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Journal of Environmental Sciences 2006年第1期18卷 193-200页

作者： Jae-Wook Lee Tae-Ouk Kwon Ramesh Thiruvenkatachari Il-Shik Moon Department of Chemistry Engineer Seonam University Namwon 590-711 Korea Department of Chemistry Engineer Sunchon National University Suncheon 540-742 Korea

This study evaluates the adsorption ability ofbisphenol A（BPA） on titanium dioxide（TiO2） and its effect on the photocatalysis by advanced oxidation process using UV radiation and TiO2 photocatalyst. Degradation of BPA was also evaluated for the system without adsorption prior to photocatalytic reaction. The separation of TiO2 from BPA solution treated by pilot-scale photocatalytic reactor （capacity 0.16 m^3） was studied using submerged ultrafiltration （UF） membrane. It was found that although adsorption capacity of BPA was not high, adsorption played an important role in improving the efficiency ofphotocatalysis. On the other hand, during the separation of TiO2 particles from aqueous suspension, the permeate flux of the membrane was strongly affected by transmembrane pressure and TiO2 dose. The permeate turbidity was decreased below 1 NTU.

关键词： bisphenol A TiO2 adsorption membrane photocatalysis

Effect of precursor thermal history on the formation of amorphous and crystalline calcium carbonate

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Particuology 2017年第4期15卷 29-34页

作者： Jitendra Pal Singh Mi-Jung Ji Cheol-Hwee Shim Sang Ok Kim Keun Hwa Chae Advanced Analysis Center Korea Institute of Science and Technology Seou102792 Republic of Korea Department of Biomedical Engineering Seonam University Namwon 55724 Republic of Korea

The role of the thermal history of the precursor was studied for amorphous and crystalline calcium carbon- ate phases synthesized from calcium nitrate. The X-ray diffraction patterns of these phases are influenced by their annealing temperature of 0, 300, 400, and 500 ℃. However, the effect of the precursor thermal history on the X-ray diffraction pattern of the resulting calcium carbonate phase is negligible. Transmis- sion electron microscopy indicates that materials annealed at 400 ℃ consist of amorphous aggregates, irrespective of the precursor thermal history. The crystallite size of crystalline calcium carbonate is influ- enced by the precursor thermal history, and ranges from 23 to 26 rim. Near-edge X-ray absorption fine structure measurements indicate that the annealing temperature plays an important role in determining the local electronic structure. The role of the thermal history of the precursor is also important for the resultinu electronic structure.

关键词： Amorphous material Particles Electron microscopy X-ray techniques NEXAFS Calcium carbonate

Increased intestinal macromolecular permeability and urine nitrite excretion associated with liver cirrhosis with ascites

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World Journal of Gastroenterology 2008年第24期14卷 3884-3890页

作者： Soong Lee Seung-Cheol Son Moon-Jong Han Woo-Jin Kim Soo-Hyun Kim Hye-Ran Kim Woo-Kyu Jeon Ki-Hong Park Myung-Geun Shin Department of Internal Medicine College of MedicineSeonam University and Seonam University Hospital Department of Laboratory Medicine Chonnam National University Medical School and Chonnam National University Hwasun Hospital Brain Korea 21 Project Center for Biomedical Human Resources at Chonnam National University Medical School Department of Internal Medicine Kangbuk Samsung HospitalSungkyunkwan University School of Medicine Korea Polymer Testing & Research Institute Ltd.

AIM： To determine intestinal permeability, the serum tumor necrosis factor （TNF）-α level and urine nitric oxide （NO） metabolites are altered in liver cirrhosis （LC） with or without ascites. METHODS： Fifty-three patients with LC and 26 healthy control subjects were enrolled in the study. The intestinal permeability value is expressed as the percentage of polyethylene glycol （PEG） 400 and 3350 retrieval in 8-h urine samples as determined by high performance liquid chromatography. Serum TNF-α concentrations and urine NO metabolites were determined using an enzyme-linked immunosorbent assay （ELISA） and Greiss reaction method, respectively. RESULTS： The intestinal permeability index wassignificantly higher in patients with LC with ascites than in healthy control subjects or patients with LC without ascites （0.88 ± 0.12 vs 0.52 ± 0.05 or 0.53 ± 0.03, P 〈 0.05） and correlated with urine nitrite excretion （r = 0.98）. Interestingly, the serum TNF-α concentration was significantly higher in LC without ascites than in control subjects or in LC with ascites （198.9 ± 55.8 pg/mL vs 40.9 ± 12.3 pg/mL or 32.1 ± 13.3 pg/mL, P 〈 0.05）. Urine nitrite excretion was significantly higher in LC with ascites than in the control subjects or in LC without ascites（ 1170.9± 28.7 μmol/L vs 903.1 ± 55.1 μmol/L or 956.7 ± 47.7 μmol/L, P 〈 0.05）. COMCLUSIOM： Increased intestinal macromolecular permeability and NO is probably of importance in the pathophysiology and progression of LC with ascites, but the serum TNF-α concentration was not related to LC with ascites.

