코로나 19로 인한 부모의 가정보육 경험에 관한 연구

석민아(Seok, Min-Ah),문인경(Moon, In-Kyung),이병호(Lee, Byung-Ho) 한국열린유아교육학회 2021 열린유아교육연구 Vol.26 No.3

웹 기반의 원격 호흡운동 프로그램이 대학생의 폐기능과 호흡 근력에 미치는 영향

구본 ( Bon Gu ),김수정 ( Soo-jeong Kim ),김현균 ( Hyun-kyun Kim ),석민정 ( Min-jeong Seok ),이승민 ( Seung-min Lee ),이지윤 ( Ji-yoon Lee ),장서연 ( Seo-yeon Jang ),진솔 ( Sol Jin ),최희재 ( Hee-jae Choi ),한바다 ( Ba-da Han ),손 대한신경치료학회 2021 신경치료 Vol.25 No.3

Purpose The purpose of this study was effect of web-based remote breathing exercise on pulmonary function and respiratory strength. Methods A total of 30 students were assigned to 15 in study groups and 15 in control groups. Exercise was performed 3 times a week for a total of 12 times for 4 weeks. Both groups applied an exercise program included breathing exercise and whole body exercise. Results As a result of pulmonary function, there was no significant difference in the study group, and there was a significant difference in the control group for FEV₁, FEV₁/FVC, PEF. Both groups showed significant differences in MEP and MIP for respiratory muscle strength. However, there were no significant differences between groups in all items. Conclusion Breathing exercises help to improve pulmonary function and respiratory muscle strength. In particular, remote breathing exercise can be an alternative that can help improve respiratory muscle strength of non-face-to-face social university students with low activity levels.

소아 영양 및 유아식 응용을 위한 신바이오틱스의 잠재력: 총설

정후길 ( Hoo Kil Jung ),김선진 ( Sun Jin Kim ),석민정 ( Min Jeong Seok ),차현아 ( Hyun Ah Cha ),윤슬기 ( Seul Ki Yoon ),이나현 ( Nah Hyun Lee ),강경진 ( Kyung Jin Kang ) 한국유가공기술과학회 2015 Journal of Dairy Science and Biotechnology (JMSB) Vol.33 No.2

