한국인에서 치아 및 악궁의 크기와 총생의 관계

이난영,홍성수,이상호 대한소아치과학회 2006 大韓小兒齒科學會誌 Vol.33 No.3

경량 폴리머 콘크리트의 강도 및 난연성에 관한 연구

이윤수,주명기,김남길 강원대학교 석재복합신소재제품연구센터 2001 석재연 논문집 Vol.6 No.-

불포화 에스트테 수지가 가장 많이 이용되는 분야 중의 하나로 건축 내ㆍ외장재로 이용되고 있으나 여기서 지금까지 가장 문제로 되고 있는 것이 난연성 향상에 관한 것이다. 불포화 폴리에스터 수지는 탄소를 구성 성분으로 하는 유기물이므로 무기재료와 같은 불연성을 기대하기는 어려우나 지금까지의 연구결과 불연성 첨가제 등을 이용하여 어느 정도까지는 연소를 억제시킬 수는 있다는 것이다. 본 연구에서는 폴리머 콘크리트의 난연성 성능을 판단하기 위해 난연제가 이미 포함되어 시판되는 불포화 에스트테 수지를 결합재로 사용하고 탄산칼슘을 충진재로, 규사를 잔골재로 치환하고, 굵은골재를 경량골재로하는 경량 폴리머 콘크리트를 제조하여 결합재 첨가량과 규사 치환율을 변화시켜 변수별 난연특성을 구명하였던 바, 최적의 결합재 첨가량과 규사 치환율을 얻을 수 있었다. In this study, the light weight polymer concrete were produced, in which unsaturated polyester resin was used as a binder, calcium carbonate as a filler, silica sand and perlite as a fine aggregate, and expanded shale as a coarse aggregate. The effect of binder content and silica sand content that influence on strength and incombustibility are examined. Results show that the compressive, flexural and tensile strengths of the lightweight polymer concretes increase with increasing binder content as well as silica sand content. Addition of the unsaturated polyester resin with the flame retarder is effective for improving the incombustible properties of lightweight polymer concrete.

내구성 증진을 위한 콘크리트 구조물의 표면보강 기술개발

신영수,김남길 강원대학교 부설 석재복합신소재 제품연구센터 2002 석재연 논문집 Vol.7 No.-

본 연구에서는 콘크리트 구조물의 내구성을 증진시킬 목적으로 구조물 표면에 2종류의 혼화제를 이용하여 도포 및 침적한 후 그에 대한 강도, 흡수율 및 내약품성에 미치는 요인을 실험적으로 검토한 결과, MMA 및 BP를 도포 및 침적한 시멘트 모르타르의 휨 및 압축강도는 도포회수의 증가 및 침적시간의 경과에 따라 증가하는 경향을 나타냈다. MMA 및 BP를 도포 및 침적한 시멘트 모르타르의 흡수율은 도포회수의 증가 및 침적시간의 경과에 따라 감소하는 경향을 보였다. MMA 및 BP를 도포 및 침적한 시멘트 모르타르의 중량변화는 약액의 종류에 관계없이 침적시간이 경과함에 따라 감소하는 경향을 나타냈다. In this study, the effects of the number of coat and immersion period on strength properties, waterproofness and chemical resistance of coated and immersed cement mortars using two admixture were examined. Test results showed that the flexural and the compressive strengths of the coated and immersed cement mortars increase with increasing number of coat and immersion period. The water absorption of the painted and immersed cement mortars tended to decrease with increasing number of coating and immersion period. In the case of the change of weight and the immersion period for the solutions, a decreasing tendency was shown as the immersion period increases regardless of solution, with a little variation.

