Objective To study feasibility and value of repair of oral mandibular defects with rib composite flap pedicled with internal thoracic vessels in basic level hospitals. Methods The clinical materials in 13 cases uith m...Objective To study feasibility and value of repair of oral mandibular defects with rib composite flap pedicled with internal thoracic vessels in basic level hospitals. Methods The clinical materials in 13 cases uith mandibular defects which were repaired with rib compos-展开更多
Two types of alumina dispersion-strengthened copper（ADSC） alloys were fabricated by a novel in-situ reactive synthesis（IRS） and a traditional internal oxidation（IO） process. The features of alumina dispersoids i...Two types of alumina dispersion-strengthened copper（ADSC） alloys were fabricated by a novel in-situ reactive synthesis（IRS） and a traditional internal oxidation（IO） process. The features of alumina dispersoids in these ADSC alloys were investigated by X-ray diffraction, scanning electron microscopy, and high-resolution transmission electron microscopy. It is found that nano-sized γ-Al2O3 particles of approximately 10 nm in diameter are homogeneously distributed in the IRS-ADSC composites. Meanwhile, larger-sized, mixed crystal structure alumina with rod-shaped morphology is embedded in the IO-ADSC alloy. The IRS-ADSC composites can obtain better mechanical and physical properties than the IO-ADSC composites; the tensile strength of the IRS-ADSC alloy can reach 570 MPa at room temperature, its electrical conductivity is 85% IACS, and the Rockwell hardness can reach 86 HRB.展开更多
Background: There is a lack of reliable epidemiological data on prevalence and comorbidity rates of mental disorders in the migrant population in Germany. Despite existing national and international data on the extent...Background: There is a lack of reliable epidemiological data on prevalence and comorbidity rates of mental disorders in the migrant population in Germany. Despite existing national and international data on the extent of psychosocial burdens in migrant populations the prevalence among the study population remains unclear. The aim of this study was to collect prevalence data for the largest migrant population in Germany-individuals with Turkish migration backgrounds—using a culturally and linguistically sensitive approach. Methods: The study employs a cross-sectional design. The multi-centre study (Hamburg, Berlin) is based on a sample of individuals with Turkish migration backgrounds living in the two cities stratified by age, gender, and education. The study programme consists of three phases: 1) a qualitative focus group to collect information on how to increase the participation rate of the target population as a minority group in Germany;2) a translation phase to create culture and linguistic sensitive versions of the assessment tools (e.g., the Composite International Diagnostic Interview (CIDI) for Turkish speaking individuals;and 3) a baseline community study to assess the lifetime, 12-month and four-week prevalence and comorbidity rates of mental disorder, health care utilization and help-seeking behaviour in individuals of Turkish migration backgrounds living in Germany. Discussion: The study provides important data on the lifetime prevalence of mental disorders and health care utilization of individuals with Turkish migration backgrounds. Furthermore, the study is an important step towards gaining a better understanding of potential barriers to participation, creating resources for difficult-to- reach minorities, and understanding the need for assessing mental disorders in migrant populations. These results can offer a starting point for the initiation of the necessary structural changes for mental health care services and policies for groups with migration backgrounds.展开更多
In the case of composite girders, an effective cooperation of both parts of the section is influenced by deformability of connectors. Limited flexural stiffness of welded studs, used commonly in bridge structures, doe...In the case of composite girders, an effective cooperation of both parts of the section is influenced by deformability of connectors. Limited flexural stiffness of welded studs, used commonly in bridge structures, does not provide full interaction of a steel beam and a concrete slab. This changes strain distribution in cross-sections of a composite girder and results in redistribution of internal forces in steel and concrete element. In the paper partial interaction index defined on the basis of a neutral axis position, which can be used for verification of steel-concrete interaction in real bridge structures rather than in specimens is proposed. The range of the index value changes, obtained during load testing of a typical steel-concrete composite beam bridge, is presented. The investigation was carried out on a motorway viaduct, consisting of two parallel structures. During the testing values of strains in girders under static and quasi-static loads were measured. The readings from the gauges were used to determine the index, characterizing composite action of the girders. Results of bridge testing under movable load, changing position along the bridge span is presented and obtained in-situ influence functions of strains and index values are commented in the paper.展开更多
