Comparative Infestation of Paragonimus westermani Metacercaria from Crayfish in Endemic Areas

Choi, Dong Wik,Kim, Min Sang,Joo, Chong Yoon 慶北大學校 醫科大學 1983 慶北醫大誌 Vol.24 No.1

慶尙北道내 肺吸蟲 浸潤地 溪谷에서의 가재의 最近 棲息狀과 가재에서의 폐흡충 피낭유충의 最近 寄生狀을 究明코저 1981年 10月부터 1982年 9月까지 6個處(達城郡 嘉昌面 蛇洞, 玉盆洞, 上院洞과 榮豊郡 豊基邑 錦溪, 英陽郡 英陽面 化川 및 靑松郡 府東面 上宣溪谷)를 調査對象溪谷으로 選定하여 調査한 後 1974年 朴 및 崔의 調査 成績과 比較하였다. 6個處의 肺吸蟲 浸潤地에서의 가재의 棲息密度는 1974年의 그 密度에 比하여 顯著히 低下되었으며 가재에서의 폐흡충 피낭유충의 寄生率과 그 寄生程度도 1974年의 成績에 比하여 낮았다. 가재의 體部位別 폐흡충 피낭유충의 寄生狀에 있어서는 1974年에는 가재의 全體部位에서 本피낭유충을 찾아 볼 수 있었는데 比하여 이번 調査에서는 가재의 頭胸部, 아가미 및 肝에서만 찾아볼 수 있었으며 가재 한마리當 폐흡충 피낭유충數도 全浸潤地에서 1974年에 比하여 1982年에는 甚히 적었다. 폐흡충 피낭유충이 寄生하는 가재의 數와 이들 가재에서의 本피낭유충의 數가 1982年에는 너무 적으므로 가재의 크기와 本피낭유충數 및 1974年의 調査成績과의 相關을 求할 수 없었다. 이번 調査 結果 1974年에서 1982年까지의 지난 8年間 폐흡충 浸潤地에서 가재의 棲息密度와 폐흡충 피낭유충이 寄生하는 가재의 數가 急激히 減少되었음을 알았다. In an attempt to determine the recent patterns of population density of the crayfish, Cambaroides similis, and infestation of the crayfish with the metacercaria of Paragonimus westermani in Kyungpook Province, Korea, the crayfish collected in the six endemic areas, Kum-ge, Wha-cheon, Sang-seon, Ju-dong, Ok-bun dong, and Sang-weon dong streams were examined from April, 1981 to September, 1982. The results obtained in 1982 were compared with the data derived from the crayfish collected at the same streams by Park and Choi(1974). The population density of crayfish in the six endemic areas of P. westermani in the present study decreased markedly compared with those in 1974. The infestation rate for the metacercaria of P. westermani in the crayfish examined and the intensity of infestation in the positive crayfish also decreased compared with those reported by Park and Choi(1974). In the 1974 survey, the metacercaria was found in all parts of the crayfish whereas it was found only in the cephalothorax, the gills, and the liver in the present suevey. In the average number of metacercariae perpositive crayfish (M.P.P.C), a pronounced reduction was encountered in all endemic areas between 1974 and 1982. The number of infested crayfish and the metacercaria of P. westermani in infested crayfish in 1982 was so small that it was impossible to analyze the relationship between the number of metacercaria and the length of crayfish and to compare the data between 1974 and 1982. It was found in the present study that the population density of crayfish in the endemic areas and the infestation of the crayfish with the metacercaria of P. westermani has decreased drastically over the eight-year period from 1974 to 1982.

코어안정화운동, 동방요법 및 병행처치가 골반변위에 따른 좌골신경통에 미치는 영향

김동호(Kim, Dong-Ho),김상현(Kim, Sang-Hyun),김성남(Kim, Sung-Nam),김재철(Kim, Jae-Cheol) 한국체육과학회 2019 한국체육과학회지 Vol.28 No.4

The purpose of this study was to confirm the effect of core stability exercise, dong-bang therapy, and combined treatment on reducing pain, pelvic correction and stress hormone concentration in patients suffering from sciatic neuralgia due to pelvic displacement. Middle aged(40~50age) suffering from sciatic neuralgia over 6 months were operated with core stability exercise, dong-bang therapy, and combined treatment 3 times a week for 12 weeks. VAS and X-ray was performed to collect pain scales and pelvic displacement data and cortisol and epinephrine concentration in blood were tested. 1. pain scale rate was reduced in all groups. especially, dong-bang therapy group and combined treatment group showed more directive pain reduce. 2. pelvic displacement improvement was not significant in core stability exercise group, and it was significant in dong-bang therapy group and combined treatment group. no significant difference was shown between dong-bang therapy group and combined treatment group. however, combined treatment group showed higher correction effect. 3. concentration of stress hormone was significantly increased in all groups after the first operation. after 12 weeks concentration level was reduced to same level before treatment. Dong-bang therapy and combined treatment improve pelvic displacement, and are effective treatments on reducing sciatic neuralgia due to pelvic displacement. combined treatment of dong-bang treatment and core stability exercise is considered an effective program of correction for pelvic displacement and maintenance.

