• 혜화의학회지
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• 제21권2호
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• pp.21-36
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• 2013

Jeol-sik, (festive seasons every 15 days based on sun cycle), refers to both Korean Traditional Festival food(jeol-sik), intertwined between months, and in-season meals(si-jeol-sik) in which the ingredients used are produced in each and one of the four season. Si-jeol-sik is a kind of recommendatory food, which is combined to seasonal changes. I found that ingredients in Si-jeol-sik of spring are helpful for strengthening one's life force. Moreover, the ingredients also reflects seasonal changes. The main ingredient of Si-jeol-sik in January(in lunar year) is rice. Rice is good for upgrading one's stomach qi(energy). Rice continues to be used in February. In addition, some greens are included in February Si-jeol-sik as to help defecation. In March, the ingredients become diverse and abundant. The main concern in the ingredients found in March is not limited to stomach qi. These changes of ingredients are in line with the concept of 'health maintenance', which is written in Huangdi Neijing. The writing teaches the wisdom of adaptation to nature. Si-jeol-sik's basic idea is maybe giving people some food, which includes useful elements to help them survive through a season or the next season. They can be also explained properly by the help of five flavours theory. According to Huangdi Neijing liver is main organ of spring. So liver is more important than other organs in spring. And the most efficient way for liver is supplying sweet or sour food. Interestingly, there are many sweet elements in Si-jeol-sik of spring.

• 대한한의학원전학회지
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• 제27권1호
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• pp.15-28
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• 2014

Objective : Jeol-sik, (festive seasons every 15 days based on sun cycle), refers to both Korean Traditional Festival food(jeol-sik), intertwined between months, and in-season meals(si-jeol-sik) in which the ingredients used are produced in each and one of the four season. I found that ingredients in Si-jeol-sik of Autumn are helpful for strengthening one's life force. Method : The study found that si-jeol sik for fall season has strong characteristic of casting out demons. When making songpyeon(half-moon-shaped rice cake) for Chuseok (Korean Thanksgiviing Day), they are steamed with pine needs spreaded underneath because pine needles are believed to have power in casting away evil spirits. For harvest ceremony, which were frequently held in October, people consumed steamed rice cakes garnished with red beans, which were considered to negate bad fortunes. Result : To prevent respiratory diseases caught esaily in fall due to wide daily temperature difference and dry weather, white good ingredients such as radish, pear, and taro are used. Conclusion : Main fall holidays are Chil-soek, Baek-Jung, Chu-seok. The best feature of Si-jeol-sik for fall season is that they cast out demons. Also, fall si-jeol-sik consist of many white ingredients for protecting lungs.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2009년도 하계학술대회 논문집
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• pp.41-41
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• 2009

본 연구에서 사용한 대향 타겟식 스퍼터링(Facing Targets Sputtering) 법은 일반 스퍼터링 법의 단점을 보완한 고밀도 저온 고속성막이 가능한 장점을 가지고 있기 때문에 플랙시블 디스플레이의 기체 투과 방지막으로 많이 쓰이고 있는 SiOxNy, SiOx, SiNx의 박막을 다층으로 증착하여 polymer 기판 위에 조건에 따라 증착 후 박막의 특성을 연구하였다. 제작된 박막의 광학적 특성을 UV-VIS spectrophotometer(Shimadzu Co.)를 사용하여 200~1100nm의 파장 영역에서 광 투과도를 측정하였으며 박막의 두께와 균일도는 $\alpha$-step(Veeco Co.)을 사용하여 측정하였고, 절대 정량이 가능하고 비파괴 분석법인 RBS(KOBE STEEL LTD.)를 이용하여 표면의 성질을 규명하고 XRR(PANalytical X'Pert PRO)을 분석하여 박막의 계면영역에 대한 물성 변화를 평가하고 박막의 밀도를 측정하였다. SEM(Digital Instrument Co.) 사진을 통해 단면과 표면을 관찰하였고 구조적 특성은 AFM(Digital Instrument Co.)와 XRD(Rigaku Co.) 통해 측정하였고 박막의 성분비는 EDS(JEOL Co.)를 사용하였으며 투습률 측정장치 (MOCON)을 이용하여 WVTR를 측정하였다.

• 한국재료학회지
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• 제24권1호
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• pp.48-52
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• 2014

The Mg-enriched magnesium aluminum silicate (MAS) glass is known for its higher mechanical strength and chemical resistance. Among such glasses, cordierite ($Mg_2Al_4Si_5O_{18}$) is well known to have a low thermal expansion and low melting point. Polycrystalline engineering ceramics such as alumina can be strengthened by a surface modification with low thermal expansion materials. The present study involves the synthesis of cordierite by a sol-gel process and investigates the effect of glass penetration on the surface of alumina. The cordierite powders were prepared from $Al(OC_3H_7)_3$, $Mg(OC_2H_5)_2$ and tetraethyl orthosilicate by hydrolysis and condensation reaction. The cordierite powders were characterized by X-ray diffraction (XRD, Rigaku), scanning electron microscope (SEM, JEOL: JSM-5610), energy dispersive spectroscopy (EDS, JEOL: JSM-5610), and universal testing machine (UTM, INSTRON). The X-ray diffraction patterns showed that the synthesized particles were ${\mu}$-cordierite calcined at $1100^{\circ}C$ for 1 h. The shape of synthesized cordierite was changed from ${\mu}$-cordierite to ${\alpha}$-cordierite with increasing calcination temperature. Synthesized cordierite was used for surface modification of alumina. Cordierite powders penetrated deeply into the alumina sample along grain boundaries with increasing temperature. The results of surface modification tests showed that the strength of the prepared alumina sample increased after surface modification. The strength of a surface modified with synthesized cordierite increased the most, to about 134.6MPa.

• 한국콘텐츠학회논문지
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• 제12권7호
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• pp.261-272
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• 2012

본 연구는 작업기억 향상을 위한 직류두개자극(tDCS)이 뇌졸중 환자의 뇌파에 어떠한 변화를 가져오는지 알아보기 위해 시행되었다. MMSE와 숫자 외우기 검사(DST)를 통해 선별된 만성 뇌졸중 환자 20명을 전산화 인지 훈련(CCT)만 실시한 I군(10명)과 tDCS와 CCT를 병행한 II군(10명)으로 무작위 배치하여 주 3회, 1일 30분, 4주간 중재하였다. 뇌파 변화를 알아보기 위해 중재 전, 2주 후, 4주 후 시점에서 뇌전도로 단어, 사진, 암산과제 시 세가지 밴드(${\theta}$; 4~8 Hz, lower ${\alpha}$; 8~10.5 Hz, upper ${\alpha}$;10.5~13 Hz)로 절대 스펙트럼 파워를 산출하여, 기준뇌파에 대한 증감률(%)을 구하였다. 연구 결과, 첫째, 측정시점에 따라서, ${\theta}$ 파워는 단어기억과제와 사진기억과제에서 유의한 차이를 보였다. lower ${\alpha}$ 파워는 모든 기억과제에서 유의한 차이를 보였다. upper ${\alpha}$ 파워는 암산과제에서만 유의한 차이를 보였다. 둘째, 4주째에서 모든 과제의 lower ${\alpha}$ 파워에서만 두 군간에 유의한 차이를 보였다. 따라서 본 연구의 과제에 따른 세 가지 밴드의 차이를 통해 작업기억의 정도를 정량화 하여 비교가 가능하며, 뇌손상환자에게 tDCS의 병행이 인지재활에 보조적인 도움을 줄 수 있을 것으로 생각된다.