http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Buraq Talib Shalash AL‑Mosawi,David Wexler,Andrzej Calka 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.9
Al-matrix composites reinforced with variant quantity of milled carbon fibers (MCFs) were manufactured via uniball magnetomilling and uniaxial hot pressing (UHP). Cylindrical compacts of these composites were produced at approximately600 °C for 15 min and 70 MPa uniaxial pressure in an argon atmosphere. The microstructure of powders and consolidatedcomposite samples were studied by X-ray diffractometry and field emission scanning electron microscope with energy dispersivespectroscopy. The physical and mechanical properties of the bulk samples were estimated by Archimedes density,Vickers microhardness, modulus of elasticity, maximum compressive strength, yield strength, nanoindentation, and specificwear rate. Results show that Al + 20 vol% of MCFs has a higher compressive strength of (710 ± 32) MPa and modulus ofelasticity of (15 ± 2) GPa compared to other composites and unreinforced Al sample. There are several factors that couldbe participate in improving the composite properties. These reasons included enhanced interface between Al matrix andMFCs, free of porosity, refined microstructure, and improved wetting between MFCs and Al matrix. Also, the specific wearrate of the composite was decreased when the MCFs volume fraction increases from 5 to 20%. This might propose thatMFCs reduced the wear of the composites by acting as a self-lubrication material and might be suggested when using thesetypes of composites in components sliding against hard surface. The notable composite properties were found at processingparameters of 50 h milling time and UHP at 600 °C for 15 min under 70 MPa applied pressure.
Measuring theory of mind in schizophrenia research: Cross-cultural validation
Lee, Hyeon-Seung,Corbera, Silvia,Poltorak, Ania,Park, Kiho,Assaf, Michal,Bell, Morris D.,Wexler, Bruce E.,Cho, Young-Il,Jung, Sunho,Brocke, Sophy,Choi, Kee-Hong Elsevier 2018 Schizophrenia Research Vol.201 No.-
<P><B>Abstract</B></P> <P>Theory of mind (ToM) is the ability to understand mental states of others and it is crucial for building sensitivity to other persons or events. Measuring ToM is important for understanding and rehabilitating social cognitive impairments in persons with schizophrenia. The Social Attribution Task-Multiple Choice (SAT-MC) has been successfully employed to measure ToM between individuals with schizophrenia (SZ) and healthy controls (HC) in North America. Given that the SAT-MC uses geometric shapes, is nonverbal and less culturally loaded than other social cognition measures, it may serve for measuring ToM in schizophrenia across cultures.</P> <P>A total of 120 participants (30 per group; Korean SZ; Korean HC; North American SZ; North American HC) were selected from existing databases to examine the reliability and validity of the SAT-MC. Internal consistency, factor structure, measurement invariance, discriminant validity, and convergent/divergent validity were examined.</P> <P>The SAT-MC had good internal consistency regardless of the clinical and cultural group as evidence by Cronbach's <I>α</I> ≥ 0.78 in all groups. Confirmatory factor analysis confirmed the one-factor model with a good model fit (<I>χ</I> <SUP>2</SUP> = 188.122, TLI = 0.958, CFI = 0.963, RMSEA = 0.045). The SAT-MC was sensitive to detect individual differences in ToM of SZ and HC, regardless of culture (<I>p</I> < 0.001), and significantly correlated with other social cognition tasks (Hinting and Reading the Mind in the Eyes Test) among Korean and North American patients.</P> <P>The SAT-MC is a reliable measure for evaluating ToM in both Koreans and North Americans with or without schizophrenia, supporting its potential utility in diverse language and cultures for schizophrenia research.</P>