STS304와 S15C 이종마찰압접부의 접합계면 응력해석

오정국,차용훈,성백섭,박창언,김하식,김충환 한국공작기계학회 2002 한국생산제조학회지 Vol.11 No.3

Friction welding has many merits such as energy efficiency, simple processing, etc. but it is difficult to obtain good welding at the welded interfaces and heat affected zone. It is discovered that stress singularity exists at the interfaces and heat affected zone. The computer program based on boundary element method is utilized in this study. A mathematical model is implemented based on results from several experiments performed at and around the welded interfaces and heat affected zone of disimilar metal under static and dynamic loadings. This study is to investigate the characteristics of the deformation and fracture behavior around interfaces for friction welded materials under static tensile load. Also, the stress distribution at the tip of crack is analyzed by using BEM based on Kelvin's solution of 2-dimensional binding zone. The results of BEM are identical with those in case of considering interfaces of both heat affected zone. Also, stress singularity at the tip of interfaces appears when the elastic modulus ration is 1.07.

사마리아 여인(요 4장)의 정체성에 대한 연구

박정식(Jung Sig Park) 한국복음주의신약학회 2008 신약연구 Vol.7 No.3

The purpose of this paper is to find out the identity of Samaritan woman in John 4. The general result of the researches of Johannine scholars about her identity is that she is a sinner and this assertion is to be based on the mention of Jesus to her husband; "you have had five husbands. … not your husband"(John 4:18). She had availed herself liberally of previsions for divorce, but that after all that she had a man who was not legally her husband. But this opinion does not fully consider some important elements of John 4, a social value at first century and Jewish Law that a woman could not divorce her husband. Therefore, for exposing her identity we examine the text according to a socio-historical background of Samaria, a symbolic meaning of well and spring, a social state of a woman who divorced five times, and honor and a shame in a village. In result, she was a woman who was suffered by "levirate law" and after met Jesus she born many believing children.

Prebiotic Food Starch Characteristics and Materialization for “Dodamssal”

Jiyoung Park,Sea-Kwan Oh,Hyun-Jung Chung,Hyun-Jin Park,Hye Young Park,Hye-Sun Choi,Hong-Sig Kim 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10

Resistant starch (RS), a type of prebiotic, presents various functions, such as increasing satiety, improving colon environment, blood sugar and insulin response, and reducing and maintaining weight. Most rice cultivars comprise less than 1% of RS, whereas “Dodamssal” (DDS) contains about 10% in white rice. In this study, we aimed to elucidate the starch characteristics in various rice cultivars with different amylose contents developed by the National Institute of Crop Science and enhance use of RS-containing DDS brown rice as a health-promoting low-glycemic-index (GI) food. Non-digestible starches (NDS) and native starches (NS) were isolated from four rice cultivars: Baegokchal (BOC), Ilmi (IM), Mimyeon (MM), and DDS. MM- and DDS-derived NS showed high amylose and low rapidly digestible starch contents as well as high slowly digestible starch and RS proportions. The BOC, IM, and MM starch crystals showed A-type X-ray diffractometry patterns. However, the DDS granules displayed a C-type crystallinity pattern with a predominant B-type and convex spherical shape. All the IM and BOC starches were hydrolyzed, with no remaining NDS residues. MM and DDS NDS showed longer average amylopectin chain length but lower molecular weight and viscosity than the NS. The DDS starch had the lowest digestibility and highest RS content, showing its potential to prevent obesity and hyperglycemia. Roasting conditions, which increase the RS content in DDS, were explored in the 180∼300°C and 10∼30 min ranges. We compared the intermediate-amylose ‘IM’ and high-amylose ‘Goami4’ and ‘DDS’ cultivars. The IM RS content was not significantly different before and after roasting. The Goami4 RS content was significantly higher before roasting and significantly lower at temperatures above 210°C than that of DDS (P<0.05). The starch hydrolysis index and expected GI (eGI) were higher in the following order: IM, Goami4, and DDS, regardless of the roasting treatment. The sensory evaluation for color, flavor, bitter taste, and sweetness yielded high scores for DDS at 240°C for 10 min and 210°C for 30 min. The results indicate that DDS is a suitable cultivar for low-GI powder meal preparation. Upon analyzing the roasted DDS and 60∼200 mesh-passed brown rice flour (BRF) quality characteristics, the average particle size, hydrolysis index, and eGI showed significantly lower values for DDS than for Ilpumbyeo (P<0.05). The DDS RS content was 13% regardless of standard sieve or particle size. Therefore, we concluded that DDS is a valuable health food, as it is easily ground evenly when processed into BRF, contains RS, and has a low eGI. To improve the DDS BRF quality and establish the processing protocol, we steamed rough rice (SRRD) and brown rice (SBRD) for 30 min, then dried and roasted them at 240°C for 10 min. The particle size, crystallinity, thermal properties, RS content, and BRF digestion rate were compared with those of similarly treated IM (SRRI) and single-roasted DDS (RD). In the case of SRRI and SBRD, exhibiting a high order of gelatinization degree, significant differences with large average particle size, high digestion rate, and eGI, as well as low RS content were observed (P<0.05). SRRD showed significant differences in the fine powder particle distribution range with the highest proportion, RS content, and low eGI, although the gelatinization degree increased compared with RD (P<0.05). Therefore, SRRD, with improved BRF quality, could be potentially used as a carbohydrate source for developing functional powdered food for health improvement.

