공단 폐슬러지에 있어서 응집제첨가에 따른 탈수특성에 관한 연구

엄태규,라원식,엄원탁,한기백 嶺南大學校 工業技術硏究所 1992 연구보고 Vol.20 No.1

To reduce the rate of water contained in the sludge of the industrial wastewater, this study was conducted by comparatively considering the dewatering effect according to addition of coagulant and dewaterability properties of sludge. The result of this study is summarized as follows. 1. The dewaterability properties of sludge presented that the suitable difference in pressure necessary a good dewaterability seems to be 200, 300㎜Hg. 2. When adding an ploymer coagulant to the sludge, its dewaterability properties showed that the higher the rate of addition, the better its dewaterability. Also, it appeared that the adequate rate of addition is about 0.3-0.7% when SS concentration of sludge is 18,000㎎/l, and that is about 0.3-0.4% when SS concentration of sludge is 35,000㎎/l, when this rate is more than 0.5%, it was shown that the dewaterability is insufficient due to both initial moment dewaterability and closing condition of the filter basin. 3. When adding 0.4% ploymer coagulant, the adding rate of inorganic coagulant indicated that the more the added inorganic coagulant, the lower the specific resistance. When the rate of addition is more than 9.0%, however, the filter water indicated a light yellow. For the reason, it is expected that the inorganic coagulant flows out ineffectively. It is expected that the adequate rate of inorganic coagulant addition is between 6.0-9.0%, therefore, while it is better to use both polymer and inorganic coagulant for dewatering the sludge.

Polyacryloyl Chloride 로부터 고분자 염료의 합성

이상원,엄달호,안태완 崇田大學校 1982 論文集 Vol.12 No.1

Several polymeric azo dyes were synthesized from reactive polymer, polyacryloyl chloride. The monomer, acryloyl chloride was synthesized, and then polymerized in N, N-dimethylformamide. Polyacryloyl chloride was reacted with 1, 4-phenylenediamine to poly-N-(4-aminophenyl) acrylamide, and the resulting polymer was investigated by infrared spectroscopy, nuclear magnetic resonance spectroscopy, and elemental analysis. The polymeric azo dyes were obtained by diazotization and coupling reaction of free amine group of the intermediate polymer. The polymeric dyes were insoluble in water and general organic solvents. The colors of these dyes were determined by visible spectrophotometry.

윈도우 기반 PLC구동 프로그램 개발

김태형,정원지,엄태진,홍대선 國立 昌原大學校 産業技術硏究所 2000 産技硏論文集 Vol.14 No.-

As personal computers are being developed, most softwares are based on window-based operating systems recently. The programmable logic controllers (PLC's) which are usually operated based on the DOS system should be adapted to the window-based environment in order to have the multi-tasking and flexibility of PLC programs. In this paper, the PLC driving programs which are based on the window-based operating systems are developed for the hardwares in which only DOS-based driving programs are being used currently.

光量과 施肥水準에 따른 산초나무, 은행 나무, 보리수 및 쥐똥나무의 新梢生長과 葉綠素 合量

金甲泰,嚴泰元 상지대학교 1994 論文集 Vol.15 No.-

To determine the effects of light intensity and fertilization level on shoot growth and leaf, chlorophyll content, of Zanthoxylum schinifolium, Ginkgo biloba, Elaeagnus umbellata and sxLigustrum obtusifolium, shoot growth and monthly change of leaf chlorophyll contents were measured and compared. Leaf chlorophyll content of four species were increased with leaf growth, showed highest value on late August, and were decreased after that time. More leaf chlorophyll content and duration on late September were found in intensive fertilization plots. The less light intensity was illuminated, the more leaf chlorophyll content of Zanthoxylum schinifolium, Ginkgo biloba and Ligustrum obtusifolium were measured. The more light was illuminated, The more leaf chlorophyll content of Elaeagnus umbellata were measured on late May, June and July. The less light intensity and more fertilization were treated, the more shoot growth of Zanthoxylum schinifolium and Ligustrum obtusifolium were measured. The more fertilization were treated, the more shoot growth of Ginkgo biloba and Elaeagnus umbellata were measured. However, Shoot growth of Ginkgo biloba and Elaeagnus umbellata were not significantly differed between light intensity. Highly significant correlations between shoot growth and leaf chlorophyll content of Zanthoxylum schinifolium was proved throughly, and significant correlations of Ligustrum obtusifolium was proved partially. Correlations between shoot growth and leaf chlorophyll content of Ginkgo biloba and Elaeagnus umbellata was proved not significant.

