Notes on bird species newly recorded in Korea

Kim, Hwa-Jung,Kim, Dong-Won,Hur, Wee-Haeng,Jang, Byoungsoon,Lee, Yun-Kyung,Kwon, In-Ki,Park, Jong-Hyun,Park, Jong-Gil,Kang, Chang-Wan,Kim, Eun-Mi,Choi, Soon-Kyoo,Kim, Han-Kyu The National Institute of Biological Resources 2020 Journal of species research Vol.9 No.4

A total of 527 species of birds have been recorded in Korea. We summarize the records of three genera and six species that have been newly reported in Korea, discovered through the avian monitoring programs carried out by The National Institute of Biological Resources from 2013 to 2016. These six newly recorded species are; Ring-necked Duck (Aythya collaris), Lesser Scaup (Aythya affinis), Bufflehead (Bucephala albeola), Black-winged Kite (Elanus caeruleus), Mongolian Lark (Melanocorypha mongolica) and Crested Myna (Acridotheres cristatellus). One Ring-necked Duck was observed on March 23, 2014 in Jungrangcheon Stream. One male Lesser Scaup was recorded on February 24, 2014 in Gyeongpoho Lagoon. A male bufflehead was first seen in Yeongrangho Lagoon on January 26, 2013. The Black-winged Kite was first observed on January 23, 2013 at the Gangseo Wetland Ecological Park. One Mongolian Lark was also recorded on May 11, 2016 and May 12, 2017 in Marado Island. The Crested Myna was first observed on April 20, 2016 in Seomando, Island.

1축 연신된 선형 저밀도 Polyethylene의 전기전도 특성

박재훈,이종규,김영전 충남대학교 자연과학연구소 1987 忠南科學硏究誌 Vol.14 No.1

The measurements of electrical conduction had been investigated as a function of time, applied electric field, and temperature to investigate the elongated effects of the Linear Low Density Polyethylene (LLD-PE) films. The samples were drawn uniaxially at room temperature, and the rate of drawing was 13mm/mm. Films were fixed to metallic frames after elongation to maintain tension. As a result of elongation the rate of conduction decay current was increased and the electric conductivity and conduction activation energy were decreased. These results might be due to the generation of deep traps for electrons and the increase of trap sites by drawing. The decrease of activation energy was caused by the change of trap depth. These results might be due to as the changes of internal structure and morphology by the elongation of polymer.

瘀血病態模型 개발에 관한 硏究

朴耕模,朴種鉉,安圭錫 대한동의병리학회 1999 동의생리병리학회지 Vol.13 No.1

현재까지 개발된 어혈 동물모형들은 각각 그 특성이 달라 약물의 활혈화어 효과를 검증하는데 일괄적으로 적용시킬 수 없는 난점이 있었고, 실험상 변수의 통제가 어렵고 정확한 기전을 밝히기도 어려울 뿐 아니라 비용이 많이 들어 대규모적인 스크리닝을 하기가 힘들었다. 따라서 이들 모형의 차이점을 비교검토할 필요가 있고 이 문제점들을 보완해줄 in vitro에서의 새로운 병태모형이 필요하여 본 연구를 실행하였다. 동물을 이용한 어혈 모형의 경우, 혈전증모형은 출혈기전과 응고기전과 관련있는 어혈모형으로 생각되며, HA와 dextran으로 유발한 고점도혈증은 응고기전과 직접 관련되는 모형이라기 보다는 혈액의 점성이 증가되어 혈의 흐름이 정체되어 나타나는 혈어모형에 가깝다고 볼 수 있다. 압상어혈모형은 대퇴부의 압박으로 인한 국소 어혈모형이며, 전신의 혈류상태에는 큰 영향을 미치지 않았다. 또한, in vitro에서는 ECV304 cell line과 ECVPAR cell line에서의 세포부착효과, Angiogenic lumen formation, MMP-9, uPA의 발현양상, Integrin αvβ3, LFA-1, ELAM-1의 발현 등을 지표로 삼아 혈관신생을 통한 어혈병태모형을 구축하였으며, 이 모형은 기존 동물에서의 어혈모형의 문제점들을 보완할 수 있을 것으로 생각된다. This experimental study was carried out to characterize in modern medical understanding the concept of Blood Stasis as proposed in the traditional medical system of Korea, Japan, and China. Another objective was to construct a new model of blood stasis via in vitro. We divided the original model of blood stasis into three catergories: thrombosis, high blood viscorsity and trauma. The thrombosis model was induced by endotoxin and is related to the mechanisms of bleeding and coagulation. the high blood viscosity model was induced by hydrocortisone acetate and dextran and is related to the hemodynamic derangement rather than the bleeding and coagulation. the trauma model was induced by compression and is related to the local and hematological change by the compression of the thigh of rats. Finally, we induced an in vitro blood stasis model using ECV304 and ECVPAR cell lines. The focus being inducing angiogenesis and correlating the mitigating factors of cell adhesion, angiogenic lumen formation, mRNA expression of MMP-9 and uPA, and expressions of integrin αvβ3, LFA-1 and ELAM-1. We expect that this model may complement the problems associated with the original models.

