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차나무 추출물을 이용한 골프장의 지렁이 샘플링과 종류 조사
하종원,홍용,이상명,추호렬,김진호,이동운,Ha, Jong-Won,Hong, Yong,Lee, Sang-Myeong,Choo, Ho-Yul,Kim, Jin-Ho,Lee, Dong-Woon 한국잔디학회 2010 한국잔디학회지 Vol.24 No.2
Effective sampling method and distribution of earthworms in turfgrasses of golf courses were investigated at 10 Korean golf clubs. Tea tree extract was highly effective in extracting Eisenia andrei compared with mustard oil or formalin. 1000-fold diluent of tea tree extract (4 L/$m^2$) was more effective than 500- and 2000-fold. Sampling efficacy of earthworm increased as soil depth decreased. Additional watering after treatment of tea tree extract did not significantly influence the sampling of earthworms. Eight earthworm species in 4 genera were collected from turfgrasses of 10 golf courses with 4 L of 1000-fold diluent of tea tree extract (15% tea saponin)/$m^2$. Among, dominant earthworm was Amynthas heteropodus and collected 147 individuals from 6 golf clubs. Thirteen Drawida japonica was collected from 3 golf clubs and A. hilgendorfi and A. hupeiensis were collected from 2 golf clubs. A. hupeiensis was not collected with 1000-fold diluent of tea tree extract (15% tea saponin)/$m^2$. 골프장 잔디에서 효과적으로 지렁이를 추출하는 방법과 골프장의 잔디에 서식하는 지렁이의 종류를 알아보기 위하여 연구를 수행한 결과, 차나무추출물이 mustard oil이나 formalin에 비하여 붉은줄지렁이(Eisenia andrei)의 추출에 효과가 있었다. 그리고 차나무추출물 1000배 처리가 (4 L/m2)가 500배와 2000배 처리에 비하여 효과가 높았다. 토양 내 서식 깊이가 얕을수록 추출효과가 높았다. 그러나 차나무추출물 처리 후 추가적인 관수는 추출에 크게 영향을 미치지 않았다. 우리나라 10개 골프장에는 4속 8종의 지렁이가 분포하고 있었다. 그 중 변이성지렁이(Amynthas heteropodus)가 6개 골프장에서 147개체가 채집되어 우점종이었으며 염주위지렁이(Drawida japonica)가 3개 골프장에서 13개체가 채집되었고, 외무늬지렁이(A. hilgendorfi)와 똥지렁이(A. hupeiensis)가 2개 골프장에서 채집되었다. 차나무추출물로는 똥지렁이가 탈출되지 않았다.
하종원,강석민,편욱범,이주영,안미영,강웅철,전태주,정남식,이종두,조상호 연세대학교의과대학 2005 Yonsei medical journal Vol.46 No.1
Although adriamycin (Doxorubicin) is one of the most effective and useful antineoplastic agents for the treatment of a variety of malignancies, its repeated administration can induce irreversible myocardial damage and resultant heart failure. Currently, no marker to detect early cardiac damage is available. The purpose of this study was to investigate whether an assessment of the acoustic properties of the myocardium could enable the earlier detection of myocardial damage after adriamycin chemotherapy. Forty Wistar rats were treated with adriamycin (2mg/kg, i.v.) once a week for 2, 4, 6 or 8 weeks consecutively. Left ventricular ejection fraction (LVEF) was calculated using M-mode echocardiography data. The magnitude of cardiac cycle dependent variation of integrated backscatter (CVIB) of the myocardium was measured in the mid segment of the septum and in the posterior wall of the left ventricle, using a real time two dimensional integrated backscatter imaging system. LVEF was significantly lower in the adriamycin-treated 8-week group than in the controls (75±9 vs 57±8%, p<0.05). Myocyte damage was only seen in the 8-week adriamycin-treated group. However, no significant changes of CVIB were observed between baseline or during follow-up in the ADR or control group. In conclusion, serial assessment of the acoustic properties of the myocardium may not be an optimal tool for the early detection of myocardial damage after doxorubicin chemotherapy in a rat model.
Clinical hypertension: a new era
하종원 대한고혈압학회 2014 Clinical Hypertension Vol.20 No.-
We are delighted to announce the launch of the new journal Clinical Hypertension. Clinical Hypertension is anopen-access, peer-reviewed, online journal, which will publish scientific investigation of the highest quality in thefield of blood pressure regulation and pathophysiology, treatment, and prevention of hypertension. The editorsencourage the submission of original articles that deal with basic, clinical, and population studies of hypertensionand related fields, such as cardiology, nephrology, endocrinology, neuroscience, vascular biology, physiology,pharmacology, cellular and molecular biology, and genetics.
하종원 선문대학교 사회과학대학 2000 사회과학논집 Vol.3 No.-
우리나라의 경우 아직 타율적 심의제도가 현존하고 있고 체계적인 등급제가 시행되고 있지 않은 시점에서 V-Chip 방안의 도입은 시기상조일런지 모르나 전반적인 세계적 추세는 미디어 폭력에 대해 보다 적극적인 대처방안을 모색하는 경향을 띤다. 그런 맥락에서 현재 진행되고 있는 V-Chip 방안에 대한 고찰은 우리나라에 있어서 TV폭력에 대한 제도적 안전장치를 구축하는 데 타산지석으로서의 의미가 적지 않다고 본다.
텔레비전의 저널리즘적 가능성과 전망 : 시사고발 프로그램을 중심으로
하종원 선문대학교 사회과학대학 1998 사회과학논집 Vol.1 No.1
본 연구는 '시사고발 프로그램'을 구체적인 대상으로 하여 그것의 정의와 유형을 논의하고 형식과 내용분석을 통해 기본적인 특성을 밝히고, 그에 대한 사회적 정서의 하나인 신문의 담론을 통해 문제점과 방향을 제시하였으며, 결론적으로 앞으로 고려해야 할 과제와 발전을 위한 몇가지 전제를 제시하고자 하였다.
장애인방송 서비스의 질적 요인 및 제고방안에 대한 연구: 장애인방송 관련 참여자 면접조사를 중심으로
하종원,박정숙,박기성 부산울산경남언론학회 2021 지역과 커뮤니케이션 Vol.25 No.2
In order to guarantee the rights of media access for the persons with disabilities, several developed countries including Korea have provided so-called TV access services such as captioning, audio description, and signing. Such access services should be achieved not only by the quantitative expansion, but also by its quality improvement. In the former case, it has been somewhat satisfied through regulations on the ratio of the provision of access services for the persons with disabilities. In the latter case, however, there are many complaints from its users due to poor quality. Therefore, this study identifies the factors affecting the quality of access services through interviews with persons related to the access services for the persons with disabilities, and proposes some ways to improve its quality.