关键词： Intestinal permeability Tumor necrosisfactor-R Nitric oxide Liver cirrhosis Ascites

Comparison of two Nd:YAG laser posterior capsulotomy: cruciate pattern vs circular pattern with vitreous strand cutting

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International Journal of Ophthalmology(English edition) 2018年第2期11卷 235-239页

作者： Jin-Soo Kim Jung Yeol Choi Ji-Won Kwon Won Ryang Wee Young Keun Han Department of Ophthalmology Seoul National University College of Medicine Department of Ophthalmology Seoul Metropolitan Government-Seoul National University Boramae Medical Center Department of Ophthalmology Seonam University College of Medicine Myongji Hospital

AIM： To investigate the effects and safety of neodymium： yttrium-aluminium-garnet（Nd：YAG） laser posterior capsulotomy with vitreous strand cuttingMETHODS： A total of 40 eyes of 37 patients with symptomatic posterior capsular opacity（PCO） were included in this prospective randomized study and were randomly subjected to either cruciate pattern or round pattern Nd：YAG posterior capsulotomy with vitreous strand cutting（modified round pattern）. The best corrected visual acuity（BCVA）, intraocular pressure（IOP）, refractive error, endothelial cell count（ECC）, anterior segment parameters, including anterior chamber depth（ACD） and anterior chamber angle（ACA） were measured before and 1 mo after the laser posterior capsulotomy. RESULTS： In both groups, the BCVA improved significantly（P〈0.001 for the modified round pattern group, P=0.001 for the cruciate pattern group）; the IOP and ECC did not significantly change. The ACD significantly decreased（P〈0.001 for both） and the ACA significantly increased（P=0.001 for the modified round pattern group and P=0.034 for the cruciate group）. The extent of changes in these parameters was not significantly different between the ***： Modified round pattern Nd：YAG laser posterior capsulotomy is an effective and safe method for the treatment of PCO. This method significantly changes the ACD and ACA, but the change in refraction is not significant. Modified round pattern Nd：YAG laser posterior capsulotomy can be considered a good alternative procedure in patients with symptomatic PCO.

关键词： posterior capsulotomy modified round pattern vitreous strand cutting anterior segment parameter

Unilateral spontaneous lens absorption and dislocation of the empty capsular bag into the anterior chamber

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International Journal of Ophthalmology(English edition) 2017年第1期10卷 161-164页

作者： Bo Hee Kim Deoksun Cha Sunmin Yim Ji-Won Kwon Won Ryang Wee Young Keun Han Department of Ophthalmology Seoul National University College of MedicineSeoul 03080Korea Department of Ophthalmology Seoul Metropolitan Gover-nment Seoul National University Boramae Medical CenterSeou107061Korea Department of Ophthalmology Myongji Hospital Seonam University College of MedicineGoyang 10475Korea

Cases involving spontaneous aphakic change in the visual axis are rare in Outpatient Clinics. However, we can often ascertain the past events affecting the patient＇s eye by examining its current status. The placement of the dislocated internal material of the lens, the remnant lens capsular bag status, lens and zonular status of the contralateral eve.

关键词： Unilateral spontaneous lens absorption and dislocation of the empty capsular bag into the anterior chamber Figure IOL

Evaluation on Feasibility of Sintered Cattle Bone Powder as a Heavy Metal Adsorbent

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Materials Sciences and Applications 2013年第8期4卷 12-17页

作者： Dong-Heui Kwak Mi-Sug Kim Department of Environmental and Chemical Engineering Seonam University Namwon South Korea Korea Urban Regeneration Technology Institute Jeonju South Korea

Quite some bones of cows and pigs are discharged from home and restaurant industry as food wastes after cooking by boiling. This study conducted adsorption experiment of heavy metals using waste bones as an absorbent for recycling the waste bone and evaluated its feasibility. Sintered cattle bone (SCB) was manufactured in powder form after sintering at 550°C - 600°C and pulverizing, and crystal structure examined by XRD was similar to synthetic hydroxyl apatite. Adsorption equilibrium of single component such as Pb, Cd, and Zn was able to be expressed by isotherm equations of Langmuir, Freundlich, and Sips. Among them, Sips isotherm was accorded best. Also, IAST (ideal adsorbed solution theory) was used to predict multi-component adsorption equilibrium and correlation between those predicted values and empirical values was satisfactory. Adsorption affinity on SCB was in order of Pb, Cd, and Zn and it was corresponded with cases of activated carbon or synthetic hydroxyapatite. Finally, this study confirmed feasibility of SCB as an adsorbent of the heavy metal in real field of wastewater treatment.