수종의 레진 모노머가 우식 유발성 세균의 활성에 미치는 영향

서영주,국중기,윤정훈,김수관,이난영,이상호 大韓小兒齒科學會 2004 大韓小兒齒科學會誌 Vol.31 No.2

이전의 연구에서 레진 재료를 포함한 여러 수복재료에서의 유출물이 우식 유발 세균의 성장에 영향을 줄 수 있다는 보고가 있었다. 이번 연구의 목적은 대표적인 우식 유발 세균인 Streptococcus mutans와 Streptococcus sobrinus의 성장에 대하여 레진을 구성하는 모노머들(Bis-GMA, TEGDMA, EGDMA, UDMA, HEMA, Camphoroquinone)이 어떠한 영향을 줄 수 있는지에 대하여 알아보고자 하는 것이다. 결과는 다음과 같다. 1. S. mutans와 S. sorbinus의 성장률은 6가지 레진 모노미 모두에서 0.03 m㏖/L의 농도에 서 유의할 만하게 감소되었다. 2. S. mutans의 성장률은 0.01 m㏖/L 농도의 UDMA의 0.005 m㏖/L, 0.01 m㏖/L 농도의 Camphoroquinone에서 대조군에 비하여 유의할만하게 감소되었다. 3. S. sorbinus의 성장률은 0.01 m㏖/L 농도의 HEMA. UDMA와 0.005 m㏖/L, 0,01 m㏖/L 농도의 Camphoroquinone에서 대조군에 비하여 유의할만하게 감소되었다. 4. S. sorbinus의 성장률은 0.001, 0.01, 0.03 m㏖/L 농도에서 대조군에 비하여 유의할만한 감소를 보였으며 각 실험군들 간에도 통계학적으로 유의할만한 차이를 보였다. 이상의 결과를 종합하면 레진 모노머를 적용한 모든 군에서 적용하지 않은 양성 대조군에 비해 두 세균의 증식률이 감소되었으며, 세균의 성장을 촉진하지 않은 것으로 사료된다. The purpose of this study was to examine the effects of resin composite monomers (Bis-GMA, TEGDMA, EGDMA. UDMA. HEMA, Camphorquinone) on the growth of the two cariogenic bacteria, Streptococcus mutans and Streptococcus sobrinus. We obtained the following results : 1. The growth rate of S. mutans and S. sobrinus was decreased significantly in the group of all composite resin monomer at a concentration of 0.03mmoI/L(P〈0.01). 2. The growth rate of S. mutans in the group of UDMA at a concentration of 0.01 mmol/L and the group of CQ at a concentration of 0.005 mmol/L, 0.01 mmol/L 1%-as decreased significantly compared to the control group(P〈0.01). 3. The growth rate of S. sobrinus in the group of HEMA. UDMA at a concentration of 0.01 mmol/L and the group of CQ at a concentration of 0.005mmol/L. 0.0lmmol/L was decreased significantly compared to the control group(P〈0.01). 4. The growth rate of S. sobrinus in the group of EGDMA at a concentration of 0.001, 0.01. 0.03mmol/L was decreased significantly compared t o the control group (P〈0.01) and were showed to be statistically significant difference between experimental groups(P(0.01).

WWW 기반의 원격교육시스템 설계 및 구현

박남숙,장기화,곽난희,이수현,우용태 國立 昌原大學校 精報通信硏究所 1998 精報通信論文集 Vol.2 No.-

The purpose of this paper is to develope a distance education that would be a courseware for a specific object, which can be available for student to learn the necessary knowledge or function, with no restriction of time or place, using WWW and Oracle DBMS. The distance education was designed in this paper consists of bulletin board, subject information, lecturing schedule, online instructions, questions and answers, submit and confirmation of reports, evaluation of lecturing, reference sites, chatting and discussion room, and data bank. The distance education coupled by WWW and database will change the educational form from one-direction to bi-direction between a teacher and the students. This can also provide a multimedia information to the students through WWW environment with convenient user interface. Those benefits made it possible to offer animated audio-visual materials and search for the information concerned through a hypertext technique. Besides, various kinds of informations were stored at database to increase an effectiveness in managing data. Since both teacher and students, are easy to add new information using the process of instruction to the database, the amount of the stored information in the distance education can be expanded effectively.

K-POP의 ``감흥(感興)``에 대한 연구: 후킹효과(Hooking Effect)를 중심으로

이난수 ( Nan Su Lee ) 조선대학교 인문학연구소 2012 인문학연구 Vol.0 No.43

이 논문은 K-POP에서 나타난 심리적 현상을 감상자의 ``감흥``으로 접근하였다. 필자는 이를 위해 K-POP의 주류인 ``후크송``의 음악적 특징을 분석하였다. ``후크송``은 짧고 매력적인 후렴구의 반복, 솔직하고 간결한 가사, 화려한 군무, 풍부한 사운드로 구성되었다. 이와 같은 음악을 경험하는 가운데 생성되는 감상자들의 심리적 현상을 ``후킹효과``라 부른다. 이 현상은 감상자들로 하여금 자신도 모르게 노래를 흥얼거리며 춤을 따라하게 만드는 특징을 지니고 있다. ``후킹효과``의 이러한 점은 동양미학에서의 ``감흥``적 요소와 일치한다. ``감흥``은 일어나는 ``흥``에 따라 춤을 추거나 흥얼거림에서 시작하여, 궁극에는 인간이 자연과 일체임 자각하는 것을 경계로 삼고 있다. 필자는 ``후킹효과``의 ``감흥``적 요소인 흥겨움과 흥얼거림이 동양미학에서의 ``감흥``과 어떠한 차이점이 있으며, 이를 통해 앞으로 K-POP이 나아가야 할 점을 제시하고자 한다. This paper approaches the psychological effect of K-Pop from the appreciator`s ``Inspirational`` perspective. For this, I analyzed the musical characteristics of ``Hook`` of K-Pop. A Hook generally consists of a repetitive short riff, passage, or phrase, easy to dance to, splendid performance, rich sound all together. Psychological effects arising inside of appreciators may be termed as ``Hooking effect`` when they experience the songs. Hooking songs make the appreciators humming a tune and dancing to dance of hook songs. This phenomenon may be described as ``inspirational`` effect of the appreciators. At first, appreciators will grow their interest in the songs, humming a tune and dancing to the songs, finally they interact with the musical works more deeply in the emotional charge of the songs and the emotional effects linger in the consciousness after the musical works done.

