AIM： To determine the accuracy of 1.5-T magnetic resonance imaging （MRI） in the evaluation of gastric wall invasion and perigastric lymph node metastasis in gastric adenocarcinoma.METHODS： Twenty resected gastric ...AIM： To determine the accuracy of 1.5-T magnetic resonance imaging （MRI） in the evaluation of gastric wall invasion and perigastric lymph node metastasis in gastric adenocarcinoma.METHODS： Twenty resected gastric specimens containing 20 tumors were studied with a 1.5-T MR system using a commercial head surface coil. MR scanning was performed with a T1 weighted image （TR/TE = 500/20）, and a T2 weighted image （TR/TE = 2500/90）. MR findings were compared with pathologic findings.RESULTS： A T1-weighted image demonstrated three layers in the normal gastric wall. All of the gastric tumors were well demonstrated by lesions and location. In a MRI findings of gastric wall invasion, there was 1 case of T1, 7 of T2, 11 of T3. Pathologic results of resected specimens included 3 cases of pT1, 4 of pT2, and 12 of pT3. The accuracy of T staging with MRI was 74% （14 of 19）. MRI findings of lymph node metastasis included 6 cases of NO, 13 cases of N1. The accuracy of the N staging with MRI was 47% （9 of 19）.CONCLUSION： MRI has a high diagnostic accuracy in the evaluation of the T staging of gastric cancerin vitro and thus potentially enables preoperative histopathologic staging.展开更多
The Huanghekou Sag is located at the southeast part of the Bohai Bay Basin, northern China. Large-scale shallow lake delta developed in the Neogene provided suitable geological conditions for the formation of a subtle...The Huanghekou Sag is located at the southeast part of the Bohai Bay Basin, northern China. Large-scale shallow lake delta developed in the Neogene provided suitable geological conditions for the formation of a subtle oil-gas reservoir in this area. The key for analyzing sandstone reservoir and sedimentary facies is by using seismic attributes(amplitude) to establish the relationship between lithology combination and seismic attributes. The lower unit of Late Miocene Minghuazhen Formation at the BZ34 block in the Huanghekou Sag was subdivided into 10 parasequence sets(PSS). Thicker sandstones mainly occurred in PSS1 and PSS10, whereas thin sandstones are mostly observed within other parasequence sets. This study presents statistics and analyses of lithology, i.e., statistics of root-meansquare(RMS) amplitude and lithology of well locations in different parasequence sets of the study area,as well as 1-D forward seismic models of 7 types of lithology combinations, the establishment of a spatial distribution of 2-D sandbody, forward seismic models etc. Our study indicates that high amplitude peaks correspond to thicker sandbodies, while low amplitude indicates non-development of sandbodies(generally less than 2 m), and medium amplitude agrees well with large sets of mudstones interbedded with medium and thinner sandstones. Different sand-mudstone combinations genetically reflect a combination of multiple micro-facies, therefore, amplitude features can predict sandbodies as well as facies characteristics.展开更多
The Lyric Collection on Objects of the Tea Smoke Pavilion is an anthology that Zhu Yizun compiled in his later years by carefully selecting object-depicting lyrics he composed throughout his life.Approximately 70 perc...The Lyric Collection on Objects of the Tea Smoke Pavilion is an anthology that Zhu Yizun compiled in his later years by carefully selecting object-depicting lyrics he composed throughout his life.Approximately 70 percent of the works were created before he participated in the imperial examination in 1679.This indicates that this anthology does not fully reflect the characteristics of the lyrics he penned in his later years.The collection title"Tea Smoke Pavilion,"as revealed in The Lyric Collection of the Serenity Dwelling,reflects the poet's distinctive approach to expressing emotions through depicting objects.A detailed examination of Zhu's works from the perspectives of textual structure,language,tone pattern and rhyming demonstrates that Zhu has consistently adhered to the same guiding principle when composing object-depicting lyrics.He has elevated the technique of“objectification,”pioneered by the poets of the Southern Song Dynasty to a new realm,crafting a unique beauty in object-depicting lyrics,which is different from the beauty of Song lyrics.His success is rooted in his emotional experiences depicted in The Serenity Dwelling Collection.His relentless exploration in artistic forms has provided a source of inspiration for scholars of later generations to explore how to convey personal sentiments.It also offers an opportunity to reflect on the merits and demerits regarding the development of object-depicting lyrics during the Qing Dynasty.展开更多
