• Journal of Chest Surgery
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• v.17 no.4
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• pp.762-774
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• 1984

A clinical analysis was performed on 49 cases of the benign esophageal diseases experienced at Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital during 7 year period from 1977 to 1983. Of 49 cases Of the benign esophageal diseases, there were 19 patients of esophageal stricture, 11 of achalasia, 6 of perforation, 3 of bronchoesophageal fistula, 3 of esophageal perforation, 3 of esophageal leiomyoma and one of esophageal foreign body. Twenty three patients were male and 26 were female. Ages ranged from 4 years to 74 years with the average age of 34.7 years. Of 19 patients of esophageal strictures, 7 patients were male and 12 were female and ages ranged from 6 years to 74 years with the average being 33.8 years. Causes of esophageal strictures were corrosive of esophageal strictures were dysphagia, vomiting, general weakness, weight loss and pain that order and developed on several different parts of esophagus. Operations were performed in 18 cases, of whom 7 patients were performed by esophagocologastrostomy, 4 gastrostomy, 4 esophagogastrostomy, 1 esophageal resection and esophagoesophagostomy, 1 esophagotomy and dilatation and 1 scar revision. Five patients had one or two complications; 2 anastomotic leakage, 1 wound infection, 1 localized empyema, 1 bilateral pneumothorax and 1 respiratory failure. One patient expired due to respiratory failure arising from aspiration pneumonia. The average age of achalasia patients was 33.1 years and symptom durations were from 2 months to 10 years with the average of 3.3 years. Main symptoms were dysphagia, vomiting, weight loss, pain and cough in that order. Modified Hellers myotomy was performed in 11 patients with one complication of restenosis. One patient was operated on by using longitudinal incision and transverse sutures with good result. Of 6 patient of esophageal diverticulum, 2 patients were traction diverticulum on the midesophagus, 2 were pulsion diverticulum on the midesophagus and 2 were pulsion diverticulum on the lower esophagus. Diverticulectomy was performed on 2 cases of traction diverticulum and esophagocardiomyotomy with or without diverticulectomy was erformed on 4 cases of pulsion diverticulum with good results. Of 5 patients of congenital bronchoesophageal fistula, the chief complaints were productive cough in 4 patients and hematemesis without respiratory symptoms in one patient. Two patients were operated on by using fistulectomy only and 3 by fistulectomy with pulmonary lobectomy. Of 3 patients of esophageal perforation, causes were foreign body ingestion, esophageal stricture after ECG and corrosive esophagitis. Two patient were operated on by using drainage and gastrostomy with symptomatic improvement but one patient died due to septic shock after thoracotomy. Three patients of esophageal leiomyoma were all male and 2 patients were operated on by using enucleation and one by distal esophagectomy with esophagogastrostomy. In one patient of esophageal foreign body, it was removed by esophagotomy through the right thoracotomy.

• Journal of agricultural medicine and community health
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• v.18 no.1
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• pp.43-54
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• 1993

In order to find the factors associated with the death of hypertensives, 12 year follow-up study for 267 hypertensives whose average blood pressure were 140/90 mmHg or above during their first health screening in 1979-1980 at YongJin Township, Wanju Country, North Cholla Province by the Community Health Team of Chonju Presbyterian Medical Center. The study results are as follows : 1. Initial general characteristics of hypertensives were studied. The age distribution of studied hypertensives showed 27.3% in 40-49 years, 25.8% in 50-59 years, 29.6% in 60-69 years and 17.2% In 70 + years old group. Marital status showed that 82.8% of hypertensives had their wife or husband. 74. 5% were employed on agriculture. 56.5% of hypertensives were illiterate. 2. Among the hypertensives, 91.6% of male and 22.8% of female reported that they were smokers. 82.6% of hypertensives had body mass index lower than 25 Kg/$m^2$. 46.8% of average systolic blood pressure were 160mmHg or above and 54.3% of average diastolic blood pressure were 95mmHg or above. 3. Twenty percent of hypertensives reported that they were treating hypertension at the beginning of follow up, while 68.5% reported that they were not treated. 28.1% reported that they were treating hypertension within 6 months before last follow-up. but 69.3% reported that they were not treated for hypertension within Ii months before last follow up. So 50.6% were classified as never treated group and 41.2% as treated group. 4. Average blood pressure for initial 3 years were calculated. The change of average systolic blood pressure was observed as $161.3{\pm}19.4mmHg$ at the first year, $145.6{\pm}28.0mmHg$ at the second year and $141.4{\pm}37.2mmHg$ at the third year. Average diastolic blood pressure were changed from $96.2{\pm}14.4mmHg$ at the first year to $90.6{\pm}18.6mmHg$ at the second year and $86.4{\pm}22.9mmHg$ at the third year. 5. By the follow-up of hypertensives, 54 hypertensives (46.2%) among 117 male hypertensives and 50 hypertensives (33.3%) among 150 female hypertensives died for 12 years. 42.6% of male death and 52.0% of female death were caused by cerebrovascular diseases. 6. Through univariate statistical test about the association between general characteristics or cardiovascular risk factors of hypertensives and mortality for 12 years, age variable among male and among female age, marital status, occupation. educational level. systolic blood pressure and treatment status were shown as significant variable to influence upon the mortality. 7. By multiple logistic regression analysis, among male age and systolic blood pressure were selected as significant variable to be associated with the total mortality for 12 years. Among female age, systolic blood pressure and treatment status were selected as statistically significant variable to be associated with the total mortality for 12 years.