요한복음 1:19-51에 나타난 네 증인의 증언들

박정식(Park, Jung Sig) 한국복음주의신약학회 2010 신약연구 Vol.9 No.2

John 1:19-51 deals with four witnesses, John Baptist, Andrew, Philip, and Nathanael who testimonies the identity of the Logos that is mentioned in John's Prologue (1:1-18). These characters is employed to clearly disclose Jesus' various identities, "the Lamb of God, who takes away the sin of the world" (1:29), "the Messiah" (1:41), the one Moses wrote about in the Law, and about whom the prophets also wrote (1:45), "the Son of God… the King of Israel" (1:49). These Christological titles predict the purpose, the aim and the direction of Jesus'ministry that are mentioned throughout the whole Gospel. For disclosing four witnesses' purposes androles, we used a rhetorical structural analysis and exegeses. The structure of four witnesses has same form, guider who introduces Jesus to a character, the spiritual encounter between the witness and Jesus, testimony about Jesus as eyewitness, and propagation to another people for making another eyewitness. Nathanael who is the last witness in John 1 also testimonies Jesus'identity as the eyewitness but does not have propagation to another people. This reason is that the author of the Gospel demands us to become witnesses and to confess Jesus as the "Son of Man" that is Jesus' self-declarative title.

새로운 출생을 위한 니고데모의 역할(요 3:1-21)

박정식 ( Jung Sig Park ) 개혁주의생명신학회 2011 생명과 말씀 Vol.4 No.-

요한복음에 등장하는 인물들은 예수 그리스도의 정체성을 증거하거나 중요한 신학적인 주제들을 세우는데 그 역할을 담당한다. 니고데모 역시 예수님과의 대화를 통해 그를 통하여 세우려는 독특한 사명을 가지고 요한복음 3장에 등장하였다. 그러므로 이 논문은 니고데모의독특한 역할이 무엇인가를 밝혀내기 위해 예수님과의 대화 가운데 핵심 주제들을 그의 사회. 종교적인 배경에 근거하여 분석하였다. 니고데모의 혈연적인 배경은 유대인이고, 사회적 배경은 산헤드린 의원이며, 종교적 배경은 유대교를 이끌고 가는 가장 중요한 종파인 바리새인이며 더 나아가 그들을 가르치고 본이되는 삶을 살아야 하는 랍비지만 새로운 출생조차도 알지 못하는 무지한 사람이었다. 니고데모에 대한 인물 소개와 그의 영적인 무지는 유대인의 대표자로 유형화 시켰으며 또한 예수님을 만남으로 물과 성령에 의해 새로운 출생의 비밀을 깨닫게 되어서 유대인의 종말론적 소망인 메시아 왕국 즉 하나님 나라에 들어가게 되는 것 역시 유대인에게 임한 구원의 대표자가 된다. 예수님과 니고데모의 대화는 제2성전기 유대교에서 신학적인 난제가 되었던 다양한 주제들에 대해 심각하게 토론한다. 요한복음 3장 전반부에서 다뤄진 위로부터 주어지는 출생(a ;nwqen), 물과 성령에 의한출생, 두가지 출생인 육체적인 출생과 영적인 출생의 관계, 메시아의 오심, 하나님 나라에 들어감, 인자의 구원, 그리고 영생이 그것이며 니고데모는 참 랍비이신 예수님을 통해 이 문제들을 해결하게 된다. 그러므로 니고데모의 역할은 첫째, 예수께서 유대인의 구원자와 하나님 나라를 가져오시는 분으로 드러내는 것이고, 둘째, 물과 성령으로 위로부터 출생하여 영생을 얻는 비밀을 효과적으로 제시하는 것이다. The characters of John``s Gospel aresketched to testimony an identity about Jesus the Christ or to build some main theological themes, Nicodemus is also portrayed to accomplisha specific mission throughout a discussion between Jesus and him in John 3. Therefore, this article researchesfor his socio-religious background and analyzes some key themes in John``s Gospel 3:1-21 to disclose Nicodemus`` characteristic role. Even though, his racial background is Jew, his social position is a member of the Sanhedrin assembly, and religious status is the Pharisees who is a sect of Judaism to guide the Jews and he is a rabbi who teachs and guides to the God and who is a religious model in secular life, but he is an spiritual ignorant personin a new birth perspective. Some introductions about Nicodemus and his spiritual illiteracy make him as a typical formula for Judeans. He who knows a secret to bear through water and the Holy Spiritand who enters the messianic kingdom, the kingdom of God that is all Jews`` eschatological expectation also become a representative for salvation of Jews, The discussion between Jesus and Nicodemus deals with some various theological difficult problems in the second temple period. In John 3:1-21 there are many themes to solve the problems of Nicodemus; the birth from above(3:3, a ;nwqen), the birth by water and the Holy Spirit(3:5), the differentiation between birth by flesh or spirit(3:6), the coming of Messiah(3:16), the entering to the kingdom of God(3:3), the salvation by the Son of Man(3:14). In this article, Nicodemus are in charge oftworoles; firstly, he discloses Jesus identities as the Jews`` savior and as the man who brings the kingdom of God on the earth and secondly, he effectively exhibits a secret to enter the eternal life by the water and the Holy Spirit.