The art of writing reflected in the short story Early Autumn by Langston Hughes is discussed from three perspectives:the careful choice of the title "Early Autumn"; the unique psychological depiction of char...The art of writing reflected in the short story Early Autumn by Langston Hughes is discussed from three perspectives:the careful choice of the title "Early Autumn"; the unique psychological depiction of characters; and the special purpose for the description of settings and scenes in this story.展开更多
Facial imaging is a term used to describe methods that use facial images to assist or facili-tate human identification. This pertains to two craniofacial identification procedures that use skulls and faces—facial app...Facial imaging is a term used to describe methods that use facial images to assist or facili-tate human identification. This pertains to two craniofacial identification procedures that use skulls and faces—facial approximation and photographic superimposition—as well as face-only methods for age progression/regression, the construction of facial graphics from eye-witness memory (including composites and artistic sketches), facial depiction, face mapping and newly emerging methods of molecular photofitting. Given the breadth of these facial imaging techniques, it is not surprising that a broad array of subject-matter experts partici-pate in and/or contribute to the formulation and implementation of these methods (includ-ing forensic odontologists, forensic artists, police officers, electrical engineers, anatomists, geneticists, medical image specialists, psychologists, computer graphic programmers and software developers). As they are concerned with the physical characteristics of humans, each of these facial imaging areas also falls in the domain of physical anthropology, although not all of them have been traditionally regarded as such. This too offers useful opportunities to adapt established methods in one domain to others more traditionally held to be disciplines within physical anthropology (e.g. facial approximation, craniofacial super-imposition and face photo-comparison). It is important to note that most facial imaging methods are not currently used for identification but serve to assist authorities in narrowing or directing investigations such that other, more potent, methods of identification can be used (e.g. DNA). Few, if any, facial imaging approaches can be considered honed end-stage scientific methods, with major opportunities for physical anthropologists to make meaningful contributions. Some facial imaging methods have considerably stronger scientific underpin-nings than others (e.g. facial approximation versus face mapping), some currently lie entirely within the artistic sphere (facial dep展开更多
Visual saliency can always persuade the viewer＇s visual attention to fine-scale mesostructure of 3D complex shapes. Owing to the multi-channel salience measure and salience-domain shape modeling technique, a novel vi...Visual saliency can always persuade the viewer＇s visual attention to fine-scale mesostructure of 3D complex shapes. Owing to the multi-channel salience measure and salience-domain shape modeling technique, a novel visual saliency based shape depiction scheme is presented to exaggerate salient geometric details of the underlying relief surface. Our multi-channel salience measure is calculated by combining three feature maps, i.e., the 0-order feature map of local height distribution, the l-order feature map of normal difference, and the 2-order feature map of mean curvature variation. The original relief surface is firstly manipulated by a salience-domain enhancement function, and the detail exaggeration surface can then be obtained by adjusting the surface normals of the original surface as the corresponding final normals of the manipulated surface. The advantage of our detail exaggeration technique is that it can adaptively alter the shading of the original shape to reveal visually salient features whilst keeping the desired appearance unimpaired. The experimental results demonstrate that our non-photorealistic shading scheme can enhance the surface mesostructure effectively and thus improving the shape depiction of the relief surfaces.展开更多
In Bakhtin, dialogism and intercorporeity are closely interconnected by a relation of reciprocal implication: there cannot be dialogue among disembodied minds, nor can dialogism be understood separately from a biosemi...In Bakhtin, dialogism and intercorporeity are closely interconnected by a relation of reciprocal implication: there cannot be dialogue among disembodied minds, nor can dialogism be understood separately from a biosemiotic conception of the sign. Bakhtin's monograph on Rabelais forms an organic part of his writings, including those produced by his collaborators and friends Voloshinov and Medvedev. According to Bakhtin, dialogue concerns literature and life. He evidences the ideological character of the contemporary conception of the individual body described as separate from other bodies and self-sufficient. And, in fact, through his readings of Rabelais' s works he evidences the validity of the carnival vision of the grotesque body.展开更多
