• The Journal of Engineering Geology
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• v.19 no.3
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• pp.389-400
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• 2009

Iron and manganese contents are usually over the limit of drinking water standard (0.3 mg/L) in unconsolidated aquifer of river bank filtration site in Nakdong river. Surge block and air surging techniques used in this study are useful tools to remove the slime within gravels and pebbles, to increase permeability of aquifer, to provide oxygen into aquifer, and to discharge iron and manganese oxides from a well. Surging activity brought about $5{\sim}8$ and $5{\sim}9$ times decreases in $Fe_{(total)}$ and $Fe^{2+}$ contents, and also 10 times decrease in $Mn^{2+}$ contents compared to non-surging condition, respectively. Additionally, iron oxide and manganese oxide increased up $1{\sim}1.2$ times after surging. This result shows that air injection into the aquifer can help iron and manganese content decreased and in-situ treatment technology needs to be introduced in river bank filtration project in South Korea.

• Korean Journal of Food Science and Technology
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• v.28 no.3
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• pp.490-496
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• 1996

This study was undertaken in order to elucidate the elimination of phenthoate residues by washing and cooking processes of rice which if the most important food crop in Korea. When contaminated rice was washed with distilled water three times, the removal rate of total phenthoate was 51%. The removal rate in the successive washings was 37.3% (wash filtrate 7.8%, wash sediment 29.5%) in the first, 14.3% (wash filtrate 6.2%, wash sediment 8.1%) in the second and 8.9% (wash filtrate 5.8%, wash sediment 3.1%) in the third washings. More than half of the residue was removed by the first washing and most residues were found in the sediment rather than in the filtrate of the rice washings. The residue rate of phenthoate after cooking by an electric rice cooker was 41%, indicating that the removal rate after cooking was 59%, because phenthoate is thermally stable at the cooking temperature. In conclusion, phenthoate residues contaminated in rice grains are grcatly removed in the washing process and it is desirable to wash the grains before cooking in order to decrease the hazards from pesticide residues such as phenthoate. Reduction factor of phenthoate in rice cooking is proposed to be 0.4.

• Journal of the Korean Society of Food Science and Nutrition
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• v.46 no.5
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• pp.600-607
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• 2017

The total acidity (TA) of Makgeolli was affected by suspended solids and $CO_2$ produced during the fermentation process. Nine Makgeollis (four sterilized and five unsterilized Makgeollis) were collected in the market, and their TAs were compared before and after filtration and $CO_2$ removal. TAs of sterilized Makgeollis were 0.379~0.477%, which significantly decreased to 0.167~0.225% after filtration and 0.132~0.170% after $CO_2$ removal (P<0.05). TAs of unsterilized Makgeollis were 0.412~0.467% and decreased to 0.157~0.365% after filtration and 0.143~0.280% after $CO_2$ removal (P<0.05). TAs of Makgeollis were compared by three methods using different indicators. The TAs of sterilized and unsterilized Makgeollis were 0.105~0.123% and 0.105~0.200%, respectively, by bromthymol blue+neutral red (light green), 0.129~0.154% and 0.130~0.255%, respectively, by phenolphthalein (faint pink), and 0.120~0.146% and 0.130~0.232%, respectively, by bromthymol (blue). Nowadays, Makgeolli is commercialized with various distinct colors, and thus it is important to select appropriate indicators for proper titration endpoint identification for TA measurement. The compositions of organic acids profiles varied depending on sterilized or unsterilized Makgeollis, in which oxalic acid (0.108~0.329 mg/mL), malic acid (ND to 0.134 mg/mL), lactic acid (0.127~0.776 mg/mL), and citric acid (ND to 1.159 mg/mL) were found, and lactic acid was in unsterilized more than sterilized Makgeollis.

• Journal of Chest Surgery
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• v.34 no.3
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• pp.243-245
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• 2001

여호와의 증인을 부모로 둔 환아는 생후 4개월, 5.6kg이었다. 심초음파상 완전 대혈관 전위와 심실 중격 결손, 심방 중격 결손, 동맥관 개존중 및 양측상대 정맥이 관찰되었다. 수술전 혈색소 값은 14.9 g/dl이었다. 수혈없이 심실 중격 결손 교정과 대혈관 치환술을 시행하였으며, 별문제 없이 수술 후 16일에 환아는 퇴원하였다. 퇴원 당시 혈색소 값은 12.8 kg/dl 였다. 복잡 심기형을 가진 영아에서 수술전 eryrhropoietin의 투여, 수술중 철저한 지혈 및 초여과법등의 방법으로 수혈 없이 완전 교정술이 가능하였기에 보고하는 바이다.

