물 전해에서 초음파에 의한 과전압 저감에 관한 연구

宋旼根,孫承佑,朱恩選 경상대학교 생산기술연구소 2002 工學硏究院論文集 Vol.2 No.-

The production of hydrogen fuel depends basically on the water electrolysis. The study on the overpotential which activates the hydrogen production is the core to elevate the hydrogen production efficiency on the principle. Characteristics according to the macroscopic effects of the ultrasonic are extracted to elevate the hydrogen production efficiency through measuring the hydrogen production quantity by using the electrolytic cell of the Hoffmann manner. For the above, several devices for measuring by new ideas are developed and applied. Characteristics on the overpotential decrease and the Debye phenomena are observed through the micro reaction by ultrasonic in electrolytic cell. For the above, the electrochemical analyzer, i.e., BAS is applied. Experiments with ultrasonic forcing into 4 kinds of solution such as city water, city water plus nitrogen, distilled water, and distilled water plus nitrogen are carried out. Various methods of ultrasonic forcing such as the improving method, the direct vibrating method, the indirect vibrating method, and etc., are applied as the transmissible method of ultrasonic force. The data base is constructed to design a new ultrasonic modern electrolyzer by using all the above data.

복어중독에 의한 가사 상태에서 소생한 1예

송승찬,신진호,강석우,박경남,최호순,박근태,문희식,기춘석,이성희,윤병철,노우균,조균석,이민호 大韓應急醫學會 1998 대한응급의학회지 Vol.9 No.3

Tetrodotoxin is a neurotoxin produced by about 90 species of puffer fish and causes paralysis of central nervous system and peripheral nerves by blocking the movement of all monovalent cation. Ingestion of tetrodotoxin produces clinical manifestations such as paresthesias(within 10-45 min), vomiting, lightheadedness, salivation, muscle twitching, dysphagia, difficulty in speaking, convulsion and death that expressed by cardiopulmonary arrest with loss of brain stem reflex sometimes. Tetrodotoxin prevents or delays ischemia induced neuronal death by way of following 3 mechanisms. Firstly, it reduces the energy demand of the brain tissues. Secondly, it delays or even prevents anoxic depolarization. Finally, it deminishes ischemia induced cell swelling and cerebral edema. We report a case of puffer fish poisoning which presented with cardiopulmonary arrest and loss of brain stem reflex, but completely recovered by aggressive cardiopulmonary resuscitation.

물 전해에서 압력 Sensor System을 이용한 초음파 영향에 관한 연구

孫承佑,宋旼根,朱恩選 경상대학교 생산기술연구소 2002 工學硏究院論文集 Vol.2 No.-

The production of hydrogen fuel depends basically on the water electrolysis. The ultrasonic effects the decrease of the overpotential in a water electrolysis. The study on the overpotential which activates the hydrogen production is the core to elevate the hydrogen production efficiency on the principle. A pressure sensor system by new ideas is developed and applied. Solutions are 4 kinds of KOH concentration such as 0%, 10%, 20%, and 30%. Two frequency bands of the ultrasonic transducer are 28㎑ and 2㎑. Characteristics of hydrogen production quantity according to the change of temperature with ultrasonic forcing are investigated and examined.

