TEM observation of the restrained Goss–Brass orientation transformation in a warm-rolled Fe–28Mn–6Si–5Cr shape memory alloy

A dominant Goss texture component instead of a Brass texture component has been observed in a warm-rolled Fe–28Mn–6Si–5Cr shape memory alloy [H. Li, F. Yin, T. Sawaguchi K. Ogawa, X. Zhao and K. Tsuzaki, Mater. Sci. Eng. A 494 (2008) p.217]. In order to clarify the orientation flow mechanism in these grains of Goss orientation, investigations on microtexture and microstructure were carried out by electron backscattering diffraction (EBSD) and transmission electron microscopy (TEM). It is concluded that the Goss–Brass orientation transformation is restrained in the Goss-orientated grains, which were widely observed in both the deformed matrix and shear bands.     

Predicting eating problems among Malaysian Chinese: Differential roles of positive and negative perfectionism

Positive and negative perfectionism (measured by the Positive and Negative Perfectionism Scale; PANPS) are found to have differential roles in predicting eating problems. This study translated and back-translated the PANPS into Chinese and then examined whether its factor structure was comparable to the original PANPS. The relationships between positive and negative perfectionism (using Chinese PANPS) and eating problems were also evaluated. Malaysian Chinese (N = 205) adults completed the Chinese PANPS, Eating Disorder Inventory (EDI) and Marlowe-Crowne Social Desirability Scale. Principal Component Analysis showed the two-factor solution of the Chinese PANPS accounted for 33.42% of the total variance, which was comparable to previous studies. Hierarchical multiple regressions revealed that negative perfectionism significantly predicted all eating disorder symptoms for females, but not drive for thinness and body dissatisfaction for males. Conversely, positive perfectionism significantly predicted lower total EDI scores, lower ineffectiveness and lower interpersonal distrust, but only predicted lower body dissatisfaction among females. In conclusion, negative perfectionism was consistently associated with eating problems whereas positive perfectionism might be a potentially adaptive factor, confirming the distinctive roles each played in the development of eating problems, even in a non-Western population.     

Central executive involvement in children's spatial memory

Previous research with adults found that spatial short-term and working memory tasks impose similar demands on executive resources. We administered spatial short-term and working memory tasks to 8- and 11-year-olds in three separate experiments. In Experiments 1 and 2 an executive suppression task (random number generation) was found to impair performances on a short-term memory task (Corsi blocks), a working memory task (letter rotation), and a spatial visualisation task (paper folding). In Experiment 3 an articulatory suppression task only impaired performance on the working memory task. These results suggest that short-term and working memory performances are dependent on executive resources. The degree to which the short-term memory task was dependent on executive resources was expected to be related to the amount of experience children have had with such tasks. Yet we found no significant age-related suppression effects. This was attributed to differences in employment of cognitive strategies by the older children.     

The effect of self-referencing on memory for different kinds of source information

ABSTRACT

Self-referential processing has been proven to be effective in improving source memory. However, it is unclear whether different types of source information would be consistently enhanced when an item is self-referentially processed. In two experiments, the authors examined the influence of the self (compared with other-referencing and semantic processing) as well as learning intention (incidental/intentional learning) on memory for two types of source information (spatial location and colour) that differ in the amount of cognitive resources they require to be encoded in memory. Results show that self-referencing has enhanced memory for spatial location of words whatever this information is learned intentionally or incidentally, whereas it cannot facilitate memory for the colour of words under the intentional learning condition, nor can it under the incidental condition. These findings suggest that self-referential processing is beneficial in memory improvement but not all-powerful, a source self-reference effect is subject to source information type.     

On the automaticity of contingent capture: disruption caused by the attentional blink

Converging evidence has shown that onset capture can be completely eliminated by the demands of a concurrent task and during the attentional blink. In the present study, we investigated contingent capture during the attentional blink. We found that contingent capture was attenuated, or even completely eliminated, during the “blink” time of the attentional blink. These results indicate that contingent capture requires limited attentional resources.     

ICU谵妄的预防：早期活动

ICU谵妄发生率高、识别率低,可显著延长ICU平均住院时间、增加病死率、加重转出ICU后认知功能障碍.但目前缺乏有效的谵妄预防措施.综合干预措施可降低谵妄的发生,其中早期活动是治疗的关键.ICU早期活动安全可行,可降低谵妄的发生及缩短谵妄的持续时间,改善患者预后.ICU中开展早期活动治疗是基于＆quot;ABCDE＆quot;集束化干预措施的前提下,中断镇静后尽早开始肢体功能锻炼和职业治疗,包括从先被动后主动的关节活动,到双腿下垂坐到床缘,进一步下床坐到轮椅上甚至步行活动,是早期活动的基本流程.     

行为抑制性、母亲养育方式和学步儿问题行为的关系

采用实验室观察及问卷法,考察学步儿行为抑制性、母亲养育方式和问题行为的关系。结果发现:(1)行为抑制性正向预测内隐问题行为;母亲拒绝正向预测外显问题行为;母亲保护担忧负向预测外显问题行为。(2)性别能调节母亲养育方式与问题行为之间的关系,母亲鼓励独立负向预测男孩内隐问题行为;母亲拒绝正向预测女孩内隐问题行为;保护担忧负向预测男孩外显问题行为;母亲惩罚正向预测男孩外显问题行为。     

婚检医疗纠纷的法律问题探讨

发生在婚前医学检查过程中的医疗纠纷增加了人们对婚前医学检查的负面评价和不信任.通过对近年来发生的婚检医疗纠纷进行研究发现,婚检医疗纠纷主要包括漏诊医疗纠纷、误诊医疗纠纷、侵犯隐私权和知情权医疗纠纷以及人身损害医疗纠纷四类.就婚检医疗纠纷所涉及的漏诊误诊责任的判断、损害后果范围的确定和医疗机构在知情权与隐私权冲突时的选择等相关法律问题进行了探讨,提出应当通过立法明确婚检疾病的范围和规范婚检医师的资质、婚检医疗机构严格保护受检者隐私和身体来防范婚检医疗纠纷的发生.     

人文沟通技能在医疗纠纷处理中的应用

沟通能力已经成为当前医务人员必备能力之一。"中国医师人文医学执业技能培训"对加强医师人文素质,提高医师的沟通技能有着明显效果,然而该体系中却缺乏处理医疗纠纷的沟通技能的模块。结合医疗纠纷处理经验和人文沟通技能,探索出医疗纠纷处理中的沟通技能三阶段模型,以弥补中国医师人文医学执业技能培训体系之不足。     

缰核在抑郁症中的作用:研究和治疗的新途径

缰核是哺乳动物神经系统中连接前脑和中脑的重要节点,这一古老的核团因其与抑郁症的密切联系,近来获得国内外研究者的关注.缰核接受来自边缘系统、基底神经节等的传入信号,向下投射到中脑5-羟色胺系统和多巴胺系统.在应激条件下缰核免疫活动增强,向下游的投射信号增强,以此调节单胺类递质释放,参与抑郁症的发病机制,并且参与抗抑郁治疗的起效途径.这些证据提示缰核在抑郁症中具有重要作用,将成为研究和治疗的新途径.未来研究应从缰核与上下游核团的神经联系、与丘脑-垂体-肾上腺轴的相互影响、以及与免疫激活的交互作用等方面进一步探索,为研究抑郁症病理机制和治疗方法提供线索.