프로바이오틱스, 프리바이오틱스 및 신바이오틱스 등의 물질과 미생물을 조제분유에 강화하여 건강증진 기능성 유산균, 특히 비피더스균과 유산간균의 성장을 선택적으로 자극함으로써 장내균총에 유익한 효과를 나타내고자 하는 노력이 경주되고 있다. 지난 10년 동안, 모유 수유가 장내균총에 미치는 유용 효과를 도모하기 위해서 프로바이오틱스와 프리바이오틱스를 함유하는 새로운 신바이오틱 조제분유가 제안되었다. 새로운 신바이오틱스는 상승 효과로 인해서 프로바이오틱스 및 프리바이오틱스를 개별적으로 사용하는 경우보다 더 도움이 되는 것으로 기대된다. 한편, 조제분유 및 건조 제품의 제조에 사용되는 가공 기술 및 저장 조건 등이 프로바이오틱스의 생존에 악영향을 미치게 된다. 충분한 유산균수(108 cfu/g)로 장내 예정된 부위에 도달하여 숙주에 긍정적인 효과를 나타내기 위해서는 식품제조공정 및 위장관 통과 시 프로바이오틱스의 생존성을 유지하는 것이 가장 중요한 요소이다. 일반적으로 안전하다고 인정되며, 높은 생물학적 가치를 가지고 있는 물질을 이용하여 적절하고 비용 효율적인 마이크로캡슐화 기술이 개발되면 조제분유의 품질 향상이 가능하게 된다. 프로바이오틱스는 복합적인 효과를 나타낸다. 하나는 살아 있는 생균체가 장내균총에 유익하게 영향을 미쳐 면역조절 효과를 보여주는 것이며, 다른 하나는 사균체가 항-염증반응을 나타내는 것이다. 최근에, 사균체 또는 정제되지 않은 미생물 분획물이 건강에 긍정적인 영향을 미친다는 것을 명확하게 정의할 새로운 용어에 대한 필요성이 대두되었다. 그결과, 충분한 양을 경구 또는 국소적으로 투여했을 때 인간과 동물에게 이로운 작용을 하는 사균체(손상되지 않거나 또는 파손된)나 정제되지 않은 세포 추출물(즉, 복잡한 화학적 조성)을 정의하기 위해 paraprobiotics라는 용어가 제안되었다. 프로바이오틱 균주 또는 프리바이오틱스를 조제분유에 강화했을 때 조제분유 수유아의 분변 미생물균총이 조정된다. 즉, 비피더스균 및 유산간균과 같은 건강 유익한 세균을 증가시킴으로써, 프리바이오틱스는 분변 미생물균총의 조성을 변경하고, 이에 따라서 면역계의 활성을 조절한다. 따라서, 품질 향상을 위한 조제분유의 개발은 토착 장내균총의 대사 활성과 증식을 선택적으로 자극하는 비피더스균 등의 특정 프로바이오틱스 및 이눌린과 올리고당 등의 프리바이오틱스를 사용하여, 모유의 건강 유용 효과와 유사하게 접근하는 것에 초점을 맞추고 있다. Probiotic, prebiotic, and synbiotic substances as well as microorganisms were added to infant formula in an attempt to influence the intestinal microflora with an aim to stimulate the growth of lactic acid bacteria, especially bifidobacteria and lactobacilli. Over the last 10 years, new synbiotic infant formulas containing probiotics and prebiotics have been proposed in order to simulate the effect of breast-feeding on the intestinal microflora. Owing to their synergistic effect, the new synbiotics are expected to be more helpful than using probiotics and prebiotics individually. Maintenance of the viability of the probiotics during food processing and the passage through the gastrointestinal tract should be the most important consideration, since a sufficient number of bacteria (108 cfu/g) should reach the intended location to have a positive effect on the host. Storage conditions and the processing technology used for the manufacture of products such as infant formula adversely affect the viability of the probiotics. When an appropriate and cost-effective microencapsulation methodology using the generally recognized as safe (GRAS) status and substances with high biological value are developed, the quality of infant formulas would improve. The effect of probiotics may be called a double-effect, where one is an immunomodulatory effect, induced by live probiotics that advantageously alter the gastrointestinal microflora, and the other comprises anti-inflammatory responses elicited by dead cells. At present, a new terminology is required to define the dead microorganisms or crude microbial fractions that positively affect health. The term “paraprobiotics” (or ghost probiotics) has been proposed to define dead microbial cells (not damaged or broken) or crude cell extracts (i.e., cell extracts with complex chemical composition) that are beneficial to humans and animals when a sufficient amount is orally or topically administered. The fecal microflora of bottle-fed infants is altered when the milk-based infant formula is supplemented with probiotics or prebiotics. Thus, by increasing the proportion of beneficial bacteria such as bifidobacteria and lactobacilli, prebiotics modify the fecal microbial composition and accordingly regulate the activity of the immune system. Therefore, considerable attention has been focused on the improvement of infant formula quality such that its beneficial effects are comparable to those of human milk, using prebiotics such as inulin and oligosaccharides and potential specific probiotics such as bifidobacteria, which selectively stimulate the proliferation of beneficial bacteria in the microflora and the indigenous intestinal metabolic activity of the microflora.

건조방법에 따른 매생이의 이화학적 성분

손석민(Seok Min Son),권한올(Han Ol Kwon),이준호(Jun Ho Lee) 한국식품영양과학회 2011 한국식품영양과학회지 Vol.40 No.11

