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RISS 인기검색어
- 검색키워드
- 저자 : 김경남(Kim, Kyung-nam) (검색결과 786 건)
- 무료
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김경남,김주영,김현정,김희정,문유빈,문혜진,박언설,Kim, Kyoung-Nam,Kim, Ju-Young,Kim, Hyeon-Jeong,Kim, Hee-Jeong,Moon, Yoo-bin,Moon, Hye-Jin,Park, Eon-Seol 한국임상보건과학회 2020 한국임상보건과학회지 Vol.8 No.2
Purpose: The purpose of this study was to check the stress, stress and coping ability of nursing college students and to identify factors that influence college life adjustment. Method: This study was a descriptive research study to confirm the correlation between stress, stress response, coping ability, and college life adaptation of nursing college students, and to analyze the factors that influence college life adjustment. The data collection period was from August 17 to 23, 2020, for one week, the researcher directly explains the purpose and purpose of the study to 221 nursing college students nationwide, and online surveys to those who have agreed to participate in the study. The collected data were analyzed using SPSS Win 20.0 program. Results: Adaptation to college was negatively correlated with stress (r=-.285, p<.001), stress response (r=-.258, p<.001), and coping ability (r=.512, p<.001) had a positive correlation. The most significant factor influencing the study subjects' adaptation to college life was coping ability (β=.473, p<.001), followed by stress (β=-.185, p=.002) in the order of The explanatory power of the factors affecting the subject's adaptation to college life was 28.9%. Conclusion: As a result of this study, it means that nursing students' adaptation to college life has less stress and stress response, and higher coping ability increases college life adaptation. The factor that influenced the adjustment to college life was the most significant factor, followed by stress. In order for nursing students to adjust to college life smoothly, it is thought that coping measures to reduce stress and stress responses and overcome them are necessary.
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모델식물 애기장대에 대한 훈증제 메틸브로마이드의 약해발생 및 N-acetyl-L-cysteine, L-glutathione, indole-3-acetic acid의 약해억제 효과
김경남,김채은,박정은,유진성,김우성,전황주,김준란,이성은,Kim, Kyeongnam,Kim, Chaeeun,Park, Jungeun,Yoo, Jinsung,Kim, Woosung,Jeon, Hwang-Ju,Kim, Jun-Ran,Lee, Sung-Eun 한국환경생물학회 2021 환경생물 : 환경생물학회지 Vol.39 No.3
Understanding the phytotoxic mechanism of methyl bromide (MB), an essential fumigant during the quarantine and pre-shipment process, is urgently needed to ensure its proper use and reduce international economic losses. In a previous study, two main MB-induced toxic mechanisms such as reactive oxygen species (ROS) and auxin distribution were selected by analyzing transcriptomic analysis. In the study, a 3-week-old A. thaliana was supplied with 1 mM ROS scavengers [N-acetyl-L-cysteine (NAC) or L-glutathione (GSH)] and 1µM indole-3-acetic acid(IAA) three times every 12 h, and visual and gene expression assessments were performed to evaluate the reduction in phytotoxicity by supplements. Phytotoxic effects on the MB-4h exposed group were decreased with GSH application compared to the other single supplements and a combination of supplements at 7 days post fumigation. Among these supplements, GSH at a concentration of 1, 2, and 5mM was suppled to A. thaliana with MB-fumigation. During a long-term observation of 2 weeks after the fumigation, 5 mM GSH application was the most effective in minimizing MB-induced phytotoxic effects with up-regulation of HSP70 expression and increase in main stem length. These results indicated that ROS was a main key factor of MB-induced phytotoxicity and that GSH can be used as a supplement to reduce the phytotoxicity of MB.
