Exploring the Korean adolescent empathy using the Interpersonal Reactivity Index (IRI)

Asia Pacific Education Review - The educational approach of empathy has been prominently mentioned as a possible solution to the dehumanization occurring as a byproduct of the rapid development of...     

Endophytes from medicinal plants and their potential for producing indole acetic acid,improving seed germination and mitigating oxidative stress

Medicinal plants have been used by marginal communities to treat various ailments. However, the potential of endophytes within these bio-prospective medicinal plants remains unknown. The present study elucidates the endophytic diversity of medicinal plants (Caralluma acutangula, Rhazya stricta, and Moringa peregrina) and the endophyte role in seed growth and oxidative stress. Various organs of medicinal plants yielded ten endophytes, which were identified as Phoma sp. (6 isolates), Alternaria sp. (2), Bipolaris sp. (1), and Cladosporium sp. (1) based on 18S rDNA sequencing and phylogenetic analysis. The culture filtrates (CFs; 25%, 50%, and 100% concentrations) from these endophytes were tested against the growth of normal and dwarf mutant rice lines. Endophytic CF exhibited dose-dependent growth stimulation and suppression effects. CF (100%) of Phoma sp. significantly increased rice seed germination and growth compared to controls and other endophytes. This growth-promoting effect was due to the presence of indole acetic acid in endophytic CF. The gas chromatography/mass spectrometry (GC/MS) analysis showed the highest indole acetic acid content ((54.31±0.21) μmol/L) in Bipolaris sp. In addition, the isolate of Bipolaris sp. exhibited significantly higher radical scavenging and anti-lipid peroxidation activity than the other isolates. Bipolaris sp. and Phoma sp. also exhibited significantly higher flavonoid and phenolic contents. The medicinal plants exhibited the presence of bio-prospective endophytic strains, which could be used for the improvement of crop growth and the mitigation of oxidative stresses.     

Study on the effect of doxorubicin on expressions of genes encoding myocardial sarcoplasmic reticulum Ca<Superscript>2+</Superscript> transport proteins and the effect of taurine on myocardial protection in rabbits

To investigate the effect of doxorubicin(DOX) on gene expression of the myocardial sarcoplasmic reticulum (SR) Ca²⁺ transport proteins and the mechanism of taurine(Tau) protecting cardiac muscle cells, 9 rabbits were injected with DOX, 8 rabbits with DOX and Tau, and 9 rabbits with normal saline. Cardiac function, concentration of calcium in cardiomycocytes (Myo [Ca²⁺] _i ), activity of SR Ca²⁺-ATPase (SERCA2a), level of SERCA2a mRNA and Ca²⁺ released channels (RYR2) mRNA were detected. The left ventricle tissues were observed by electron microscopy. The results showed that cardiac index, left ventricular systolic pressure, activity of SR Ca²⁺-ATPase and level of SERCA2a mRNA decreased, while Myo[Ca²⁺] _i increased in DOX-treated rabbits. DOX could not affect the level of RYR2 mRNA. Tau intervention could alleviate the increase of left ventricular diastolic pressure, Myo[Ca²⁺] _i and the decrease of SERCA2a mRNA induced by doxorubicin. The results suggested that downregulation of SERCA2a gene expression was an important mechanism of DOX-induced cardiomyopathy and that Tau could partially improve the heart function by reducing calcium overload and alleviating downregulation of SERCA2a mRNA.     

试论世界观与创作方法的关系

创作方法是受一定世界观指导的，创作方法与世界观的关系问题，是文艺理论研究的一个重要课题。本文就世界观与创作方法的关系谈一些粗浅的看法。     

数学阅读能力的培养

数学阅读与一般文字材料的阅读不同,它有其自身的特点和规律。在数学教学中要注意培养学生的阅读能力,从而使他们正确地分析和解决数学问题。     

Teaching international students from Confucian Heritage Culture countries: perspectives from three U.S. host campuses

Asia Pacific Education Review - U.S. host campuses face instructional challenges from increasing numbers of international students from Confucian Heritage Culture (CHC) countries. Yet, the presence...     

哈代 女人 悲剧

文章在分析托马斯·哈代的创作意图、妇女观、悲剧艺术的需要及三个方面的关系的基础上,论证哈代悲剧小说中女主人公遭受不幸的必然性.     

EFL课堂的动机与策略研究

外语学习动机 (motivation)与学习态度、学习策略、学习成绩有着千丝万缕的关系。根据语言学家Brown和Gardner等关于动机研究的成果 ,提出EFL课堂的动机类型 ,动机养成和策略对学习者课堂表现的互动与促进 ,探讨进一步提高课堂教学效果的途径     

振动系统的频率逆问题

本文提出了如下振动系统的频率逆问题：由系统的截断子系统的固有频率确定系统的物理常数。讨论了解存在和唯一的充分必要条件。给出了数值算法和例子     

董必武的林业观及其对当代的启示

董必武明确了林业在国民经济中的重要地位,肯定了林业与农业的密切关系,提出了发展林业的具体措施,这些观点和举措对当今社会的林业发展仍有重要指导意义,其关于林业发展的一系列重要思想也是我们宝贵的精神遗产。