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Atmospheric Pressure Chemical Vapor Deposition을 이용한 SiOx 박막 형성

  • Kim, Ga-Yeong;Park, Jae-Beom;Yeom, Geun-Yeong
    • Proceedings of the Korean Vacuum Society Conference
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    • 2012.02a
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    • pp.167-167
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    • 2012
  • 최근 들어 유연한 폴리머 기판을 이용한 차세대 Flexible display는 다양한 장점으로 인해 많은 연구가들에 의해 유망한 차세대 디스플레이로 주목받고 있다. 일반적 폴리머 기판은 산소, 수분 등에 취약하기 때문에 무기막 또는 멀티레이어를 증착한다. 본 연구는 remote-type과 direct-type DBD로 구성되어 있는 double discharge system을 이용한 SiOx 무기막 증착 실험에 관한 연구이다. 본 연구에서는 HMDS/$O_2$/He/Ar gas mixture를 통해 발생된 대기압 플라즈마를 이용하여 공정을 진행하였다. SiOx를 증착할 때 SiOx 무기막 증착 실험은 $O_2$의 유량이 감소할수록 그리고 HMDS의 유량이 증가함에 따라 deposition rate, 즉 공정효율이 증가하는 것을 알 수 있었다. 하지만 HMDS의 유량이 증가하고 $O_2$ gas 유량이 감소함에 따라 carbon과 hydrogen 등의 불순물의 함유도 함께 증가하게 되고 이로 인해 무기막의 특성이 약해지고, 유기적인 막 특성이 강해지게 된다. Double discharge system을 사용하였을 경우에는 remote-type DBD system을 사용하였을 때 보다 더 높은 공정 효율을 관찰할 수 있었고 동시에 더 낮은 불순물 함량을 가지는 것을 알 수 있었다. 이는 기판에 추가적으로 인가되는 power에 따라 discharge efficiency가 향상되어 Si-O bond 결합을 유도, 무기막적 특성이 강해지고, 또한 기판 바이어스 효과에 따라 증착무기막의 기계적인 강도 역시 향상됨을 관찰할 수 있었다.

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Brain Injury Patients's Disability Degree and Educational Needs of Family Caregivers (뇌손상 환자의 장애정도와 간병가족의 교육요구도)

  • Yun, Sun-Hee;Yoo, Yang-Sook;Cho, Ok-Hee;Hwang, Kyung-Hye
    • Journal of Home Health Care Nursing
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    • v.19 no.1
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    • pp.37-45
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    • 2012
  • Purpose: This study was conducted in order to identify the brain injury patients's disability degree and educational needs of family caregivers. Methods: A convenience sample of 94 families with brain injury patients, who have been receiving treatment at the neurological intensive care unit and neurosurgery ward, were used. Data was collected with a self-report questionnaire from September 5 to November 28, 2011, and was analyzed using SAS program. Results: 'Defecation/urination' disability was the highest score of patient's physical disability and the next ranking was 'paralysis'. 'Memory impairment' disability was the highest score of patient's cognitive disability, and the next ranking was 'personality changes'. Overall, educational needs of family caregivers scored 4.15 out of the perfect score of 5. The factor, which scored highest, was 'information related with disease'. In addition, educational needs of family caregivers were positively related with patient's degree of. Conclusion: Educational needs of family caregivers are distinct, according to the disability degree of brain injury patient. Therefore, the study suggests the development of individualized educational program for family with brain injury patient.

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The Study of Healthcare Supply Chain Management in United States for Justifying Strategical Implementation (미국 보건의료산업의 공급사슬관리(SCM) 연구동향 고찰을 통한 전략적 도입의 타당성 평가)

  • Kim, Sung-Ho;Kim, Young Hoon;Kim, Jang Mook;Sung, Dong Hyo
    • Korea Journal of Hospital Management
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    • v.20 no.3
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    • pp.24-35
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    • 2015
  • This paper attempts to critically review the status of supply chain operations in the healthcare field in an attempt to address what has been done in academics as well as the practitioner's field to gain insight where future research efforts should be addressed. Based on literature set through review on previous studies, literature published within the past 10 years will be reviewed. The purpose of the study can be summarized as follows. First, overviews of healthcare SCM. Second, comparative studies on commercial SCM and healthcare SCM. Third, major tools in SCM. Finally, the barriers of adopting healthcare SCM. The findings of this study reveals potential benefits from using supply chain management tools. Although research and case studies in healthcare industries are not as extensive as in other industries, a clear trend appears to be forming in that deployment of supply chain management indeed generates consumer and provider's surplus from which the entire society would benefit.

