• 제목/요약/키워드: Sun:HeI

검색결과 102건 처리시간 0.02초

SPECTROSCOPIC OBSERVATION OF THE SOLAR ACTIVE REGIONS IN HeI 10830 ${\AA}$ LINE

  • TOHMURA ICHIROH;KITAI REIZABURO;SUEMATSU YOSHINORI;SOLTAU DIRK
    • 천문학회지
    • /
    • 제29권spc1호
    • /
    • pp.333-335
    • /
    • 1996
  • Here we report the results from spectroscopic observations of soloar active regions in the HeI 10830 ${\AA}$ line at the German Vacuum Tower Telescope(VTT) in Tenerife during the August 199:3 International EFR(Emerging Flux Region) Campaign. Four active regions in various stages of their evolution, i.e., NOAA7558, 7560, 7561, and 7562, were ovserved on 10 August 1993. From the observed HeI 10830 ${\AA}$ spectra in these active regions, spectroscopic quantities such as equivalent width(EW), doppler shift, doppler width, etc., were derived(see Figure l(a)) and the correlation between them were studied(see Figure l(b)). Our main results are as follows: (I)In NOAA7562, which is a young and evolving EFR, the EW is large, while it is small around a simple and roundish spot of NOAA7558. (2)In these active regions, redshift in the 10830 line is dominant when the EW is larger. (3)As the doppler width increases, the line tends to shift redward. (4)When the EW is smaller, it seems to exist another component which have dynamic characteristics different from the redshifting component. In NOAA7560 and NOAA7561, regions which have several small spots, the values of the EW are intermediate. Results (2) and (3) may suggest the possible existence of downflow above active regions, if the HeI 10830 ${\AA}$line is formed in the upper chromopshere, and it is consistent with the earlyer result from the SMM extreme-ultraviolet observation by Klimchuk(1987, Astrophys. J., 323, 368) (to be submitted. to Astronomy and Astrophysics; an extended abstract)

  • PDF

도교(道敎) 윤리(倫理)와 손사막(孫思邈)의 의덕(醫德)에 관한 연구(硏究) (A study of relation between Taoism and Sun-Si-Miao's Madical morals)

  • 권경인;이병욱;김은하
    • 대한한의학원전학회지
    • /
    • 제18권1호통권28호
    • /
    • pp.49-56
    • /
    • 2005
  • Mankind has had various medical treatments and theories as the result of steady researches about many diseases. Medical science has something to do with religions closely. That is, he tries to solve the problem connected with his life through medicine, while he tries to overcome the fear of death through the religion. Also I have tried to establish the relations between Oriental medicine. This research shows that the relation between Taoism and medical morals(醫德). The results of this research are following. The moral consciousness in medicine is the one of great traditions in Oriental medicine which comes to the front by Sun-Si-Miao(孫思邈). That is influenced by the ethical view that a moral act influences the long and the short of life. ${\ulcorner}$Tai-Ping-Jing(太平經)${\lrcorner}$ says that man enjoys longevity if he tends his parents with filial piety and then is aware of the principle of heaven and earth. Sun-Si-Miao teaches in Da-Yi-Jing-Cheng(大醫精誠) that 'Treat the patient impartially', 'Don't weigh the merits when treating the patient', 'Avoid the use of animal medicines as you can.', 'As a man sows, so he shall reap.', Don't be jealous and don't be proud.', which are closely related to main principles about act and taboo suggested in ${\ulcorner}$Bao-Piao-Zi(抱朴子)${\lrcorner}$

  • PDF

${\ll}$천금요방(千金要方)${\gg}$${\ll}$천금익방(千金翼方)${\gg}$ 에 기재(記載)된 부인과학설(婦人科學說)에 관(關)한 연구(硏究) (A Study of Gynecology Theory in Qian-Jin-Yao-Fang and Qian-Jin-Yi-Fang)

  • 김은하;김기욱;박현국;이병욱
    • 대한한방부인과학회지
    • /
    • 제15권4호
    • /
    • pp.98-110
    • /
    • 2002
  • $Sun{\sim}Si{\sim}Miao$(孫思邈) is known to everybody as a great medical doctor. He has written two famus books. Those are the $Qian{\sim}Jin{\sim}Yao{\sim}Fang$(${\ll}$千金要方${\gg}$) and the $Qian{\sim}Jin{\sim}Yi{\sim}Fang$(${\ll}$千金翼方${\gg}$). He said that woman's disease differ from man's disease, we must care of woman carefully. And he has written seven parts of the books on gynecology. He has introduced reason of woman' disease and method of medical treatment variously. Also he has introduced a method of making cosmetics and beauty treatment. So We summarized pediatrics theory in two books and decomposed reason of disease and method of medical treatment. Also I compared with $Xiao{\sim}Pin{\sim}Fang$(${\ll}$小品方${\gg}$) In conclusion, I have known that $Sun{\sim}Si{\sim}Miao's$ gynecology is consist of useful and various substance.

