암모니아 분위기에서 열처리된 GaOOH와 ZnO 혼합분말의 구조적·광학적 성질

송창호,신동휘,변창섭,김선태,Song, Changho,Shin, Dongwhee,Byun, Changsob,Kim, Seontai 한국재료학회 2012 한국재료학회지 Vol.22 No.11

The purpose of this study is to investigate the crystalline structure and optical properties of (GaZn)(NO) powders prepared by solid-state reaction between GaOOH and ZnO mixture under $NH_3$ gas flow. While ammoniation of the GaOOH and ZnO mixture successfully produces the single phase of (GaZn)(NO) solid solution within a GaOOH rich composition of under 50 mol% of ZnO content, this process also produces a powder with coexisting (GaZn)(NO) and ZnO in a ZnO rich composition over 50 mol%. The GaOOH in the starting material was phase-transformed to ${\alpha}$-, ${\beta}-Ga_2O_3$ in the $NH_3$ environment; it was then reacted with ZnO to produce $ZnGa_2O_4$. Finally, the exchange reaction between nitrogen and oxygen atoms at the $ZnGa_2O_4$ powder surface forms a (GaZn)(NO) solid solution. Photoluminescence spectra from the (GaZn)(NO) solid solution consisted of oxygen-related red-emission bands and yellow-, green- and blue-emission bands from the Zn acceptor energy levels in the energy bandgap of the (GaZn)(NO) solid solutions.

건식수치료가 요통환자의 통증과 요부장애에 미치는 영향

송창호,배하석,이승원,Song, Chang-Ho,Bae, Ha-Suk,Lee, Seung-Won 대한물리치료학회 2006 대한물리치료학회지 Vol.18 No.2

Purpose: The purpose of this study was to evaluate the effects of dry-hydrotherapy to release pain in patient with low back pain. Methods: The subjects of the study were fifty patient with low back pain in orthopedic clinic. Fifty patients who had low back pain were randomly divided into 2 groups, 1) dry-hydrotherapy group 2) control group. Visual analog scale(VAS) and Oswestry low back pain disability questionnaire were measured before and after treatment. The treatment plan Was as follows; 15 min. exercise per day and 5 days per week for 2 weeks. Results: 1. Before dry-hydrotherapy, there was no significant difference in VAS score and Oswestry low back pain disability questionnaire score between two groups. 2. The VAS score was significantly decreased in both groups after 2-week dry-hydrotherapy and the decrease in the AS score in dry-hydrotherapy group was significantly lower than in control group. 3. The Oswestry low back pain disability questionnaire score was significantly decreased in both groups after 2-week dry-hydrotherapy and the decrease in Oswestry low back pain disability questionnaire score dry-hydrotherapy group was significantly lower than in control group. Conclusion: In conclusion, the dry-hydrotherapy was effective to alleviate pain in patients with low back pain.

대퇴절단환자의 고관절 등속성근력비율에 관한 연구

송창호,이완희,Song, Chang-Ho,Lee, Wan-Hee 대한물리치료과학회 2003 대한물리치료과학회지 Vol.10 No.1

The purpose of this study is to provide guideline of muscle strengthening exercise for preparing ambulation by presenting suitable ratio of muscle power of agonist & antagonist, and that of concentric & eccentric contraction on behalf of amputee's normal ambulation training and it's strenthening as well. 7 Subjects who have femur amputee for experimental group were able to ambulate naturally without inconvenience and 20 adult subjects of comparison group for comparison were considered to be free from disturbance of ambulation. The method of study was to measure the muscle power of hip pint, was to figure out the ratio of agonist & antagonist, concentric contraction & eccentric contraction, and was to find out mean and standard deviation of each measurement. Every numerical value of comparison was tested by Mann-whitney and comparison group's comparison between left & right value was done with t-test. Results are as followings : 1) Extension force was stronger than flexor force and had no remarkable difference(p<0.05) 2) For normal adults, adduction farce was stronger than abduction force and for amputees, abduction force was stronger while adduction force was the same as the normal without showing remarkable difference(p<0.05) According the result above, I make an assumption that maintaining a proper ratio of muscle power on strengthening exercise for amputee's ambulation training & rehabilitation and finally bring out an improvement of transfer and ambulation.

하악골에 발생한 유골골종

송창호,최진우,Song, Chang-Ho,Choi, Jin-Woo 대한영상치의학회 2010 Imaging Science in Dentistry Vol.40 No.4

A 12-year-old female was referred from a dental clinic due to a radiolucent area under the lower right first and second premolars. The lesion was diagnosed as a simple bone cyst radiographically. However, she complained lasting pain during 10 month follow up. Therefore curettage was performed and it defined as an osteoid osteoma on the histopathologic examination. As the lesion recurred, one year later, enucleation was performed. We report this case to help the diagnosis of osteoid osteoma in mandible.

