CMOS 연산 증폭기 및 비교기 회로의 자동 설계

신현우,김천호,김득경,신창호,신경욱 國立金烏工科大學校附設生産技術硏究所 1994 産業技術開發硏究 Vol.10 No.-

The paper describes a CMOS analog circuit design tool, K_ACD(Kumoh_Analog Circuits Designer), and design results. The K_ACD was developed for automatic design of fundamental analog circuit blocks such as comparator, unbuffered OP AMP, and buffered OP AMP. For given specifications and process parameters, it computes bias currents, transistor sizes, voltage gain, and power dissipation, then SPICE simulations are automatically carried out. Some design examples show usefulness of the K_ACD in analog circuit designs.

Dylan Thomas 詩 硏究

신현호 ( Hyun-ho¸ Shin ) 현대영미어문학회 1993 현대영미어문학 Vol.11 No.-

Dylan Thomas was in a rather peculiar position among the contemporary poets. Pound, Eliot, Yeats and Auden all represent an intellectualization of the poetic world or an implied view of poetry as social achievement. On the other hand, Thomas takes an attitude of antithetical movement such as William Blake. Thomas’ whole interest was in the self-exploration. He, casting light on the dark interior of the self, tried to discover himself. His poetry explores the subject of birth and death, creation and destruction in terms of primitivism, pantheism and finally love of man, accepting and celebrating the tragic human condition. In his early poetry based upon the “womb and tomb” motif, he attempted to overcome the fear of death by firmly believing the coexistence of birth and death. What Thomas found to symbolize this belief was the womb where birth and death seems to coexist. And he considered death as a part of nature’s process. His poetry of the middle period shows a greater involvement with others, as “A Refusal to Mourn the Death” and “After the funeral”, he does not deny the death of all things, including himself, but in anticipating this necessary destruction within poems and by participating in it, Thomas can overcome the fear of death. And the final period, characterized by longer, narrative poems like “Fern Hill” or “Poem in October” is one of acceptance of humanity and the tragic condition of man, or a movement toward affirmation and a conditional consent to the presence of death in life. Though Thomas dealt with the familiar theme to us, he dealt with it in a strange, surprising way. His originality and worthiness lies in the technique rather than themes. In talking of the change of technique, Thomas’s idiosyncratic language in his early poem is the reflection both of joy in playing with words and of a necessity to express the ineffable unity of the universe. While Thomas’ middle period shows a greater concern with the specifics of eternal reality displaced the primary vision, so that in the later poems ultimate realities are approached through nature and daily life instead of visionary imagery.

PR 실무자와 기자의 언론관계에 관한 상호 인식 비교 연구

신호창 ( Ho Chang Shin ),김미현 ( Mi Hyun Kim ) 한국PR학회 2002 PR연구 Vol.6 No.1

Media relations to take deep effect to audience is the highest priority for public relations practitioners to increase the high contact with their public. Indeed, this process remains the misunderstanding and prejudice between journalists and PR practitioners. This study is attempt to compare the perception based on the pre-study done by Ho-Chang Shin in 1994. Questionnaires were sent to 200 journalists and 200 public relations practitioners and 102 journalists(response rate=51.0%) and 127(63.5%) practitioners were replied. Here are the findings : First, the field of media relations consists mainly of obtaining publicity is considered important by journalist and public relations practitioner. And they think that the negative factor such as treats including dining or restriction of press release is not important. This result shows the different thing compared to the pre-study. Second, public relations practitioners and journalists disagree regarding the point of view of media relations. Practitioners perceive journalists a specialized and high-responsibility man. but journalist has lower respects about themselves than practitioner perceive them. The two group reported different perception of public relations` view. It is found that practitioner has more positive thinking on the public relations` view than journalist. In the correlations, practitioners` and journalists` perception on each other shows significant difference. PR practitioner recognize journalist as a partner at a same level. But journalist consider PR practitioner and information source. Third, practitioner and journalist have similarity on their ethical value. If its degree is low, it is possible that activities such as treat, presents and request to correct news to enhance relationship between two groups. Fourth, in media relations, practitioners are tends to corporate with journalists for company`s positive image. And they also react objectively to the crisis. But journalist is reluctant to agree the various activities of PR practitioners in media relations. Fifth, the result here for media relations model of Korea compared to pre-study can be suggested as follows : ① journalist-oriented, ② media coverage, ③ information distortion, ④ information management, and ⑤ positive public relations.