文摘AIM： To determine the accuracy of 1.5-T magnetic resonance imaging （MRI） in the evaluation of gastric wall invasion and perigastric lymph node metastasis in gastric adenocarcinoma.METHODS： Twenty resected gastric specimens containing 20 tumors were studied with a 1.5-T MR system using a commercial head surface coil. MR scanning was performed with a T1 weighted image （TR/TE = 500/20）, and a T2 weighted image （TR/TE = 2500/90）. MR findings were compared with pathologic findings.RESULTS： A T1-weighted image demonstrated three layers in the normal gastric wall. All of the gastric tumors were well demonstrated by lesions and location. In a MRI findings of gastric wall invasion, there was 1 case of T1, 7 of T2, 11 of T3. Pathologic results of resected specimens included 3 cases of pT1, 4 of pT2, and 12 of pT3. The accuracy of T staging with MRI was 74% （14 of 19）. MRI findings of lymph node metastasis included 6 cases of NO, 13 cases of N1. The accuracy of the N staging with MRI was 47% （9 of 19）.CONCLUSION： MRI has a high diagnostic accuracy in the evaluation of the T staging of gastric cancerin vitro and thus potentially enables preoperative histopathologic staging.
基金funded by the National Science and Technology Major Project(Exploration Technologies for Offshore Hidden Oil/Gas)(Project No.:2016ZX05024003-003)
文摘The Huanghekou Sag is located at the southeast part of the Bohai Bay Basin, northern China. Large-scale shallow lake delta developed in the Neogene provided suitable geological conditions for the formation of a subtle oil-gas reservoir in this area. The key for analyzing sandstone reservoir and sedimentary facies is by using seismic attributes(amplitude) to establish the relationship between lithology combination and seismic attributes. The lower unit of Late Miocene Minghuazhen Formation at the BZ34 block in the Huanghekou Sag was subdivided into 10 parasequence sets(PSS). Thicker sandstones mainly occurred in PSS1 and PSS10, whereas thin sandstones are mostly observed within other parasequence sets. This study presents statistics and analyses of lithology, i.e., statistics of root-meansquare(RMS) amplitude and lithology of well locations in different parasequence sets of the study area,as well as 1-D forward seismic models of 7 types of lithology combinations, the establishment of a spatial distribution of 2-D sandbody, forward seismic models etc. Our study indicates that high amplitude peaks correspond to thicker sandbodies, while low amplitude indicates non-development of sandbodies(generally less than 2 m), and medium amplitude agrees well with large sets of mudstones interbedded with medium and thinner sandstones. Different sand-mudstone combinations genetically reflect a combination of multiple micro-facies, therefore, amplitude features can predict sandbodies as well as facies characteristics.
文摘The Lyric Collection on Objects of the Tea Smoke Pavilion is an anthology that Zhu Yizun compiled in his later years by carefully selecting object-depicting lyrics he composed throughout his life.Approximately 70 percent of the works were created before he participated in the imperial examination in 1679.This indicates that this anthology does not fully reflect the characteristics of the lyrics he penned in his later years.The collection title"Tea Smoke Pavilion,"as revealed in The Lyric Collection of the Serenity Dwelling,reflects the poet's distinctive approach to expressing emotions through depicting objects.A detailed examination of Zhu's works from the perspectives of textual structure,language,tone pattern and rhyming demonstrates that Zhu has consistently adhered to the same guiding principle when composing object-depicting lyrics.He has elevated the technique of“objectification,”pioneered by the poets of the Southern Song Dynasty to a new realm,crafting a unique beauty in object-depicting lyrics,which is different from the beauty of Song lyrics.His success is rooted in his emotional experiences depicted in The Serenity Dwelling Collection.His relentless exploration in artistic forms has provided a source of inspiration for scholars of later generations to explore how to convey personal sentiments.It also offers an opportunity to reflect on the merits and demerits regarding the development of object-depicting lyrics during the Qing Dynasty.