The Study of Invigorating the Spleen by Methodology of Oriental Medicine Music Therapy (한방음악치료(韓方音樂治療)의 기법(機法)에 관한 연구(硏究) - 비허보기음악요법(脾虛補氣音樂療法)을 중심(中心)으로 -)

  • Lee, Seung-Hyun;Kim, Yeo-Jin
    • Journal of Korean Medical classics
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    • v.21 no.4
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    • pp.225-232
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    • 2008
  • The purpose of this study is to introduce the music therapy as one of the 17 kinds of oriental medicine music therapy and investigate the record in the literature. The spleen is an organ that has the function of digestion, absorption, and supply of nutrition. Damp, anxiety, and improper diet can cause deficiency syndrome of the spleen. The symptoms of deficiency of the spleen are poor appetite, abdominal distension, borborygmus, water-grain dysentery, dyspepsia, and lack of strength in limbs. CV12, CV6, S36, B20, B21, and Sp4 are can be used as acupuncture points that are a great help to the patients who suffer from deficiency of the spleen. This study describes the theory of invigorating the spleen music therapy that has a good possibility as a new method of oriental medical treatment and present the acupuncture points that can be used with invigorating the spleen music therapy. The tone of the spleen is Gung(宮) and the sound of the spleen is related to a song. The music therapy of invigorating the spleen includes beating Earth-Gi(地氣) rhythm with Cheonnyeonmanse, stimulating Spleen Meridian and Stomach Meridian with Gayaguem sanjo jungjungmori, and acupuncture with "Le Cygne" of Camille Saint-Saens.

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A REVIEW AND INTERPRETATION OF RIA EXPERIMENTS

  • Vitanza, Carlo
    • Nuclear Engineering and Technology
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    • v.39 no.5
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    • pp.591-602
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    • 2007
  • The results of Reactivity-Initiated Accidents (RIA) experiments have been analysed and the main variables affecting the fuel failure propensity identified. Fuel burn-up aggravates the mechanical loading of the cladding, while corrosion, or better the hydrogen absorbed in the cladding as a consequence of corrosion, may under some conditions make the cladding brittle and more susceptible to failure. Experiments point out that corrosion impairs the fuel resistance for RIA transient occurring at cold conditions, whereas there is no evidence of important embrittlement effects at hot conditions, unless the cladding was degraded by oxide spalling. A fuel failure threshold correlation has been derived and compared with experimental data relevant for BWR and PWR fuel. The correlation can be applied to both cold and hot RIA transients, account taken for the lower ductility at cold conditions and for the different initial enthalpy. It can also be used for non-zero power transients, provided that a term accounting for the start-up power is incorporated. The proposed threshold is easy to use and reproduces the results obtained in the CABRI and NSRR tests in a rather satisfactory manner. The behaviour of advanced PWR alloys and of MOX fuel is discussed in light of the correlation predictions. Finally, a probabilistic approach has been developed in order to account for the small scatter of the failure predictions. This approach completes the RIA failure assessment in that after determining a best estimate failure threshold, a failure probability is inferred based on the spreading of data around the calculated best estimate value.

Iron Toxicity to Peritoneal Macrophage Due to Alteration of Mitochondria by NO

  • Yoon, Ji-Yeon;Kim, Jin-Sun;Lee, Heum-Sook;Lee, Kyo-Young;Cheon, Choong-Ill;Lee, Myeong-Sok;Park, Jong-Hoon;Song, Eun-Sook
    • Animal cells and systems
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    • v.8 no.2
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    • pp.97-103
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    • 2004
  • The cytotoxic effect of iron was examined in peritoneal macrophage to determine contributing factors by iron injection to rat. Viability was reduced by 24% by the iron-overload and by 30% by short-term iron addition. Total iron was increased by 45% in the iron-overloaded with remarkable elevation (9 to 14 fold) in the presence of $FeSO_4$. Free calcium was also increased by 19% in control and 44% in iron-overloaded group due to additional $FeSO_4$ NO and MDA were increased by 40% and 136%, respectively, with significant reduction (37%) of NAD(P)H. RCR and cytochrome c oxidase activity were lowered approximately by 10% with reduction of mitochondrial membrane potential. Addition of iron was frequently associated with altered distribution of mitochondria of high membrane potential in the iron-overloaded macrophage. These results suggest altered mitochondria with high NO and low NAD(P)H due to iron.