Internal thermal insulation composite system(ITICS)can be an important measure for the energy-saving retrofitting of buildings.However,ITICS may cause harmful effects on the hygrothermal performance of building envelo...Internal thermal insulation composite system(ITICS)can be an important measure for the energy-saving retrofitting of buildings.However,ITICS may cause harmful effects on the hygrothermal performance of building envelopes.This work investigated the influence of the materials’hygric properties on the hygrothermal perfor-mance of a typical ITICS in different climate conditions in China.Two base wall materials,the traditional concrete and a new type aerated concrete,were tested and compared for their hygric properties firstly.The influence of the hygroscopicity of exterior plasters,the permeability of insulation materials and the climate conditions were then analyzed with WUFI simulations.The hygrothermal performance was evaluated with consideration of the total water content(TWC)of the walls and the moisture flux strength,the relative humidity(RH)and the mould growth risk at the interface between the base wall and the insulation layer(B-I interface).The numerical analysis implies that the TWC of internal insulated walls depends mainly on the hygroscopicity of exterior plaster and the wind-driven rain intensity.The upper limits for the water absorption coefficient of exterior plasters used in Bei-jing,Shanghai and Fuzhou are 1e-9,1e-10,1e-10 m^(2)/s respectively.When such limits are guaranteed,a vapour tight system created by using insulation materials with a large vapour resistance factor or adding a vapour barrier can improve the hygrothermal performance of ITICS,especially for concrete walls in cold climate.展开更多
Background： The Composite International Diagnostic Interview-3.0 （CIDI-3.0） is a fully structured lay-administered diagnostic interview for the assessment of mental disorders according to ICD-10 and Diagnostic and ...Background： The Composite International Diagnostic Interview-3.0 （CIDI-3.0） is a fully structured lay-administered diagnostic interview for the assessment of mental disorders according to ICD-10 and Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition （DSM-IV） criteria. The aim of the study was to investigate the concurrent validity of the Chinese CIDI in diagnosing mental disorders in psychiatric settings. Methods： We recruited 208 participants, of whom 148 were patients from two psychiatric hospitals and 60 healthy people from communities. These participants were administered with CIDI by six trained lay interviewers and the Structured Clinical Interview for DSM-IV Axis I Disorders （SCID-I, gold standard） by two psychiatrists. Agreement between CIDI and SCID-I was assessed with sensitivity, specificity, positive predictive value and negative predictive value. Individual-level CIDI-SCID diagnostic concordance was evaluated using the area under the receiver operator characteristic curve and Cohen＇s K. Results： Substantial to excellent CIDI to SCID concordance was found for any substance use disorder （area under the receiver operator characteristic curve [AUC] = 0.926）, any anxiety disorder （AUC = 0.807） and any mood disorder （AUC = 0.806）. The concordance between the CIDI and the SCID for psychotic and eating disorders is moderate. However, for individual mental disorders, the CIDI-SCID concordance for bipolar disorders （AUC = 0.55） and anorexia nervosa （AUC = 0.50） was insufficient. Conclusions： Overall, the Chinese version of ClDI-3.0 has acceptable validity in diagnosing the substance use disorder, anxiety disorder and mood disorder among Chinese adult population. However, we should be cautious when using it for bipolar disorders and anorexia nervosa.展开更多
文摘Objective To study feasibility and value of repair of oral mandibular defects with rib composite flap pedicled with internal thoracic vessels in basic level hospitals. Methods The clinical materials in 13 cases uith mandibular defects which were repaired with rib compos-
基金financially supported by the National Natural Science Foundation of China(NO.51464013)the Dr.Initialization Fund of Jiangxi University of Science and Technology(No.jxxjbs14013)
文摘Two types of alumina dispersion-strengthened copper（ADSC） alloys were fabricated by a novel in-situ reactive synthesis（IRS） and a traditional internal oxidation（IO） process. The features of alumina dispersoids in these ADSC alloys were investigated by X-ray diffraction, scanning electron microscopy, and high-resolution transmission electron microscopy. It is found that nano-sized γ-Al2O3 particles of approximately 10 nm in diameter are homogeneously distributed in the IRS-ADSC composites. Meanwhile, larger-sized, mixed crystal structure alumina with rod-shaped morphology is embedded in the IO-ADSC alloy. The IRS-ADSC composites can obtain better mechanical and physical properties than the IO-ADSC composites; the tensile strength of the IRS-ADSC alloy can reach 570 MPa at room temperature, its electrical conductivity is 85% IACS, and the Rockwell hardness can reach 86 HRB.