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새로운 $Mg_{2}SnO_{4}:Mn$ 형광체의 광 발광 특성
김경남,정하균,박희동,김도진,Kim, Kyung-Nam,Jung, Ha-Kyun,Park, Hee-Dong,Kim, Do-Jin 한국세라믹학회 2001 한국세라믹학회지 Vol.38 No.9
A new $Mg_{2-x}MN_xSnO_4$ phosphor with an inverse spinel structure was synthesized by the solid-state reaction technique. The photoluminescence properties of the $Mg_2SnO_4$:Mn phosphors were investigated under 147nm -vacuum ultraviolet ray excitation. The Mn-doped $Mg_2SnO_4$ phosphor exhibited high emission intensity with the spectrum centered at 500nm wavelength. It was explained that the green emission in $Mg_2SnO_4$:Mn phosphor has originated from energy transfer from $^4T_1$ to $^6A_1$ of $Mn^{2+}$ ion at tetrahedral site of the spinel structure. The $Mn^{2+}$ ion concentration exhibiting the maximum emission intensity under the excitation of 147nm-vacuum ultraviolet ray was 0.25mol%. And the decay time of the phosphor was shorter than 10ms. 새로운 형광체로 역스피넬 구조를 갖는 $Mg_{2-x}MN_xSnO_4$ 조성을 선정하여 고상반응에 의하여 제조하였다. $Mg_2SnO_4:Mn$의 광발광 특성이 147nm 파장의 진공 자외선 여기하에 측정되었다. Mn의 첨가에 의하여 $Mg_2SnO_4$ 형광체는 500nm 파장에 발광 중심을 가지며 매우 높은 발광강도를 나타내었다. 이것은 스피넬 구조의 산소 사면체 배위에 위치하는 Mg 자리를 치환하여 들어가는 $Mn^{2+}$ 이온의 $^4T_1$ 상태로부터 $^6A_1$ 상태로의 에너지 전이에 의한 발광으로 해석되었다. 진공 자외선 여기하에 최대의 발광강도를 나타내는 Mn 활성제의 농도는 0.25mol%이었고, 잔광시간은 10ms 이하인 것으로 조사되었다.
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Porcelain의 표면코팅을 위한 Hematite 적색 안료의 특성
김경남,박현,원일안,Kim, Kyung-Nam,Park, Hyun,Won, Il-An 한국재료학회 2017 한국재료학회지 Vol.27 No.4
In this study, an ${\alpha}-Fe_2O_3$ (hematite) coated porcelain plate was sintered in a temperature range from $1100^{\circ}C$ to $1250^{\circ}C$ using ferrous sulfate. The specimens were investigated by X-ray diffractometer (XRD), scanning electron microscopy (FE-SEM), energy dispersive spectroscopy (EDS), and UV-visible spectrophotometer. It was confirmed that ${\alpha}-Fe_2O_3$ (hematite) was densely fused to the surface at several tens of ${\mu}m$, the ${\alpha}-Fe_2O_3$ (hematite) was in the form of thin platelet and polyhedra, and no other compounds appeared in the sintering process. In the specimen coated with ${\alpha}-Fe_2O_3$ (hematite), the reflectance spectra show a red absorption band of 560-650 nm. The $L^*$ value decreased from 53.18 to 46.94 with the firing temperature. The values of $a^*$ and $b^*$ were at 19.03 and 15.25 at $1100^{\circ}C$ and gradually decreased with increasing temperature; these values decreased rapidly at $1250^{\circ}C$ to 11.54 and 7.98, respectively. It is considered that the new phases are formed by the phase transition of the porcelain plate (clay), and thus the $a^*$ and $b^*$ values are greatly influenced.
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김경남,임수민,장여영,전다혜,정민주,정지희,조민희,Kim, Kyoung-Nam,Im, Soo-Min,Jang, Yeo-Yeong,Jeon, Da-Hye,Jeong, Min-Ju,Jeong, Ji-Hee,Cho, Min-Hee 한국임상보건과학회 2020 한국임상보건과학회지 Vol.8 No.2
Purpose: The purpose of this study was to understand the degree of nursing professional intuition, major satisfaction, clinical practice satisfaction, self-leadership, and career preparation behavior of nursing college students, and to identify factors that influence career preparation behavior. Method: This study was a descriptive research study to analyze the factors affecting career preparation behavior. The data collection period was from August 03 to 30, 2020 for 4 weeks. The survey conducted an online survey of 220 students in grades 3-4 who were enrolled in 6 nursing departments located in P metropolitan city and G province, and have clinical practice experience. The collected data were analyzed using SPSS Win 20.0 program. Results: Career preparation behavior had a significant positive correlation with nursing professional intuition(r=.455, p<.001) and self-leadership(r=.539, p<.001), and major satisfaction(r=-.337, p<.001) and clinical practice satisfaction(r=-.380, p<.001) had a significant negative correlation. Self-leadership(β=.424, p<.001) was the most significant factor influencing the study subjects' career preparation behavior, nursing professional intuition(β=.170, p=.010), clinical practice Satisfaction(β=.127, p=.047), employment information(β=.122, p=.023), major satisfaction(β=.137, p=.042) in the order, these variables were found in the order of The explanatory power of the factors affecting the subject's career preparation behavior was 40.2%. Conclusion: Therefore, in order to help nursing students' career preparation behavior, a strategy to provide a variety of employment information and a strategy for nursing intervention that can improve self-leadership, clinical practice satisfaction, and major satisfaction is required.
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