Preparation of Lanthanum Oxide and Lanthanum Oxycarbonate Layers on Titanium by Electrodeposition with Organic Solution

Layers of lanthanum oxide and lanthanum oxycarbonate were prepared on titanium by electrodeposition with organic solution. Four voltages ranging from 200 to 1000 V were applied for the electrodeposition at three concentrations of lanthanum ions. The organic solution was isobutanol and titanium foils were used as anodes and cathodes. Currents were monitored during the electrodeposition. Deposition layers were calcined at 700 K for 30 min or at 900 K for 60 and 200 min. The morphology and composition of the deposition layers were examined by scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). Calcined deposition layers were assayed to be lanthanum oxycarbonate and lanthanum oxide. The average crystallite size was in the vicinity of 8 nm. Sizes of lanthanum oxycarbonate agglomerates in layers with 30 min electrodeposition and calcination at 700 K were ranging from 25 to 75 nm. Yields of lanthanum oxycarbonate at three concentrations of lanthanum ions were shown to be better at 400 V

Feasibility of Ivy (Hedra helix) for landscaping in Seoul, Korea

Due to the global warming, Seoul in Korea seems to be plausible to grow evergreen broad-leaved trees over the cold winter. This offers the planting options to create green environment. Thus, it became worth investigating what kinds of evergreen broad-leaved plants could stand in Seoul during the winter. Ivy (Hedera helix) has been chosen in the current study which is a well-known native and ornamental plant in Europe. It grows in warm condition in general. The current study tracked H. helix which is evergreen cover plant over winter in order to evaluate the possibility for utilizing this species as a climber or cover-plant in Seoul. We found that H. helix can survive over the winter and can be utilized to create evergreen environment in Seoul. It also implies that similar kinds of plants could be tested assuming the environment of Seoul is becoming more suitable for the plants originated from the warmer sites. H. helix is an option for elaborating outdoor environments in the city that lacks of green color

Violet-light spontaneous and stimulated emission from ultrathin In-rich InGaN/GaN multiple quantum wells grown by metalorganic chemical vapor deposition

We investigated the spontaneous and stimulated emission properties of violet-light-emitting ultrathin In-rich InGaN/GaN multiple quantum wells (MQWs) with indium content of 60%-70%. The Stokes shift was smaller than that of In-poor InGaN MQWs, and the emission peak position at 3.196 eV was kept constant with increasing pumping power, indicating negligible quantum confined Stark effect in ultrathin In-rich InGaN MQWs despite of high indium content. Optically pumped stimulated emission performed at room temperature was observed at 3.21 eV, the high-energy side of spontaneous emission, when the pumping power density exceeds ???31 kW/ cm2.open6

Effects of Concentration Training with Brainwave Biofeedback on Tennis Performance

2001This article presents evidence of effectiveness of 12-week concentration training program with brainwave biofeedback on concentration ability and tennis performance. Eight male tennis players were divided into two groups (Experimental and Control). Experimental group (n = 4) completed a series of training program using the Q-Jump computer system. Experimental task was one-set tennis singles with no-ad scoring system. The participants responded to the Korean version of the Test of Attentional and Interpersonal Style (TAIS) before and after the experiment. The results revealed that the concentration training program (a) was effective in improving concentration intensity and duration, (b) led to significant impact on attentional style, and (c) helped to improve tennis performance. Correlational analyses revealed negative relationships between concentration indices and unforced errors. Overall, these findings suggest that concentration is critical mental skill in tennis and can be improved through systematic training program

Functional Characterization of Siberian Wild Rye Grass \u3cem\u3eEsHSP 16.9\u3c/em\u3e Gene Conferring Diverse Stress Tolerance in Prokaryotic Cells

Siberian wild rye (Elymus sibiricus L.) is a perennial, caespitose, and self-pollinating grass indigenous to Northern Asia and also is widely distributed from Northern Europe to Japan. The plant shows strong environmental adaptability with tolerance to drought and cold; thus, it is often used as forage resources (Yan et al., 2007). Environmental stresses caused by global warming are acknowledged to be as a serious issue in agriculture due to reductions of crop productivity (Ahuja et al., 2010). Genetic natural breeding of Siberian wild rye would potentially increase the productivity of forage crops; however, genetic studies on this grass have yet to be conducted. Heat shock proteins (Hsps) are the well characterized stress inducible proteins playing as molecular chaperones in prokaryotes and eukaryotes. We have also identified two differently localized small Hsps: rice chloroplastic and alfalfa mitochondrial Hsps confer tolerance to oxidative and heat stresses in tall fescue and to salinity and arsenic stresses in E. coli, tobacco, and tall fescue, respectively (Lee et al., 2012a; Lee et al., 2012b). Here, we cloned the small Hsp16.9 gene from various heat stress-induced fragments in Siberian wild rye using differentially expressed gene (DEG) analysis. We examined the mRNA expression of EsHsp16.9, in vitro molecular chaperone activity and in vivo stress tolerance by using a prokaryotic system against diverse environmental stresse

Research on How Emotional Expressions of Emotional Labor Workers and Perception of Customer Feedbacks Affect Turnover Intentions: Emphasis on Moderating Effects of Emotional Intelligence

Previous studies have used various external variables and parameters as well as moderator variables such as emotional intelligence have been to understand emotional labor and its related problems. However, a comprehensive model to study such variables’ correlations with each other and their overall effect on emotional labor has not yet been established. This study used a structural equation model to understand the relationship between employees’ expression of emotional labor and perception of customer feedbacks. The study also looked at how the perception of customer feedback affects emotional exhaustion in order to understand how emotional exhaustion affects job satisfaction and turnover intentions. Further, in order to fully understand the effects of emotion on emotional labor at the service contact points, this study developed and tested a model of emotional labor with four factors of emotional intelligence as moderating factors. Five hundred and seventy nine emotional labor workers in service industries in the United States were collected and 577 valid survey results have been analyzed. The result shows that there exists moderating effects of emotional intelligence on how employees’ Deep Acting and Surface Acting recognize customers’ reactions, both positive and negative, that would affect employees’ Emotional Exhaustion and Job Satisfaction, and hence, Turnover Intention. The result suggests that employees with better understanding of their own emotions, although they are more likely to recover from emotional exhaustion, experience a greater negative effect when there is a discrepancy between what they feel and how they should act