Attention characteristics of children with different clinical subtypes of attention deficit hyperactivity disorder

目的探讨注意缺陷多动障碍(AdHd)儿童不同亚型的注意力特征,为临床干预提供依据。方法对345例AdHd儿童进行分型,使用整合视听持续性操作测试(IVA-CPT)进行注意力评估,比较不同亚型的视觉和听觉注意力特征。以122例正常儿童作为对照。结果 3种亚型AdHd儿童综合注意力商数和综合控制力商数得分均明显低于正常儿童,差异有统计学意义(P<0.01);在控制力商数上,多动/冲动为主型(AdHd-HI)儿童听觉得分低于视觉,差异有统计学意义(P<0.05);在注意力商数、速度商数上,3亚型AdHd儿童听觉得分高于视觉,差异均有统计学意义(P<0.01);在谨慎商数上,视觉得分高于听觉得分,差异有统计学意义(P<0.01);不同亚型AdHd儿童之间听觉注意力相关商数和视觉注意力相关商数差别无统计学意义。结论 AdHd儿童注意功能低于正常儿童,且视觉注意功能受损重于听觉;不同亚型AdHd儿童在视觉和听觉注意力特征上的功能受损程度无差别。Objective To explore the attention characteristics of children with different clinical subtypes of attention deficit hyperactivity disorder(ADHD) and to provide a basis for clinical intervention.Methods A total of 345 children diagnosed with ADHD were selected and the subtypes were identified.Attention assessment was performed by the intermediate visual and auditory continuous performance test at diagnosis, and the visual and auditory attention characteristics were compared between children with different subtypes.A total of 122 normal children were recruited in the control group and their attention characteristics were compared with those of children with ADHD.Results The scores of full scale attention quotient(AQ) and full scale response control quotient(RCQ) of children with all three subtypes of ADHD were significantly lower than those of normal children(P<0.01).The score of auditory RCQ was significantly lower than that of visual RCQ in children with ADHD-hyperactive/impulsive subtype(P<0.05).The scores of auditory AQ and speed quotient(SQ) were significantly higher than those of visual AQ and SQ in three subtypes of ADHD children(P<0.01), while the score of visual precaution quotient(PQ) was significantly higher than that of auditory PQ(P<0.01).No significant differences in auditory or visual AQ were observed between the three subtypes of ADHD.Conclusions The attention function of children with ADHD is worse than that of normal children, and the impairment of visual attention function is severer than that of auditory attention function.The degree of functional impairment of visual or auditory attention shows no significant differences between three subtypes of ADHD

The Design of Multi-functional Micro Electrical Machining Power Supply Based on CPLD

为了解决微能脉冲电源发展中遇到的功能单一、集成度不高等问题,设计了多功能微细电加工脉冲电源。以单片机和CPld作为微控制器,利用模块化的方法对关键模块进行设计,并运用QuArTuS软件对高频脉冲发生单元进行仿真,得到微细电火花和微细电化学的脉冲波形,通过对脉冲的切换实现了微细电火花和微细电化学的加工。In order to solve the problem such as function single,integration degree low,a multi-functional micro electrical machining pulse power supply was designed.The microcontroller based on MCU and CPLD is designed by the moduleir method,and by Quartus software,the high frequency pulse generating unit is simulated.And the pulse waveform of micro EDM and ECM is obtained.The processing of micro EDM and ECM is realized by switching the pulse

中草药用于酱油防腐初步研究

采用滤纸片法研究了118种中草药对酱油腐败菌毕赤氏酵母的抑制情况,考察了中草药的添加对酱油各项理化指标的影响,并以苯甲酸钠为对照,探讨其在酱油防腐效果方面的差异。结果表明,乌梅、丁香及石榴皮对酱油的防腐效果优于苯甲酸钠,并有助于改善酱油风味。其中,乌梅的最低抑菌质量浓度(MIC)及最低杀菌质量浓度(MBC)均为最小,分别达31.0 g/L和62.5 g/L

Evaluation technique of the loss of coastal ecosystem services caused by sea reclamation project with three methods