매생이를 열풍, 진공 및 동결건조법을 이용해 건조하고 이들 건조방법이 건조 매생이의 이화학적 성분에 미치는 영향을 조사하였다. 일반성분 중 가장 많이 함유하고 있는 성분은 건조방법과 무관하게 탄수화물(38.10~41.54%)이었으며, 다음으로 조회분(31.86~33.28%), 조단백질(17.46~23.03 %), 수분(4.14~6.25%) 및 조지방(1.01~1.51%) 순으로 나타났다. 열풍건조 시료의 총당 함량이 19.53%로 가장 높게 나타났으며(p<0.05), 다음으로 진공건조 시료가 19.22%, 동결건조 시료가 18.18% 순으로 나타났다. 열풍건조 시료의 비타민 C 함량은 진공건조 시료와 유의적인 차이가 없었지 만(p>0.05), 동결건조 시료보다는 유의적으로 낮은 값을 나타내었다(p<0.05). 열풍건조 시료 중 가장 많이 함유하고 있는 아미노산은 glutamic acid, 다음으로 proline, aspartic acid 순으로 나타났고, 이들 세 가지 구성아미노산의 합은 건조방법에 따라 전체 아미노산의 33.34~34.80%를 차지하고 있는 것으로 나타났다. 매생이 건조방법별 무기성분 총 함량은 열풍 및 진공건조 시료가 동결건조 시료보다 월등히 많은 무기성분을 함유하고 있는 것으로 나타났다(p<0.05). 또한 다량 함유하고 있는 무기성분은 건조방법과 무관하게 Na, K, Mg, Ca, P 순으로 나타났고 그 밖에 미량 무기성분으로 Fe, Mn, Zn, Cu 등을 함유하고 있는 것으로 나타났다. Caposiphon fulvescens was dried by the hot-air (50oC), vacuum (50oC), and freeze drying methods. The green alga contained high proportions of carbohydrates (38.10~41.54%), ash (31.86~33.28%), and crude proteins (17.46~23.03%) regardless of the drying methods used to prepare the sample. The total sugar contents of the hot-air and vacuum dried samples were higher than that of the freeze dried sample (p<0.05). Vitamin C content of the freeze dried sample was higher than that of either the hot-air or vacuum dried samples (p<0.05). The major amino acids were glutamic acid, proline, and aspartic acid, which amounted to 33.34~34.80% of the total amino acid content depending on the drying methods used. Total mineral content of either the hot-air or vacuum dried samples was significantly higher than that of the freeze dried sample (p<0.05). Regardless of the drying methods, Na, K, Mg, Ca, and P were the most abundant elements in the samples while trace elements were identified as Fe, Mn, Zn, and Cu.

Lung RPO 선량전달시, Carbon Couch Side Rail과 Vac-lok이 미치는 영향

김석민,곽근탁,이승훈,김정수,권형철,김양수,이선영,Kim, Seok Min,Gwak, Geun Tak,Lee, Seung Hun,Kim, Jung Soo,Kwon, Hyoung Cheol,Kim, Yang Su,Lee, Sun Young 대한방사선치료학회 2018 대한방사선치료학회지 Vol.30 No.1