• Journal of The Korean Society of Grassland and Forage Science
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• v.22 no.3
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• pp.195-200
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• 2002

Research trends of papers published in Journal of the Korean Society of Grassland Science(JKSGS) during last 20 years(1982~2001) were examined. Total number of papers published in JKSGS during last 20 years was 668. In the classification of published papers according to research objects, the rate of paper related to grassland was highest as average 18.6% of total research papers during last 20 years. Next was an orchardgrass 8.7, com 8.4, and sorghum and sorghum $\times$ sudangrass hybrid 7.1%. In classification of published papers according to research fields, cultivation field was studied more than others and the rate of cultivation field was highest as 38.8%, and physiology, utilization, breeding and biotechnology field was 23.7, 20.7, 9.1 and 6.6%, respectively. In comparison of average rate of research contents on the papers published during last 20 years, studies on the manure and fertilization were continously increased up to average 20% during recent 5 years(1997~2001). Study on the biotechnolgy was rapidly increased from average 6.6% of last 20 years to average 15% of recent 5 years. Study on the weed was also increased from average 2.5% to 5.9%. On the other hand, studies on the productivity and quality were rapidly decreased from average 31.3% of 5 years(1982~1956) to average 7.7% of recent 5 years. Research trend on the pasture appeared to be similar.

• Journal of Chest Surgery
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• v.29 no.9
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• pp.977-982
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• 1996

Cardiac valve implantation was performed in 107 patients from September, 1988 to May, 1995. There were 3) men and 74 women, whose ages ranged from 19 to 75 years(mean 42.6$\pm$11.7). Mitral valve was implanted in 61 patients, double(mitral & aortic) valve were Implanted in 28 patients and aortic valve was implanted in 18 patients. Follow up was 100% complete, with 345.6 patient-years and a mean fo low up of 41 months(from 1.5 to 84 months). The total mortality was 14.9%(16 patients). The early mortality was 5.6%(6 patients) and the late mortality was 9.3%(10 patients). The overall actuarial survival was 92.6 $\pm$ 2 6% at 2 years, 88.6$\pm$3.8% at 6 years. The probability of freedom from valve failure, thromboembolism and bacterial endocarditis were 388.6 $\pm$ 3.8, 88.3 $\pm$3.9, 89.5 $\pm$3.7 at 6 years, respectively.

• Clinical and Experimental Pediatrics
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• v.50 no.12
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• pp.1206-1211
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• 2007

Purpose : The aim of this study was to investigate the risk of low birth weight associated with delayed first childbearing in Korea. Methods : The national birth certificate data of the singletons and first babies in Korea from January 2001 to December 2003 (n=736,167) was used. Outcome measures were rates of low birth weight infant, very low birth weight infant between 6 maternal age group (<20 years, 20-24 years, 25-29 years, 30-34 years and >35years). Odd ratios were calculated by multiple logistic regression on marital state, maternal education, maternal occupation, paternal occupation, duration of marriage and address. Results : Compared with women aged 25 to 29 years, women aged 30-35 years, 35-40 years and over 40 years had higher odds ratios of low birth weight, odd ratios were 1.3, 2.1, 2.4 respectively. Even though adjusted by marital state, maternal education, maternal occupation, paternal occupation, duration of marriage and address, odds ratios were 1.3, 1.9, 2.0 respectively. Compared with women aged 25 to 29 years, women aged 30-35 years, 35-40 years and over 40 years had higher odds ratios of very low birth weight, odd ratios were 1.8, 3.3, 3.7 respectively. Even though adjusted, odd ratios were 1.6, 2.7, 2.6 respectively. Compared with the incidence of low birth weight in each maternal age, maternal education, marital state, married, high school graduated thirties women was lower incidence than unmarried, high school graduated twenties women. Conclusion : These findings suggest that delayed childbearing increase the risk of low birth weight and very low birth weight, but if pregnant women have better socioeconomic condition, the impact of advanced maternal age on the risk of low birth weight will be decreased.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.8 no.1
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• pp.163-176
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• 1995

