안구의 비색소성 모양체 상피에서 발생한 유두상 선암종 -1예 보고-

최현주,최영진,이연수,이은정,강석진,김병기,심상인 대한병리학회 1998 Journal of Pathology and Translational Medicine Vol.32 No.12

은 함유 활성탄소섬유의 기공특성 및 이에 의한 NO 제거에 관한 연구

박수진,김병주,Kawasaki, J. 한국화학공학회 2003 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.41 No.5

본 연구에서는 활성탄소섬유(activated carbon fiber, ACF)의 표면에 전해도금 방법으로 은(Ag)을 도입하여 Ag가 NO 제거에 미치는 영향을 고찰하였다. Ag가 도입된 ACF 표면특성은 X-ray diffraction(XRD)와 scanning electron microscope(SEM)을 이용하여 관찰하였으며, N₂/77 K 등온 흡착 특성은 BET식과 Boer의 t-plot을 이용하여 확인하였고, NO 제거효율은 가스 크로마토그래프를 이용하여 분석하였다. 실험결과 도금 시간이 증가함에 따라 ACF 표면의 Ag의 양은 점차 증가하였으나, ACF의 흡착 특성인 비표면적, 기공부피 등의 기공구조는 조금씩 감소하는 경향을 보였다. NO 제거효율 또한 초기에는 도입된 Ag의 양에 따라 증가하다가, 일정 도금량 이후에는 반대로 감소하는 경향이 나타났다. 이러한 결과는 ACF 표면에 도입된 Ag이 NO 제거에 도움을 주지만 그 양이 증가됨에 따라 ACF의 기공을 막아 ACF의 NO 흡착특성을 감소시키기 때문으로 판단된다. 결론적으로 Ag가 도입된 ACF의 NO 제거반응은 Ag의 양과 ACF의 흡착특성에 의해 결정된다고 판단된다. In this study, the activated carbon fiber (ACF), on which Ag had been introduced by an electroplating technique, was used to remove NO. Surface properties of the ACF were determined by X-ray diffraction (XRD) and scanning electron microscope (SEM). N₂ adsorption isotherms at 77 K were investigated by BET and 1-plot methods to characterize specific surface areas and pore volumes, and NO removal efficiency was confirmed by gas chromatographic technique. As experimental results, Ag content on the ACF increased with plating time. However, adsorption pmpenies such as BET specific surface area and total pore volume were somewhat deneased in the presence of silver. NO removal efficiency of dl Ag-ACF was higher than that with untreated ACF and increased with Ag content. However, decrease in the extent of NO removal was show in the excessively plated ACE which might be associated with the blocking of micropores in the carbon: therefore, an optimal Ag content exits in the presence of initially-well-developed micropores to lead increase in efficient NO removal ability of the ACF.

국내에서 유행하는 HIV의 전파 경로에 따른 Subtype 분포

이주실,남정구,김성순,강춘,최병선,김옥진,박미선,성봉모,서순덕,전수경,변승옥,신영오,조해월 대한감염학회 2001 감염 Vol.33 No.5

Background : Previous data have been reported that subtype B is prevalent in South Korea, but neither the extent nor the proportion of subtypes could be evaluated. This study was designed to analyze the distribution of HIV-1 subtypes, temporal instructions and transmission dynamics between epidemiological groups. Methods : 1,280 Koreans had been diagnosed as HIV seropositive during the period 1985 to 2000. Among them, 134 individuals were selected for this molecular epidemiological study. 134 DNAs were isolated from uncultured or cultured peripheral blood mononuclear cells. V3-V5 (0.7 kb) fragment of HIV-1 env gene was amplified by nested polymerase chain reaction and was sequenced. Results : HIV-1 isolates from thirty-seven homosexuals were all subtype B (100%). On the other hand, 66 isolates from 94 heterosexuals were subtype B (70%) and 28 were non B subtypes (30% : 13 A, 4 C, 2 D, 8 E , 1 G). Only subtype B strains were isolated from 73 males who were infected with HIV inside Korea while 16 B and 20 non B subtype strains were isolated from 36 males who were HIV infected outside of Korea. However, B and non B strains were isolated half and half from females who were infected inside Korea except one. Conclusion : The HIV-1 subtype B strains are prevalent in Korea from the early HIV infection until present in both homo and heterosexuals. Non B strains have been transmitted from men who were infected outside Korea to their spouses and casual partners. So, we need further study to monitor subtype B and non B HIV transmission in epidemiological groups of Korea, (Korean J Infect Dis 33:311∼318, 2001)