Morganella Morganii Sepsis with Massive Hemolysis

Tae Hyun Um,Eu Suk Kim,Jong Hoon Kim,Chong Rae Cho,Ji Yoon Rhu,Hye Ran Lee,Jae Won Jeong 대한의학회 2007 Journal of Korean medical science Vol.22 No.6

精神症狀에 대한 韓國人의 態度調査

元鎬澤,洪元植,張煥日,陳聖太,金光日,李基南,嚴龍燮,金明正 大韓神經精神醫學會 1973 신경정신의학 Vol.12 No.1

Korean psychiatrists are more apt to take the abnormal drinking behavior lightly and regard the psychosomatic symptoms as more serious, comparing with American psychiatrists. On the other hand, physicians as well as adults from the population in Korea are less concerned about the neurotic and psychosomatic symptoms and alcoholic behavior as psychiatric problems. It is the authors' concern to understand such differences in opinion about abnormal behaviors from the cultural and social psychiatric view point. The authors used Dohrenwend's questionaire form of 45 mental symptoms and three additional items i. e., homosexual behavior, symptom of senile psychosis and delusion of jealousy following the authors' interests. Each item was rated by three point cale (psychiatrically very serious=2 points, somewhat serious=1, not serious at all=0) and evaluated with critical ratio. As a preliminary study, the reliability of this questionaire was confirmed by the test-retest method; Spearman's rho was 0,93. The subjects in this study consist of 50 psychiatrists, 49 physicians, 54 herb practitioners and 154 adults from the normal population(60 urban samples and 94 rural samples). The collection was carried out by individual interviews for the physicians and normal samples, by letters for the psychiatrists and the herb practitioners. And the data of American psychiatrists compared in this study were quoted from Dohrenwend's report(27). This study has two parts: one is the cross-cultural comparison between American psychiatrists and Korean ones, the other is intracultural comparison among psychiatrists, physicians, herb practitioners and normal population samples. Inspite of the general notion that Korean psychiatry has been much oriented to American psychiatry for over twenty years, there are definite differences in opinion about the severity of abnormal behaviors between American and Korean psychiatrist, especially about alcoholic behavior and psychosomatic symptoms. Such differences are possibly interpreted as arising from the cultural differences. The American psychiatrists seem to be more concerned about alcoholic behavior probably due to the strict attitude of people and/or the fact that the United States reveals the highest incidence of alcoholism throughout the world. The Korea psychiatrists, however, have much tolerable attitude toward alcoholic behavior according to the cultural tradition. Solitary drinking is hardly found in Korea; drinking in Korea is a suitable way of interpersonal contact. They drink slowly and are not so intensively dependent upon alcohol itself. Dependency need to alcohol can be diffused to the other persons. And they take alcohol with many kinds of side-dishes. These drinking manners seem to be cultural virtues for low incidence of alcoholism in Korea. Thus, Korean psychiatrists as well as adults from normal population have highly tolerable attitude toward alcoholic behavior. Even when some person reveals a destructive behavior after drinking, they grant it as a personal charm. Korea psychiatrists, therefore, are not so nervous about the alcoholic behavior. On the other hard, the psychosomatic problems seem to be serious in Korean mental patients. They are easily apt to express their emotional problems as somatic symptoms possibly due to the disease concept of oriental herb medicine that has a high tendency of projection of emotional conflicts unto the soma. So most of Korean people are not aware that psychosomatic symptoms are originated from the emotional problems, and quite contrary to it, the psychiatrists may be highly conscious of psychosomatic symptoms. Another significant difference is seen in suicidal idea and suspiciousness: American psychiatrists regard them as more serious, and reversely Korean psychiatrists regard them as less serious. Such a pattern may also be derived from the socio-cultural differences. When Koreans are either dissapointed or delighted, they say frequently "I want to die" or "It's funny to death" and so on. This idiomatic expression is far from the real death wish but rather an expression of magnification. And the suicidal idea itself is frequently seen in normal population even suicidal attempt is evaluated as abnormal in Korea. With such reasons, Korean psychiatrists may notice suicidal idea as less serious than American psychiatrists. And the suspiciousness may be a way of living for the people under the historical turmoil and vigorous aculturation, that it is perceived as not so abnormal. The next problem is the marked discrepancy of opinion about abnormal behaviors among psychiatrists, physicians, herb practitioners and normal population samples. The agreement of physicians, herb practitioners, urban samples and rural samples with the psychiatrists on the relative severity of symptoms revealed as Spearman's rho of 0.79, 0.59, 0.58 and 0.44 respectively. It is the main point of problem that physicians are less aware of neurotic symptoms which can appear in the somatic illness, and of psychosomatic symptoms as psychiatric problem. Possible reason is that Korean physician have been oriented to the somatic medicine without proper psychosomatic orientation. On the other hand, the herb practitioners are apt to ignore the severity of psychotic symptoms and on the other, regard the neurotic and psychosomatic symptoms as much as psychiatrists' opinion. And the samples of normal population regard the neurotic symptoms as more serious than the psychotic symptoms, and are not aware of the psychosomatic symptoms as psychiatric problems. Physicians, herb practitioners and samples from the normal population underestimate the alcoholic behavior more than psychiatrists do. The alcoholism according to physicians' opinion is rather somatic problem than psychological one. The herb practitioners and adults from normal population manifest the prominently tolerable attitude toward alcoholic behavior. In conclusion, two kinds of problems can be suggested. One is that the difference between Korean and American psychiatrists in the evaluation on the severity of abnormal behaviors, is possibly due to sociocultural differences. The other is the intracultural difference among psychiatrists, physicians, herb practitioners and adults from normal population. Such a difference suggests that there is a considerable cultural lag in the disease concept and attitude between the modern psychiatry and the cultural tradition. This discrepancy can result in the undesirable wandering of patients for seeking the treatment and some hardship in modern psychiatric practitioning in Korea.