  • PDF

인공위성 탑재용 소형 극자외선 태양망원경 공학 모형 설계 (DESIGNING A SMALL-SIZED ENGINEERING MODEL OF SOLAR EUV TELESCOPE FOR A KOREAN SATELLITE)

  • 한정훈;장민환;김상준
    • Journal of Astronomy and Space Sciences
    • /
    • 제18권2호
    • /
    • pp.145-152
    • /
    • 2001
  • 태양의 극자외선 복사를 연구하기 위한 인공위성 탑재용 소형 극자외선 태양망원경의 공학 모형을 설계하였다. 극자외선 태양망원경은 $584.3AA$(He I)과 $629.7AA$(OV)의 두 파장대역에서 태양을 관측하기 위한 목적으로 설계되었다. 광학계는 Ritchey-Chr 샤두 방식이고, 망원경의 유효구경과 유효 초점 거리는 각각 80mm, 640mm이다. 회전 필터 휠을 사용하여 He I과 OV 방출선을 관측할 수 있도록 하였다. 검출기의 MCP (Microchannel Plate)는 채널 길이 대 직경의 비가 40:1인 Z-stack 타입이고, photocathode로서 KBr이 MCP 초점면에 코팅되며, MCP와 CCD는 fiber optic taper로 연결되도록 디자인하였다. 광학계 설계에 대한 분석은 광학계산용 상용 소프트웨어를 이용하였다.

  • PDF

Generation of He I 1083 nm Images from SDO/AIA 19.3 and 30.4 nm Images by Deep Learning

  • Son, Jihyeon;Cha, Junghun;Moon, Yong-Jae;Lee, Harim;Park, Eunsu;Shin, Gyungin;Jeong, Hyun-Jin
    • 천문학회보
    • /
    • 제46권1호
    • /
    • pp.41.2-41.2
    • /
    • 2021
  • In this study, we generate He I 1083 nm images from Solar Dynamic Observatory (SDO)/Atmospheric Imaging Assembly (AIA) images using a novel deep learning method (pix2pixHD) based on conditional Generative Adversarial Networks (cGAN). He I 1083 nm images from National Solar Observatory (NSO)/Synoptic Optical Long-term Investigations of the Sun (SOLIS) are used as target data. We make three models: single input SDO/AIA 19.3 nm image for Model I, single input 30.4 nm image for Model II, and double input (19.3 and 30.4 nm) images for Model III. We use data from 2010 October to 2015 July except for June and December for training and the remaining one for test. Major results of our study are as follows. First, the models successfully generate He I 1083 nm images with high correlations. Second, the model with two input images shows better results than those with one input image in terms of metrics such as correlation coefficient (CC) and root mean squared error (RMSE). CC and RMSE between real and AI-generated ones for the model III with 4 by 4 binnings are 0.84 and 11.80, respectively. Third, AI-generated images show well observational features such as active regions, filaments, and coronal holes. This work is meaningful in that our model can produce He I 1083 nm images with higher cadence without data gaps, which would be useful for studying the time evolution of chromosphere and coronal holes.

  • PDF

An investigation of the Photospheric and Chromospheric Layers of Sunspots

  • Kim, Hyun-Nam;Solanki, Sami. K.;Lagg, Andreas;Kim, Kap-Sung;Choe, G.S.;Kwon, Yong-Jun
    • 천문학회보
    • /
    • 제36권2호
    • /
    • pp.95.2-95.2
    • /
    • 2011
  • The most powerful technique for deducing the magnetic structure of the Sun is spectro-polarimetry. Detailed measurements of the polarization signal of the spectral lines (Stokes vector) allow us to infer the physical conditions in the solar atmosphere prevailing during the line formation. Inversion codes are the main tool to extract this information from the Stokes spectra. This study will focus on measurements of the chromospheric He I 1083.0 nm triplet and the photospheric Si I 1082.7 nm line. A spectropolarimetric data set of sunspots, obtained with the German Vacuum Tower Telescope (VTT) at the Teide observatory on Tenerife, is analyzed using an inversion technique. We will introduce the German Vacuum Tower Telescope and the inversion code HeLix, and will show data sets that are analyzed by HeLix.

  • PDF

A Cytotoxic Constituent from Sophora flavescens

  • Kim, Youn-Kwan;Min, Byung-Sun;Bae, Ki-Hwan
    • Archives of Pharmacal Research
    • /
    • 제20권4호
    • /
    • pp.342-345
    • /
    • 1997
  • A cytotoxic constituent was isolated by bioassay-guided procedure from the roots of Sophora flavescens Aiton (Leguminosae). The constituent was identified as sophoraflavanone G (I) by means of chemical methods and in comparsion with spectral data of standard compound. The $ED_50$ values of constituent I were 0.78, 1.57, 2.14 and $8.59{\mu}g/ml$ against A549, HeLa, K562 and L1210 cell lines, respectively. Constituent I exhibited highly cytotoxic activities against A549, K562 and HeLa cells, but showed a mild activity $$(ED_50 value, 5{\mu}g/ml)$$ against L1210 cells. Among the tested cell lines, A549 cells were the most sensitive to constituent I.

