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소각 비산재의 적정처리를 위한 기초연구(Ⅱ) : 용출인자의 영향;Effect of Leaching Parameter
김진범,이우근,심영주 江原大學校 附設 環境硏究所 2000 環境硏究 Vol.17 No.-
본 연구는 소각 비산재의 물리·화학적 특성이 중금속의 용출 거동에 미치는 영향을 알아보고자 수행하였다. 영향인자로는 비산재의 pH, CEC, 입자크기, 연속추출방법에 의해 분류된 중금속의 존재형태 중에서 exchangeable fraction을 고려하였다. KSLT법에 의한 중금속의 용출율은 pH에 크게 의존적이고 원소에 따라 차이를 보였다. 카드뮴과 구리의 용출율은 pH가 증가함에 따라 감소한 반면, 납과 아연은 중성 또는 강알칼리성 조건에서 증가하는 것으로 나타났는데 중금속의 용출 거동이 용해도에 의해 제한됨을 나타내 준다. CEC가 중금속의 용출율에 미치는 영향은 pH와 비슷한 것으로 나타났다. 비산재의 입자크기 중에서 D_(10)은 KSLT법에 의한 중금속의 용출량과 음의 상관성을 나타내었다. Exchangeable fraction의 경우는 비산재의 CEC 값이 40 meq/100g 미만인 시료는 선형관계에 있지만, 그 외의 CEC 값에서는 비선형관계를 보여주었다. Our study was performed to evaluate the effect of leaching parameters including the physicochemical characteristics and the fractionated composition of heavy metals on the release of heavy metals in fly ash discharged from MSWI. Leaching parameters such as pH, CEC, particle size, and exchangeable fraction among the fractional composition classified by sequential extraction procedure are considered. The leaching rate of heavy metal released by KSLT method is largely dependent on the pH of fly ash. The effect of pH on the release of heavy metals is different from elements. It appears that the leaching rate of cadmium and copper decreases with increasing pH, While lead and zinc increases at the condition of neutral or strong alkali condition, which suggests that the leaching of heavy metals are limited by the solubility. It is found that the effect of CEC is similarly to that of pH. D_(10) among the particle size of fly ash is negative correlated with the concentration of heavy metals leached by KSLT method. In the case of exchangeable fraction, the leaching rate of heavy metals is linearly correlated with the exchangeable fraction for the fly ash below 40 meq/100g of CEC, but not related out of the range.
MCCARD: MONTE CARLO CODE FOR ADVANCED REACTOR DESIGN AND ANALYSIS
Shim, Hyung-Jin,Han, Beom-Seok,Jung, Jong-Sung,Park, Ho-Jin,Kim, Chang-Hyo Korean Nuclear Society 2012 Nuclear Engineering and Technology Vol.44 No.2
McCARD is a Monte Carlo (MC) neutron-photon transport simulation code. It has been developed exclusively for the neutronics design of nuclear reactors and fuel systems. It is capable of performing the whole-core neutronics calculations, the reactor fuel burnup analysis, the few group diffusion theory constant generation, sensitivity and uncertainty (S/U) analysis, and uncertainty propagation analysis. It has some special features such as the anterior convergence diagnostics, real variance estimation, neutronics analysis with temperature feedback, $B_1$ theory-augmented few group constants generation, kinetics parameter generation and MC S/U analysis based on the use of adjoint flux. This paper describes the theoretical basis of these features and validation calculations for both neutronics benchmark problems and commercial PWR reactors in operation.
Enteritis cystica profunda with lipoma in the second portion of the duodenum: a case report
( Beom Jin Shim ),( Seung Keun Park ),( Hee Ug Park ),( Tae Young Park ) 영남대학교 의과대학 2022 Yeungnam University Journal of Medicine Vol.39 No.1
Enteritis cystica profunda (ECP), a rare and benign condition, is defined as the displacement of the glandular epithelium into the submucosa and more profound layers of the small intestinal wall leading to the formation of mucin-filled cystic spaces. ECP frequently occurs in the ileum or jejunum and is associated with diseases such as Crohn disease and Peutz-Jeghers syndrome. ECP also develops in the absence of known pathology. ECP in the duodenum is very rare and mostly occurs without associated conditions. In this report, we present a rare case of ECP without an associated disease, in the second portion of the duodenum distal to the ampulla of Vater and coexisting with lipoma within the polypoid lesion.
