Experimental investigations of TB2 alloy by pack boriding with rare-earth oxides

ABSTRACT

An orthogonal test with four factors, namely temperature, time, type of rare-earth oxides (REOs) and REO content, was performed to obtain the optimised boriding parameters of TB2 alloy by pack boriding with REOs. It is found that temperature has the strongest effect on the boride layer thickness, while time has the strongest effect on the surface hardness and coefficient of friction. The optimum parameters for pack boriding of TB2 alloy with REO are a temperature of 1373?K, a time of 20?h, La₂O₃ as the REO with a content of 4?wt.%.     

A novel method for measurement of electronic work function of micro/nanostructure materials using a Kelvin probe system

Work function (WF) can be measured using the Kelvin probe (KP) technique to characterize surface behavior of micro/nanostructures grown on substrates such as metals or semiconductors. However, for such micro/nanostructures, substrates with different WF can strongly affect the measurements if they are exposed directly to face the Kevin probe tip. In this article, a model is proposed to investigate the WF of sparse ZnO nanorods grown on an Si substrate. It is demonstrated that theoretical results from the model are consistent with experimental observations performed using a KP system.     

Individual differences in false memory from misinformation: Cognitive factors

This research investigated the cognitive correlates of false memories that are induced by the misinformation paradigm. A large sample of Chinese college students (N=436) participated in a misinformation procedure and also took a battery of cognitive tests. Results revealed sizable and systematic individual differences in false memory arising from exposure to misinformation. False memories were significantly and negatively correlated with measures of intelligence (measured with Raven's Advanced Progressive Matrices and Wechsler Adult Intelligence Scale), perception (Motor-Free Visual Perception Test, Change Blindness, and Tone Discrimination), memory (Wechsler Memory Scales and 2-back Working Memory tasks), and face judgement (Face Recognition and Facial Expression Recognition). These findings suggest that people with relatively low intelligence and poor perceptual abilities might be more susceptible to the misinformation effect.     

国外儿童关系性攻击影响因素及测量方法新进展

关系性攻击是对他人人际关系的攻击。儿童关系性攻击受到很多因素的影响,其中主要包括父母的教养方式、同胞、同伴和媒体等。由于儿童关系性攻击具有隐蔽性的特点,所以儿童关系性攻击的测量方法主要包括社会测量评价、教师评定和自我报告等,每种方法都具有各自的优点和缺点,多种方法联合使用会更准确。     

人文关怀在消除IVF—ET患者心理压力中的作用

近年我国不少生殖医学中心在如何提高体外受精一胚胎移植（IVF—ET）治疗成功率问题上,都将注意力集中在临床用药的研究、控制性超促排卵方案的改进以及实验室条件的改善上,大多忽视IVF—ET患者心理方面的治疗。有研究表明：IVF—ET治疗的成功,不仅与患者自身的病理及生理状况有关,更与患者在治疗过程中产生的心理压力有关。因此,建议医护人员在给不孕症患者实施IVF-ET助孕治疗的全过程中,应给予患者更多人文关怀,这样不仅能够减少IVF—ET患者心理健康问题的发生,而且可以改善患者的身心状态和应对治疗能力,从而提高IVF—ET治疗成功率。     

示中环指指尖缺损的鱼际皮瓣修复

探讨应用鱼际皮瓣修复示中环指指尖缺损的方法和效果.自2010年8月～2013年3月,应用鱼际皮瓣修复示中环指指尖缺损28例,术后评价皮瓣外观及供区愈合情况.结果术后28例皮瓣全部存活,随访时间为2个月～8个月.患指指尖皮瓣质地柔软,外形饱满,颜色与周围一致,指端无压痛,供区直接缝合,未发现刀口疲痕挛缩影响拇指及虎口功能.鱼际皮瓣修复示中环指指尖缺损手术操作简单,修复后患指指尖外观满意、供区损伤小.患者顺从性好,易于为临床医生所接受.     

The Moderating Role of English Proficiency in the Association Between Immigrant Chinese Mothers' Authoritative Parenting and Children's Outcomes

The authors' objective was to investigate the association between Chinese immigrant mothers' authoritative parenting and their children's socioemotional and behavioral difficulties. Participants were 136 first-generation Chinese immigrant mothers with 3–5-year-old children residing in the United States. Authoritative parenting was associated with lower socioemotional and behavioral difficulties in children as reported by preschool teachers. Further moderation analyses revealed that immigrant mothers' English proficiency moderated the association between authoritative parenting and children's difficulties. Specifically, authoritative parenting was significantly associated with fewer total difficulties only for children with mothers who reported higher English proficiency.     

Mapping the central structure core in social representation of pain

Previous evidence had revealed gender differences in perception of pain and its socialization. The present research studies gender differences by mapping the central structure core in social representation of pain. Eighty males and eighty females participated in a free evocation task for collecting cognitive elements of “pain.” By defining the elements as nodes and their co‐occurrences as lines, structural characteristics of social representation are analyzed by network analysis. Females have a central structure core in their network structure of social representation of pain. In contrast, males have no such core. These results suggest gender differences in socialization processes around the concept of pain and extend practical methods for studies of the central nucleus theory of social representation.