Comparison of HPV Genotyping Assays and Hybrid Capture 2 for Detection of High-Risk HPV in Cervical Specimens.

Um, Tae Hyun,Lee, Eun Hee,Chi, Hyun-Sook,Kim, Jong-Won,Hong, Young-Joon,Cha, Young Joo Institute for Clinical Science] 2011 Annals of clinical and laboratory science Vol.41 No.1

<P>High-risk types of human papillomavirus (HR-HPV) are among the primary causes of cervical cancers. Hybrid Capture 2 (HC-II) (Digene, Gaithersburg, MD), which detects 13 HR-HPVs as a group, is the only HPV assay approved to date by the United States Food and Drug Administration. In Korea, several HPV genotyping assays are commercially available, including HPV RFMP (GeneMatrix Co., Seoul), HPVDNACHIP (Biomedlab Co., Seoul), and MyHPV Chip (Mygene Co., Seoul). We compared the results of these assays with those of HC-II. Among 553 residual samples of liquid-based Pap tests, a total of 435 (78.7%) were available for HPV assays. They were classified into four cytologic categories: normal, atypical squamous cells of undetermined significance (ASCUS), low-grade cervical squamous intraepithelial lesions (LSIL), and high grade SIL or carcinoma (HSIL+). Among these samples, 23.0%, 40.6%, 82.5%, 93.8% were HR-HPV positive by HC-II, respectively; 6.6%, 18.1%, 44.4%, 84.4%, by HPV RFMP, respectively; 5.7%, 24.5%, 54.0%, 84.4%, by HPVDNACHIP, respectively; and 6.6%, 11.6%, 42.9%, 84.4%, by MyHPV, respectively. Compared with HC-II, the concordance rates and kappa values were 70.6% and 0.421 for HPV RFMP; 75.4% and 0.514 for HPVDNACHIP; and 67.8% and 0.367 for MyHPV. The concordance rates and kappa values between genotyping assays were 85.1% and 0.644 for HPV RFMP and HPVDNACHIP; 83.4% and 0.574 for HPV RFMP and MyHPV Chip; and 82.8% and 0.579 for HPVDNACHIP and MyHPV Chip. In conclusion, compared with HC-II test, the genotyping tests showed more than fair concordance but lower sensitivity in the detection of HR-HPVs, limiting their usefulness as HR-HPV screening tools.</P>