Kim, Beom Jin,Kim, Hyun-Soo,Song, Hyun Joo,Chung, Il-Kwun,Kim, Gwang Ha,Kim, Byung-Wook,Shim, Ki-Nam,Jeon, Seong Woo,Jung, Yun Jin,Yang, Chang-Hun,Kim, Ji Hyun,Kim, Tae Ho,Kim, Sang Gyun,Shin, Woon Ge The Korean Academy of Medical Sciences 2016 JOURNAL OF KOREAN MEDICAL SCIENCE Vol.31 No.8
<P>Eradication of <I>Helicobacter pylori</I> using first-line therapy is becoming less effective. Subjects who had been treated for <I>H. pylori</I> infection were prospectively enrolled through an on-line database registry from October 2010 to December 2012. Demographic data, detection methods, treatment indication, regimens, durations, compliance, adverse events, and eradication results for <I>H. pylori</I> infection were collected. Data of 3,700 patients from 34 hospitals were analyzed. The overall eradication rate of the first-line therapy was 73.0%. Eradication failure was significantly associated with old age, concomitant medication, and comorbidity. Regional differences in eradication rates were observed. The most common first-line therapy was proton pump inhibitor-based triple therapy (standard triple therapy, STT) for 7 days (86.8%). The eradication rates varied with regimens, being 73% in STT, 81.8% in bismuth-based quadruple therapy, 100% in sequential therapy, and 90.3% in concomitant therapy. The eradication rate in treatment-naïve patients was higher than that in patients previously treated for <I>H. pylori</I> infection (73.8% vs. 58.5%, <I>P</I> < 0.001). The overall eradication rate for second-line therapy was 84.3%. There was no statistical difference in eradication rates among various regimens. <I>H. pylori</I> eradication rate using STT is decreasing in Korea and has become sub-optimal, suggesting the need for alternative regimens to improve the efficacy of first-line therapy for <I>H. pylori</I> infection.</P>
맹꽁이 서식처 복원을 위한 서식처 적합성 지수(HSI) 개발
심윤진 ( Yun Jin Shim ),조동길 ( Dong Gil Cho ),박소현 ( So Hyun Park ),이동진 ( Dong Jin Lee ),서윤희 ( Yun Hee Seo ),김상혁 ( Sang Hyuk Kim ),김덕호 ( Duck Ho Kim ),고상범 ( Sang Beom Ko ),차진열 ( Jin Yeol Cha ),성현찬 ( Hyun C 한국환경복원기술학회(구 한국환경복원녹화기술학회) 2014 한국환경복원기술학회지 Vol.17 No.2
Kaloula borealis is the species of Amphibia which belongs to Kaloula genus and it is the only species inhabiting in Korea. The population size and habitat of Kaloula borealis have been significantly decreased on a national scale due to the diversified developments and the uses of agricultural pesticides. Accordingly, the Ministry of Environment has designated and managed them as the class II of endangered species, in accordance with ?Endangered Species Protection and Management Act?; however, a particular study focused on the ecological restoration of Kaloula borealis is desperately needed to prevent their extinction. This study was conducted to propose the HSI (Habit Suitability Index) of Kaloula borealis based on literature survey on ecology and habitats of Kaloula borealis, as well as their HSI. Factors to be investigated in HSI include: space, feed, cover, water(breeding) and threatening factors and the variables of each factor were also proposed. The distance from wetland, grassland, farm, stream and rice paddy, as well as the altitude of spawning pond were proposed as the variables of space, whereas the bed structure of forest and low-rise grassland were proposed as the variables of feeding. The variables of water (breeding) include the area of permanent and temporary wetlands, coverage of emerged pants (ratio of open water), water depth, water temperature, water quality, pH level, etc., whereas the presence of predator, distance from street and pollutants were proposed as the variables of threatening factor. The sub-standards by HSI factor of Kaloula borealis have been drawn from in-depth consultation with experts and based on this, the final HSI of Kaloula borealis was developed.