GaOOH로부터 GaN 분말의 합성에 미치는 B₂O₃의 첨가효과

송창호,신동휘,변창섭,김선태,Song, Changho,Shin, Dongwhee,Byun, Changsob,Kim, Seontai 한국재료학회 2013 한국재료학회지 Vol.23 No.2

In this study, GaN powders were synthesized from gallium oxide-hydroxide (GaOOH) through an ammonification process in an $NH_3$ flow with the variation of $B_2O_3$ additives within a temperature range of $300-1050^{\circ}C$. The additive effect of $B_2O_3$ on the hexagonal phase GaN powder synthesis route was examined by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Fourier transformation infrared transmission (FTIR) spectroscopy. With increasing the mol% of $B_2O_3$ additive in the GaOOH precursor powder, the transition temperature and the activation energy for GaN powder formation increased while the GaN synthesis limit-time ($t_c$) shortened. The XPS results showed that Boron compounds of $B_2O_3$ and BN coexisted in the synthesized GaN powders. From the FTIR spectra, we were able to confirm that the GaN powder consisted of an amorphous or cubic phase $B_2O_3$ due to bond formation between B and O and the amorphous phase BN due to B-N bonds. The GaN powder synthesized from GaOOH and $B_2O_3$ mixed powder by an ammonification route through ${\beta}-Ga_2O_3$ intermediate state. During the ammonification process, boron compounds of $B_2O_3$ and BN coated ${\beta}-Ga_2O_3$ and GaN particles limited further nitridation processes.

여드름 균의 항균 활성 및 생리활성 효과가 우수한 한약재 추출물의 탐색

송창호 ( Chang Ho Song ),임영훈 ( Young Hoon Lim ),최문경 ( Moon Kyung Choe ),김학주 ( Hak Ju Kim ) 대한면역약침학회 2014 대한면역약침학회지 Vol.3 No.2

Objectives : The aim of this study is screening of effective anti-microbial activity and bio-activity from herbal medicine. Methods : In this study, analyzed the amount of total sugar, reducing sugar, protein and flavonoid of herbal medicine. Screening of anti-microbial properties of acnes strains. The anti-oxidative effect of herbal medicine was analyzed by investigating 1,1-diphenyl-2-picryl hydrazyl free radical scavenging activity. To investigate the anti-inflammatory effect, cyclooxygenase-2, tumor necrosis factor-a and interleukin-6 were measured. Results : The anti-microbial activity of 11 herbal medicine extracts. 7 herbal medicine extracts showed relatively higher anti-oxidative and anti-inflammatory effect. Also showed Inhibiting cyclooxygenase-2, tumor necrosis factor-a and interleukin-6. Conclusions : Herbal medicine extracts have anti-oxidant and anti-inflammatory effect, and inhibition effect of the cyclooxygenase-2, tumor necrosis factor-a and interleukin-6.

현대인의 피해의식과 극복

송창호(Song, Chang-Ho) 신영어영문학회 2015 신영어영문학 Vol.60 No.-

This paper aims to compare and analyze Saul Bellow’s first two novels in terms of modern people’s victimized consciousness and overcoming it. Joseph in Dangling Man creates his ideal construction of reality which he can live by. However, it is not appropriate for his circumstances, and he falls into idealistic fabrication and finally gives up his utopian hope. Therefore, Joseph’s return to society is faint and his self-recognition and social awareness still remains imperfect. In The Victim, Asa Levethal realizes an individual awareness and social responsibility for others through two problems of his sick nephew and an anti-Semite Kirby Allbee. At the first time he rejects any responsibility for Mickey’s sickness and Kirby’s plight, but gradually he gets to realize that he should be responsible for them. He recognizes his victimization as an inevitable phenomenon of life and realizes a moral joint responsibility of life. Consequently, Asa Leventhal seems to accept himself and others more positively than Joseph after suffering.

