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조직시민행동의 이론적 고찰 : 호텔산업에의 적용성을 중심으로
하헌국,김서연 동국대학교 관광산업연구소 2000 관광·호텔경영연구 Vol.2 No.1
In this study, literature on employee citizenship performance was reviewed. This review provides justification for the theoretical reliance on a recent conceptualization of citizenship performance derived from political philosophy. Further, it comprises the relevance of understanding the citizenship performance of contact employees and developing a citizenship measure specifically for this unique organizational position. It also includes the need for empirical research on the relationship between contact employee citizenship and service effectiveness. The next section reviewed literatures on citizenship rights and responsibilities and social exchange. Importantly, this review provides a basis for the inclusion of the independent variables in the future empirical study. It also provides the theoretical background for two competing theoretical models of citizenship performance. The last section of the literature review discussed relevant conceptual and empirical research on each of the independent variables in the future empirical study. This review provides an overview of previous research on each independent variable and further presents evidence concerning two competing theoretical models.
분석결과 검증 및 신뢰성 확보를 위한 실험실간 협력 실험
박혜진,고광용,한국탁,김일중,이용재,김성헌,이규승 충남대학교 농업과학연구소 2005 농업과학연구 Vol.32 No.2
The residual study of pesticide has been used in various areas, such as food safety, environmental protection, establishment of tolerance, and explaining the pathway and reaction mode of pesticides, and its importance was expected to increase further more. The aspect of food safety, the pesticide residue survey have been practiced at many organizations, but there were no verification of analytical results at present. In this experiment, we focused on instrumental stability, including response of each instrument and the recovery ratio of each organization's method. As samples for this experiment, we prepared cucumber and sesame, and chose 4 pesticides (bifenthrin, chlorpyrifos, diazinon, and ethoprophos), which were mostly detected from pesticide residue survey and widely used for each crop. The standard deviation of peak areas in the chromatogram of each pesticide were under 1.212 %, so it showed that most instruments were stable. The relationship of recovery ratio of each organization were over 0.996 for every pesticide and each organization. Finally, the analytical results for pesticide residue from each participated organization were not statically significant and we could put confidence in the result from each organization.
Kim, Kook Hwan,Jeong, Yeon Taek,Oh, Hyunhee,Kim, Seong Hun,Cho, Jae Min,Kim, Yo-Na,Kim, Su Sung,Kim, Do Hoon,Hur, Kyu Yeon,Kim, Hyoung Kyu,Ko, TaeHee,Han, Jin,Kim, Hong Lim,Kim, Jin,Back, Sung Hoon,Ko Nature Publishing Group, a division of Macmillan P 2013 Nature medicine Vol.19 No.1
Despite growing interest and a recent surge in papers, the role of autophagy in glucose and lipid metabolism is unclear. We produced mice with skeletal muscle–specific deletion of Atg7 (encoding autophagy-related 7). Unexpectedly, these mice showed decreased fat mass and were protected from diet-induced obesity and insulin resistance; this phenotype was accompanied by increased fatty acid oxidation and browning of white adipose tissue (WAT) owing to induction of fibroblast growth factor 21 (Fgf21). Mitochondrial dysfunction induced by autophagy deficiency increased Fgf21 expression through induction of Atf4, a master regulator of the integrated stress response. Mitochondrial respiratory chain inhibitors also induced Fgf21 in an Atf4-dependent manner. We also observed induction of Fgf21, resistance to diet-induced obesity and amelioration of insulin resistance in mice with autophagy deficiency in the liver, another insulin target tissue. These findings suggest that autophagy deficiency and subsequent mitochondrial dysfunction promote Fgf21 expression, a hormone we consequently term a 'mitokine', and together these processes promote protection from diet-induced obesity and insulin resistance.
Pheochromocytoma 환자에서 Enflurane 마취와 Catecholamine 의 변화
김동일,김교상,이동호,심재철,정파종,전세웅,서정국,유희구,전종헌,김경헌 대한마취과학회 1992 Korean Journal of Anesthesiology Vol.25 No.1
The Department. of Anesthesiology of Hanyang University had a case of operation for pheo- chromocytoma. For the operation of pheochromocytoma, used to prazosin for preoperative treatment of hypertension and used to enflurane as inhalational anesthetic, treated with sodium nitroprusside for severe elevation of blood pressure during operation, used to vecuronium for neuromuscular blocker. Also we tried to get the knowledge about the variation of catecholamine concentration in blood through operation. As we used to the other drugs with adequate amount of fluid without any other complication in this operation we reported here with other references and our experience of a case of operation for remove of pheochromocytoma.