韓醫學的 診斷類型에 따른 韓藥方劑의 抗癌 및 免疫調節作用에 미치는 影響

朴鐘鉉,金楨氾,崔昇勳,安圭錫 대한동의병리학회 1994 동의생리병리학회지 Vol.9 No.1

연구배경 : 암은 사망의 주요한 원인이 되는 질환으로서, 우리나라에 있어서도 급격히 증가하는 추세이다. 한의학에서는 암의 유형을 크게 간울기체형, 기체혈어형, 비허습담형, 음허내열형 등으로 분류하고 있는데, 각 유형에 응용할 수 있는 소요산, 소복축어탕, 사군자탕, 육미지황탕의 항암효능을 비교 연구함으로써, 암치료에 대한 한약재의 임상활용도를 높이고자 함. 방법 : Mouse에 Sarcoma-180으로 복강암을 유발한 후, 약제를 21일 간 투여하고 생존율, T cell, B cell, 혈청항체가, IL-2 생산능, NK cell의 세포살상능을 측정하였다. 결과 : 생존기간의 연장효과는 모든군에서 증가하는 경향이 있었으나 유의성이 없었고, T cell 및 B cell은 모든군에서 증가하였으며, 임파구 증식반응 및 IL-2 생산능은 사군자탕과 육미지황탕에서, NK cell 활성도는 소복축어탕 엑기스 투여군에서 유의성이 있었다. 결론 : 이상으로 보아 이들 처방은 면역조절작용을 통한 항암효과가 있을 것으로 볼 수 있으며, 변증분형에 따라 처방을 달리해야 함을 알 수 있다. In order to investigate the effects of Formules according to Pattern Identification on anti-tumor and immunodulatory reaction to the ICR and C57BL/6 mice which have abdominal tumor after Sarcoma-180 cells were transplanted, the extracts of herbal medicines above mentioned were orally administered to the mice for 21 days to observe the extention of survial duration of the mice, quantitation of T cells and B cells, productivity of interleukin-2, lymphocytes transformation, hemagglutinin titer and hemolysin titer and activity of splenic natural killer cells. The results are summarized as follows ; 1. In the effect of life extention, all groups appeared to survive longer than the Control group, which are not meaningful. 2. Considering T cell and B cell content, all groups had a meaningful increase in both T cell and B cell (P<0.01). 3. Considering serum antibody titer was no significant difference between all groups. 4. In lymphocyte transformation marked a significant increase the sijunzitang-medicated mice group, marked a significant (P<0.01), and showed a significant increase the mice group medicated with Liuweidihuangtang (P<0.05). 5. As for the productivity of interleukin-2, showed a significant increase the mice group medicated with Sijunzitang ans Liuweidihuangtang (P<0.05). 6. In the effect of activity of NK cells, Shaofuzhuyutang-medicated mice group had a meaningful increase (P<0.05).