TDI계 수분산성 폴리우레탄 접착제의 특성에 Diisocyanate의 구조가 미치는 영향

강승구,송봉근,이재흥,박찬조,류해일 한국공업화학회 2003 공업화학 Vol.14 No.3

수년 전부터 많은 연구자들에 의해 폴리우레탄의 수용화, 수분산화의 연구가 수행되어 왔다. 그럼에도 불구하고 폴리우레탄의 특성에 디이소시아네이트가 구조에 미치는 영향에 대한 연구는 많이 진행되지 않았고 또한 미흡한 상태이다. 따라서 번 연구에서는 디이소시아네이트의 형태와 함량 변화에 따른 폴리우레탄의 특성을 연구하였다. 폴리우레1탄 수분산체(PUD)는 poly(tetramethylent ether) glycol (PTMG), isophorone diisocyanate (IPDI), toluene 2,4-diisocyanate (TDI), dimethylol propionic acid (DMPA), trethylamine (TEA) 등을 사용하여 제조하였다. 제조한 폴리우레탄 수분산체(PUD)의 구조를 FT-IR을 이용하여 확인하였다. 폴리우레탄 수분산체의 특성은 DSC, gel permeation chromatography (GPC), particle analyzer, universal testing machine (UTM) 등을 사용하여 측정하였다. 폴리우레탄 수분산체(PHD)에서 입자크기는 IPDI 함량이 증가할수록 작아지는 경향을 나타내었으며, 유리전이온도(Tg)는 IPDI 함량이 증가할수록 조금씩 낮아지는 경향을 나타내었다. 또한, 폴리우레탄 수분산체(PUD)의 접착세기 변화에서는 [NCO]/[OH] 몰비를 1.2로 유지되도록 하면서 합성에 관여하는 [NCO] 양에 해당하는 [TDI]/[IPDI] 몰비를 변화시켜 얻은 폴리우레탄 수분산체의 접착세기는 [TDI][IPDI] 몰비가 50/50일때 좋은 집착세기를 나타내었다. 또한 [NCO]/[OH] 몰비를 1.6으로 일정하게 유지되도록 하고 [TDI]/[IPDI] 몰비를 변화시켜 얻은 폴리우레탄 수분산체의 접착세기는 [TDI]/[IPDI] 몰비가 75/25일 때 좋은 접착세기를 나타내었다. Aqueous polyurethane dispersions (PUD) has been investigated by many researchers for a long time. However, relatively little systematic work has been reported, in detail, on the effect of structure of the diisocyanate on the properties of polyurethane. This work describes the properties of polyurethane in relation to the variation of diisocyanate type and contents. Aqueous polyurethane dispersions (PUD) were prepared from the poly(tetramethylene ether) glycol (PTMG), toluene 2,4-diisocyanate (TDI), isophorone diisocyanate (IPDI), dimethyol propionic acid (DMPA), and triethylamine (TEA). Differential scanning calorimetry (DSC), FT-IR, GPC, universal testing machine (UTM), and particle analyzer were utilized to characterize the physical and mechanical properties of PUD according to diisocyanate type and contents. As the content of IPDI in PUD increased, the particle size decreased. The glass transition temperatures (Tg) of PUT were shifted to a lower temperature as IPDI conent increased. When [NCO]/[OH] mole ratio was 1.2, the adhesion force of PUD shown the best result at [TDI]/[IPDI] mole ratio of 50/50. And, at [NCO]/[OH] mole ratio of 1.2, the adhesion force of PUD was the best when [TDIl/[IPDI] mole ratio was 75/25.

PIV계측에 의한 충돌제트에서 사각 난류촉진체 주변의 유동특성 연구

李相範,孫承佑,宋旼根,朱恩選 경상대학교 생산기술연구소 2001 工學硏究院論文集 Vol.1 No.-

The objective of this study is to investigate characteristics of flow by the square turbulence promoter and the selection of a proper impinging distance. The promoter was set up vertically to the way of a nozzle exit flow, each pitch fixed to be 30㎜ and the measurement region divided by 4 section(A, B, C, D). The characteristics of flow field were investigated in each case of the distance rate from the nozzle exit to impinging plate(H/B=4, 6, 8, 10) changing nozzle exit diameter(Ψ10, 17, 23) and Re=4,000. As the experimental result by using PIV measurement at Ψ17 and H/B=6 in the free jet, the turbulence intensity showed a big strength at A section, a decreasing of 20.1% at B section, an increasing of 10% at C section and an increasing of 10.9% at D section. On the other side, when the square turbulent promoter set up, The flow showed a tendency with the free jet at A section, a decreasing of 16.2% at B section, a decreasing of 1.5% at C section and an increasing of 8.3% at D section, It has been shown that for enhancing the turbulence intensity are the case of Ψ17 and H/B=8 in the B section is the propel condition.