Shim, Ju-Sun,Lee, Ok-Ran,Kim, Yu-Jin,Lee, Jung-Hye,Kim, Ju-Han,Jung, Dae-Young,In, Jun-Gyo,Lee, Beom-Soo,Yang, Deok-Chun The Korean Society of Ginseng 2010 Journal of Ginseng Research Vol.34 No.2
The medicinal plant Panax ginseng (P. ginseng) contains various phytosterols and bioactive triterpene saponins (ginsenosides). Squalene synthase catalyzes the first committed step in ginsenoside biosynthesis. Transgenic plants of P. ginseng were generated by introducing the squalene synthase gene derived from P. ginseng. Adventitious roots of the transgenic ginseng grew best in B5 medium, and 2 g of inoculum secured an optimal growth rate. Two phytohormones, indolebutyric acid and 1-naphtalene acetic acid, increased root growth and decreased ginsenoside production. Treatment with two selected elicitors, chitosan and jasmonic acid, and a precursor of the isoprenoid pathway, mevalonic acid, enhanced ginsenoside production and retarded ginseng growth rate.
( Jin Kim ),( Jung Eun Kim ),( Ji Young Lim ),( Sang Hee Yoon ),( Sun Joo Lee ),( Soo Nyung Kim ),( Soon Beom Kang ),( Seung Hyuk Shim ) 대한산부인과학회 2012 대한산부인과학회 학술대회 Vol.99 No.-
To determine the relationship between preoperative hypoalbuminemia and the development of complications after gynecological cancer surgery, as well as postoperative bowel function and hospital stay. The medical records of 585 patients with elective gynecological cancer surgery at Konkuk University Hospital during 2005 and 2013 were reviewed. The patients had pre-operative serum albumin assessment. Albumin less than 3.5g/dL was defined as hypoalbuminemia. All peri- and postoperative complications within 30 days after surgery, including mortality, complications, time to resumption of normal diet and length of hospital stay, were analyzed. The median age was 47 (range, 21-79) years. Thirty-four patients (17%) had hypoalbuminemia. Hypoalbuminemic patients had significantly higher consumption of alcohol >2 standard drinks per day and higher rate of preoperative systemic infection compared with non-hypoalbuminemic patients (14.8% vs 1.6%; p=0.001, 0% vs 11.1%; p<0.001, respectively). Overall complication rate within 30 days after surgery was 21.9%. Hypoalbuminemic patients were more likely to develop at least 1 postoperative complication compared to non-hypoalbuminemic patients (37% vs 24%; p=0.039). Time to resumption of normal diet in hypoalbuminemic patients was significantly longer than that in non-hypoalbuminemic patients (3.3 vs 2.6 days, p=0.020), whereas length of hospitalization was not significantly different between the two groups. In univariate analysis, hypoalbuminemia, laparotomy (vs laparoscopy) and intraoperative estimated blood loss were risk factors for postoperative complications. In multivariate analysis, after controlling for age, complexity of surgery, cancer site, Charlson morbidity index, smoking, body mass index, operative time, preoperative chemotherapy or radiotherapy, and American Society of Anesthesiology physical status classification scores, hypoalbuminemia (odds ratio 3.219, 95% CI 1.246-8.314; p=0.016) and estimated blood loss (odds ratio 1.001, 95% CI 1.000-1.002; p=0.013) remained as significant risk factors. Preoperative hypoalbuminemia in patients with elective surgery for gynecologic malignancy is an independent predictor of postoperative morbidity. Although the causes of hypoalbuminemia are multifactorial, identification of this subset of patients and preoperative optimization of nutritional status may improve surgical outcomes in this high risk population.