• Journal of Korean Biological Nursing Science
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• v.12 no.2
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• pp.114-126
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• 2010

Purpose: To examine the levels of the disease-related knowledge and educational demands of pre-dialysis, chronic renal failure patients at different GFRs and stages. Methods: This study used a cross-sectional survey and aimed at 116 pre-dialysis, chronic renal failure patients, who were registered and received regular treatment from December 1 to December 31, 2009 at the nephrology departments of tertiary medical centers in Seoul. Stages were classified into Stage 3, 4 and 5 depending on GFR ranges. To measure the levels of knowledge and educational demands, the tool, which were first invented by Young Ae Lim (1996) and then modified by Hyo Sun Lim (2005) to adjust the knowledge and educational demands measuring tool for hemodialysis patients to pre-dialysis patients with chronic renal failure, was used. Collected data was analyzed with the SPSS WIN 12.0 program (average, standard deviation, Pearson's correlation coefficient, t-test and ANOVA). Results: There was a significant difference in the disease-related knowledge levels of the subjects at each stage (F=24.41, p=.000). The Scheffe post hoc test confirmed that patients at higher stages had higher levels of knowledge of their disease. Also, although the results showed that patients at higher stages had higher educational demands, there was no significant difference among the groups (F=1.259, p=.288). Conclusion: As patients have different levels of knowledge of the disease and educational demands depending on their stages, it is important to develop and use a systematic education program that reflects the demands and levels of patients at each stage in order to help pre-dialysis patients with chronic renal failure with self-management and improve their quality of life.

• Korean Journal of Food Science and Technology
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• v.41 no.2
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• pp.117-121
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• 2009

Soybean curd (SC) is prepared through the elimination of water-insoluble components and molding by pressing. However, whole soybean curd (WSC) is made without the elimination of water-insoluble components and pressing. Therefore, it was considered that the components contained in WSC might be different from those in SC and we compared their contents of various components, hardness, and morphological features for this study. Ash, dietary fiber, and niacin contents were significantly higher in WSC than in SC. In addition, the carbohydrate and vitamin $K_1$ contents of WSC tended to be higher than those in SC, whereas the hardness of WSC was lower than that of SC. Moreover, electron microscopic analysis showed that the morphological characteristic of WSC consisted of considerably more fine retiform tissues in comparison to SC. Based on their compared nutrition, functional, and quality characteristics, it was suggested that WSC might be superior to SC.

• Proceedings of the Membrane Society of Korea Conference
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• 1996.04a
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• pp.42-43
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• 1996

고분자 분미막을 이용한 분리기술은 기존의 분리기술에 비하여 에너지의 절약과 높은 분리효율 등의 장점이 있어 거의 모든 산업에 이용되고 있다. 분리막의 용도가 다양화됨에 따라서 내열성, 내약품성, 내유기용매성을 갖는 막소재의 개발이 필요하게 되었다. polyimide(PI)게의 고분자는 물리, 화학적 성능이 우수하고 내열성과 내유기용매성 등이 우수한 열가소성수지로서 film, sheet, tubular형으로 만들 수 있어 한외여과막이나 역삼투막, 기체분리막 등에 이용되고 있다. 그러나 투과속도를 높디고, fouling을 줄이기 위해서는 화학적 개질을 통해 친수성을 높이는 방법이 필요하다. 본 실험에서는 내열성과 내유기용매성이 우수한 polyetherimide계 고분자를 chlorosulfonic acid(CSA)를 이용하여 술폰화시킴으로써, 극성기의 도입에 의해 친수성이 향상된 sulfonated polyetherimide(SPEI)를 합성하였다.

• Journal of Korean Medical classics
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• v.18 no.4 s.31
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• pp.120-133
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• 2005