입원 환자 영양검색 전산 프로그램 개발

안수미,윤기영,신연명,최경현,임근승,장문경,송윤미,공은희 고신대학교의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.2

Background : About 30% of patients in the hospital are under nourishment. A large portion of people are undernourished when they are admitted to the hospital and in the majority of these, undernutrition develops further while in hospital. Patient-Generated subjective global assessment(PG-SGA), a method of nutritional assessment based on clinical judgment, has been widely used to assess the nutritional status of adults for both clinical and research purposes. Modified PG-SGA can be used as a nutrition screening tool, and a comprehensive nutrition assessment is desirable for those who are malnourished. The purpose of this study is to develop a simple, reliable and valid nutrition screening program(NSP). Methods : We applied the nutrition screening program(NSP) to adult inpatients who are at risk of malnutrition using the Modified Patient-Generated subjective global assessment(PG-SGA) and objective assessment(electrical medical record data). Results : Therefore simple and beneficial NSP is developed for patients with severe malnutrition. Using NSP. nutritional information of the severe malnutrition patient should be shared with the physicians and they should be taken care of by clinical dietitians to improve their nutritional status. Conclusion : The Modified PG-SGA and nutrition screening tool are simple, reliable and valid nutrition screening program(NSP).

Changes in Physical and Chemical Properties of Coir Used as the Bag Culture Substrate of Greenhouse Tomatoes for Three Years

Seung-Geun Song,Kyo-seok Lee,Dong-Sung Lee,Ja-Hyun Rhie,Byeong-Deok Hong,Hui-Su Bae,Il-Hwan Seo,Doug-Young Chung 한국토양비료학회 2016 한국토양비료학회지 Vol.49 No.5

To identify causes for drastic decrease in yield of tomato with repeated culturing number of the bag culture substrate of greenhouse tomatoes we investigated the physical and chemical properties of a coir used as the bag culture substrate to grow tomato at the Booyeo tomato experimental institute located in Booyeo, Chungnam Province for three years from 2012 to 2014. The results showed that total porosity ranged from 65.4 to 73.1% for the bulk densities of coir ranging from 0.12 to 0.14 g cm<SUP>-3</SUP>. The volumetric water contents measured at 0.01 bar as air entry point were 25% (before), 33% (1<SUP>st</SUP> yr), 45% (2<SUP>nd</SUP> yr), and 37% (3<SUP>rd</SUP> yr). Organic matter contents ranged from 82.0 to 96.2% (highest in 1<SUP>st</SUP> yr). pH and EC ranged from 4.47 to 6.47 (highest in 2<SUP>nd</SUP> yr), and from 22.2 to 53.5 dS m<SUP>-1</SUP> (highest in 1<SUP>st</SUP> yr) and cation exchange capacity ranged from 71.0 to 191.7 cmol kg<SUP>-1</SUP>(highest in 3<SUP>rd</SUP> yr). The surface structure observed with electrical microscope showed that the number of large pores decreased with increasing cultivating time while the proportion of smaller pores increased, indicating that the coir was consistently decomposed. Therefore, we could conclude that these changes of all physical and chemical properties of the coir may influence the holding capacities of water and nutrients, resulting in deterioration of quality of culture substrate of greenhouse tomatoes.

Anaplastic large cell(Ki-1) lymphoma : A case report 1예 보고

Song,Hyung Geun,Kim,Seung Taik,Song,Young Jin,Lee,Ok-Jun 충북대학교 의과대학 충북대학교 의학연구소 1998 忠北醫大學術誌 Vol.8 No.1

