In recent years,speculation of an increase in Internet Gaming Disorder(IGD)has surfaced with the growing popularity of internet gaming among Chinese children and adolescents.The detrimental impact of IGD on mental hea...In recent years,speculation of an increase in Internet Gaming Disorder(IGD)has surfaced with the growing popularity of internet gaming among Chinese children and adolescents.The detrimental impact of IGD on mental health cannot be denied,even though only a small portion of the screen-dependent population exhibits psychopathological and behavioral symptoms.The present study aimed to explore a latent profile analysis(LPA)of Internet Gaming Disorder on the mental health of Chinese school students.The data were collected from a sample of 1005 Chinese school students(49.8%male;age M=13.32,SD=1.34 years)using a paper-pencil survey through convenience sampling.LPA explored three latent profiles of internet gamers:regular gamers(62.4%),moderate gamers(28.1%),and probable disordered gamers(9.4%).Results showed that the probable disordered gamers had significantly higher levels of depression,anxiety,emotional and conduct problems,hyperactivity,and peer problem symptoms as well as lower life satisfaction,and pro-social symptoms compared to regular and moderate gamers(p<0.05).This study would be helpful to mental health professionals in designing interventions for gamers who present IGD symptoms.Future longitudinal studies should also be undertaken to assess whether mental health worsens for probable disordered gamers.展开更多
The mechanical properties of 3104 aluminum alloy processed by different combinations of cryogenic and homogenization treatments were studied. The 3104 aluminum alloy processed by the cryogenic treatment followed by ho...The mechanical properties of 3104 aluminum alloy processed by different combinations of cryogenic and homogenization treatments were studied. The 3104 aluminum alloy processed by the cryogenic treatment followed by homogenization exhibited an enhancement in the tensile strength, yield strength, and elongation by 29%, 41%, and 11%, respectively, as compared with a sample processed by the conventional homogenization treatment. The stress-strain curve of the sample processed by the homogenization treatment exhibited the Portevin-Le Chatelier effect, whereas the sample processed by the cryogenic treatment did not. Further, the cryogenic treatment could accelerate the precipitation of secondary phase particles for the sample processed by a deep cryogenic treatment, followed by a homogenization treatment, which enhanced the dislocation pinning effect of the solvent atoms and thus improved the critical strain.展开更多
目的 探讨联合应用高位Le Fort Ⅰ型截骨同期牙槽嵴裂植骨矫治唇腭裂术后面中部畸形的可行性。方法2002年1月～2005年1月，共收治10例唇腭裂术后面中部畸形患者，男4例，女6例。年龄16～32岁。单侧唇腭裂8例，双侧2例。影像学检查均有...目的 探讨联合应用高位Le Fort Ⅰ型截骨同期牙槽嵴裂植骨矫治唇腭裂术后面中部畸形的可行性。方法2002年1月～2005年1月，共收治10例唇腭裂术后面中部畸形患者，男4例，女6例。年龄16～32岁。单侧唇腭裂8例，双侧2例。影像学检查均有继发面中部畸形的主要表现。均采用高位Le Fort Ⅰ型截骨和牙槽嵴裂自体髂骨游离移植一期手术矫正。高位Le Fort Ⅰ型截骨的截骨线在上颌骨前壁比常规Le Fort Ⅰ型截骨线高，最高可达眶下孔下5mm左右，水平截开至颧牙槽嵴处再弧形转向下后方。结果术后伤口均I期愈合。复查头部X线片，所有患者上颌骨位置均得到明显改善。随访6～24个月，牙弓外形良好，X线片示无明显骨质吸收，植骨区密度与周围接近。10例均获得满意面容，其中9例获得良好的牙骀关系。结论高位Le Fort Ⅰ型截骨术不仅可前移上颌骨，还可前移部分眶下区及整个鼻旁区和鼻底，更明显地改善畸形。同期行牙槽嵴裂自体髂骨游离移植，可减少手术次数、降低费用、获得理想效果，是矫治唇腭裂术后面中部继发畸形的一种有效方法。展开更多
目的:采用多片段Le Fort I型截骨术矫治严重牙颌面畸形,并为克服术后骨段固位不良之缺点自制一种腭侧固定夹板。方法:以该手术方法联合双侧下颌升支矢状劈开术（BSSRO）矫治上颌宽度不足伴上下颌其它严重畸形的患者19例。采用单纯多片...目的:采用多片段Le Fort I型截骨术矫治严重牙颌面畸形,并为克服术后骨段固位不良之缺点自制一种腭侧固定夹板。方法:以该手术方法联合双侧下颌升支矢状劈开术（BSSRO）矫治上颌宽度不足伴上下颌其它严重畸形的患者19例。采用单纯多片段Le FortI型截骨6例,联合BSSRO13例。19例中上颌两片段Le FortI型截骨12例,3片段7例。结果:术后随访16例,平均22.6m,66间距离平均扩宽7.3mm,33间平均扩宽3.9mm。无严重并发症及明显复发,咬合关系满意。结论:应用良好的腭侧固定夹板,采用多片段 Le FortI截骨联合BSSRO可一次满意矫治严重双颌畸形。展开更多
基金supported by the Postdoctoral Research Fund of School of Psychology,Zhejiang Normal University(No.ZC304022990).