The cilinical study was done in 340 patients with allergic rhinitis who had been dosed with HYUNG GAE YUN GYO TANG GAMI. The results were summarized as follows 1. Distridution by Sex and Age $64\%\;of\;them\;were\;man,\;and\;36\%$ of them were women(It was common to men than to women) Of those who were attacted(very diverse), $25.0\%$ of them were between 10 and 19 years of age(most frequent), $23.8\%$ were between 30 and 39, $18.2\%$ between 20 and 29, $14.1\%$ between birth and 9, $12.6\%$ between 40 and 49, and $6.2\%$ of them were 50 years and over. 2. Duration $47.6\%$ of them suffered from this disease for 1 to 5 years, $13.8\%$ for 10 years or longer, $24.1\%$ for both 5 to 10 years and $7.4\%$ for 6 months to 1 years, and $6.5\%$ shorter than 6 months. 3. Symptom that appeared to them were nasal obstruction($91.5\%$,top), sneezing($90\%$), rhinorrhagir($77.4\%$), headache ($30.9\%$), itch($26.8\%$), nasal discharge through gullet($15.3\%$), and pharyngitis($15.3\%$). 4. Other diseases that occured with it were sinusitis(most often), Atopic keratoconjunctivitis, allergic dermatitis, asthma, otitis media, tonsillitis, hepertropic rhinitis, nasal polyp, and atropic rhinitis(most unusual). 5. Time and Improvement After 6 months 2 cases($20\%$) were improved excellently, 3 cases($30\%$) considerablely, after 6 months to 1 year 5 case($38.5\%$) considerably, after 1 year to 5 year 10 cases($13\%$) excellently, 20 cases ($26\%$) considerably, after 5 year to 10 years 4 cases($8.7\%$) excellently, 13 cases($28.3\%$) considerable, and after 10 years 2 cases($10\%$) improved excellently, 2 cases($10\%$) considerab. 6. Dosage and Improvemont With 10 papers 6 cases($7.8\%$) were improved excellently, 22 cases($27.8\%$) considerably, with 20 papers 4 cases($10.3\%$) were improved excellently, 6 cases($15.4\%$) considerably, with 30 papers 3 cases($15.8\%$) excellently, 2 ($10.5\%$) considerably, with 40 papers 3 cases($23.1\%$) excellently, 5($38.5\%$) considerably, with 50 papers 1 cases($10\%$) excellently, 4($40\%$) considerably, with 60and 70 papers one cases($33.3\%,\;100\%$) for each was improved considerable, with 80 papers 1 cases($100\%$) excellently, and 90 papers 2 cases($66.6\%$) considerable. 7. Improvement with additional outward application With external application 8 cases($16.6\%$) were improved excellently, 9 cases($18.7\%$) considerably without external application 10 cases($8.4\%$) were improved excellently, 34 cases($28.8\%$) considerably. 8. General Improvement 18 cases($10.8\%$) were improved excellently, 43 cases($25.9\%$) improved considerably, and 40 cases($24.0\%$) improved quite a little.thus has improvement shown in 60.8 per cent of case, and proved its efficacy.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.28 no.4
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• pp.431-438
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• 1983

Experiments were conducted to know the effects of 15 years successive application of fertilizers and organic matters on the soil properties, plant growth and yield of rice. Application of fertilizers and organic matters for 15 years in same plots were increased soil pH, OM, and CEC, but decreased $SiO_2$ and Ca content in paddy soil. Organic matter application for 15 years was increased OM about 0.5% compare to non-applied plot. Particulary lime application was increased soil pH, $SiO_2$, Ca and CEC in paddy soil. NPK+compost and NPK+straw application were increased number of panicles and number of spikelets per unit area, but decreased ripening ratio compare to NPK applied plot. Average grain yield for 15 years in the non-fertilized, -N, -P, -K, NPK+compost, NPK+straw and NPK+lime applied plot was 47, 51, 88, 95, 113, 117, and 106% of yield conpare to NPK applied plot, respectively.