일부 실내공간에서 PM10과 CO₂의 농도 특성에 관한 연구

정준식(Jung, Joon-sig),박덕신(Park, Duck-Shin),김종범(Kim, Jong bum),송혜숙(Song, Hyea-suk),박형규(Park, Hyung-kyu) 한국산학기술학회 2015 한국산학기술학회논문지 Vol.16 No.6

본 연구에서는 2008년 8월부터 2012년 12월 까지 경기도 수원, 안산, 화성 등 초등학교 286곳을 대상으로 교실에서의 PM10 및 CO₂ 농도 현황을 조사하고, 환경적 특성을 파악하여 초등학교 학생들의 건강에 영향을 미치는 학교 실내공기질의 관리 방안으로 활용하고자 한다. 초등학교를 지역별로 구분하여 PM10 농도를 조사한 결과, 통계적으로 유의한 차이를 보이진 않았다. 그러나 지리적 특성에 따라 상대적으로 공단지역에서는 높은 농도를 보였으며, 농촌지역에서는 낮은 농도를 보였다. CO₂ 농도는 각 지역 간 농도 차이는 없는 것으로 나타났다. 연도별 PM10 농도를 분석한 결과, 수원은 2008년, 화성은 2009년에 가장 높은 농도로 나타났다(p<0.01). 안산지역은 2009년에 가장 높은 농도를 보였으나, 유의한 차이를 보이지 않았다. 각 지역 의 연도별 CO₂의 농도를 분석한 결과, 유의한 차이를 보이지 않는 것으로 분석 되었다(p-value = 0.366, 0.730, 0.210). 2008년 가을부터 2012년 겨울까지 PM10와 CO₂의 계절별 시계열 분석 결과, PM10의 경우는 2009년에 높게 나타났으며, 점차적으로 감소하는 경향을 보이다가 2012년에 다시 높아지는 경향을 보였다. CO₂는 연도별로 차이가 없는 것으로 나타났으나, 계절별로 는 봄과 겨울기간이 여름철보다 농도가 높아지는 경향을 나타내었다. PM10과 CO₂, 건축년도, 학급 평균 인원, 온도, 습도와의 상관성을 분석한 결과, CO₂와 환경적 요인인 온도, 습도와 상관성은 각 -0.329, -0.188로 유의한 음의 상관성을 보였다(p< 0.01) The objective of this study was to investigate PM10 and CO₂ concentrations in the classrooms of 286 elementary schools in Suwon, Ansan, and Hwaseong in the province of Gyeonggi between August 2008 and December 2012. By gaining an understanding of the environmental factors that influence these concentrations, this study also aimed to establish a management plan for indoor air quality in schools, which substantially affects the health of elementary students. When the schools were classified by region, no statistically significant difference in PM10 concentration was observed. However, PM10 concentration was relatively high in industrial areas and low in rural areas. No difference in CO₂ concentration was observed among the surveyed cities. Analysis of annual PM10 concentration showed that the highest values for Suwon and Hwaseong occurred in 2008 and 2009, respectively (p<0.01). In the case of Ansan, the highest concentration occurred during 2009, but the difference was not significant compared to the other years. Analysis of the annual CO₂ concentration of each city shows no significant difference among the cities (p-value=0.366,0.730,0.210). According to a time series analysis of PM10 and CO₂ by season, from autumn 2008 to winter 2012, PM10 concentration was high during 2009, then it gradually decreased until 2012, and started to increase again. While no difference in annual CO₂ concentration was observed, the concentration had a tendency to be higher in spring and winter than in summer. By analyzing the relationship between PM10 and CO₂ and the environmental factors (years of construction, average students of classroom, temperature, and humidity), it showed a significant negative correlation was found between CO₂ and the environmental temperature and humidity, at ?0.329 and ?0.188, respectively (p<0.01).