Pentaspan 이 쥐의 복부대동맥과 신동맥의 혈관긴장도에 미치는 영향
김교상,이동호,심재철,전세웅,서정국,유희구,전종헌,김주완,김경헌,승익상 대한마취과학회 1993 Korean Journal of Anesthesiology Vol.26 No.3
The Pentaspan is a high molecular weight(250,000), hyperosmolar(320 mOsm/l) colloid solution and blood volume expander in clinical practice. Many researches revealed the decreasing of systemic vascular resistance and pulmonary vascular resistance after Pentaspan administration in vivo. Some colloid solution is contraindicated in acute renal failure. We tried to confirm the direct effects of the Pentaspan and its mechanism on the abdominal aorta and renal artery in vitro. The rat abdominal aorta and renal artery were precontracted with norepinephrine(10^(-7) M/l) in 50 ml Krebs solution and 5 ml Pentaspan was infused. Ten mininutes after, changes of the vascular tones were obtained. The results were as follows. 1) The vascular tones were significantly decreased in both vessels. 2) Abdominal aorta group, renal artery group and with or without endothelium group were not significant different each other. 3) The vascular tones were not affected by with or without endothelium, indomethacin and methylene blue pretreatment. Smooth muscles were induced relaxation by the Pentaspan infusion and the relaxation were not dependent to endothelium derived relaxing factor, prostanoid and cyclic guanosinemonophosphate
술후 정맥 자가통증조절에서 Nalbuphine 의 용량에 따른 효과 비교
김동원,김성태,심재철,서정국,전정우,김경헌,전종현 대한마취과학회 2001 Korean Journal of Anesthesiology Vol.40 No.2
Background: The management of postoperative pain with traditional narcotic analgesic regimen is associated with an unacceptably high failure rate and at best has represented a cautious compromise between adequate analgesia and the risk of complications, particularly that of respiratory depression. The purpose of this investigation was to compare the efficacy and safely of nalbuphine given by patient-controlled analgesia (PCA) with differential dosages after total knee replacement. Methods: A double-blind clinical trial of 75 patients who received intravenous nalbuphine with patient-controlled analgesia during the postoperative first 48 hours after total knee replacement, was carried. Patients were assigned to three groups by the concentration of nalbuphine: Group 1 (n = 25), 2 mg/ml; Group 2, 4 mg/ml; Group 3, 6 mg/ml. The settings of PCA in three groups were same. Results: Visual analog scale (VAS) scores were used to assess pain. Group 2 and 3 patients reported significant lower VAS over the postoperatively 6 hours and 12 hours at either rest or movement compared to group 1. PCA demands, delivered doses and PCA nalbuphine dosage per hours except supplemental analgesic doses in the first 48 hours were lower in group 2 and 3 compared to group 1. There were significant differences among groups at postoperatively 6 and 12 hours in nausea, vomiting and sedation of the side effects. Conclusions: IV PCA with nalbuphine is thought to be potent and safe for postoperative pain relief without the major morbidity like respiratory depression, in addition the careful observation and treatment on the side effect like nausea, vomiting and sedation, is surely needed. (Korean J Anesthesiol 2001; 40: 195 ~200)
Analysis of the Microstructure and Oxidation Behavior of Some Commercial Carbon Fibers
Kim, Dae-Ho,Kim, Bo-Hye,Yang, Kap-Seung,Bang, Yun-Hyuk,Kim, Sung-Ryong,Im, Hun-Kook Korean Chemical Society 2011 대한화학회지 Vol.55 No.5
The relationship between the microstructure, mechanical properties, and oxidation behavior of pitch-, polyacrylonitrile (PAN)-, and Rayon-based carbon fibers (CFs) has been studied in detail. Three types of carbon fiber were exposed to isothermal oxidation in air and the weight change was measured by thermogravimetric analyzer (TGA) apparatus. After activation energy was gained according to the conversion at reacting temperature, the value of specific surface area and the surface morphology was compared, and the reaction mechanism of oxidation affecting development of pores of carbon fibers was examined. This study will lead to a new insight into the relationship between the microstructure and mechanical properties of carbon fibers.
Kim, Youngsoo,Kim, Seong Hun,Kim, Kook Hwan,Chae, Sujin,Kim, Chanki,Kim, Jeongjin,Shin, Hee-Sup,Lee, Myung-Shik,Kim, Daesoo IRL Press 2015 Human molecular genetics Vol.24 No.25
<P>Really interesting new gene (RING) finger protein 170 (RNF170) is an E3 ubiquitin ligase known to mediate ubiquitination-dependent degradation of type-I inositol 1,4,5-trisphosphate receptors (ITPR1). It has recently been demonstrated that a point mutation of <I>RNF170</I> gene is linked with autosomal-dominant sensory ataxia (ADSA), which is characterized by an age-dependent increase of walking abnormalities, a rare genetic disorder reported in only two families. Although this mutant allele is known to be dominant, the functional identity thereof has not been clearly established. Here, we generated mice lacking <I>Rnf170</I> (<I>Rnf170<SUP>−/−</SUP></I>) to evaluate the effect of its loss of function <I>in vivo</I>. Remarkably, <I>Rnf170<SUP>−/−</SUP></I> mice began to develop gait abnormalities in old age (12 months) in the form of asynchronous stepping between diagonal limb pairs with a fixed step sequence during locomotion, while age-matched wild-type mice showed stable gait patterns using several step sequence repertoires. As reported in ADSA patients, they also showed a reduced sensitivity for proprioception and thermal nociception. Protein blot analysis revealed that the amount of Itpr1 protein was significantly elevated in the cerebellum and spinal cord but intact in the cerebral cortex in <I>Rnf170<SUP>−/−</SUP></I> mice. These results suggest that the loss of <I>Rnf170</I> gene function mediates ADSA-associated phenotypes and this gives insights on the cure of patients with ADSA and other age-dependent walking abnormalities.</P>