文摘Background: There is a lack of reliable epidemiological data on prevalence and comorbidity rates of mental disorders in the migrant population in Germany. Despite existing national and international data on the extent of psychosocial burdens in migrant populations the prevalence among the study population remains unclear. The aim of this study was to collect prevalence data for the largest migrant population in Germany-individuals with Turkish migration backgrounds—using a culturally and linguistically sensitive approach. Methods: The study employs a cross-sectional design. The multi-centre study (Hamburg, Berlin) is based on a sample of individuals with Turkish migration backgrounds living in the two cities stratified by age, gender, and education. The study programme consists of three phases: 1) a qualitative focus group to collect information on how to increase the participation rate of the target population as a minority group in Germany;2) a translation phase to create culture and linguistic sensitive versions of the assessment tools (e.g., the Composite International Diagnostic Interview (CIDI) for Turkish speaking individuals;and 3) a baseline community study to assess the lifetime, 12-month and four-week prevalence and comorbidity rates of mental disorder, health care utilization and help-seeking behaviour in individuals of Turkish migration backgrounds living in Germany. Discussion: The study provides important data on the lifetime prevalence of mental disorders and health care utilization of individuals with Turkish migration backgrounds. Furthermore, the study is an important step towards gaining a better understanding of potential barriers to participation, creating resources for difficult-to- reach minorities, and understanding the need for assessing mental disorders in migrant populations. These results can offer a starting point for the initiation of the necessary structural changes for mental health care services and policies for groups with migration backgrounds.
文摘In the case of composite girders, an effective cooperation of both parts of the section is influenced by deformability of connectors. Limited flexural stiffness of welded studs, used commonly in bridge structures, does not provide full interaction of a steel beam and a concrete slab. This changes strain distribution in cross-sections of a composite girder and results in redistribution of internal forces in steel and concrete element. In the paper partial interaction index defined on the basis of a neutral axis position, which can be used for verification of steel-concrete interaction in real bridge structures rather than in specimens is proposed. The range of the index value changes, obtained during load testing of a typical steel-concrete composite beam bridge, is presented. The investigation was carried out on a motorway viaduct, consisting of two parallel structures. During the testing values of strains in girders under static and quasi-static loads were measured. The readings from the gauges were used to determine the index, characterizing composite action of the girders. Results of bridge testing under movable load, changing position along the bridge span is presented and obtained in-situ influence functions of strains and index values are commented in the paper.
基金This research was funded by National Key R&D Program of China(2017YFC0702800),which is gratefully acknowledged.
文摘Internal thermal insulation composite system(ITICS)can be an important measure for the energy-saving retrofitting of buildings.However,ITICS may cause harmful effects on the hygrothermal performance of building envelopes.This work investigated the influence of the materials’hygric properties on the hygrothermal perfor-mance of a typical ITICS in different climate conditions in China.Two base wall materials,the traditional concrete and a new type aerated concrete,were tested and compared for their hygric properties firstly.The influence of the hygroscopicity of exterior plasters,the permeability of insulation materials and the climate conditions were then analyzed with WUFI simulations.The hygrothermal performance was evaluated with consideration of the total water content(TWC)of the walls and the moisture flux strength,the relative humidity(RH)and the mould growth risk at the interface between the base wall and the insulation layer(B-I interface).The numerical analysis implies that the TWC of internal insulated walls depends mainly on the hygroscopicity of exterior plaster and the wind-driven rain intensity.The upper limits for the water absorption coefficient of exterior plasters used in Bei-jing,Shanghai and Fuzhou are 1e-9,1e-10,1e-10 m^(2)/s respectively.When such limits are guaranteed,a vapour tight system created by using insulation materials with a large vapour resistance factor or adding a vapour barrier can improve the hygrothermal performance of ITICS,especially for concrete walls in cold climate.
文摘Background： The Composite International Diagnostic Interview-3.0 （CIDI-3.0） is a fully structured lay-administered diagnostic interview for the assessment of mental disorders according to ICD-10 and Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition （DSM-IV） criteria. The aim of the study was to investigate the concurrent validity of the Chinese CIDI in diagnosing mental disorders in psychiatric settings. Methods： We recruited 208 participants, of whom 148 were patients from two psychiatric hospitals and 60 healthy people from communities. These participants were administered with CIDI by six trained lay interviewers and the Structured Clinical Interview for DSM-IV Axis I Disorders （SCID-I, gold standard） by two psychiatrists. Agreement between CIDI and SCID-I was assessed with sensitivity, specificity, positive predictive value and negative predictive value. Individual-level CIDI-SCID diagnostic concordance was evaluated using the area under the receiver operator characteristic curve and Cohen＇s K. Results： Substantial to excellent CIDI to SCID concordance was found for any substance use disorder （area under the receiver operator characteristic curve [AUC] = 0.926）, any anxiety disorder （AUC = 0.807） and any mood disorder （AUC = 0.806）. The concordance between the CIDI and the SCID for psychotic and eating disorders is moderate. However, for individual mental disorders, the CIDI-SCID concordance for bipolar disorders （AUC = 0.55） and anorexia nervosa （AUC = 0.50） was insufficient. Conclusions： Overall, the Chinese version of ClDI-3.0 has acceptable validity in diagnosing the substance use disorder, anxiety disorder and mood disorder among Chinese adult population. However, we should be cautious when using it for bipolar disorders and anorexia nervosa.