나노구조형 Carbon/TiO_2 광촉매의 제조 및 특성

박수진,김병주,이종문 한국공업화학회 2003 공업화학 Vol.14 No.3

본 연구에서는 나노구조형 cellulose/TiO_2를 탄화시켜 나노구조형 carbon/TiO_2 광촉매를 제조하였으며, 이때 담지체인 carbon과 촉매인 TiO_2의 미세구조가 carbon/TiO_2 광촉매의 광활성에 미치는 영향에 대하여 고찰하였다. Carbon/TiO_2의 제조 과정에 따른 화학적 조성의 변화는 EDS를 통해 알아보았으며, 표면 관능기는 FT-IR을 통하여 분석하였다. 또한 시료의 미세구조와 비표면적은 XRD와 BET를 통해 각각 알아보았으며, 제조한 광촉매의 광활성은 UV하에서 전분 분해실험을 통해 알아보았다. 실험 결과, 탄화과정 후에도 TiO_2상은 anatase형을 취하고 있으며, 제조된 carbon/TiO_2 광촉매는 순수한 TiO_2보다 다소 높은 광활성을 나타내는 것을 알 수 있었다. 이는 탄화과정이 진행됨에 따라 초기 담지체인 cellulose의 질량손실에서 기인된 carbon표면의 TiO_2양의 상대적인 증가와, TiO_2의 결정 크기의 증가로 인한 결정의 광흡수가 증가 때문인 것으로 사료되며, carbon/ TiO_2가 담지체의 특성 때문에 순수한 TiO_2보다 상대적으로 큰 비표면적을 가지기 때문인 것으로 사료되어진다. In this work, nanostructured carbon/ TiO_2 photocatalysts were made by the carbonization of cellulose/ TiO_2 which was prepared by anchoring the TiO_2 on the surfaces of cellulose particles in order to improve the photoactivity of pure TiO_2. The surface properties of the photocatalysts were studied in the context of FT-IR and XRD measurements. The specific surface areas and elemental compositions of the photocatalysts were studied in volumetric N_2/77 K measurement and EDS, respectively. The photoactivities of the photocatalysts were evaluated using a photo-decomposition method under UV light. The experimental results showed that the TiO_2 crystal phases of the carbon/ TiO_2 had an anatase-from revealed by WAXRD. The carbon/ TiO_2 was observed to have a better photoactivity than that of pure TiO_2. This result was probably due to the relatively increased specific surface areas of the carbon/ TiO_2, compared to pure TiO_2 and to the growth TiO_2 crystals that caused increased light absorption of TiO_2 in carbon/ TiO_2.

부분편향 시료에 대한 기약 Tensor해석

孫基洙,金榮柱,姜昞燮,李壬洙 慶北大學校 1989 論文集 Vol.48 No.-

Depending on structure and electronic resonances the second-order non-linear susceptibility Χ^(2) is usually measured by second-harmonic generation. The macroscopic non-linear optical susceptibility Χ^(2) for a system of partially oriented molecules is written as the ensemble average of molecular hyperpolarizability tensor β. The orientational distribution of these molecules is described by a probability function expanded in Wigner matrices. It confirmed that Χ^(2) has seven non-vanishing conponents for a rotationally invariant system. For a molecule with C_2υ we compared average orientation angle of sum-frequency generation with of SHG, determined elements β_zzz β_xzx of the dominant molecular tensor components and caculated average orientation angle.