关键词： Adsorption Cattle Bone Bone Charcoal Heavy Metal Isotherm

Effect of Korea red ginseng on cerebral blood flow and superoxide production

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Acta Pharmacologica Sinica 2002年第12期23卷 99-103页

作者： CukSeong KIM,Jin Bong PARK,Kwang-Jin KIM,Seok Jong CHANG,Sung-Woo RYOO,Byeong Hwa JEON Department of Physiology College of Medicine Chungnam National university Taejon KOREA Department of Physiology College of Medicine Chungnam National university Taejon KOREA Department of Physiology College of Medicine Chungnam National university Taejon KOREA Department of Physiology College of Medicine seonam university Namwon KOREA Division of Genomics ＆ Proteomics Korea Research Institute of Bioscience and Biotechnology(KRIBB) Yusong Taejon Korea Correspondence to Byeong Hwa JEON MD PhD.Department of Physiology College of Medicine Chungnam National university 6 Munhwa-dong Jung-gu Taejon South Korea 301131

AIM: To investigate the effects of Korea red ginseng (KRG) on the cerebral perfusion rate in the rats and the generation of superoxide anion in the endothelial cells. METHODS: The cerebral perfusion rate was measured using laser-doppler flowmetry before and after the administration of crude saponin (CS) and saponin-free fraction (SFF) of KRG in the anesthetized rats. The superoxide generation was measured by the method based on lucigenin-enhanced chemiluminescence in the cultured endothelial cells. RESULTS: The relative cerebral perfusion rate (rCBF) was significantly increased by the intraperitoneal injection of CS (100 mg/kg) in the rats, but SFF had no effect on the rCBF. Chronic treatment with CS for 7 d significantly inhibited the decrease of forebrain cerebral blood flow induced by clamping both carotid arteries in the rats. Furthermore, CS (0.1 g/L) significantly sup-pressed NADPH-induced superoxide generation in the human umbilical vein endothelial cells (P<0.01). CONCLUSION: The present study d

关键词： Korean red ginseng cerebral blood flow superoxides vascular endothelium

Liposarcoma of the Testis and Spermatic Cord

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Open Journal of Urology 2013年第2期3卷 68-70页

作者： Ha Na Lee Min Su Kim Department of Urology Ewha Womans University Medical Center Seoul Seonam Hospital SeoulSouth Korea Department of Urology Seoul Medical Center SeoulSouth Korea

Primary liposarcoma of the spermatic cord is rare, and preoperative diagnosis is difficult. We report a rare case of well-differentiated liposarcoma in 65-year-old man. The patient’s chief complaint was painless enlargement of a mass in the right inguinal area that had persisted for about two months. The main component of the mass was wrapped around the spermatic cord and several components were around the testis. Ultrasonography of the main component showed mixed echogenicity. CT showed an ovoid fat-containing nodule and several other fat-density masses surrounding the testis. The mass was surgically removed, along with the right testis and spermatic cord. A pathological examination showed a well-differentiated liposarcoma of the right spermatic cord and testis.

关键词： Liposarcoma Testis Spermatic Cord

Effect of Korean red ginseng on blood pressure and nitric oxide production

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Acta Pharmacologica Sinica 2000年第12期 40-45页

作者： JEON Byeong Hwa,KIM Cuk Seong,KIM Hoe-Suk,PARK Jin-Bong,NAM Ki Yeul,CHANG Seok Jong Department of Physiology College of Medicine Chungnam National university Taejon Korea Department of Physiology College of Medicine Chungnam National university Taejon Korea Department of Physiology College of Medicine Chungnam National university Taejon Korea Department of Physiology College of Medicine Chungnam National university Taejon Korea Korea Ginseng & Tobacco Research Institute Taejon Korea Department of Physiology College of Medicine seonam university Namwon Korea

AIM: To investigate the effect of crude saponin and non-saponin fraction of Korean red ginseng (KRG) on the blood pressure and nitric oxide (NO) production in the conscious rats and cultured endothelial cell line, ECV 304 cells. METHODS: Systolic blood pressure and heart rate were monitored in the conscious rats. Nitric oxide levels and the expression of nitric oxide synthase were measured by a spectrophotometric assay using Griess reagents and Western blotting, respectively. Nitric-oxide synthase activity was measured based on the conversion rate of [3H]arginine to [3H]citrulline. RESULTS: Systolic blood pressure was decreased by crude saponin (100 mg/kg, iv) of KRG in the conscious control and one-kidney, one-clip Goldblatt hypertensive (IK, 1C-GBH) rats. The hypotensive effect induced by crude saponin of KRG reached maximum at 2 - 4 min and slowly recovered after 20 min to the initial level in both groups. Crude saponin of KRG induced tachycardia in the conscious rats but induced bradycardia in the a

关键词： Korean red ginseng saponins saponin-free fraction nitric oxide hypertension antihy-pertensive

STRUCTURE AND DIELECTRIC PROPERTIES OF BI-DOPED (BA, SR)TIO3 THIN FILMS FABRICATED BY SOL-GEL METHOD

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STRUCTURE AND DIELECTRIC PROPERTIES OF BI-DOPED (BA, SR)TIO3...