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HWANG, IN SIK,KIM, JI EUN,LEE, YOUNG JU,KWAK, MUN HWA,LEE, HONG GU,KIM, HYE SUNG,LEE, HEE SEOB,HWANG, DAE YOUN Spandidos Publications 2014 MOLECULAR MEDICINE REPORTS Vol.9 No.1
Cheonggukjang (CKJ), a fermented soybean product, has been reported to have beneficial effects on various chronic diseases, including cardiovascular disease, cancer and immune diseases. To investigate whether CKJ induces growth sensitivity in mammals, alterations of key parameters related to their growth were analyzed. Sprague-Dawley (SD) rats were treated with a high concentration of CKJ (H-CKJ) or a low concentration of CKJ (L-CKJ) for 10 days, and compared with vehicle-treated rats. The CKJ contained a high concentration of total flavonoids, phenolic compounds, daidzein and genistein, compared with the non-fermented soybean product. Body weight was higher in the H-CKJ-treated group compared with that in the vehicle- and L-CKJ-treated groups, whereas the weights of three organs (the brain, liver and kidney) were higher in the L-CKJ-treated group compared with the remaining two groups. However, no significant differences in femur length and weight were detected between the CKJ- and vehicle-treated groups. The thickness of the epiphyseal growth plate in proximal femoral epiphysis was broadest in the H-CKJ-treated group compared with the vehicle- and L-CKJ-treated groups. Furthermore, the level of growth hormone (GH) was highest in the serum of the L-CKJ-treated group, although that of the H-CKJ-treated group was lower compared with that in the L-CKJ group. Moreover, the expression levels of the GH receptor increased in the liver tissue, but not in the muscle tissue, of the L-CKJ- and H-CKJ-treated groups. In the downstream signaling pathway of the GH receptor, the phosphorylation levels of Akt and Erk were differentially regulated between the liver and muscle. These results suggest that CKJ extract may enhance the sensitivity of the femur, liver and muscle epiphyseal growth plate in SD rats, through the upregulation of GH secretion.
김형섭,정인과,곽동일 大韓神經精神醫學會 1988 신경정신의학 Vol.27 No.6
This study is to investigate the clinical characteristics of the religious delusion or hallucination. Subjects are consisted of 18 males and 39 females, total 57 patients with the religious delusions or hallucinations and they are compared with 51 patients(24 males and 27 females) with nonreligious delusions or hallucinations. The results of this study are as follows : 1) As to the sex of the subjects, female outnumbered male by 2.2: 1 in the study group. 2) The educational level is high school or above in both sexes. 3) As to the marital status of the religious delusion or hallucination group, there was more singes in male than in female(P<0.05). 4) The most common diagnosis was bipolar affective disorder, manic type in the study group. 5) The most prominent hallucination type was the auditory hallucination. Significantly higher number of the religious delusion or hallucination group was associated with more than two kinds or hallucination(P<0.05). 6) There was significantly more behievers in the religious delusion or hallucination group(P<0.001), than control group. 7) The most common kind of the religion was christian in both group. 8) the main motive to have the religion was due to familial faith or friend’s advice. 9) Religious delusion or hallucination group utilized more religious or faith hedling type of treatment methods before the hospitalization(P<0.001). 10) The most common psychosocial stressor as a major precipitating factor was social adaptation problems in males and familial problems in females. 11) As to the concept of the mental illness in the family members, the supernatural concept was more frequently associated with religious delusion or hallucination group(P<0.01).
Sun-Il Choi,Ji-Eun Kim,In-Sik Hwang,Hye-Ryun Lee,Young-Ju Lee,Moon-Hwa Kwak,Hong-Joo Son,Hee-Seob Lee,Jong-Sub Lee,Byeong-Cheol Kang,Dae-Youn Hwang 한국실험동물학회 2012 Laboratory Animal Research Vol.28 No.4
Red Liriope platyphylla (RLP) produced by steaming process has been reported to enhance the secretion of insulin and nerve growth factor (NGF). However, there has been no report on the toxicity of RLP in the specific organs of mice. To investigate the toxic effect of RLP, we tried to observe a significant alteration on body weight, food/water intake, organ weight, liver pathology and kidney pathology in female ICR mice received 12.5, 25.0 and 50.0 mg/kg body weight/day of RLP via gavage for 10 days. Out of seven organs including brain, heart, lung, liver, kidney, spleen and ovary, two organs (heart and lung) showed significantly decreased weights in the medium dosage RLP-treated group, whereas weights of other organs were maintained at constant levels in all dosage groups. In the liver toxicity analysis, no significant increase of alkaline phosphatase (ALP), alanine aminotransferase (ALT), and aspartate amino-transferase (AST) were detected in any RLP-treated group compared to vehicle-treated group. The specific pathological changes induced by most of toxic compounds were not observed in the liver in microscopic examination. Furthermore, in the kidney toxicological analysis, a significant enhancement of the blood urea nitrogen (BUN) concentration was detected in the high dosage RLP-treated group compared to the vehicle-treated group. However, the serum creatinine (CA) concentration on the serum biochemistry as well as the pathological changes in microscopic examination were not significantly different between the vehicle- and RLP-treated groups. Therefore, these results suggest that RLP does not induce any specific toxicity in liver or kidney tissues of mice, although the BUN level slightly increased in 50.0 mg/kg of RLPtreated group.