족과관절염좌 환자에 대한 동씨침법과 일반침법의 효과에 대한 비교 연구

안호진,정동화,황규선,윤기붕,김태우,문장혁,백종엽,이상무,Ahn, Ho-jin,Jeong, Dong-hwa,Hwang, Kyu-seon,Yoon, Ki-bung,Kim, Tae-woo,Moon, Jang-huyk,Baek, Jong-yeob,Lee, Sang-moo 대한침구의학회 2003 대한침구의학회지 Vol.20 No.1

Objective: The purpose of this study is to compare the effects of Dong-si acupuncture therapy and General acupuncture therapy for the patients with acute ankle sprain. Methods : This study has been carried out for 60 cases of ankle sprain patients who have visited Dong-Seo Oriental medical Hospital from May 1, 2002 to September 30, 2002. We have treated 30 cases of them by Dong-si acupuncture therapy and the other 30 cases by General acupuncture therapy. And we have compared those two group. Results : 1. There was no significant difference at the treatment period and the number of treatment times in comparing two groups. 2. The number of treatment times for good effect is that : Dong-si took $1.57{\pm}0.85$ times and General acupuncture therapy took $2.15{\pm}0.96$ times. And we have found that the effect of Dong-si acupuncture therapy is faster than the other.

실용음악 전공 학생들의 발성치료 전후 성대 및 음성 특성 비교

황연신,심미란,김철준,최용석,김상연,최찬호,선동일,Hwang, Yeon Shin,Shim, Mi Ran,Kim, Chul Jun,Choi, Yong Suk,Kim, Sang Yeon,Choi, Chan Ho,Sun, Dong Il 대한후두음성언어의학회 2016 대한후두음성언어의학회지 Vol.27 No.2

Background and Objectives : Many students major in applied music singing have various difficulties in phonation when they sing or perform. But the studies about this cause are lack. The purpose of this study is whether singing voice therapy based on vocal music is effective or not to applied music singing students that have difficulties in phonation. Materials and Methods : Singing voice therapy program had been done to 8 students major in applied music singing during 7 weeks. We did laryngeal stroboscope, perceptual, acoustic and aerodynamic examination before and after singing voice therapy to this students. And we studied post examination results have differences or improvements compared to pre examination results. Results : Four male students don't have effective improvement after singing voice therapy but they shows slight improvement in aerodynamic examination values compared to pre examination values. Four female students shows improvement in aerodynamic examination values and pitch range increasing. Above all, one student's vocal nodules disappeared after singing voice therapy. Conclusion : Singing voice therapy based on music singing is very effective to the students major in applied music singing. Above all, their curriculum in applied music singing should include phonation training based on music singing before training perform and technic practices.

저체중 또는 과체중 청소년에서 캠프 프로그램을 이용한 영양 교육효과에 관한 연구

성미경,승정자,류화춘,박재년,박동연,최미경,조경옥,최선혜,이윤신,김유경,이은주 대한지역사회영양학회 2003 대한지역사회영양학회지 Vol.8 No.4

This study was performed to evaluate the effectiveness of a nutrition education program developed for nutritionally imbalanced adolescents. A summer nutrition camp was held for 23 overweight and 16 underweight subjects. Its effectiveness with regard to was evaluated at the end of the camp and 6 months later. Nutrition knowledge, nutritional attitude, food behavior, nutrient intake, exercise habit and ideal body figures desired by the subjects. The results showed significantly higher nutrition knowledge scores at the end of the camp as compared to those obtained prior to the camp program, and these scores were maintained for at least six months. Nutrition attitude scores also improved after the education program, and these improved scores also lasted for 6 months. However, the food behavior scores measured 6 months after the education program were not significantly different from those obtained prior to the camp. Also, the exercise habit, the ideal body figures and the body figures desired by the subjects remained unchanged. When nutrient intakes of subjects were assessed before the program and 6 months later, the mean daily vitamin C intake was significantly increased after the education program. Also, the intake of iron from plant food sources increased in the overweight subjects, while less iron from animal source were consumed by the underweight subjects. Both groups tended to consume more vegetables and fruits 6 months after the education program which may have contribute to the higher vitamin C and plant-based iron intakes. These results indicate that a 4-day nutrition education camp program sustained changes in nutrition knowledge and nutrition attitude for 6 months. The increased intake of vegetables and fruits was also achieved through this education program. However, changes in dietary behavior in adolescents may require repeated education.