文摘The art of writing reflected in the short story Early Autumn by Langston Hughes is discussed from three perspectives:the careful choice of the title "Early Autumn"; the unique psychological depiction of characters; and the special purpose for the description of settings and scenes in this story.
文摘Facial imaging is a term used to describe methods that use facial images to assist or facili-tate human identification. This pertains to two craniofacial identification procedures that use skulls and faces—facial approximation and photographic superimposition—as well as face-only methods for age progression/regression, the construction of facial graphics from eye-witness memory (including composites and artistic sketches), facial depiction, face mapping and newly emerging methods of molecular photofitting. Given the breadth of these facial imaging techniques, it is not surprising that a broad array of subject-matter experts partici-pate in and/or contribute to the formulation and implementation of these methods (includ-ing forensic odontologists, forensic artists, police officers, electrical engineers, anatomists, geneticists, medical image specialists, psychologists, computer graphic programmers and software developers). As they are concerned with the physical characteristics of humans, each of these facial imaging areas also falls in the domain of physical anthropology, although not all of them have been traditionally regarded as such. This too offers useful opportunities to adapt established methods in one domain to others more traditionally held to be disciplines within physical anthropology (e.g. facial approximation, craniofacial super-imposition and face photo-comparison). It is important to note that most facial imaging methods are not currently used for identification but serve to assist authorities in narrowing or directing investigations such that other, more potent, methods of identification can be used (e.g. DNA). Few, if any, facial imaging approaches can be considered honed end-stage scientific methods, with major opportunities for physical anthropologists to make meaningful contributions. Some facial imaging methods have considerably stronger scientific underpin-nings than others (e.g. facial approximation versus face mapping), some currently lie entirely within the artistic sphere (facial dep
基金supported by the National Natural Science Foundation of China under Grant Nos. 61272309,61170138the Program for New Century Excellent Talents in University of China under Grant No. NCET-10-0728
文摘Visual saliency can always persuade the viewer＇s visual attention to fine-scale mesostructure of 3D complex shapes. Owing to the multi-channel salience measure and salience-domain shape modeling technique, a novel visual saliency based shape depiction scheme is presented to exaggerate salient geometric details of the underlying relief surface. Our multi-channel salience measure is calculated by combining three feature maps, i.e., the 0-order feature map of local height distribution, the l-order feature map of normal difference, and the 2-order feature map of mean curvature variation. The original relief surface is firstly manipulated by a salience-domain enhancement function, and the detail exaggeration surface can then be obtained by adjusting the surface normals of the original surface as the corresponding final normals of the manipulated surface. The advantage of our detail exaggeration technique is that it can adaptively alter the shading of the original shape to reveal visually salient features whilst keeping the desired appearance unimpaired. The experimental results demonstrate that our non-photorealistic shading scheme can enhance the surface mesostructure effectively and thus improving the shape depiction of the relief surfaces.
文摘In Bakhtin, dialogism and intercorporeity are closely interconnected by a relation of reciprocal implication: there cannot be dialogue among disembodied minds, nor can dialogism be understood separately from a biosemiotic conception of the sign. Bakhtin's monograph on Rabelais forms an organic part of his writings, including those produced by his collaborators and friends Voloshinov and Medvedev. According to Bakhtin, dialogue concerns literature and life. He evidences the ideological character of the contemporary conception of the individual body described as separate from other bodies and self-sufficient. And, in fact, through his readings of Rabelais' s works he evidences the validity of the carnival vision of the grotesque body.