Silicon Nanowire Array Solar Cell Prepared by Metal-Induced Electroless Etching with a Novel Processing Technology

Um, Han-Don,Jung, Jin-Young,Seo, Hong-Seok,Park, Kwang-Tae,Jee, Sang-Won,Moiz, S. A.,Lee, Jung-Ho IOP Publishing 2010 Japanese journal of applied physics Vol.49 No.4

In rice, The PHOSPHATE STARVATION RESPONSE-LIKE 7 (PHL7) that Mediate Phosphate Homeostasis and Effects to Salt Stress Tolerance

Won Tae Yang,Sevin Lee,Doh Hoon Kim,Gang-Seob Lee,Seongkon Lee,Taeyoung Um 한국육종학회 2024 한국육종학회 학술발표회지 Vol.2024 No.6

LC : A Randomized, Multi-center, Phase IV Open-label Study to Evaluate the Long-term Effect of Carvedilol versus Propranolol on Reduction in Portal Pressure in Patients with Cirrhosis: An Interim Analysis

( Tae Yeob Kim ),( Joo Hyun Sohn ),( Soon Ho Um ),( Yeon Seok Seo ),( Soon Koo Baik ),( Moon Young Kim ),( Jae Young Jang ),( Soung Won Jeong ),( Young Seok Kim ),( Sang Gyune Kim ),( Dong Joon Kim ) 대한간학회 2013 춘·추계 학술대회 (KASL) Vol.2013 No.1

Background: Carvedilol, a potent non-cardioselective beta blocker with vasodilating properties due to alpha-1 blockade, is more effective in reducing portal pressure than propranolol in randomized controlled hemodynamic studies. Recently, longterm low dose of carvedilol may be suggested an option for primary prophylaxis in patients with high-risk esophageal varices. The aim of this study is to evaluate long-term effect of carvediolol versus propranolol on reduction in portal pressure in patients with cirrhosis. Methods: We conducted this ongoing prospective randomized multicenter study (target sample size: 130 patients) between July 2011 and February 2013 and analyzed clinical and hemodynamic measurement data of 99 cirrhotic patients with severe portal hypertension (HVPG > 12 mmHg). During that period, these patients were randomized to either carvedilol (mean dose 11.6±2.2 mg/day in 50 patients) or propranolol group (mean dose 153.5±100.2 mg/day in 49 patients). After randomization, 8 patients and 11 patients were dropped out in carvedilol and propranolol group, respectively. The responders were defined to achieve a fall in HVPG to < 12 mmHg or a 20% reduction from baseline values 6weeks after treatment. Results: There were no significant differences between carvedilol and propranolol group in age, sex, etiology, Child-Turcott- Pugh score, MELD score, severity of HVPG, presence of ascites and baseline serum parameters. In per-protocol analysis, the rate of responder of patients with receiving carvedilol was 54.8% (23/42) as compared with 45.2% (16/38) of those with receiving propranolol (P=0.258). In intent-to-treat analysis, the rate of responder between carvedilol and propranolol group were 46.0% and 32.7%, respectively (P=0.174). The mean decrease of HVPG was 15.6±18.1% and 8.1±30.1%, respectively (P=0.188). Finally, there was no significant difference in adverse events between two groups. Conclusions: In this interim analysis, low dose of carvedilol showed similar effi cacy in reducing portal pressure compared to propranolol in cirrhotic patients with severe portal hypertension.