住民의 價値觀과 政策受容度에 關한 硏究

金秉燦,金學守,李相魯,鄭正佶,金元主 경북대학교 교육대학원 1973 논문집 Vol.4 No.-

1. Introduction Governmental policies should receive strong support from the general public to be effectively implemented. Therefore to find some clue as to how public policies might receive nation-wide support is very important. As the research objective was to find some factors which effect degree of policy acceptability, we interviewed 1,179 persons(633 citizens of Tae-gu city and 546 persons from rural communities in Kyung-puk Province) from July 10 to August 20, 1973, by stratified sampling. Stratifying criteria were sex, age, financial assets and educational background. X^2 was used as a tool to test the hypotheses that there may be differences in values and degree of policy acceptance among persons of different strata and that there may be differences in degree of policy acceptance among persons who have different values. 2. General Tendency Forty percent of those interviewed choose the item "None" among the choices to the following question; Question; Which one do you choose, if you can choose only one of three? Answer; 1) Money or wealth 2) Power 3) Honour 4) None Let us call the persons who choose 1) "Money-oriented" and so "Power-oriented", "Honour-oriented". More persons interviewed preferred a self-restraining life to a hedonistic life, and egoistic, to altruistic. Egoists here means the persons who choose item 1, 2, 3, and altruists, 4 and 5 in the following question; Question; For whom do you think you live? Answer; 1) My-self 2) Children 3) Ancestor 4) Community 5) Nation or country More persons believed that the moral order of a society is more important than economic affluence. Almost seventy percent of the interviewed preferred that public policies be formulated for a better future life for the people than for immediate present well-being. Economic policies including those for increasing national income and increasing export were believed to be goood and effective in their implementation. However, taxes were regarded as too heavy. This shows that people rely much on the government for economic development on the one hand, but do not recognize their responsibilities to support those governmental efforts through taxes on the other. The Sae-Ma-Ul movement received as strong support as the economic policies and city development policies received sufficient support. But educational policies such as school expenses and ethics and moral education were denounced, as were the public health policies. 3. Differences among Strata ⑴ Region: people of rural communities regarded power and honour with more value than their urban counterparts, while urban people were more money-oriented. Rural people accepted tax policies more readily than did urban people, but they denounced the public health policies and educational policies mentioned above more severely than urban people. ⑵ Sex: men were more power and honour-oriented than women. Men preferred the moral order of scociety more than women, while women preferred economic affluence more than men. Export increasing policies, public health policies and school expense policies were accepted more readily by women. However, city development policies were accepted more readily by men. ⑶ Education: the more educated persons were more honour-oriented, emphasized the moral order of society and the better future life of the people more strongly than less educated persons. All these reflect the effects of moral education. However, from non-educated persons to high school graduates, the more educated the more money and power-oriented they were, while college graduates were far less money and power-oriented than middle or high school graduates. This points out the good effects of college education and some problems of middle and high school moral and ethics education. The more educated regarded the present compulsory educational system as more effective and school expences less expensive than the less educated. However, college graduate gave less support to the new school entrance system, while they gave the highest support to the Sae-Ma-Ul movement. ⑷ Age: the older persons emphasized the moral order of society more frequently and showed more political apathy than younger persons. They also accepted the public health policies more readily than the younger people. ⑸ Assets: the richer persons were more honour-oriented and regarded school expenses as less expensive than the poor persons. 4. Correlation between Values and Policy Acceptance ⑴ Money-oriented persons(who choose Money among given items of Money, Power, Honour and None) were much more egoistic (mentioned above in General Tendency) than the honour-oriented persons. ⑵ Honour-oriented persons accepted more readily than the money-oriented persons policies for increasing national income, reestablishing law, moral order and a better atmosphere of a society and the Sae-Ma-Ul movement (three of five policies analized in detail to test our hyphotheses about correlation between people's values and the degree of policy acceptance). Altruists supported policies for increasing national income and city development policies more strongly than the egoists. Therefore we assume that honour-oriented persons or altruists accept the public policies more readily than money-oriented persons or egoists.

GT rotary file을 이용한 만곡 근관형성시 작업 효율 및 file 변형 발생에 관한 연구

신주희,백승호,배광식,임성삼,윤수한,김병현 대한치과보존학회 2001 Restorative Dentistry & Endodontics Vol.26 No.5