  • PDF

신디사이저와 퍼커션의 독자적인 리듬기법 연구 - Sting의 "Nothing Like The Sun" 앨범을 중심으로 - (A Study on Independent Rhythm Technique of Synthesizer & Percussions - Focusing on the Sting's "Nothing Like The Sun" Album -)

  • 엄수한
    • 한국산학기술학회논문지
    • /
    • 제17권12호
    • /
    • pp.327-332
    • /
    • 2016
  • 스팅은 1985년 첫 솔로앨범인 를 필두로 세련된 감각과 폭넓은 음악적 스펙트럼을 선보이며 1억 장 이상의 앨범 판매고를 올린 영국을 대표하는 아티스트다. 본 논문에서는 스팅이 솔로 아티스트로서 폴리스 해체 이 후 30년이 넘도록 다양하고 폭넓은 자신만의 음악적 색채를 인정받는데 큰 발판이 되었던 음반에 수록되어 있는 곡들 중 'Straight To My Heart'와 'Be Still My Beating Heart'의 리듬 편곡에 대해 중점적으로 분석 할 것이다. 음반에 있는 곡들은 전체적으로 드럼파트는 기본적인 연주를 벗어나지 않고 전체적인 리듬분할의 역할을 여러 가지 퍼커션을 통해 하거나 신디사이저를 코드악기로서의 역할보다는 리듬악기로서의 역할에 더 비중을 둔 곡들이 많은 것을 볼 수 있다. 솔로 초기 스팅 만의 독특한 악기별 리듬구성과 역할배분은 다른 뮤지션들의 음반과는 사뭇 다른 그 만의 독특한 사운드를 창출해낸다. 이에 본 논문에서는 이 시기의 음반에 두드러지게 나타난 편곡적인 특징과 리듬적 특성, 즉 드럼비트를 쪼개서 리듬을 분할하는 통상적인 방식에서 벗어나 퍼커션을 포함한 다른 악기들의 리듬분할을 통해 곡의 기본적인 흐름을 이끌어가는 방법에 대해 설명 하고자 한다.

A Spectropolarimetric Investigation of the Photospheric and Chromospheric Layers of Sunspots

  • 김현남;;;김갑성
    • 천문학회보
    • /
    • 제37권2호
    • /
    • pp.128.2-128.2
    • /
    • 2012
  • Spectro-polarimetry is the most powerful technique for deducing the magnetic structure of the Sun. Stokes vector allow us to infer the physical conditions in the solar atmosphere prevailing during the line formation. Inversion codes are the main tool to extract this information from the Stokes spectra. This study will focus on measurements of the chromospheric He I 1083.0 nm triplet and the photospheric Si I 1082.7 nm line. A spectropolarimetric data set of sunspots, obtained with the German Vacuum Tower Telescope (VTT) at the Teide observatory on Tenerife, is analyzed using an inversion technique. We will introduce the German Vacuum Tower Telescope and the inversion code HeLix, and will show data sets that are analyzed by HeLix. Finally I made variety plots and maps for understanding photospheric and chromospheric layers of sunspots.

  • PDF

The effect of mushroom components on the proliferation of HeLa cell line in vitro

  • Chung, Kyu-Sun
    • Archives of Pharmacal Research
    • /
    • 제2권1호
    • /
    • pp.25-33
    • /
    • 1979
  • In order to find out nutritional effects of Korean edible mushrooms on the multiplication of tissue cells, the alcohol extracts and acid bydrolysates of eleven species of mushrooms were added to Earle's ESS. A comparison of the respective multiplications of HeLa cells in this solution and in control solution of TC=199. Yielded the following result: The alcohol extracts and acid hydrolysates of a Coprinus comatur, Agaricus campestris, Agaricus bisporus, Lentinus edodes, Tricholoma matsutake, Pleurotus ostretus, Ramaria botrytis and Pholiota nameko influenced favorably the maintenance of the normal form and monolayer of HeLa cells. The growth curves of HeLa cells in the cultures containing, respectively, the alcohol extracts and acid hydrolysates of these eight mushrooms showed that five species, i.e., Coprinus comatus, Agaricus compestris, Agaricus bisporus, Lentinus edodes and Tricholoma matsutake effected an excellent multiplication and that the other three species were less effective than those five species. As to the effects on the cell multiplication, no marked difference was observed between the alcohol extracts and the acid hydrolysates of the mushrooms tested.

  • PDF