목 적 : 폐의 우측후사방향 선량전달시, Carbon Side Rail과 환자 고정기구인 Vac-lok이 미치는 영향을 보고자 한다. 대상 및 방법 : Vac-lok의 오른쪽 부분을 10, 20, 30 mm 두께로 제작하였다. 측정은 유리선량계를 이용하여 측정하였고, 측정점은 팬텀 우측 폐의 center Point를 기준으로 좌, 우, 하, 상 방향 각각 A, B, C, D Point로 설정 하였다. 각 point에 유리선량계를 삽입한 후 couch의 Side Rail을 외측(Out)으로 뺀 후 vac-lok을 놓지 않은 no vac-lok, 그리고 10, 20, 30 mm의 vac-lok 위에 팬텀을 세팅하였다. 중심점에 6 MV 광자선을 조사야 $10{\times}10cm^2$, SAD 100 cm, 겐트리 각도 $225^{\circ}$로 하여 300 MU/min 선량률과 100 MU 조사선량을 전달하였다. 측정은 5회씩 실시하였고, 마찬가지로 Side Rail을 내측(In)으로 넣은 후 각 point에 대해서도 같은 조건으로 5 회씩 측정하여 평균값을 산출하였다. 결 과 : side rail에 따라서는 중심점, A, B, C, D Point 각각 -11.8 %, -12.3 %, -4.1 %, -12.3 %, -7.3 %의 선량 감소를 보였다. Side-Rail-Out에서 10 mm vac-lok의 경우 약 -0.9 %가 감소되었고, 20 mm vac-lok 사용 시 약 -2.0 %, 30 mm vac-lock 사용 시 약 -3.0 %가 감소되었다. Side-Rail-In에서 10 mm vac-lok의 경우 약 -1.0 %가 감소되었고, 20 mm vac-lok 사용 시 약 -2.1 %, 30 mm vac-lok 사용 시 약 -3.0 %가 감소되었다. Side-Rail-In 상태의 no vac-lok 선량 값을 기준으로 Side-Rail-Out 상태의 10, 20, 30 mm vac-lok을 사용할 때, side rail에 대한 선량 감소에 더하여 중심점에서는 약 -0.9 %, -1.8 % -2.4 %, A point에서는 -0.5 %, -1.6 %, -2.1 %, B point에서는 약 -0.9 %, -2.0 %, -3.2 %, C Point에서는 -1.0 %, -2.1 %, -3.1 %, D point에서는 약 -1.0 %, -1.6 %, -3.1 %의 추가적인 선량 감소를 나타냈다. 결 론 : 폐를 비롯한 우측후사방향 방사선 치료 시 side rail에 대해 주의를 기울이고, vac-lok 제작 시 vaclok 두께에 대해 관심을 갖는다면 더 나은 치료 효과를 기대해 볼 수 있으리라 사료된다. Purpose : To evaluate the effect of carbon couch side rail and vacuum immobilization device in case of lung RPO irradiation. Materials and Methods : The 10, 20, 30 mm thickness of vac-lok's right side were obtained. To measure of doses, glass dosimeters were used and measured reference point is left lung center at the phantom. A, B, C, and D points are left, right, down, and up directions based on the center point. In the state of Side-Rail-Out, place the without vac-lok, with the thickness of 10, 20, and 30 mm vac-lok. After the glass dosimeters was inserted in center, A, B, C, and D points, 100 MU of 6 MV X-ray were irradiated to the referenced center point in the condition of $10{\times}10cm^2$ field size, SAD 100 cm, gantry angle 225, 300 MU/min dose rate. Five measurements were made for each point. In the state of Side-Rail-In, five measurement were made for each point under the same conditions. The average is measured on each of the five Side-Rail-Out and Side-Rail-In measurements. Results : In the presence of side rail, the dose reduction ratio was -11.8 %, -12.3 %, -4.1 %, -12.3 %, -7.3 % for each A, B, C, and D points. In the state of Side-Rail-Out, the dose reduction ratio for the using 10 mm thickness of vac-lok was -0.9 % than without vac-lok. The dose reduction ratio for the using 20 mm thickness of vac-lok was -2.0 %, for the using 30 mm thickness of the vac-lok was -3.0 % than without vac-lok. In the state of Side-Rail-In, the dose reduction ratio for the using 10 mm thickness of vac-lok was -1.0 % than without vac-lok. The dose reduction ratio for the using 20 mm vac-lok was -2.1 %, for the using 30 mm vac-lok was -3.0 % than without vac-lok. Based on the value of no vac-lok dose in the Side-Rail-In state, The dose reduction ratios for the using 10 mm, 20 mm and 30 mm thickness of vac-loks In the Side-Rail-Out that the center point were -12.7 %, -13.7 %, -14.2 % and -12.8 %, -13.8 %, -14.5 % respectively at point A. The dose reduction ratios for the same conditions to the B point were -4.9 %, -6.1 %, -7.1 % and -13.4 %, -14.4 %, -15.5 % respectively at point C. The dose reduction ratios for the same conditions to the D point were -8.4 %, -9.0 %, -10.4 % respectively. Conclusion : The attenuation was caused by presence of side rails and thickness of vac-lok. Pay attention to these attenuation factors, making it a more effective radiation therapy.