Induction of heme oxygenase-1 protects against podocyte apoptosis under diabetic conditions

Lee, Sang Choel,Han, Seung Hyeok,Li, Jin Ji,Lee, Sun Ha,Jung, Dong-Sub,Kwak, Seung-Jae,Kim, Seung Hye,Kim, Dong Ki,Yoo, Tae-Hyun,Kim, Jin Hyun,Chang, Se-Ho,Han, Dae Suk,Kang, Shin-Wook International Society of Nephrology 2009 Kidney international Vol.76 No.8

Heme oxygenase-1 (HO-1) is an anti-oxidant enzyme normally upregulated in response to oxidant injury. Here we determined the role of HO-1 in podocyte apoptosis in glomeruli of streptozotocin-treated rats and in immortalized mouse podocytes cultured in media containing normal or high glucose. HO-1 expression, its activity, the ratio of Bax/Bcl-2 protein, and active caspase-3 fragments were all significantly higher in isolated glomeruli of diabetic rats and in high glucose–treated podocytes. These increases were inhibited by zinc protoporphyrin treatment of the rats or by HO-1 siRNA treatment of the podocytes in culture. The number of apoptotic cells was also significantly increased in the glomeruli of diabetic rats and in high glucose–treated podocytes. Inhibition of HO-1 accentuated the increase in apoptotic cells both in vivo and in vitro. Our findings suggest that HO-1 expression protects against podocyte apoptosis under diabetic conditions.

울금(鬱金)에서 분리된 demethoxycurcumin이 백서의 혈관재협착에 미치는 효과

길인호,정명수,신창호,배현옥,정헌택,이기남,Kil, In-Ho,Chong, Myong-Soo,Shin, Chang-Ho,Pae, Hyun-Ock,Chung, Hun-Taeg,Lee, Ki-Nam 대한예방한의학회 2008 대한예방한의학회지 Vol.12 No.3

The pathobiologic process of arterial stenosis following balloon angioplasty continues to be an enigmatic problem in clinical settings. This study investigates the ability of demethoxycurcumin, a curcuminoid isolated from Radix Curcumae, to attenuate balloon injury-induced neointima(NI) formation in the rat carotid artery. It was found that demethoxycurcumin induced inducible heme oxygenase(HO-1) expression and inhibited dose-dependently cellular proliferation in rat vascular smooth muscle cells. Perivascular application of demethoxycurcumin immediately following injury significantly reduced NI area and NI thickness 2 weeks post-injury. Interestingly, treatment with tin-protoporphyrin IX, a HO inhibitor, reversed the effects of demethoxycurcumin on NI formation. These results implicate demethoxycurcumin as a potent new therapeutic agent that is capable of reducing post-angioplasty arterial stenosis through induction of the HO-1 expression.

한의진단명과 진단요건의 표준화 연구 II (표준화 실례) : 2차년도 연구결과 중간 보고

양기상,최선미,최승훈,안규석,박경모,박종현,김성우,신승호,정우열,전병훈,고현,김정범,신상우,김성훈,김동희,권영규,엄현섭,장혜옥 한국한의학연구원 1996 한국한의학연구원논문집 Vol.2 No.1

The diagnostic requirements were suggested and explained regarding the systems of differentiation of symptoms and signs in the second year study of standardization and unification of the terms and conditions used for diagnosis in oriental medicine. The systems were as follows; - differential diagnosis according to condition of body fluid, differentiation of syndromes according to the state of qi and blood, differential diagnosis according to relative excessiveness or deficiency of yin and yang(氣血陰陽津液辨證) - differentiation of diseases according to pathological changes of the viscera and their interrelation - analyzing and differentiating of febrile diseases in accordance with the theory of the six channels(傷寒辨證) The individual diagnosis pattern was arranged by the diagnostic requirements in the following order : another name(異名), notion of diagnosis pattern, index of differentiation of symptoms and signs(辨證指標), the main point of diagnosis, analysis of diagnosis pattern(證候分析), discrimination of diagnosis pattern(證候鑑別), a way of curing a diseases(治法), prescription(處方), herb in common use(常用藥物), diseases appearing the diagnosis pattern(常見疾病), documents(文獻調査). This study was carried out on the basis of the Chinese documents and references.

경남지역 주요 약용작물의 해충 종류 조사

신현열,이동운,추호렬,정도철 경상대학교 농업생명과학연구원 2002 농업생명과학연구 Vol.36 No.4

경남지역 주요 약용 작물 5종에 발생하는 해충과 기타 해로운 동물의 종류를 1999년과 2000년 2개년 동안 조사하였다. 홍화에서는 우엉수염진딧물과 꽃노랑총채벌레, 대만총채벌레, 오이총채벌레, 알락수염노린재를 포함한 13과 16속 20종이 확인되었으며, 산약에서는 꽃노랑총채벌레, 대만총채벌레, 애긴노린재를 포함한 6과 7속 10종이, 두충에서는 차주머니나방을 포함하여 6과 8속 8종이, 당귀에서는 대만총채벌레, 꽃노랑총채벌레, 차응애, 점박이응애, 복숭아혹진딧물을 포함한 11과 15속 16종이, 길경에서는 담배거세미나방, 파밤나방을 포함하여 10과 11속 14종의 해충이 확인되었다. Insect pests and some important arthropod pests infesting five medicinal crops were surveyed in Gyeongnam province in 1999 and 2000. Nineteen species of 16 genera in 12 families including Vroleucon gobonis, Frankliniella occidentalis, F. intonsa, Tetranychus cinnabarinus, Thrips parmi, and Dolycoris baccarum were identified from safflower. Ten species of 7 genera in 6 families including F. occidentalis, F. intonsa, and Nysius plebejus from yam, 8 species of 8 genera in 6 families including Eumeta minuscula from hardy rubber-tree, 16 species of 14 genera in 11 families including F. occidentalis, F. intonsa, T. kanzawai, T. urticae and Myzus persicae from Angelica gigas, 15 species of 14 genera in 11 families including Spodoptera exigua, and S. litura from balloon flower.