Root canal preparation process is of utmost importance in successful treatment of root canal. Also, one of the most important purpose of the root canal preparation is to enlarge the root canal three dimensionally without changing the curvature of the root canal. However, as the curvature of the root canal increases, there are many difficulties involved in formation of optimum root canal. Therefore, in order to solve the above mentioned problems, new developments in methods of root canal preparation and equipments for such purposes were made. Recently, vigorous studies about newly introduced engine-driven nitckel-ti-tanium rotary file are conducted. As shown in research results to dates, it is well established that the use of nickel-titanium file is better suited for curved root canal than stainless steel file in maintaining the curvature of root canal and reducing the deformation of root canal. However, it is also acknowledged that there are a few discrepancies in research results according to protocol, due to failure to remove variables in experiments. In addition, although it is recommended by the manufacturer that the GT rotary file should maintain a low rotational speed of 150∼350rpm and 'light pressure' as light as not to break the lead of a pencil, academic studies about the vertical force which is not yet standardized are not sufficiently explored. Therefore, this research devised and utilized a special research equipment to standardize the appropriate range of vertical force for GT rotary file through experiments by breaking of the lead of a pencil as expressed by the manufacturer and to accurately measure factors involved through repeating and recreating the environment of root canal preparation. Forming nine experimental groups by varying the vertical forces (150g, 220g, 300g) and rpm (150rpm, 250rpm, 350rpm), the effects of changing vertical forces and rpm on working efficiency were measured in terms of time expended in root canal preparation by crown-down method using a transparent resin block with 35 degree curvature and GT rotary file (z-test). The following research using this special research equipment that involved nine experimental groups and varying the vertical force for root canal preparation from 300g which is within the normal vertical force range to 700g and 1000g which fall outside the normal rpm range. The results were as follows : 1.Analysis of the experiment results revealed that the tome spent in root canal preparation decreased as the vertical forces and rpm increased (p<0.05). Also, the effects of rpm were greater than those of the vertical forces within the normal vertical force range (β-weight test) . 2.Observation of the deformation of GT rotary file revealed that deformation increases in a direct correlation with the vertical force increase and in a reverse correlation with the rpm decrease, In the case of the vertical forces close to the normal range, the probability of GT rotary file deformation were quite different depending on the rpm changes. In the case of◎eater tier◎cal forces, the occurrences of deformation of the file were more frequent regardless of the rpm changes. 3.Deformation and breakage of file were also commonly observed in the expended time measurement experiments and GT rotary file deformation experiments in which low speed rpm (150rpm) was used and at the curved portion of the resin block. Key words : GT rotary file, Crown-down method, Working efficiency, Vertical force, Rpm, Deformation and breakage of file

조기 후두암의 Docetaxel-Cisplatin 유도 화학요법에 대한 임상연구

정주섭,권보란,최영진,왕수건,이병주,조군제 부산대학교 병원 암연구소 2009 부산대병원학술지 Vol.- No.25

구연산젤법에 의한 YAG분말의 합성

沈秀萬,鄭炳周 홍익대학교 산업기술연구소 1998 産業技術 Vol.8 No.-

Citrate gel was prepared by drying a solution that Y and Al nitrates had been dissolved in a molar ratio of Y:Al=3:5 in citric acid solution. The gel was found to completely decompose at ∼500℃. Since the citrate function group made the chemical composition of the particles relatively homogeneous, crystallization occurred at 800℃ resulting in YAG phase and a small amount of metastable YAH. However, after calcination at 900℃ for 4 hr, well-crystallized single phase YAH powder could be obtained.

고추 잎점무늬병ㆍ역병 복합 저항성 계통육성

김주영,한정혜,황희숙,김병수 경북대학교 농업과학기술연구소 2000 慶北大農學誌 Vol.18 No.-

1999년도에는 KC47 × KCB14, KC220 × KC268 조합의 F2 및 여교배 집단과 KC47-1 × KC263(AC2258), KC47-1 × KCB13-2-1, KC47-1 × KCB13-4-2 조합의 F3집단에 대하여 잎점무늬병과 역병을 차례로 접종, 복합저항성 개체를 선발하여 차세대를 육성하였다. 2000년도에는 같은 조합의 F3 및 F4세대에 대하여 잎점무늬병과 역병에 대한 저항성을 검정하여 복합 저항성인 개체로부터 차세대 종자를 확보하였다. 선발세대의 경과에 따라 두 가지 병에 대한 저항성에서 현저한 진전이 관찰되었다. F2 populations of crosses KC47-1 (PI244670) x KCB14-2-2-3-2 (PI201234), KC220-1 x KC268 and F3 bulk populations of the crosses KC47-1×KC263 (AC2258), KC47-1×KCB13-2-1 (PI201232), KC47-1×KCB13-4-2 (PI201232), either one parent of which was resistant to Phytophthora blight, were tested for both gray leaf spot and Phytophthora blight by serial inoculation with Stemphylium solani or a mixture of S. solani and S. lycopersici, and P. capsici in 1999. In 2000, F3 and F4 lines or populations developed from the respective F2 or F3 selections in the previous year were evaluated for resistance to both disease. A significant progress in resistance to both disease was achieved by selection.