${\ulcorner}$금궤요약${\lrcorner}$중언급일년십이개월중(中言及一年十二個月中), 매개월도유응금식적식품(每個月都有應禁食的食品). 여정월응금식총(如正月應禁食蔥), 이월응금식수삼(二月應禁食水蔘), 삼월응금식소산등(三月應禁食小蒜等). 저시인위(這是因爲), 여식품적성질상배적월분중진식해식품(與食品的性質相配的月分中進食該食品), 대인체유해(對人體有害). ${\ulcorner}$금궤요약${\lrcorner}$중언급주여비채(中言及酒與菲菜). 생총여봉밀등음식물(生蔥與峰蜜等飮食物), 불가일기식용(不可一起食用). 인해식품약일기식용(因該食品若一起食用), 기식성대인체유해(其食性對人體有害). ${\ulcorner}$금궤요약${\lrcorner}$중언급잉부적음식금기(中言及孕婦的飮食禁忌). 여과다식용순채혹무청근등(如過多食用蓴菜或蕪靑根等), 회사인생병(會使人生病); 약잉부식용생강(若孕婦食用生薑), 이생륙지아(易生六指兒). 종상소술(綜上所述), ${\ulcorner}$금궤요약${\lrcorner}$중언급료다종음식금기(中言及了多種飮食禁忌). 여대야채여곡식적금기상(如對野菜和穀食的禁忌上), 요구일종식품불가장시간식용(要求一種食品不可長時間食用); 양종혹다종식품역불가일기식용(兩種或多種食品亦不可一起食用); 대어잉부(對於孕婦), 혹자여야만등특정시간단(或者如夜晩等特定時間段), 야유불가진식적식품(也有不可進食的食品).

• Journal of Korean Medical classics
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• v.19 no.3
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• pp.1-12
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• 2006

통과분석(通過分析) ${\ulcorner}$금궤요약심전${\lrcorner}$ 습병조문중우재경적주석(濕病條文中尤在涇的注釋), 득출여하결론(得出如下結論). 습사감인(濕邪感人), 시우태양이류인관절(始于太陽而流人關節), 평일사덕불급지인(平日士德不及之人), 역감습사(易感濕邪), 습병(濕病), 무한부작(無寒不作), 여경병비풍불성(如涇病非風不成), 습병지표증시신번동(濕病之表證是身煩疼), 관절동번(關節疼煩); 이증시소변불리(裏證是小便不利), 대변반쾌(大便反快), 습황유우습사외성이기양내울발생(濕黃由于濕邪外盛而其陽內鬱發生). 표증오하발생적홰, 포만(胞滿), 소변불리등증원인시양기내울(小便不利等證原因是陽氣內鬱). 발열(發熱), 일포소극(日哺所劇), 불시여폐양명유관(不是與肺陽明有關), 이시여풍유휴작유관련(而是與風有休作有關聯). 치료외습증적발한법시징징발한(治療外習證的發汗法是徵徵發汗), 불시과도발한(不是過度發汗), 여과발한과도(如果發汗過度), 근거풍사이습사상존(僅去風邪而濕邪尙存). 약풍습재표(若風濕在表), 가이용마황가출탕(可以用痲黃加朮湯), 마황행인의이감초탕이발한(痲黃杏仁薏苡甘草湯以發汗), 약이한출이표허(若已汗出而表虛), 가이용방기황기탕이실표행습, 약표허무열(若表虛無熱), 불가발탕(不可發湯), 소이용계지부자탕이온경산습(所以用桂枝附子湯以溫經散濕), 혹용백출부자탕이보탕행습(或用白朮附子湯以補湯行濕), 약표이지탕구허(若表裏之湯俱虛), 가이용감초부자탕이포중겸발산(可以用甘草附子湯以補中兼發散).

• Journal of Korean Medical classics
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• v.18 no.2 s.29
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• pp.168-189
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• 2005

통과분석(通過分析)${\ulcorner}$금궤요약심전(金櫃要略心典) 장부경락선후병맥증제일(臟腑經絡先後病脈證第一)${\lrcorner}$ 중우재경적주석(中尤在據的注釋), 득출여하결론(得出如下結論): 1. 우재경반대이용오행상생상극이론진행장련분석(尤在濫反對利用五行相生相池理論進行長蓮分析), 인위분석일차성상관관계즉가(認爲分析一次性相關關係卽可). 2. 제창오미적오장체용보사이론(提唱五味的五臟體用補瀉理論) 3. 이흡기정도구분삼초각부위적실송(以吸氣程度區分三焦各部位的實訟) : 미수시상초실(微數是上焦實), 촉시중초실(促是中焦實), 원시하초실(遠是下焦實) 4. 이척부출현부맥(以尺部出現浮脈), 판단위표지리(判斷爲表之裏), 장출현요통배강불능행적증상(將出現腰痛背强不能行的症狀), 여과입리(如果入裏), 장출현(將出現) ‘단기이극’적증상(‘短氣而極’的症狀). 5. 종(從)1-13조문중(條文中) '대사(大邪)'. '소사적주석급(小邪'的注釋及)1-17조문중‘소득’등적주석내용(條文中‘所得’等的注釋內容), 가이간출(可以看出), 우재여불근종(尤在濾不謹從)${\ulcorner}$금궤요약(金櫃要略)${\lrcorner}$, 차근거림상실제내진행주석(且根據臨床實際來進行注釋).