• Journal of Information Science Theory and Practice
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• v.3 no.3
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• pp.75-80
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• 2015

Methods and Material: The PubMed database was used for retrieving data on 'cancer biology.' Articles were downloaded from the years 2000 to 2011. The articles were classified chronologically and transferred to a spreadsheet application for analysis of the data as per the objectives of the study. Statistical Method: To investigate the nature of growth of articles via exponential, linear, and logistics tests. Result: The year wise analysis of the growth of articles output shows that for the years 2000 to 2005 and later there is a sudden increase in output, during the years 2006 to 2007 and 2008 to 2011. The high productivity of articles during these years may be due to their significance in cancer biology literature, having received prominence in research. Conclusion: There is an obvious need for better compilations of statistics on numbers of publications in the years from 2000 to 2011 on various disciplines on a worldwide scale, for informed critical assessments of the amount of new knowledge contributed by these publications, and for enhancements and refinements of present Scientometric techniques (citation and publication counts), so that valid measures of knowledge growth may be obtained. Only then will Scientometrics be able to provide accurate, useful descriptions and predictions of knowledge growth.

• Journal of Chest Surgery
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• v.22 no.1
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• pp.106-115
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• 1989

Clinical results with the xenograft cardiac valves were reviewed for 212 patients who underwent heart valve replacement from January 1981 to December 1987. One hundred and twenty-four Carpentier-Edwards k 88 Ionescu Shiley valves were used. Overall operative mortality was 11 out of 212[5.1%]: 5 out of 153[3.39o] for mitral valve replacement [MVR], 2 out of 34[5.9%] for aortic valve replacement [AVR], 0 out of 4[0%] for Tricuspid valve replacement [TVR], and 4 out of 21[19.1%] for double valve replacement [DVR;MVR+ AVR]. Two hundred and one operative survivors were followed up for a total of 824.3 patient-years [a mean 3.9*1.8 yrs], and the follow up was 78.1%. The linealized complication rates were 0.1% emboli / patient-year, 1.0% endocarditis/ patient-year and 2.2% overall valve failure / patient-year. A linealized rate of primary tissue failure was 0.7*/o/ patient-year. The actuarial survival rates including the operative mortality were 92*2.8% at 4 years and 85*4.3% at 7 years after surgery using the Xenograft cardiac valves. Probabilities of freedom from thromboembolism and overall valve failure were 73*11.0% and 69*2.4% at 7 years after surgery using the Xenograft cardiac valves respectively. The intrinsic durability of the Xenograft cardiac valves appears to be relatively well satisfactory over the long term [4 to 7 years] and the risk of failure appears well balanced by the advantages of a low incidence of thromboembolism and no mandatory anticoagulant therapy.

• Journal of Veterinary Clinics
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• v.20 no.3
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• pp.413-418
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• 2003

This survey of endoparasite infections among stray cats in Korea has been carried out during November 1995 to October 1997. A total of 215 stray cats were collected from SeoulㆍGyeonggi (54), Gangwon (38), Chungchong (34), Jeonla (38), and Gyeoungsang (51) areas. The positive rate of endoparasites was 184 (85.6%) cats among 215. Of isolated parasites, nematodes were the most often detected parasites especially Toxocara cati (102 cats), Ancylostoma tubaeformae (9 cats). The next most often detected parasites were cestodes (60/215; 27.9%) sepecially Spirometra erinaecei (34 cats), Taenia taeniaformis (26 cats). Opisthorchis tenuicollis was found in bile duct (9 cats) and Isospora spp. were identified in 41 cats (19.1 %). In mixed parasite infection, the rate of infections of nematodes, trematodes and protozoas was 3.3%, nematodes and cestodes with 8.8%, nematodes and protozoa with 4.2%, cestodes and protozoa with 1.9%. In parasitic infection by a considering age category, age from 2 to 4 years had the highest infection (92.3%), 1-2 years were 87.6%, over 4 years was 80.0%. 79.6 percents of the stray cats in SeoulㆍKyounggi areas were ranked the 1st in parasite infection. The next was Kyoungsang 76.5%, Kangwon 65.8%, Cholla 63.2% and Chungchong 61.8% in order. Considering age categories from birth to greater than 4 years, parasite infections were most prevalent in cats 2 to 4 years old; other ages seemed to have no effect on prevalence of parasitism. Also sex seemed to have no effect on prevalence of parasitism. In endoparasite infection, nematode and cestode infections were most frequently found, trematode infections were low, coccidiosis was showed very often.