Development and Assessment of an ICT-Based Non-Face-to-Face Lifestyle Program to Improve the Mental Health of Older Adults: A Pilot Study

이혜식 (Hey Sig Lee),박혜연(Hae Yean Park),정민예(Min-Ye Jung),박지혁(Ji-Hyuk Park),홍익표(Ickpyo Hong),김정란(Jung-Ran Kim) 대한신경계작업치료학회 2024 재활치료과학 Vol.13 No.1

목적 : 본 연구에서는 정보통신기술(information and communication technology, ICT) 기반의 고령자를위한 비대면 라이프스타일 프로그램을 개발하고 그 적용 가능성을 평가하였다. 연구방법 : 본 프로그램은 분석, 설계, 개발, 구현 및 평가 5단계로 구성된 ADDIE 모델을 기반으로 개발되었다. 5단계의 연구과정 동안 8단계를 거쳐 최종적으로 지역사회 고령자들을 대상으로 비대면 라이프스타일 프로그램이 수행되었다. 결과 : 프로그램 분석 결과, 대상자들의 우울 증상과 외로움이 유의하게 감소한 것으로 나타났고 삶의질 점수가 증가함을 확인할 수 있었다. 결론 : 본 연구를 통해 개발된 ICT 기반의 비대면 라이프스타일 프로그램은 고령자들이 성공적인 노화를위한 생활 방식을 더 잘 이해하도록 동기부여하는 데 도움이 되었다. Objective : This study aimed to develop an information and communication technology (ICT)-based, non-face-to-face lifestyle program for older adults and assess its applicability. Methods : The program was developed on the basis of the ADDIE model which comprises 5 stages: analysis, design, development, implementation, and evaluation. In this study, a step-by-step identification was performed in 8 stages. Results : The results of the program analysis showed a significant decrease in depressive symptoms and loneliness scores, and an increased quality of life scores. Conclusion : The findings suggest that the ICT-based non-face-to-face lifestyle program developed in this study can motivate older adults to better understand their lifestyles for successful aging, while helping senior citizen centers resume stagnant projects.

Late target lesion revascularization after implantation of sirolimus-eluting stent

Hong, Myeong-Ki,Mintz, Gary S.,Lee, Cheol Whan,Park, Duk-Woo,Lee, Seung-Whan,Kim, Young-Hak,Jung, In-Hyun,Kim, Sang-Hyun,Cheong, Sang-Sig,Kim, Jae-Joong,Park, Seong-Wook,Park, Seung-Jung Wiley Subscription Services, Inc., A Wiley Company 2008 CATHETERIZATION AND CARDIOVASCULAR INTERVENTIONS Vol.71 No.3

