Lee, Gi-ven․Song, Mi-jeong. 2011. Language Socialization Practices of Seven Adolescents of Korean Heritage in the US. The Sociolinguistic Journal of Korea, 20(1). pp. 135-159. This study explores cultural and linguistic practices, identity negotiation, and power dynamics manifested in language socialization practices in a recreational setting of seven high school and college students of Korean heritage currently residing in the US. In conjunction with interviews, audio-tapings and observations of these students' weekly basketball games serve as the data sources. Analyses of data demonstrate that the basketball game offers a prime context for these students to speak Korean, practice Korean sociocultural values and rules, negotiate their identity, and establish their own position in the group. While they all speak English for the majority of time in their day-to-day interactions, the students mostly use Korean in the basketball setting, particularly when talking about Korea-related topics. In terms of negotiating their ethnic identity, the Korean-born students seem to negotiate their identity more strictly than the US-born students, who appear to negotiate their identity more ambiguously and flexibly. Also, the power and authority to control the interaction seems to depend upon the symbolic and material resources that the students own.

The analytical method for 16 organophosphorus pesticides was developed in this study. The 16 organophosphorus pesticides were analyzed by liquid chromatography-tandem mass spectrometry (LC/MS/MS) using on-line solid phase extraction (on-line SPE) with PLRP- S cartridge. Analysis of all analytes in the MS/MS was processed in the electrospray ioni-zation (ESI) positive mode. They are Azinphos ethyl, Chlorfenvinphos, Ethion, Famphur, Phosmet, Phosphamidon, Terbufos, Aspon, Chlorpyrifos-methyl, Crotoxyphos, Dichlofenthi-on, Dicrotophos, Fonofos, Thionazin, Dimethoate and Iprobenfos. Limits of detection (LODs) and Limits of quantification(LOQs) were obtained as 0.8~2.0 ng/L and 2.6~6.4 ng/L, respectively. All compounds were not detected at the 8 sampling points of the raw water and clean water.

This study accessed the adsorption characteristics of the 9 trihalomethanes (THMs) on coal-based granular activated carbon (GAC). The breakthrough appeared first for CHCl3 and sequentially for CHBr2Cl, CHBr3, CHCl2I, CHBrClI, CHBr2I, CHClI2, CHBrI2, and CHI3. The maximum adsorption capacity (X/M) for the 9 THMs with apparent breakthrough points ranged from 1,175 μg/g (for CHCl3) to 11,087 μg/g (for CHI3). Carbon usage rate (CUR) for CHCl3 was 0.149 g/day, 5.5 times higher than for CHI3 (0.027 g/day).

The aims of this study were to investigate and confirm the occurrence and distribution patterns of blood lipid lower agents (BLLAs) in Nakdong river basin (mainstream and its tributaries). 4 (atorvastatin, lovastatin, mevastatin and simvastatin) out of 5 statins and 2 (clofibric acid and zemfibrozil) out of 3 fibrates were detected in 29 sampling sites and simvastatin (>50%) was predominant compound followed by atorvastatin, lovastatin and clofibric acid. The total concentration levels of BLLAs on April, August and November 2009 in surface water samples ranged from ND∼25.7 ng/L, ND∼18.8 and ND to 38.8 ng/L, respectively. The highest concentration level of BLLAs in the mainstream and tributaries in Nakdong river were Goryeong and Jincheon-cheon, respectively. The sewage treatment plants (STPs) along the river affect the BLLAs levels in river and the BLLAs levels decreased with downstream because of dilution effects.