文摘In recent years,speculation of an increase in Internet Gaming Disorder(IGD)has surfaced with the growing popularity of internet gaming among Chinese children and adolescents.The detrimental impact of IGD on mental health cannot be denied,even though only a small portion of the screen-dependent population exhibits psychopathological and behavioral symptoms.The present study aimed to explore a latent profile analysis(LPA)of Internet Gaming Disorder on the mental health of Chinese school students.The data were collected from a sample of 1005 Chinese school students(49.8%male;age M=13.32,SD=1.34 years)using a paper-pencil survey through convenience sampling.LPA explored three latent profiles of internet gamers:regular gamers(62.4%),moderate gamers(28.1%),and probable disordered gamers(9.4%).Results showed that the probable disordered gamers had significantly higher levels of depression,anxiety,emotional and conduct problems,hyperactivity,and peer problem symptoms as well as lower life satisfaction,and pro-social symptoms compared to regular and moderate gamers(p<0.05).This study would be helpful to mental health professionals in designing interventions for gamers who present IGD symptoms.Future longitudinal studies should also be undertaken to assess whether mental health worsens for probable disordered gamers.
基金Project(2011BAC10B02)supported by the National Key Technology R&D Program of China
文摘The mechanical properties of 3104 aluminum alloy processed by different combinations of cryogenic and homogenization treatments were studied. The 3104 aluminum alloy processed by the cryogenic treatment followed by homogenization exhibited an enhancement in the tensile strength, yield strength, and elongation by 29%, 41%, and 11%, respectively, as compared with a sample processed by the conventional homogenization treatment. The stress-strain curve of the sample processed by the homogenization treatment exhibited the Portevin-Le Chatelier effect, whereas the sample processed by the cryogenic treatment did not. Further, the cryogenic treatment could accelerate the precipitation of secondary phase particles for the sample processed by a deep cryogenic treatment, followed by a homogenization treatment, which enhanced the dislocation pinning effect of the solvent atoms and thus improved the critical strain.
文摘目的 探讨联合应用高位Le Fort Ⅰ型截骨同期牙槽嵴裂植骨矫治唇腭裂术后面中部畸形的可行性。方法2002年1月～2005年1月，共收治10例唇腭裂术后面中部畸形患者，男4例，女6例。年龄16～32岁。单侧唇腭裂8例，双侧2例。影像学检查均有继发面中部畸形的主要表现。均采用高位Le Fort Ⅰ型截骨和牙槽嵴裂自体髂骨游离移植一期手术矫正。高位Le Fort Ⅰ型截骨的截骨线在上颌骨前壁比常规Le Fort Ⅰ型截骨线高，最高可达眶下孔下5mm左右，水平截开至颧牙槽嵴处再弧形转向下后方。结果术后伤口均I期愈合。复查头部X线片，所有患者上颌骨位置均得到明显改善。随访6～24个月，牙弓外形良好，X线片示无明显骨质吸收，植骨区密度与周围接近。10例均获得满意面容，其中9例获得良好的牙骀关系。结论高位Le Fort Ⅰ型截骨术不仅可前移上颌骨，还可前移部分眶下区及整个鼻旁区和鼻底，更明显地改善畸形。同期行牙槽嵴裂自体髂骨游离移植，可减少手术次数、降低费用、获得理想效果，是矫治唇腭裂术后面中部继发畸形的一种有效方法。
文摘目的:采用多片段Le Fort I型截骨术矫治严重牙颌面畸形,并为克服术后骨段固位不良之缺点自制一种腭侧固定夹板。方法:以该手术方法联合双侧下颌升支矢状劈开术（BSSRO）矫治上颌宽度不足伴上下颌其它严重畸形的患者19例。采用单纯多片段Le FortI型截骨6例,联合BSSRO13例。19例中上颌两片段Le FortI型截骨12例,3片段7例。结果:术后随访16例,平均22.6m,66间距离平均扩宽7.3mm,33间平均扩宽3.9mm。无严重并发症及明显复发,咬合关系满意。结论:应用良好的腭侧固定夹板,采用多片段 Le FortI截骨联合BSSRO可一次满意矫治严重双颌畸形。