<P>Objectives: We evaluated the incidence, clinical presentation, and angiographic in-stent restenosis (ISR) pattern of late target lesion revascularization (TLR) after sirolimus-eluting stent (SES) implantation. Background: Late TLR is an unusual finding beyond 6–9 months after bare-metal stent implantation. However, late TLR after SES implantation has not been sufficiently evaluated. Methods: The study population consisted of 804 patients with 1,020 native lesions that were patent at 6-month follow-up angiogram after SES implantation. Results: Late TLR was performed in 18 patients with 18 lesions (1.8%) at 24.1 ± 2.6 months (range; 18–30 months) after SES implantation. Clinical presentation of late TLR patients was silent ischemia in eight patients and recurrent angina in 10 patients, but none had an acute coronary syndrome. Angiographic ISR pattern of late TLR lesions were focal ISR in 12 lesions (67%) and diffuse ISR in six lesions (33%). Serial quantitative coronary angiographic analysis of these lesions showed a minimal lumen diameter of 2.6 ± 0.5 mm immediately after SES implantation, 2.4 ± 0.4 mm at 6-month follow-up and 0.7 ± 0.6 mm at 24-month follow-up (ANOVA P < 0.001). By stepwise multiple logistic regression analysis, the only independent predictor of late TLR was stent length (P < 0.001, OR = 1.040, 95% CI = 1.019–1.061). Conclusions: Late TLR was performed in 1.8% of 1,020 native lesions that were patent at 6-month follow-up angiogram. Clinical presentations of late TLR was either silent ischemia or recurrent angina, but not acute coronary syndrome. Two-thirds of late TLR lesions had a focal angiographic ISR pattern. © 2007 Wiley-Liss, Inc.</P>

Intravascular ultrasound predictors of angiographic restenosis after sirolimus-eluting stent implantation.

Hong, Myeong-Ki,Mintz, Gary S,Lee, Cheol Whan,Park, Duk-Woo,Choi, Bong-Ryong,Park, Kyoung-Ha,Kim, Young-Hak,Cheong, Sang-Sig,Song, Jae-Kwan,Kim, Jae-Joong,Park, Seong-Wook,Park, Seung-Jung W.B. Saunders [etc.] 2006 European heart journal Vol.27 No.11

<P>AIMS: In many countries, drug-eluting stent implantation is the dominant interventional strategy. We evaluated the clinical, angiographic, procedural, and intravascular ultrasound (IVUS) predictors of angiographic restenosis after sirolimus-eluting stent (SES) implantation. METHODS AND RESULTS: SES implantation was successfully performed in 550 patients with 670 native coronary lesions. Six-month follow-up angiography was performed in 449 patients (81.6%) with 543 lesions (81.1%). Clinical, angiographic, procedural, and IVUS predictors of restenosis were determined. Using multivariable logistic regression analysis, the only independent predictors of angiographic restenosis were post-procedural final minimum stent area by IVUS [odds ratio (OR)=0.586, 95% confidence interval (CI) 0.387-0.888, P=0.012] and IVUS-measured stent length (OR=1.029, 95% CI 1.002-1.056, P=0.035). Final minimum stent area by IVUS and IVUS-measured stent length that best separated restenosis from non-restenosis were 5.5 mm2 and 40 mm, respectively. Lesions with final minimum stent area<5.5 mm2 and stent length>40 mm had the highest rate of angiographic restenosis [17.7% (11/62)], P<0.001 compared with other groups. CONCLUSION: Independent predictors of angiographic restenosis after SES implantation were post-procedural final minimum stent area by IVUS and IVUS-measured stent length. The angiographic restenosis rate was highest in lesions with stent area<5.5 mm2 and stent length>40 mm.</P>

저나트륨 혈증의 급속교정후 일시적인 회복후에 발생한 삼투성 탈수초 증후군

박동우,이명호,김호중,박근태,한상웅,이영주,민경환,노우균,문희식 대한신장학회 1998 Kidney Research and Clinical Practice Vol.17 No.4

In literatures, most of the studies of severe hyponatremia during or following its treatment has been concentrated with special references to the rate of correction and its neurologic outcomes. But, there is relatively few ones analyzing the diverse clinical manifestations of neurologic symptorns or complications during the course of treating severe hyponatremia. We experienced a catastrophic course related to hyponatremia in a 51 year woman with severe rheumatoid arthritis, who underwent knee joint replacement, and this case revealed the initial transient neurologic recovery for 3 days by the initial rapid correction of hyponatremia, then followed by delayed deterioration of osmotic demyelination syndrome leading to locked-in syndrome. Reported cases with similar clinical course(biphasic course) in the world lituratures were reviewed with special interests in the initial maximum rate of correction of hyponatremia and radiologic findings. This review suggests that clinicians treating the patients with severe symptomatic hyponatremia should be aware of the possibility of delayed neurologic sequelae despite the recovery of neurologic status as well as the degree of hyponatremia in the early treatment course of hyponatremia.