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태권도장 관원생 학부모의 블랙컨슈머 행동과 지도자의 정서적 소진 및 직무배태성의 관계
황인택,정권혁 한국체육과학회 2023 한국체육과학회지 Vol.32 No.4
The purpose of this study is to analyze the relationship between black consumer behavior which can appear in Taekwondo gyms and emotional exhaustion and job embeddedness. Quantitative research examined the relationship between parents’ black consumer behavior and Taekwondo gym instructors’ emotional exhaustion and job embeddedness, by using the structured equation model. Then, it selected 490 Taekwondo instructors working in Taekwondo gyms located at Seoul and Gyeonggi-do, by using the convenient sampling method, a kind of the non-probability sampling method. Next, qualitative research on Taekwondo gym instructors was conducted to account for the quantitative results. This study recruited 10 instructors working in Taekwondo gyms located at Seoul and Gyeonggi-do, for more than five years. Hence, it drew several results by conducting in-depth interviews with the subjects based on the interview protocol. Based on such methods, the following findings were drawn: First, the effect of the black consumer behavior on the emotional exhaustion was analyzed to show the significant path coefficient (.676(t=5.887)). Second, the effect of the black consumer behavior on the job embeddedness was analyzed to show the significant path coefficient(-.375(t= -3.935)). Third, the effect of the emotional exhaustion on the job embeddedness was analyzed to show the significant path coefficient (.456 (t=4.849)).
황인택,김용호,이주영,최병렬,이은섭 한국작물학회 2014 한국작물학회지 Vol.59 No.4
Variation of anthocyanin contents were analyzedby different growing environments, three locations over threeyears with 3 black colored soybeans. Anthocyanin contentswere different according to growing location, genotypes andplanting time, so it can be concluded that anthocyanin contentwas effected by environmental and genetic variation. Plantingdate seemed to have a much greater influence on anthocyanincontent than cultivar and location. Among different plantingdates, anthocyanin contents increased in the seeds plantedon June 15 rather than did May 30 and May 15. Comparedwith 3 cultivars and 3 locations, Ilpumgeomjungkong andYeonchun had higher contents such as 11.58 mg/ and 9.85mg/g, respectively. The correlations between color indexand anthocyanin content were analyzed by Hunter’value. L(lightness) and b (yellowness) values were correlated negativelywith D3G, C3G, Pt3G and total anthocyanin content whilea (redness) value was correlated positively. The correlationsbetween meteorological factors and anthocyanin content wereanalyzed. Anthocyanin content was correlated negatively withmean temperature and accumulated temperature whereas meandaily temperature difference showed positive correlation. Wecould conclude that the area in which mean temperaturewas low and daily temperature difference was high is goodfor attempts to improve black soybean seed quality by theincrease of anthocyanin contents
Chlorsulfuron 및 Imazaquin에 의한 옥수수 Acetolactate Synthase 활성의 저해특성
황인택,김기주,이희재,조광연,전재철,Hwang, I.T.,Kim, K.J.,Lee, H.J.,Cho, K.Y.,Chun, J.C. 한국잡초학회 1996 Weed&Turfgrass Science Vol.16 No.2
옥수수 잎으로부터 추출한 ALS를 대상으로 하여 CHL과 IMA의 상호작용, ALS의 기질인 pyruvate 및 2-ketobutyrate에 대한 친화도, 저해양식의 차이 등을 조사한 결과는 다음과 같다. 1. ALS 에 대한 CHL의 $I_{50}$값은 100nM이었으며 IMA의 값은 $5{\mu}M$로 나타나 CHL의 ALS 저해활성은 IMA보다 약 50배 정도 높았다. 2. ALS에 대한 시험관내에서의 실험에서 두 제초제의 동시처리시 상가적인 ALS의 저해효과가 나타났으나, 상호 순차적 체계처리의 경우에서는 먼저 처리한 제초제에 의한 저해효과가 지배적으로 나타났다. 3. 제초제에 의한 ALS 활성의 저해는 시험관내에서 10분 이내에 대부분 이루어졌다. 4. ALS의 활성은 분지아미노산에 의해 저해되었는데 Val과 Leu에 의한 저해가 Ile에 의한 저해보다 크게 나타났다. 또한 이들을 동시에 혼합처리하면 0.1mM의 농도에서도 ALS의 활성이 65% 정도 저하되었다. 5. 2-Ketobutyrate를 ALS의 기질로 첨가하면 pyruvate만을 기질로 사용하였을 때보다 측정가능한 ALS 활성이 2-ketobutyrate에 의해 농도의존적으로 감소되는 경향이었다. 6. ALS의 기질인 pyruvate에 대해 CH은 비경쟁적 저해제로 IMA는 반경쟁적 저해제로 작용하였다. The inhibition characteristics of chlorsulfuron [CHL, 2-chloro-N-[{ (4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino}carbonyl]benzenesulfonamide] and imazaquin [IMA, 2-{4,5-dihydro-4-methyl-4-(1-methy-lethyl)-5-oxo-1H-imidazol-2-yl}-3-quinolinecarboxylic acid] on acetolactate synthase(ALS) activity of corn plants were investigated. CHL and IMA rapidly inhibited ALS activity of corn plants in vitro. Their $I_{50}$ values for ALS activity were 100nM and $5{\mu}M$, respectively, indicating that CHL had 50 times more inhibitory effect on ALS activity than IMA. The first applied herbicide had a dominant inhibitory effect on ALS activity when the two herbicides were applied sequentially. Branched-chain amino acids, valine(Val), leucine(Leu), and isoleucine(Ile) showed a feedback inhibition on ALS activity ; Val or Leu had a more inhibitory effect on ALS activity than Ile. Branchedchain amino acids and CHL or IMA exhibited an additive effect on inhibiting ALS activity. This suggests that branched-chain amino acids inhibit ALS activity by a different mechanisms) from that of CHL or IMA. Apparent ALS activity, which was measured on the basis of the conversion of pyruvate to acetolactate, was decreased by the addition of 2-ketobutyrate into the ALS reaction mixture in a concentration-dependent manner. In addition, kinetic studies revealed that CHL acts as a noncompetitive inhibitor, while IMA acts as an uncompetitive inhibitor to ALS with respect to pyruvate.