古조리서로 본 종가(宗家)의 살림문화 - 『수운잡방(需雲雜方)』, 『음식디미방』, 『온주법(蘊酒法)』을 중심으로

이난수 ( Nan Su Lee ) 한국문학언어학회(구 경북어문학회) 2014 어문론총 Vol.62 No.-

The objective of this study was to examine head families’ culture based on their food. The subjects of this study were three cook books ( Suwunjapbang, Eumshikdimibang, and Onjubeop) of head families in the Gyeongsangbuk-do area written in the 16th to 18th centuries. First, the cultural aspect of head families’ food was studied through the motives and external environment for writing the cook books. The three cook books were written in need of good food for the head families’ social association and unity of the clan. That is, the head families’ practice of ‘ancestral ritual services and hospitality to guests and visitors’ was reflected in food. This is suggested by the meanings implied in the names of the cook books and the background for writing the books. The largest part of the cook books is occupied by wine, which represents head families’ food. It is because the head families needed wine not only for the rituals of coming-of-age, wedding, funeral, and ancestor worship but also for the development of human networks. Wine plays the role of catalyst softening human relations and that of lubricant promoting the unity of community. That is, wine is essential for the practice of ‘ancestral ritual services and hospitality to guests and visitors.’ Thus, this study discussed the production and consumption of wine as well as the consequent effects, and examined the functions of wine as food and medicine. This is not overlooking the harmful effect of wine on health, but just for understanding the head families’ salim (housekeeping) culture observed in a series of processes of making and consuming food in the chapters for wine. For this reason, the discussion of this study was limited to common wine brewing methods and medicinal wines. Emphasis on mind and attitude in brewing wine shows that, along with the cleanness of materials, the brewer’s purity and sincerity were required, and records on the efficacies of wine stress the importance of salim through food.

일반논문 : 한대(漢代) 『시경(詩經)』 이해에 나타난 윤리적 정서 -"미자설(美刺說)"을 중심으로-

이난수 ( Nan Su Lee ) 동양철학연구회 2011 東洋哲學硏究 Vol.65 No.-

본 연구는 한대(漢代) 경학(經學)의 발전에 따른 유가적 윤리관이 인간의 정서에 미친 영향을 『시경(詩經)』의 연구를 통해 살펴보는데 목적이 있다. 경학은 한나라 왕권의 정당성과 정통성의 수립이라는 국가적 이념의 명분으로 등장한 학풍이다. 이처럼 경학은 사회적 흐름에 따라 생성된 사상이 아니라 국가적 이념의 명분으로 등장한 사회적 규범이라는 시대적 요청으로 형성된 것이다. 이 과정에서 『시(詩)』가 『시경』으로 변모하게 되었으며, 인간의 정서를 윤리성과 결부시켰다. 즉 경학의 영향에 의한 유가적 윤리관이 시의 정서 속에서도 관찰된 것이다. 그리고 시의 정서는 윤리적 가치와의 관련성으로 사회적 공용성을 획득하게 되면서, 『시경』에 대한 학파가 형성되는 시점을 기준으로 구체화된다. 그들은 시를 해석하는 방법으로 ``미자설(美刺說)``을 채택한다. ``미자설``은 ``찬미(讚美)``와 ``풍자(諷刺)``라는 두 가지 관점으로 시를 해석한 것이다. ``찬미``의 시는 덕이라는 긍정적인 윤리성을 기쁨이라는 긍정적인 감정과 결합시킨 윤리적 정서이며, ``풍자``의 시는 부덕함이라는 윤리적인 내용을 원망과 고통의 감정과 결합시킨 윤리적 정서이다. 이와 같은 윤리적 정서는 ``미자설``을 중심으로 체계화된 것으로 한대의 지배적인 시의 이해 방식이며, 유가적 인간관을 구현하기 위한 수단이었다. The purpose of this article is to study the effectiveness of Confucian ethics on human emotions through the analysis of Book of Songs according to the development of Confucian classics in Han period. Confucian classics is newly appeared academic traditions for the purpose of establishment of royal authority and legitimacy of Han dynasty. In other words, Confucian classics was formed by the certain demands of dynasty`s proper ruling to reach ideal confucian society. In the process, Songs were transformed into a authoritative classical Book of Songs and it matched human emotions with ethics. That is, confucian ethical feelings deliberately found in the feelings of old odes by the contemporary scholars. And the emotions of odes acquired social commonality relating to ethical value during the formative period of school of Book of Songs. Han scholars adopted a ``Theory of Praise-Criticism`` which interpret old odes from the viewpoint of ``Praise`` and ``Criticism``. ``Praising`` odes give that delightful ethical emotions to rulers, but ``Criticizing`` odes give blame for the immoral governance of the rulers. In conclusion, understanding the establishment of old Songs in the spectrum from ``Theory of Praise-Criticism`` is important to recognize the Han period properly because using ``Theory of Praise-Criticism`` in the interpretation of contemporary social affairs was the major scholastic attitude in Han Dynasty. Moreover, it was a much more important way to actualize the ideal confucian society in this world.