MOSFET의 부정합에 의한 출력옵셋 제거기능을 가진 윤곽검출용 시각칩의 설계

박종호,김정환,이민호,신장규 한국센서학회 2002 센서학회지 Vol.11 No.5

인간의 망막은 효율적으로 주어진 물체의 윤곽을 검출할 수 있다. 본 연구에서는 윤곽검출에 관여하는 망막 세포의 기능을 전자회로로 모델링하여 윤곽검출기능을 가지는 CMOS 시각칩을 설계하였다. CMOS 제조공정 중에는 여러 가지 요인에 의해 MOSFET의 특성이 변화할 수 있으며 특히 어레이로 구성되어 각 픽셀의 신호를 출력하는 readout 회로에서의 특성변화는 출력옵셋으로 나타난다. 하드웨어로 입력영상의 윤곽을 검출하는 시각칩은 다른 응용시스템의 입력단에 사용되므로 이러한 옵셋은 전체 시스템의 성능을 결정하는 중요한 요소이다. 본 연구에서는 이와 같은 출력단의 옵셋을 제거하기 위해 CDS(Correlated Double Sampling) 회로를 이용한 윤곽 검출용 시각칩을 설계하였다 설계된 시각칩은 CMOS 표준공정을 이용하여 다른 회로와 집적화가 가능하며, 기존의 시각칩보다 신뢰성 있는 출력특성을 나타냄으로써, 물체의 윤곽을 이용하는 물체추적, 지문인식, 인간 친화적 로봇시스템등의 다양한 응용 시스템의 입력단으로 적용될 수 있을 것이다. Human retina is able to detect the edge of an object effectively. We designed a CMOS vision chip by modeling cells of the retina as hardwares involved in edge detection. There are several fluctuation factors which affect characteristics of MOSFETs during CMOS fabrication process and this effect appears as output offset of the vision chip which is composed of pixel arrays and readout circuits. The vision chip detecting edge information from input image is used for input stage of other systems. Therefore, the output offset of a vision chip determine the efficiency of the entire performance of a system. In order to eliminate the offset at the output stage, we designed a vision chip by using CDS(Correlated Double Sampling) technique. Using standard CMOS process, it is possible to integrate with other circuits. Having reliable output characteristics, this chip can be used at the input stage for many applications, like targe tracking system, fingerprint recognition system, human-friendly robot system and etc.

국소 광적응 기능을 가지는 윤곽검출용 32×32 방사형 CMOS 시각칩의 설계 및 제조

박대식,박종호,김경문,이수경,김현수,김정환,이민호,신장규 한국센서학회 2002 센서학회지 Vol.11 No.2

국소 광적응 기능을 가지는 윤곽검출용 시각칩을 픽셀수 32x32의 방사형 구조로 CMOS 공정기술을 이용하여 설계 및 제조하였다. 생체의 망막은 넓은 범위의 입력 광강도에 대해서 물체의 윤곽을 검출할 수 있다. 본 연구에서는 시세포, 수평세포, 쌍극세포로 이루어진 망막의 윤곽검출 기능을 모델링하여 윤곽검출용 인공시각칩을 설계하였다. 국소 광적응을 위해, 입력 광강도에 따라 수용야의 크기를 국소적으로 바뀌게 하였다. 아울러 단위셀을 방사형으로 배치함으로써 영상데이터의 양을 감소시킴과 동시에 칩의 중심부분으로 갈수록 해상도가 높아지도록 설계하였다. 설계된 칩은 0.6 ㎛ double-poly triple-metal 표준 CMOS 공정기술을 이용하여 제조되었으며. HSPICE 시뮬레이션으로 성능을 최적화 시켰다. A 32x32 pixels foveated (linear-polar) stucture retina chip with the function of local-light adaptation for edge detection has been designed and fabricated using CMOS technology. Human retina can detect a wide range of light intensity. In this study, we use the biologically-inspired visual signal processing mechanism that consists of photoreceptors, horizontal cells, and bipolar cells in order to implement the function of edge detection in the retina chip. For a local-light adaptive function, the size of receptive field is changed locally according to the input light intensity. The spatial distribution of sensing pixels in the foveated retina chip has the advantages of selective reduction of image data and good resolution in central part to carry out the elaborate image processing with still enough resolution in the outer parts. The designed chip has been fabricated using standard 0.6 ㎛ double-poly triple-metal CMOS technology and optimized using HSPICE simulator.

폐석고와 Fly Ash를 재활용한 차수재의 배합비 산정을 위한 연구

이종우,권혁,임남웅,박규홍 중앙대학교 건설환경연구소 2000 環境科學硏究 Vol.11 No.2

This study was conducted to estimate experimentally the optimal mixing ratio of landfill liner materials using waste plaster and fly ash. Feasibility of reuse of waste plaster and fly ash was investigated as well as the use of cement, soil, and natural bentonite as landfill liner materials. Soil property index tests and compaction tests were performed to see the property of the soil used in this study. After selected materials were mixed with varied mixing ratio, hydraulic conductivity tests and unconfined compressive strength tests were conducted to see whether new liners using waste materials could meet the criteria as landfill liner regulated by the government. The optimal mixing was suggested as 30% of fly ash, 60% of soil used in this study, 3% of cement, 7% of bentonite to obtain 9.8×10-8 ~1.1×10-6 cm/sec of hydraulic conductivity and 6.2~15.2kg/cm2 of compressive strength.

