• Korean Journal of Soil Science and Fertilizer
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• v.43 no.2
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• pp.119-123
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• 2010

This experiment was conducted at Sinheung series (fine loamy, mixed, nonacid, mesic family of Fluvaquentic Endoaquepts) in 2007 to 2008 at the National Institute of Crop Science (NICS), RDA, Suwon, Gyeonggi province, Korea. Three kinds of green manure crops (hairy vetch, barley, rye) incorporated in soil for rice cultivation. 6.3 kg N $10a^{-1}$, and3.2 kg $P_2O_5$ $10a^{-1}$ were applied to rye and barley plot before rice transplanting. Chemical fertilizers had not been applied to hairy vetch plot. Glomalin concentration, soil bulk density, and porosity were measured in soil from different green manure crops incorporation after rice harvesting in paddy. Soil bulk density and porosity after rice harvesting improved at surface soil of hairy vetch incorporation plot. Degree of water stable aggregates increased all green manure incorporation plots. Glomalin concentrations significantly increased at hairy vetch incorporation treatment. In barley plot, the concentration of glomalin increased at 10-20 soil depth. There were no differences relationship between soil carbon, and glomalin concentration, but relationship between soil aggregate stability, and glomalin concentration significantly positive under green manure crop-rice cropping system. Rice yield decreased at hairy vetch incorporation plot because of field lodging. We suggested that hairy vetch incorporation should be considered about application amount, and water management using rice cultivation because of soil properties changes.

• The Journal of the Korea Contents Association
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• v.15 no.3
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• pp.168-173
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• 2015

Use of forearm and hip joint bone density scan and find the clinical usefulness of the results that can be inferred as a result of any other region sites injured by a correction factor which if One part up. Groups of 60 patients, 10 patients by age 20-70 were composed of patients measured with the forearm and lumbar spine bone mineral density T-score and Z-score of the survey for each of the three factors that it was Find the correction factor to obtain the relationship. Bone mineral density of the correlation coefficient R = 0.8 correction factor is Y = 1.341X + 0.146. T-score of correlation coefficient R = 0.804 and the correction factor Y = 0.565X - 0.327 is Z-score of the correlation coefficient R = 0.637 correction factor Y = 0.539X - 0.225. It is regarded that there will be a clinical availability which can analogize the result of a part by using the result of the other part. It will be able to determine an auxiliary role in the clinical diagnosis. Correction factor to the equation Y = 1.341X + 0.146 is recommended.

• Korean Journal of Soil Science and Fertilizer
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• v.44 no.2
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• pp.181-186
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• 2011

Green manure crops are primarily used to reduce the application of chemical fertilizers. In this study, a two-year field experiment was conducted to evaluate the effects of green manure hairy vetch on rice growth and saving of irrigation water. This experiment was conducted at Sinheung series (fine loamy, mixed, nonacid, mesic family of Fluvaquentic Endoaquepts) from 2008 to 2009 at the National Institute of Crop Science (NICS), RDA, Suwon, Gyeonggi province, Korea. Hairy vetch as a green manure crop was incorporated in soil for rice cultivation. Chemical fertilizers had not been applied to hairy vetch plot. Treatments included once irrigation (OI) per week and conventional irrigation (CI). In 2008, the water use efficiency of OI increased by 46% compared to CI by hairy vetch application during rice cultivation season (water treatments were started 38 days after rice transplanting). In 2009, the water use efficiency of OI increased by 61.3% compared to CI by hairy vetch application during rice cultivation season (water treatments were started 30 days after rice transplanting). Soil physical properties such as bulk density, soil porosity ratio and glomalin contents were improved by the incorporation of hairy vetch. The rice yield of OI water management was not significantly different from those of CI water management by hairy vetch application both years. These results suggest that the OI water management with hairy vetch incorporated in soil for rice cultivation can be used in rice fields to reduce the amount of irrigation water and chemical fertilizer.

• Korean Journal of Soil Science and Fertilizer
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• v.45 no.5
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• pp.805-809
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• 2012

To evaluate the effects of liquid pig manure (LPM) on green manure crop yields, plant height and biomass of green manure crops were investigated in single and companion cropping. Green manure crops used for this experiment were Hordeum vulgare L. (green barley) and Vicia villosa roth (hairy vetch). Field experiment was designed with LPM 1.65 (LPM of $1.65ton\;10a^{-1}$ + single and companion green crops), LPM 3.3 (LPM of $3.3ton\;10a^{-1}$ + single and companion green crops) and LPM 6.6 (LPM of 6.6$6.6ton\;10a^{-1}$ + single and companion green crops). In single cropping, plant height were high in LPM 3.3. In companion cropping, plant height were high in LPM 6.6. Thus, we found that application of LPM is general enough to reduce use of chemical fertilizer. Also, optimum application level in single cropping would be LPM 3.3 and in companion cropping would be higher than LPM 3.3.