The Marketing Strategy to Stimulate Customer's Interest in Art-Gallery Business Plan

  • HAN, Soomin;KANG, Eungoo
    • Journal of Distribution Science
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    • v.18 no.8
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    • pp.47-54
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    • 2020
  • Purpose: Through strategic marketing, art galleries can help retain the artistic value in an extensively urbanized world and also provide a means to showcase aspirational messages that artworks attempt to portray. The purpose of the current study is to analyze a marketing strategy for an art gallery based on prior marketing theories. Research design, data and methodology: Scant research is available to guide regarding what elements of marketing theories should be applied to accomplish customer satisfaction in an art gallery business plan. Thus, the present authors suggest more specific marketing strategy using four traditional marketing theories for practitioners who conduct business planning strategy in an art gallery. Results: The current study suggests the synthesized model for a successful business plan of an art gallery and figured out that two distinctive segments through marketing mix and SWOT analysis are ideal because it would be easier to meet visitors' aesthetic tastes while still meeting organizational objectives. Conclusions: As all other businesses, art galleries have to adapt to survive by innovating some of the components of the marketing mix to create a competitive advantage. It also requires a strategy for that combines targeting and segmenting with the incorporation of the marketing mix to attain competitiveness.

Stages of Human Development and Education In the Choson Dynasty (조선시대(朝鮮時代)의 인간(人間) 발달(發達) 단계(段階) 및 그 교육(敎育) 내용(內容))

  • Rew, Jeom Sook
    • Korean Journal of Child Studies
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    • v.10 no.2
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    • pp.1-18
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    • 1989
  • This documentary study explored the stages of human development and education in the Choson Dynasty with the use of "Non Eu, Ye Gi, So Hak, Tae Gyo Sin Gi, and Dong Yi Bo Gam. The findings were compared with Western writings of a comparable period. It was found that education in the Choson Dynasty was largely concerned with mental attitude and conduct in ordinary life (education for manners and living). Education claimed to stand for unity of knowledge and behavior. It was founded on a Confucian view of education with a saint as the ideal model to be emulated. In the early years, home influence was emphasized. This was later replaced by institutional education. Additional education frequently extended to ten years and even forty or more years for the development of leaders. Based on the above findings. It was concluded that (1) the Western stages of human development exemplified by the Puritans and by Rousseau were concerned only with progressive changes from the postnatal stage to adolescence but the stages or the Choson Dynasty applied to the entire life span, from prenatal life through old age: (2) the developmental stages of males and females were defined differently as a result of differences in educational contents and sex-role distinctions: (3) life span educational objectives were Confucian and the preparatory stages were long coming to fruition in late senescence: and (4) although education was centered on manners and based on Confucianism, much of human development in the Choson Dynasty corresponds to that of modern times.

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Gastric Adenocarcinoma Secondary to Primary Gastric Diffuse Large B-cell Lymphoma

  • Sakr, Riwa;Massoud, Marcel Antoine;Aftimos, Georges;Chahine, Georges
    • Journal of Gastric Cancer
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    • v.17 no.2
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    • pp.180-185
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    • 2017
  • Despite the decreasing incidence and mortality from gastric cancer, it remains a major health problem worldwide. Ninety percent of cases are adenocarcinomas. Here, we report a case of gastric adenocarcinoma developed after successful treatment of prior primary gastric diffuse large B-cell lymphoma (DLBCL). Our patient was an elderly man with primary gastric DLBCL in whom complete remission was achieved after R-CHOP (cyclophosphamide, adriamycin, vincristine, prednisolone plus rituximab) chemotherapy. Helicobacter pylori infection persisted despite adequate treatment leading to sustained chronic gastritis. The mean time to diagnose metachronous gastric carcinoma was seven years. We believe that a combination of many risk factors, of which chronic H. pylori infection the most important, led to the development of gastric carcinoma following primary gastric lymphoma. In summary, patients who have been successfully treated for primary gastric lymphoma should be followed up at regular short intervals. H. pylori infection should be diagnosed promptly and treated aggressively.

Fabrication and characterization of n-ZnO:Ga/p-Si heterojunction light emitting diodes (n-ZnO:Ga/p-Si 이종접합 발광 다이오드의 제작 및 특성 평가)

  • Han, W.S.;Kong, B.H.;Ahn, C.H.;Cho, H.K.;Kim, B.S.;Hwang, D.M.
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2008.06a
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    • pp.97-98
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    • 2008
  • n-ZnO/p-Si heterostructure is a good candidate for ZnO-based heterojunction light emitting diodes(LED) because of its competitive price and lower driving voltage. However, the conventional LED shows much lower extraction efficiency, because it has small top contact and large backside contact. In this structure, the injected current from the top contact enters the active region underneath the top contact. Thus, the emitted light is hindered by the opaque top contact. This problem can be solved by using a current-blocking layer(CBL) that prevents the current injection into the active region below the top contact.

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