Streptomyces 속 균주 HA-40이 생산하는 내열성 α-Amylase의 효소학적 성질

신운섭,이동희,이현우,권태종,정호권 建國大學校 附設 産業技術硏究所 1988 논문집 Vol.13 No.-

토양으로부터 분리한 Streptomyces 속 균주 HA-40이 생산하는 내열성 α-amylase의 효소학적 성질을 조사한 결과는 다음과 같다. 효소의 작용 최적 온도는 65℃였으며 activation energy 는 16.9Kcal/mole이었고 60℃에서는 안정하였으나 70℃에서는 30분 처리로 약 50%, 1시간 처리로 약 75%가 실활하였다. 그러나 ??를 0.1mM농도로 첨가한 경우엔 70℃ 에서 1시간 처리하여도 잔존활성도가 55%이상으로 열변성에 대한 ??의 보호효과가 있었다. 본 효소는 pH7에서 활성이 가장 강하였으며 안정성도 가장 높았다. 그리고 금속이온 중에서 ??의 첨가로 효소활성이 증대되었으며 ??, ??, ??등에 의해서 활성이 저해되었다. 각종 효소저해제는 대부분 영향을 미치지 못하였으나 EDTA가 반응액 중에 공존하면 효소활성이 강하게 저해되었다 본 효소는 maltotriose이하의 당류에 대해서는 분해력이 없었으며 amylose에 대한 환원당 생성력을 100으로 하였을때 soluble starch 108, amylopectin 94, glycogen 87, dextrin 48, potato starch 25, corn starch 18로 생전분에 대한 분해력은 soluble starch에 비해서 1/4∼1/5 정도밖에 되지 않았다. 그리고 soluble starch에 대한 Km 치는 1.9㎎/㎖였다. The properties of a thermostale α-amylase produced from Streptomyces sp. strain HA-40, isolated from soil, were investigated. The optimal temperature of the enzyme was 65℃ and the enzyme was stable below 60℃. However, at 70℃ about 75% of the activity was lost after 1hr treatment, but by the addition of ?? in the concentration of 0.1mM only 45% of the activity was lost. The enzyme was most active and stable at around pH 7. The activity of the enzyme was increased by the addition of ??, but depressed by ??, ??, and EDTA. The enzyme could be hydrolyze soluble starch, amylose, amylopectin and glycogen well, and could also digest dextrin and raw starch. The Km value for soluble starch was 1.9㎎/㎖.

유한요소법에 의한 원형드로오비드의 인출특성에 관한 연구

신양호,심현보 한국공작기계학회 1997 한국생산제조학회지 Vol.6 No.3

In this study, the drawing characteristics of circular drawbead are examined with the plane strain elastic-plastic FE Method. Both the clamping load and the drawing load are investigated by varying the process variables such as drawbead radius, closing depth and friction condition. The effective strain induced by the draw bead is also investigated. In order to verity the results, the computed results are compared with the existing experimental results. It has been found that both the clamping load and drawing loads are related with the geometry of the bead rather the lubrication conditions.

경남지역의 채소류와 화훼류 해충에 관한 조사

신현열,이동운,추호렬,박정규 경상대학교 농업생명과학연구원 2001 농업생명과학연구 Vol.35 No.-

본 연구는 1996년 경남지역 주요 채소류와 화훼류 작물에 발생하는 해충과 기타 주요 해로운 동물의 종류를 알아보기 위하여 수행하였다. 오이에서는 오이총채벌레와 꽃노랑총채벌레를 포함하여 7과 8속 10종이 확인되었으며, 양파에서는 알톡토기를 포함한 4과 4속 4종이 조사되었고, 배추에서는 배추좀나방과 담배거세미나방을 포함한 10과 13속 14종이 확인되었다. 거베라에서는 아메리카잎굴파리와 점박이응애, 담배거세미나방을 포함한 8과 8속 10종이, 글라디올러스에서는 명주달팽이와 민달팽이, 들민달팽이를 포함하여 6과 7속 8종이, 국화에서는 민달팽이와 꽃노랑총채벌레를 포함한 10과 13속 14종의 해충이 확인되었다. Insect pests were surveyed on the major vegetable and floricultural crops in Gyeongnam province in 1996. In addition, some other important animal pests were included in this survey. Ten species of 8 genera in 7 families including Thrips palmi and Frankliniella occidentalis were found from cucumber; 4 species of 4 genera in 4 families including Bourletiella hortensis from onion; 15 species of 14 genera in 11 families including Plutella xylostella and Spodoptera litura from Chinese cabbage; 10 species of 8 genera in 8 families including Liriomyza trifolii, Tetranychus urticae and S. litura from gerbera; 6 species of 7 genera in 8 families including Acusta despecta, Incilaria contusa and Deroceras varians from gladiolus; and 14 species of 13 genera in 10 families including I. contusa and F. occidentalis from chrysanthemum.