在分析填海工程对海洋环境影响的基础上,结合《海洋生态资本评估技术导则》(gb/T 28058-2011)综合构建了填海工程对海洋生态系统服务功能损耗评估指标体系。分别采用价值评估法、能值分析法和物种丰度经验公式法对生态损耗进行价值评估,以福鼎市塔下新建填海工程为分析对象进行了实证评估,生态系统服务价值总损失量分别为672.0万元·年–1、809.2万元·年–1和133.3万元·年–1。通过与国内相关研究成果进行比较,分析三种评估方法的可行性和适用性,以期在实际环境影响评价工作中将工程外部成本纳入项目经济损益分析,为海岸带经济可持续发展提供技术支撑。Based on the effects of marine environment caused by sea reclamation and Technical Directives for Marine Ecological Capital Assessment(GB/T 28058-2011), the indexes of the losses of coastal ecosystem services caused by sea reclamation were built.The lost value of sea reclamation was calculated with three methods including economic evaluation, emergy analysis and biodiversity experiential formula which were applied in the new sea reclamation in Taxia Fuding Fujian Province separately, and the total ecosystem lost value was 672.0×104yuan·a–1, 809.2×104yuan·a–1, and 133.3×104yuan·a–1 correspondingly.Compared with other relevant researches, the methods are expected to apply in EIA economic evaluation in order to consider external cost and to apply in coastal economic sustainable development.海洋渔业安全环境保障服务系统关键技术研究及示范应用(201205006

Preliminary study on Wada test with bolus injection of propofol into intracarotid artery

目的对难以进行功能磁共振(fMRI)检查的难治性癫痫患者采用异丙酚进行Wada试验,探讨其测定语言优势半球及双侧半球的运动及记忆功能的安全性和有效性。方法首先常规记录脑电图(EEG)30 min,并持续进行监测;之后经股动脉插管至颈内动脉,行全脑血管数字减影(DSA)检查;然后在心电及血压监护下,向患侧颈内动脉以弹丸方式快速注射一定剂量的异丙酚,使对侧上肢肌力保持在3级以下,并进行标准化的语言及记忆功能测定;30 min后,经股动脉插管另一侧颈内动脉,以同样方式进行测定。结果共12例患者,2例为癫痫性脑病,10例为局灶性症状性癫痫。1例因DSA造影发现双侧大脑后交通动脉明显开放而中止Wada试验,其余11例均进行了Wada试验。在11例患者中,7例在注射异丙酚后出现不同程度的一过性不良反应,10例患者最终接受手术治疗,经随访术后均未出现明显的神经功能受损。结论经股动脉插管至颈内动脉,行脑血管DSA,之后采用弹丸注射方式给予异丙酚进行Wada试验,可以安全有效地对大脑半球的运动、语言及记忆功能进行测定

解矩形薄板弯曲问题的二元B样条有限元法

本文提出了一种解薄板弯曲问题的二元Ｂ样条有限元法．该方法相应的系数总矩阵十分简单，不需叠加而一次成型，其半带宽以块计仅为２，子块半带宽至多为２．由于二元二次样条在三角形单元上仅有６个系数，使得总体自由度数目大大小于其它各种有限元法，其计算量自然随之下降，而所得的解还是C1协调的

一种石墨烯柔性复合电极、其制备方法及柔性超级电容器

本发明提供了一种石墨烯柔性复合电极、其制备方法及柔性超级电容器。本发明提供的石墨烯柔性复合电极包括：聚二甲基硅氧烷基底、三维石墨烯集流体和电极活性材料；所述三维石墨烯集流体的一部分填充于所述聚二甲基硅氧烷基底中，另一部分负载所述电极活性材料。本发明提供的柔性复合电极能够使柔性超级电容器和柔性微型超级电容器的比容量分别可达0.5～1F-cm2和30～50mF-cm2，且分别在反复弯曲折叠5000和2000次后容量保持率高于80％

一种柔性超级电容器电极及其制备方法

本发明提供了一种柔性超级电容器电极，包括石墨烯纸以及复合于所述石墨烯纸的三维多孔石墨烯。本发明将石墨烯纸与三维多孔石墨烯进行紧密的复合制备柔性超级电容器电极，其中，前者主要承担电极集流体的作用，同时赋予电极良好的力学性能，后者具有孔结构且比表面积大，良好的离子扩散能力和电荷存储能力，赋予电极优异的电容特性，通过结合两种不同石墨烯结构在电极力学性能和能量存储上的优势，获得具有良好力学性能的高性能柔性电极