• Korean Journal of Plant Resources
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• v.24 no.5
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• pp.636-641
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• 2011

Four different green manure crops, hairy vetch, Italian ryegrass, crimson clover, orchard grass were cultivated to test the differences in their effects on soil improvement. After plowing to incorporate the green manure crops, tomato plants were grown as a succeeding crop to investigate the effects of green manure on the soil physical properties and plant growths. The experimental results showed that green manure could decrease the soil hardness. Italian ryegrass and hairy vetch as the green manure were especially effective in decreasing the soil hardness. Orchard grass and Italian ryegrass provided more void in soil matrix, resulting increased soil moisture contents. After two months, bulk density was decreased in the plots of Italian ryegrass and orchard grass. However, there were no significant differences between green manure plots and control after the cultivation of the succeeding crop. The results indicated that the growing Italian ryegrass and hairy vetch as green manure helped growing tomato plants. Orchard grass also improved the soil characteristics, comparable to Italian ryegrass in spite of their relatively small biomass.

• The Proceeding of the Korean Institute of Electromagnetic Engineering and Science
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• v.19 no.5
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• pp.87-103
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• 2008

In recent years, the field of THz photonics based on THz pulse technology has gained tremendous, world-wide interest as a new exciting research subject. With a possibility of many commercial applications as well as fundamental scientific achievements in the field, many advanced nations are stepping up their effort in advancing the field of THz photonics. This fact is supported by the observation of the significant increase in the number of papers on THz pulse technology presented in renowned international journals and conferences. The subject that is interesting for the THz application is the development of THz pulse sources and detectors, and other passive devices. In this paper, we present a brief review on some of the key devices and their relavant measurement techniques such as THz photoconductive antennas, optical rectification, difference frequency geneneration with quasi-phase matching structures, electro-optic sampling, high speed real time measurements, THz transmission lines, and other various waveguide structures.

• Archives of Plastic Surgery
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• v.47 no.6
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• pp.574-582
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• 2020

Background Several oncoplastic approaches have been implemented in recent years to enhance cosmetic results and to reduce complications. The round block technique is a volume displacement technique for breast reconstruction after breast-conserving surgery (BCS). However, its indications are currently limited according to tumor location, and its cosmetic results and complications have not been clearly established. We hypothesized that the round block technique could produce favorable cosmetic results without major complications regardless of tumor location or nipple-tumor distance, below a certain resected tumor volume and tumor-breast volume ratio. Methods All breast reconstructions using the round block technique after BCS were included in this analysis. Patients' data were reviewed retrospectively to investigate complications during follow-up, and clinical photos were used to evaluate cosmetic results. The relationships of tumor location, nipple-tumor distance, tumor volume, and the tumor-breast volume ratio with cosmetic results were investigated. Results In total, 108 breasts were reconstructed. The mean resected tumor volume was 30.2±15.0 mL. The cosmetic score was 4.5±0.6 out of 5. Tumor location, nipple-tumor distance, tumor volume, tumor-breast volume ratio, radiotherapy, and chemotherapy had no significant effects on cosmetic results or complications. There were no major complications requiring reoperation. Conclusions Breast reconstruction using the round block technique after BCS can lead to good cosmetic results without major complications regardless of the tumor location, nippletumor distance, radiotherapy, or chemotherapy. Below the maximum tumor volume (79.2 mL) and the maximum tumor-breast volume ratio (14%), favorable results were consistently obtained.

• The Journal of Korean Physical Therapy
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• v.11 no.1
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• pp.23-43
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• 1999

A study on severity of cerebro-vascular accident patients in Korea was conduced in order to determine the risk factors affecting the severity of stroke patients. This study was performed by interviewing a total of 477 hospitalized and ambulatory patient of CVA in Seoul, Taejon, and Taegu and Pusan areas from April 1, 1998 through June 30, 1998. The results are as follows; 1. Two hundred and sixty seven $(56\%)$ at Four hundred and seventy seven subjects were manes, md two hundred and ten $(44\%)$ were females. $28.3\%$ of the subjects' ages were 50's and $27.3\%$ were 60's and $18.5\%$ were 70's. $22.6\%$ of the subjects' occupations were home makers, $17.8\%$ were farming. $66.4\%$ of the subjects spent their childhood in urban areas and $33.1\%$in rural areas. $41.7\%$ of the subjects became violin of CVA in Spring, $35.0\%$ in Winter. 2. On physical and mental conditions of the subjects at the occurrence of CVA, $28.7\%$ of the subjects were engaged in physical activities. $22.6\%$ were in a rest stale $19.5\%$ were in sleeping and $18.9\%$ were mentally shocked. $79.4\%$ of the male subjects and $14.8\%$ of female subjects smoked cigarettes. $82\%$ of male subjects drank coffee. $81.1\%$ of the subjects did not exercise regularly. $45.9\%$ of the subjects had the systolic blood pressures in the range of 160 to 199 mmHg and $5.6\%$ of the subjects had hypertension before the occurrence of stroke and $11.7\%$ had diabetes. 3. Of the types of strokes, cerebral hemorrhage was the highest $(49.1\%)$. cerebral infarction was the second $(41.1\%)$. Severe strokes were found in cerebral hemorrhage cases $(52.0\%)$ and cerebral infarction cases $(40.1\%).\;50.9\%$. of the male subjects were moderate cases, $50.9\%$ were severe cases. In females, moderate cases were $72.4\%$, severe cases $15.2\%$. $37.5\%$ of the subjects who had preceding diseases were severe cases, and $15.6\%$ of the subjects without preceding diseases were severe cases. $50.7\%$ of the subjects whose family members had strokes had severe strokes. $34\%$ of the subjects sleeping less than 6 hours a day, $42.4\%$ of the subjects with irregular eating habits, $33.3\%$ of the subjects who liked meat, and $42.3\%$ of the subjects who liked salty foods had severe strokes. $35.9\%$ of the subjects with hot temper, $27.6\%$ of the subjects with moderate temper and $14.5\%$ of subjects with mild temper were severe cases. 4. The correlation coefficient between obesity and blood pressure was 0.094.