『우왕 헨더슨』(Henderson the Rain King)

송창호(Changho Song) 한국영미어문학회 2010 영미어문학 Vol.- No.97

Modern novels usually describe life and death, but it seems to be important how writers treat their themes with the materials of life and death. Henderson is one of Bellow's heroes in an existential dilemma, yearning for meaningful life, but he finally finds only chaos and meaninglessness. Therefore, in the primitive Africa, he takes a spiritual journey and expects to find an answer of his essential problem; namely, his inner longing of "I want". The journey is a quest for reality in his life. Henderson visits two tribes in Africa: the Arnewi and the Wariri. They symbolize two aspects of human condition: life and death. From the Arnewi Henderson learned the great human desire to live; Grun-tu-molani. This concept greatly influences him for the contentment and happiness of his life. On the other hand, from the Wariri and King Dahfu, he learned how to encounter and overcome death. Especially Dahfu teaches Henderson courage and sacrifice through the adventure of capturing a lion. In the end, Henderson bursts his spirit's sleep and has service ideal for others after his adventures in Africa. He wants to meet his wife and even the persons whom he doesn't like to meet. He makes a decision to be an active and positive person in his society. This novel can be evaluated to be the best positive one in Bellow's works.

토석류 사례 분석을 통한 구조물 취약곡선 개발

송창호(Chang-Ho Song),이지성(Ji-Sung Lee),응유엔 호 홍 듀이(NGUYEN HO HONG DUY ),김윤태(Yun-Tae Kim) 한국방재학회 2023 한국방재학회논문집 Vol.23 No.4

현재 이상기후로 인해 사면재해가 많이 증가하고 있다. 특히 토석류는 인명 및 사회기반시설에 큰 피해를 주고 있다. 일반적으로토석류 유동해석을 통해 얻는 위험강도와 취약곡선을 바탕으로 토사재해 취약성 평가를 수행한다. 취약성 평가의 신뢰성은 정확한 위험강도 산정과 취약곡선에 크게 의존한다. 본 연구에서는 2011년부터 2020년까지 발생한 총 27개 토석류에 대하여GIS 기반 지형학적 특성 정보를 수집하고 토석류 거동을 분석하였다. 이를 바탕으로 연행침식과 건물의 영향을 고려하여토석류 위험 강도를 분석하였다. 토석류로 피해받은 건물을 보강 콘크리트 구조(RC frame)와 비보강 콘크리트 구조(Non-RC frame) 두 가지 유형으로 구분하여 건물의 손상 정도(Slight, Moderate, Extensive, Complete)를 분석하였다. 그리고 건물의 손상정도와위험강도의 관계를 비선형 회귀분석을 통해 취약곡선과 취약함수를 도출하였다. 이와 같은 취약곡선은 토사재해 취약성 평가를 위한 기초자료로 활용될 수 있을 것으로 판단된다. In recent years, owing to climate change various slope disasters are rising. Debris flow causes large damage to human life and social infrastructure. Generally, the vulnerability assessment of slope disasters is carried out using vulnerability curve, which consists of hazard intensity and damage index. A vulnerability curve needs to be highly reliable. In this study, GIS-based topographical characteristics and the information about 27 debris flow events that occurred between 2011 and 2020 were collected and analyzed. The hazard intensity of the debris flow events was evaluated considering entrainment of soils and buildings. Two types of buildings, non-reinforced concrete structure (non-RC) and reinforced concrete structure (RC frame) were classified into four types of vulnerability indices (slight, moderate, extensive, and complete) based on the degree of damage to the building. The relationship between the hazard intensity and the degree of damage to the building was studied through nonlinear regression analysis to derive a vulnerability curve according to the hazard intensity. The proposed vulnerability curve can be used as fundamental data for the vulnerability assessment of landslide disasters.

노인 여성의 신발 선호도와 착용 실태에 대한 연구

송창호 ( Chang Ho Song ),이종대 ( Jong Dae Lee ),권유정 ( Yoo Jung Kwon ),이전형 ( Jeon Hyeong Lee ),박진현 ( Jin Hyun Park ),송현남 ( Hyun Nam Song ),김경 ( Kyung Kim ) 대한물리의학회 2009 대한물리의학회지 Vol.4 No.2

Purpose:The purpose of this study was to investigate how much the type of footwear affects these preference and wearing conditions in older women. Methods:Two hundred eight women aged 60∼87 years were recruited from the elder`s College and welfare center in Daegu. Each subject performed questionnaire surveys. Chi-square(χ²) test was used to compare the outcome for differences of age, weight, height, heel height and footwear size. SPSS 12.0 program was used in this study. Results:The type of their possessive shoes were casual shoes (24.8%), running shoes (20.1%) and dress shoes (16%) etc, The type of their short-distance outdoor shoes were casual shoes (32.1%), running shoes (31.4%) etc. The type of their long-distance outdoor shoes were platform shoes (40.3%), dress shoes (31%) etc. Conclusion:The heel height of platform shoes had no relation with demographic factors (age, weight, height), but the size of platform shoes had relation with demographic factors such as age and height except for weight(p<0.05).