脈象形成에 對한 基礎的 硏究

安圭錫,朴鍾鉉 대한동의병리학회 1993 동의생리병리학회지 Vol.8 No.-

연구배경 : 맥진은 고대로부터 장기간에 걸쳐 임상경험을 통하여 축적되고 체계화 되어 이루어진 진단법으로, 한의학의 변증시치에 있어서 필수불가결한 객관적 근거로 인정받고 있다. 맥상을 분석하여 인체에서의 상황을 판단하려면 맥현상에 대한 기본적인 이해가 선행되어야 할 것으로 보여 맥상 형성에 대한 기초적 연구를 하고자 하였다. 방법 : 맥에 대한 한의학 문헌을 근거로 하고, 이를 물리학적인 혈류역학측면에서 맥상의 형성원리, 맥형성의 구성요소 및 맥상과 내외부 환경과의 관계에 대하여 연구 하였다. 결과 : 맥은 파동이며 인체 내부의 기가 맥이라는 파동의 형태로 변이되어 표출되는 간접적 반응이다. 맥상은 심장, 혈관, 혈액의 구조적 요소에 맥기의 기능적 요소가 결합하여 표현되는 것이며, 이 사자는 외내적 환경에 대한 구체적 표현이다. 결론 : 맥은 인체내외의 환경에 대한 인체내부 기의 구체적 표현이며 파동의 형태로 변이되어 표출되므로 맥진시에는 이러한 점을 염두에 두어야 할 것으로 판단된다.

大學敎育의 評價方法 改善方案에 關한 硏究

李揆成,權相善,金大倫,朴哉林,林鍾吉,朴英淑 新羅大學校 1982 論文集 Vol.12 No.-

The present study aims to develop of evaluation method for college education. This study consiste of two parts: to identify the corelation between the freshmen's scores of pre-test for entrance examination and their scores of freshmen's year, and to make suggestions for the improvement of evaluation method in college on the basis of the former study results. Seen from the above mentioned aspects of this study, this study has meanings in its seek for a rational curriculum improvement and in its research of the pilot curriculum which presupposes the alleged system of limited graduation quota. This research which is conducted by above mentioned purpose andmeanings can be summerized as follows; 1) The freshmen's mean score of the-pre-test of college entrance examination is 192. 38. Among the departments of natural scienc attained the most higher score(204.22). and department of arts and gymnastics 162. 02 which is below average score. 2) In the achivements of the freshmn'e year the departments of natural sciences obtained the best results, followed by the departments of arts and gymnastics, education, and cultural aciences in oder. 3) There is no corelation between the pre-test scores of college entrance examination and the college achivement results. 4) The mean scores of the major and teaching subjects geneally increas as they go up into the advanced school years. 5) Each department has their own method of evaluation. 6) Teaching syllabus is asked to be presented whit the direction of clas, contents, purpose, and specific items of evaluation. 7) Achivements of college work must be evaluated by the normal distribution curve with the facts about specific factors of the study and students group taken into consideration.

154kV용 활선 안전 경보기 개발에 관한 연구

정민규,조현광,우종수,안창회,서영석,김응태,박창기,오세득 영남대학교 공업기술연구소 2000 工業技術硏究所論文集 Vol.28 No.1

In this report we developed a high voltage alarm for the safety of workers who check and repair the 154kV power line. This high voltage alarm we developed is attached on workers' helmet and alarms automatically in order to let workers know when workers work over the safety distance near 154kV power line. Until now the exact safety distance hasn't been regulated and high voltage alarm we've been using was for the range of 6∼22.9kV power line. We fabricated this high voltage alarm on the basis of electric density and actual measurement of power line. The experimental result was that high voltage alarm at 66kV power line alarmed near 90cm, at 154kV power line alarmed near 160cm from the line. Accordingly, we developed the new high voltage alarm which is operated in the range of 66∼154kV power line.