• Journal of the Society of Disaster Information
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• v.16 no.1
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• pp.192-202
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• 2020

Purpose: The purpose of this study is to prepare a more efficient operation alternative for both systems by comparing and analyzing the recently introduced COOP(Continutiry of Operation Plan) and existing NIPP(National Infrastructure Protection Plan). Method: The basic data of the two systems were collected for research and compared and analyzed by dividing them into the content and procedural aspects. In addition, The efficient operation alternative were derived for experts in the disaster area by utilizing AHP. Result: The National Infrastructure Protection Plan(NIPP) and the Continuity of Operation Plan(COOP) were found to be very similar in terms of content and procedures, and the AHP survey also found that integrating the two schemes was a more efficient and effective operation method. Conclusion: As the recently introduced the Continuity of Operation Plan(COOP) has a wider area of activity than the National Infrastructure Protection Plan(NIPP), and has a continuous management system structure with a more precise workframe, A more efficient national safety net will be realized by reorganizing and integrating it into a more enhanced the Continuity of Operation Plan(COOP) through readjustment of relevant laws and regulations.

• Proceedings of the Korean Vacuum Society Conference
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• 2010.08a
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• pp.264-265
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• 2010

최근, nanorod나 nanowire와 같은 1차원의 나노구조가 나노디바이스로 각광을 받고 있다. [1] 특히 InN는 3족 질화물 반도체 중 가장 작은 밴드갭 에너지와 뛰어난 수송 특성을 가지고 있어 나노디바이스로의 응용에 적합한 물질이다. [2] 그러나 InN는 큰 평형증기압을 가지므로 쉽게 인듐과 질소로 분해되는 특성이 있어 나노구조로의 성장이 쉽지 않음이 알려져 있다. [3] 최근 연구결과에 따르면, InN 나노구조는 금속 catalyst를 사용한 방법이나, 기판 위 패턴을 이용하여 성장하는 방법, 염소를 사용한 방법이 널리 쓰이고 있다. [4,5,6] 그러나 이 방법들은 의도치 않은 불순물의 원인이 되거나 다른 추가적인 과정을 필요로 한다는 문제점도 일부 가지고 있다. 본 연구에서는 catalyst-free 유기 금속 화학 증착법 (MOCVD)를 이용하여 $Al_2O_3$ (0001)면 위에 InN nanostructure를 성장하였다. InN nanostructure 성장 시 트리메틸인듐(TMIn)과 암모니아($NH_3$) 를 전구체로 사용하였으며, 캐리어 가스로는 질소를 사용하였다. 또한 모든 샘플의 성장시간은 60분으로 고정하였으나, 성장 시 온도의 의존성을 보기 위해 $680-710^{\circ}C$ 의 온도범위에서 성장을 진행하였다. 그 결과 InN는 본 실험에서 적용된 성장온도범위 내에서 온도가 증가함에 따라 초기에는 columnar구조로 성장된 박막의 형태에서 wall이 배열된 형태로 변화하며 결국 $710^{\circ}C$ 의 온도에서 nanorod로 성장하게 된다. 성장된 InN의 나노구조는 X-선 회절 측정법, 주사 전자 현미경 그리고 투과 전자 현미경을 이용하여 각각의 구조적 특성을 분석하였다. X-선 회절 측정법과 주사 전자 현미경을 통한 분석결과에서는 이들 nanorods가 대부분 c 방향으로 수직하게 정렬되어 있음을 확인 할 수 있었다. 또한, $690^{\circ}C$ 에서 60분간 성장된 InN의 wall 구조의 두께는 200 nm, 길이는 $2-2.5\;{\mu}m$로 관찰되었으며, $710^{\circ}C$에서 60분간 성장된 InN nanorod의 지름은 150 nm, 길이는 $3\;{\mu}m$ 정도로 관찰되었다. 이를 통하여 볼 때 성장 온도가 InN의 나노구조 형성 시 표면의 모폴로지변화에 중요한 변수로 작용함을 알 수 있다. 본 발표에서는 이러한 표면 형상 및 구조 변화가 성장온도에 따른 관계성을 가짐을 InN의 분해와 성장의 경쟁적인 관계에 의해 논의할 것이다.