to reduce measurement errors. Results The in vitro en face staining can stain all fat, which include the adventitial tissue around aorta. However the in vivo perfusion staining can specifically stain the fatty deposition inside of aorta. Both entire aorta and aortic root section staining showed that there was a highly significant increase in fatty deposition in the aortas of the genetic modified mice. Although all mice genetic background was same, the apoE-/- mice had larger atherosclerotic lesions than ldlr-/- mice. Conclusions The new in vivo peffusion method is more accurate than the in vitro en face method. The combination of these macro and microscopic techniques overcomes the shortcomings of the earlier published methods which are generally limited to the measurement of fatty red staining areas only, neglecting non-specific adventitial fat staining around aorta and aortic root section tissue distortion.