single phase-vanadium dioxide 박막을 이용한 온도센서에 관한 연구
김지홍(Ji-hong Kim),홍성민(Sung-min Hong),곽연화(Yeon-hwa Kwak),박순섭(Soon-seob Park),황학인(Hak-in Hwang),문병무(Byung-moo Moon) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.10
In bio applications, high temperature coefficient of resistance (TCR) at 30℃~40℃ is especially important for a temperature sensor. In this work, single phase-vanadium dioxide (VO₂) thin films for temperature sensor were fabricated by reactive DC magnetron sputtering and post-annealing method. VO<SUB>x</SUB> thin films deposited by reactive sputtering in a controlled Ar/O₂ atmosphere can be transformed into single phase-VO₂ films by post-annealing in N₂ atmosphere. The grown VO₂ thin films have a moderate resistance at room temperature and very high TCR at room temperature and transition temperature, respectively 2.88%/K and 15.8%/K. A detailed structural characterization is performed by SEM, XRD and RBS. SEM morphology image indicates that grains of fabricated VO₂ films are homogeneous and ball-like in shape. A fact that the films contain only single phase-VO, is obtained by XRD and RBS analysis. After deposition, the sensors were fabricated by micromachining technology. Silicon nitride membrane and black nickel were used for a thermal isolation structure and absorption layer. In the vicinity of room temperature, the TCR of sensors was enough high to apply for bio sensors.
이정인(Jung-In Lee),곽재섭(Jae-Seob Kwak),하경호(Kyoung-Ho Ha) 한국기계가공학회 2008 한국기계가공학회 춘추계학술대회 논문집 Vol.2008 No.-
In this study, the magnetic density flux was predicted using simulation program. As a result, the magnetic density flux was lower at the center of pole on inductor than outside. It had same result on the experimental verification. And magnetic force was lower according to increase of working gap. So, to improve the magnetic force, permanent magnet was installed under the workpiece. In that case, the magnetic density flux not only at center but also at outside of pole was increased. Therefore, the efficiency of magnetic abrasive polishing was also increased.
In Seob Kwak,Yeoung-Sang Yun,원성욱,Sun Beom Choi,Juan Mao,김석,정봉우,윤영상 한국화학공학회 2011 Korean Journal of Chemical Engineering Vol.28 No.3
The removal and recovery of nickel(II) from wastewater of an electroplating factory was investigated using the waste Escherichia coli biomass as the biosorbent. The results were compared with those from using Amberlite IRN-150 as a commercial sorbent resin. The resin showed better performance with a qmax value of 30.48 mg/g compared to 26.45 mg/g for the biomass, as predicted by the Langmuir isotherm model. Kinetic experiments revealed that the biosorption equilibrium was attained within 15 min. In the recycling of the sorbents, the desorption of nickel(II) from Amberlite was only 50%, which is too low for the adsorption performance of the resin to be maintained at an economic level in subsequent cycles. In contrast, the biomass exhibited reasonable adsorption-desorption performance over three repeated cycles. The capability for repeated use of the sorbent over several cycles and for recovery of the metal ions is the main advantage of the waste biomass.
이정인,김상오,곽재섭,Lee, Jung-In,Kim, Sang-Oh,Kwak, Jae-Seob 한국금형공학회 2008 한국금형공학회지 Vol.2 No.6
In order to satisfy the customer's variant needs for a product quality in recent years, a demand for developing higher precision machining technologies in a lot of application areas such as automobile, cellular phone and semiconductor has been increased more and more. Micro-magnetic induced polishing(${\mu}-MIP$) process is one of these precision technologies. In this study, to verify the parameters' effect of the ${\mu}-MIP$ process on the surface roughness improvement of the inclined workpiece, well planned experiment which was called the design of experiments was carried out. Considered parameters were spindle speed, inductor current, abrasive configuration and working gap between the workpiece and the solid tool. As a result, it was seen that the inductor current and the working gap greatly affected the surface roughness improvement. And to predict the surface roughness of the inclined workpiece, S/N ratio and first-order response surface model was developed.
다양한 당-아미노산 Model system에서의 Maillard Browning 반응 생성물의 항산화 효과
곽인섭 ( In Seob Kwak ),김현종 ( Hyun Jong Kim ),오승배 ( Seung Bae Oh ),정봉우 ( Bong Woo Chung ),장광엽 ( Kwang Yeop Jahng ) 전북대학교 공학연구원 (구 전북대학교 공업기술연구소) 2005 工學硏究 Vol.36 No.-
This study was conducted to observe the effect of various kinds of sugars (galactose, fructose, glucose, lactose, and sucrose) and amino acids (glycine, β-alanine, L-valine, L-tyrosin, L-aspartic acid, and L-glutamic acid ) on the Maillard reaction. Model systems were prepared at 0.1 M concentration and heated at 90 ℃ for 2 hour. The raction was evaluated by absorbance at 420 nm for browning and 517 nm for DPPH radical-scavenging activity. Model systems(1) derived from galactose showed a greater increase in browning intensity than others. The reactivity of reducing sugar and amino acid was increased in the following order: galactose > fructose > glucose > lactose > sucrose, Glycine > β-alanine > L-valine > L-tryrosin > L-aspartic acid > L-glutamic acid. The pH of Model systems(2) decreased gradually as the heating time increased up to 180 min. Melanoidin Model systems(2) derived from galactose showed the highest radical-scavenging activity. DPPH radical-scavenging activity of melanoidins increased as the heating time increased.