Improvement of interlaminar properties of carbon fiber‑reinforced epoxy composites using aluminum trihydroxide

Dong‑Jun Kwon,Sung‑Min Park,Il‑Jun Kwon,Joung‑Man Park,Euigyung Jeong 한국탄소학회 2019 Carbon Letters Vol.29 No.2

This study provides an economical and effective method to improve the interlaminar properties of carbon fiber-reinforced polymers (CFRPs) using aluminum trihydroxide (ATH) microparticles. ATH microparticles are cheap and are expected to show good affinity to epoxies in the matrix and sizing agents of the carbon fibers owing to the presence of three hydroxyl groups. In addition, ATH particles are reported to improve the mechanical properties of polymers when used as the reinforcement. In this study, ATH microparticles of various sizes, 1.5, 10, and 20 μm, were used to improve the interlaminar properties of the CFRPs. ATH particles with a size of 1.5 μm improved the tensile properties of the ATH/epoxy resin and did not significantly alter the curing behavior. The interfacial adhesion between the carbon fiber and the epoxy resin was also improved, and the impregnation of the resin mixture remained similar to that of the neat resin, resulting in no significant void and defect formation. Considering the above results, the resulting 1.5 μm ATH-reinforced CFRP showed improved interlaminar properties compared to CFRP without ATH. However, 10 and 20 μm ATH-reinforced CFRPs showed deteriorated interlaminar properties due to the diminished tensile properties of the resin itself and resin impregnation, which resulted in more voids and defects, despite the interfacial adhesion between the fiber and the matrix resin.

헬름홀츠 코일을 이용한 강자성체의 와전류검사

성제중,서동만,신용훈,엄태건,서동섭 한국비파괴검사학회 2003 학술대회 논문집 Vol.- No.1

Ferromagnetic material like the steel tubes can easily distort eddy current testing signal due to increased magnetic permeability for defects. Because magnetic field of the test probe is affected in an inconsistent way when the material under the testing has permeability. This permeability effect can be reduced by magnetic saturation. In this paper eddy current testing system was developed to detect flaws on the steel tubes. Magnetic saturation probe with helmholtz coil was designed for saturation and inspection of the steel tubes. When using the designed test probe, the relationship between flaw signals and noises was obviously discriminated. Additionally, a high pass filter was included in the eddy current board to minimize noises due to DC magnetic field.

Lightweight Printed Dipole Antenna Array With 3×2 Beamforming Network for Wide UAV Communication Coverage

Dong‑Geun Seo,Jeong‑Soo Park,Gun ‑Ki Lee,Wang‑Sang Lee 대한전기학회 2020 Journal of Electrical Engineering & Technology Vol.15 No.4

In this paper, a lightweight printed dipole antenna array with 3×2 beamforming network for wide unmanned aerial vehicle (UAV) communication coverage is presented. The proposed antenna consists of an upper substrate, a lower substrate, and two supports with a microstrip feeding. The upper substrate has a two-element printed dipole antenna array, and the lower substrate includes a beamforming feeding circuit and a ground plane as a refector of the proposed antenna array for gain improvement. For wide beam coverage, the proposed feeding network consists of three RF switches, one Wilkinson power divider, and one 90° hybrid coupler, and generates the wide beam using one broadside beam and two end-fre beams. Measured impedance bandwidth, peak gain, and half-power beamwidth (HPBW) of the proposed array operated from 5.03 to 5.15 GHz are approximately 2 GHz, 4.3 dBi, and 155°, respectively.

3-Acetamidophenyl Acetate의 Fries Rearrangement 반응 연구

김동현, 만노즈 마니캄, 풀라레디 보꾸, 이상윤, 조정석, 정상헌 충남대학교 약학대학 의약품개발연구소 2017 藥學論文集 Vol.32 No.-

Fries rearrangement has been known as highly useful reaction for the synthesis of ortho-or para-hydroxyacylbenzene from phenyl ester in the presence of Lewis acid catalyst. Conventionally, aluminum chloride was used as catalyst. For obtaining N-(4-acetyl-3-hydroxyphenyl)acetamide, 3-acetamidophenyl acetate was subjected to Fries Rearrangement reaction using aluminum chloride. Although the desired N-( 4-acetyl-3-hydroxyphenyl)acetamide was obtained, yield was very low. In addition, regioisomer N-(2-acetyl-5-hydroxyphenyl)acetamide and unexpected N-(2-methyl-4-oxo-4H-chromen-7-yl) acet-amide were obtained. NMR study and conversion to known compollnds confirmed the substitlltion pattern of these phenylacetamides and the structure of chromen-4-ones. Under this Fries Rearrangement condition, formation of chromen-4-one was newly discovered.

라인케 부종의 수술 전후 음성분석

김동영,성원진,황찬호,이상준,고태용,전상준,김광현,성명훈 대한이비인후과학회 1999 대한이비인후과학회지 두경부외과학 Vol.42 No.9