A heat shock protein 70 protects the green peach aphid (Myzus persicae) against high-temperature stress

Chen Nan,Tan Jia-Yu,Wang Ying,Qi Ming-Hui,Peng Jiang-Nan,Chen De-Xin,Liu Su,Li Mao-Ye 한국응용곤충학회 2022 Journal of Asia-Pacific Entomology Vol.25 No.4

Heat shock proteins (HSPs) are encoded by Hsp genes and are important in insect tolerance to heat stress. The green peach aphid, Myzus persicae, is an important agricultural pest. The functions of Hsp genes in the thermal tolerance of M. persicae are unknown. This study identified an Hsp70 gene (MpHsp70a) and analyzed its role in protection against high-temperature stress. MpHsp70a encoded a protein consisting of 659 amino acid residues. The protein had three signature motifs of the HSP70 family and was predicted to be localized in the cytoplasm. The highest expression level of MpHsp70a was in adults, and differences in the mRNA levels between apterous and alate adults were not significant. Exposure to high temperatures (30, 35 and 40 ◦ C) for one hour and treatment with 40 ◦ C for different times (0.5, 1 and 2 h) all resulted in a greatly elevated expression level of MpHsp70a, suggesting that the gene is heat-inducible. The transcriptional level of MpHsp70a was suppressed by injection with double-stranded RNA (dsRNA), and knockdown of MpHsp70a significantly increased the suscep tibility of apterous adults to 40 ◦ C. These results indicate that MpHsp70a is required for tolerance to hightemperature stress in M. persicae. Our findings highlight the molecular mechanism underlying Hsp70-mediated thermal adaptation in M. persicae.

A positive feedback loop of heparanase/ syndecan1/nerve growth factor regulates cancer pain progression

Xiaohu Su,Bingwu Wang,Zhaoyun Zhou,Zixian Li,Song Tong,Simin Chen,Nan Zhang,Su Liu,Maoyin Zhang 대한통증학회 2023 The Korean Journal of Pain Vol.36 No.1

Background: The purpose of this research was to assess the role of heparanase (HPSE)/syndecan1 (SDC1)/nerve growth factor (NGF) on cancer pain from melanoma. Methods: The influence of HPSE on the biological function of melanoma cells and cancer pain in a mouse model was evaluated. Immunohistochemical staining was used to analyze HPSE and SDC1. HPSE, NGF, and SDC1 were detected using western blot. Inflammatory factors were detected using ELISA assay. Results: HPSE promoted melanoma cell viability, proliferation, migration, invasion, and tumor growth, as well as cancer pain, while SST0001 treatment reversed the promoting effect of HPSE. HPSE up-regulated NGF, and NGF feedback promoted HPSE. High expression of NGF reversed the inhibitory effect of HPSE down-regulation on melanoma cell phenotype deterioration, including cell viability, proliferation, migration, and invasion. SST0001 down-regulated SDC1 expression. SDC1 reversed the inhibitory effect of SST0001 on cancer pain. Conclusions: The results showed that HPSE promoted melanoma development and cancer pain by interacting with NGF/SDC1. It provides new insights to better understand the role of HPSE in melanoma and also provides a new direction for cancer pain treatment.