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Trial of Oral Metoclopramide on Diurnal Bruxism of Brain Injury
이호성,김형섭,서미리 대한재활의학회 2013 Annals of Rehabilitation Medicine Vol.37 No.6
Bruxism is a diurnal or nocturnal parafunctional activity that includes tooth clenching, bracing, gnashing, and grinding. The dopaminergic system seems to be the key pathophysiology of bruxism and diminution of dopaminergic transmission at the prefrontal cortex seems to induce it. We report two patients with diurnal bruxism in whom a bilateral frontal lobe injury resulted from hemorrhagic stroke or traumatic brain injury. These patients’ bruxism was refractory to bromocriptine but responded to low-dose metoclopramide therapy. We propose that administering low doses of metoclopramide is possibly a sound method for treating bruxism in a brain injury patient with frontal lobe hypoperfusion on positron emission tomography imaging.
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Effect of Thermal Annealing on Ni/Au Contact to p-GaN
이호성,문진영,김준호,안철현,조형균,이주영,김홍승 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.6
We deposited Ni (13 nm) / Au (30 nm) layers on p-GaN by using the dc sputtering method in order to produce low-resistivity Ohmic contacts. The Ni (13 nm) / Au (30 nm) contact layers were annealed in air for 15 min at various temperatures. The electrical and the structural properties of the Ni/Au contact to p-GaN were investigated. The current-voltage measurement showed that the resistance of the as-deposited sample was very high. However, the sample annealed at 600 ℃ showed Ohmic-like behavior with a specific contact resistance of 1.9 × 10−3 cm2. Further increasing the temperature caused the Ohmic-like behavior to be degraded. Transmission electron microscopy and Auger electron spectroscopy were used to characterize the interfacial structure between the Ni/Au electrode and the p-GaN layers. The Ni layer was in contact with the p-GaN before annealing. However, after annealing, the Au layer had diffused from the top layer to the interface. The Au layer on the p-GaN surface resulting from the indiffusion of Au atoms during annealing may contribute to effective Ohmic contact formation. We deposited Ni (13 nm) / Au (30 nm) layers on p-GaN by using the dc sputtering method in order to produce low-resistivity Ohmic contacts. The Ni (13 nm) / Au (30 nm) contact layers were annealed in air for 15 min at various temperatures. The electrical and the structural properties of the Ni/Au contact to p-GaN were investigated. The current-voltage measurement showed that the resistance of the as-deposited sample was very high. However, the sample annealed at 600 ℃ showed Ohmic-like behavior with a specific contact resistance of 1.9 × 10−3 cm2. Further increasing the temperature caused the Ohmic-like behavior to be degraded. Transmission electron microscopy and Auger electron spectroscopy were used to characterize the interfacial structure between the Ni/Au electrode and the p-GaN layers. The Ni layer was in contact with the p-GaN before annealing. However, after annealing, the Au layer had diffused from the top layer to the interface. The Au layer on the p-GaN surface resulting from the indiffusion of Au atoms during annealing may contribute to effective Ohmic contact formation.
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이호성,이유정,정윤희,남윤성,김성태,박언섭,홍석명,Yeong Kuk Yang,김형춘,정지훈 한국식품영양과학회 2015 Journal of medicinal food Vol.18 No.10
Obesity is a common cause of hyperlipidemia, which is a major coronary risk factor. Previous studies have shown red yeast rice (RYR) effectiveness in lowering low-density lipoprotein cholesterol. The aim of this study was to investigate the effects of RYR on obesity and hyperlipidemia. Mice were randomly separated into five groups: the control group with a normal diet, the high-fat diet (HFD) group fed a HFD without any treatment, and HFD-fed groups supplemented with RYR (1 g/kg/day for 8 weeks, 1 g/kg/day for 12 weeks, and 2.5 g/kg/day for 8 weeks). Body weight was recorded twice and food intake thrice weekly. Liver and fat pads were surgically removed and weighed. The levels of lipid parameters, liver enzymes, and leptin levels were measured. The HFD feeding resulted in obesity, which was associated with increases in body weight, liver weight, fat pad weight, liver enzymes, and plasma leptin levels with the development of hyperlipidemia. RYR prevented weight gain and fat pad weight in mice fed a HFD. RYR alleviated blood lipid parameters, liver enzymes, and leptin levels, and improved atherogenic index. These findings suggest that RYR has therapeutic potential in treating obesity and hyperlipidemia.
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이호성,박진호,김종배 한국IT정책경영학회 2018 한국IT정책경영학회 논문지 Vol.10 No.6
Recently, countries around the world are trying to strengthen their cyber capabilities in order to expand their profits and security in cyberspace, reflecting the fear that cyber threats will be more horrific to humans than natural disasters. South Korea has also been making efforts to prevent recurrence of hacking accidents after receiving the concerns and jealousy of many people due to military data leakage caused by the national defense hacking in September 2016. In the cyber domain, which is the fifth battlefield newly emerging in accordance with the development of information and communication technologies such as the 4th Industrial Revolution, the most important thing for enhancing cyber capability is the skilled workforce. The latest cyber-protection system is human-operated, and artificial intelligence must also learn the quality data judged by experts. However, securing a professional cyber manpower is not easy. In order to nurture and maintain the level of cyber professionals in a short period of time, a lot of efforts are needed, such as common job analysis, establishment of evaluation standards, and educational plans. In this study, we present the implications and the application method of US military, focusing on the management of cyber professional manpower in the US military leading the global cyber security.
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이호성,신정택,이한우 한국스포츠심리학회 2022 한국스포츠심리학회지 Vol.33 No.3
Purpose: The purpose of this study was to develop a inventory and verify its validity by exploring the concept definition and constituent factors of a sports help seeking attitude. Methods: In order to collect the data of this study, 106 university athletes were collected through open questionnaires, classified topics, and categorized them to suit the research subject. In addition, to verify the internal validity of the sports help seeking attitude inventory, preliminary questions, descriptive statistics analysis, reliability analysis, and exploratory factor analysis were performed on 275 university athletes. In order to additionally verify the factor structure of the developed inventory and verify external validity confirmatory factor analysis, convergence validity, discrimination validity, and prediction validity were also performed on 151 university athletes from other places. Results: Firstly, four factors were found out from university athletes’ attitude for sports assistance which are trust on expert, stigma tolerance, assistance need, and openness to interpersonal relationships. Also, university athletes were found to experience the need for mental control with experts, the pessimistic views toward them as well as the need for help from sports psychological counselors, and the help experience of parents and leaders the most. Secondly, sports assistance attitude inventory were developed by preliminary question technical statistics analysis, reliability analysis, exploratory and confirmatory factor analysis, 4 factors and 16 questions of sports assistance attitude inventory were developed in total. Thirdly, as a result of analyzing the external validity of the developed sports assistance attitude inventory, validity was found in convergent validity, and the predictive validity of discrimination was not found. Conclusion: Through this study it was found that university athletes have been in need of help. However, they haven’t been able to freely ask for help due to being stigmatized It is expected that using programs related to university athletes’ attitude for sports assistance and sports assistance inventory will improve university athletes’ attitude toward sports and contribute to comprehend their features in the future.
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