역행성 대세포성 림프종은 CD30(Ki-1) 항원을 발현하며, 조직학적으로는 크고 다형성이 심한 핵을 갖는 종양세포가 주로 림프절의 피막하 또는 동양구조내 침윤양상을 보인다. 이러한 조직학적 특징 때문에 비호즈킨 림프종, 호즈킨병과 전이성 암종등과의 감별이 중요하다. 최근 염색체 2번과 5번의 전위에의해 만들어진 합성단백, p80NPM/ALK의 발현이 역행성 대세포성 림프종의 발생기전에 중요한 역할을 한다고 보고되고 있으며, 이 합성단백의 발현과 환자 예후와의 관계가 규명되어지고 있다. 오른쪽 액와 종괴로 내원한 59세 여자환자에서 역행성 대세포성 림프종을 경험하였기에 보고하는 바이다. We report pathological, immunohistochemical and clinical features of a case of anaplastic large cell lymphoma (ALCL) that was initially diagnosed as metastatic carcinoma. ALCL originally was defined by expression of CD30 (Ki-1) and composed of large, frequently bizzare, cells of T or null cell phenotype that show a preferential sinusoidal growth pattern. Because of these features, various diagnoses are initially considered as Non-Hodgkin's lymphoma(NHL), Hodgkin's disease (HD) and metastatic carcinoma etc. The p80NPM/ALK expression activated by the t(2;5)(p23;q35) translocation recently has been shown to play an important role in the pathogenesis of ALCL.

제3차 대한간학회 춘계학술대회 초록집 : 쥐의 간절편을 이용하여 t-butylhydroperoxide로 유발한 지질 과산화 및 세포 독성에 대한 Ca2+ 통로차단제, 세포 외부 칼슘 이온 농도와 phospholipase A2 저해제의 효과

송철수 ( Song Cheol Su ),허정 ( Heo Jeong ),김광하 ( Kim Gwang Ha ),박승근 ( Park Seung Geun ),송근암 ( Song Geun Am ),조몽 ( Jo Mong ),양웅석 ( Yang Ung Seog ),문한규 ( Mun Han Gyu ) 대한간학회 1997 Clinical and Molecular Hepatology(대한간학회지) Vol.3 No.2(S)

Evaluation of p16INk4a, pRb, p53 and Ki-67 expression in cervical squamous neoplasia

Hyung Geun Song, Seung-Myoung Son, Kwon-Il Noh, Ho-Chang Lee, Yeon-Jin Park, Eun-Hwan Jeong, Hak-Soon Kim 충북대학교 동물의학연구소 2012 Journal of Biomedical and Translational Research Vol.13 No.3

The previous studies of p16INK4a, pRb, p53, and Ki- 67 expression suggested that these markers may be preferentially expressed in cervical neoplasms. The purpose of this study was to assess the expression and the clinical significance of p16INK4a, pRb, p53, and Ki-67 proteins in cervical lesions. We obtained 106 cases with various categories of cervical squamous mucosa, including squamous cell carcinoma (n=35), cervical intraepithelial neoplasia (CIN) II/III (n=26), CIN I (n=10), squamous metaplasia (n=15), and normal squamous mucosa (n=20). Immunohistochemical staining was performed for p16INK4a, pRb, p53, and Ki-67 proteins in formalin-fixed and paraffinembedded tissue sections of the uterine cervix. Evaluation of immunohistochemical staining was based on the frequencies of expression and the mean immunoreactivity scores (IS) in each diagnostic category. p16INK4a positive sotaining was observed in 26 of 35 cases (74.3%) of squamous cell carcinoma, in 16 of 26 cases (61.5%) of CIN II/III, in six of 10 cases (60%) of CIN I, in nine of 15 cases (60%) of squamous metaplasia, and negative in normal squamous mucosa. pRb expression was detected in all diagnostic categories; however, the proportion of pRb positive cells was relatively decreased in CIN II/III (38.5%) and squamous cell carcinomas (51.4%), compared to normal squamous epithelium (90%) and squamous metaplasia (73.3%). No significant differences in expression of p53 were observed in any diagnostic categories. Ki-67 expression was increased in squamous cell carcinoma (37.1%), CIN II/ III (42.3%), and CIN I (40%), but negative in squamous metaplasia and normal mucosa. In 35 cases of squamous cell carcinomas, multivariate analysis revealed no differences in p16INK4a, pRb, p53, and Ki-67 expression according to the age of the patient, lymph node metastasis and clinical stage. In conclusion, the combined use of p16INK4a and Ki-67immunoreactivity could improve the diagnostic specificity of squamous cell carcinoma of the uterine cervix.