지역사회(地域社會)에 개방(開放)된 학교도서관(學校圖書館)의 건축계획(建築計劃)에 관(關)한 연구(硏究) - 서울지역 초.중.고등학교를 중심으로 -

이석민,황희준,Lee, Seok-Min,Whang, Hee-Joon 한국교육시설학회 2011 敎育施設 Vol.18 No.6

The Educational facilities is accomplishing the role as the community facilities through various programs that the culture leisure long-life education facilities etc. But The local residents do not use that facilities which is opened in the community actually well. Because it does not consider the various things that convenient for resident users who is not student. With sameness, School library which is opened to local community can not expect as a Public library with modem library services. The purpose of this study is propose the direction of architectural plan that must be considered for the sufficient role the School library which is opened to local community as the Public library.

다중 효용 확산 태양열 담수기의 최적 모델 선정 및 경제성 분석

최석민(Seok-Min Choi),임병주(Byung-Ju Lim),이가람(Ga-Ram Lee),조성훈(Sung-Hoon Cho),박창대(Chang-Dae Park) 한국태양에너지학회 2020 한국태양에너지학회 학술대회논문집 Vol.2020 No.6

AI 기반 쿨링 타워의 온·습도 예측 시스템

김석민(Seok-min Kim),김성호(Seong-ho Kim),박경태(Kyung-tae Park),박철우(Cheol-woo Park),이영우(Young-woo Lee) 한국정보통신학회 2023 한국정보통신학회 종합학술대회 논문집 Vol.27 No.1

IQF 굴( Crassostrea gigas ) 복합엑스분의 추출 및 풍미개선

황석민 ( Seok Min Hwang ),황영숙 ( Young Suk Hwang ),남현규 ( Hyeon Gyu Nam ),이재동 ( Jae Dong Lee ),류성귀 ( Seong Gwi Ryu ),오광수 ( Kwang Soo Oh ) 한국수산과학회 2014 한국수산과학회지 Vol.47 No.6

To develop an effective use for poor-quality individually quick-frozen (IQF) oysters Crassostrea gigas stored for a long period, the extract conditions, quality characteristics, and optimum reaction flavoring (RF) conditions of a complex extract from these IQF oysters were investigated. The moisture, pH, and volatile basic nitrogen contents of IQF oysters stored for 18 months (18M-IQFO) were 77.9%, 6.32, and 17.9 mg/100 g, respectively. Three different kinds of extract were prepared from 18M-IQFO: a hot-water extract (HE), scrap enzymatic hydrolysate (EH), and complex extract (CE). The respective extracts contained 5.5, 8.6, and 6.6% crude protein and 281.7, 366.0, and 343.0 mg/100 g amino nitrogen, and had 811, 359, and 1,170 mL/kg extraction yields. The CE was superior to the traditional HE in terms of the extraction yield, amino-nitrogen content, and organoleptic qualities, except for the odor. To improve flavor via the Maillard reaction, the reaction system used to produce a desirable flavor comprised CE (Brix 30°), 0.4 M glucose, 0.4 M glycine, and 0.4 M cysteine solution (4:2:1:1, v/v). The reaction time and pH were the independent variables, and the sensory scores for baked potato odor, masking shellfish odor, and boiled meat odor were the dependent variables. The surface response methodology (RSM) analysis of the multiple responses optimization gave a reaction time of 120.6 minutes and pH 7.33 at 120°C. The reaction improved the flavor of CE considerably, as compared to that of the unreacted extract.

유지보수성과 환경운용성을 개선한 야전시험장비에 대한 연구

이석민(Seok-Min Lee) 한국컴퓨터정보학회 2018 韓國컴퓨터情報學會論文誌 Vol.23 No.3

In this paper, I purpose one of the development methods for portable Automatic field Test Equipment(ATE) with VME form factor. Almost portable ATE have not used to standards form factor and they are connected by mechanical non-rigid general connectors and wire harnesses among the components. Furthermore, it is hard to reuse developed board. So, it decreases to reusability of developed board and it is hard to maintenance of ATE. Even those things have weakness for vibration and drop test especially in portable ATE. The XK9A1 ATE using VME form factor has environmental reliability through vibration, drop, temperature test. It consists of 5 developed board called the control board, the wire & wireless communication board, the power supply board, the load board and the mother board. It is connected by two wire harnesses between mother board and extern circular connectors. The control board send the data and address to other board though each 16-bit data and 20-bit address line. You can develop the function board what you want to using those data & address line when it comes to needing other function board.