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ON THE HOMOGENEITY OF THE EXTINCTION LAW IN OUR GALAXY

  • Bondar, A.;Galazutdinov, G.;Patriarchi, P.;Krelowski, J.
    • Journal of The Korean Astronomical Society
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    • v.39 no.3
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    • pp.73-80
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    • 2006
  • We analyze the extinction law towards several B1V stars-members of our Galaxy, searching for possible discrepancies from the galactic average extinction curve. Our photometric data allow to build extinction curves in a very broad range: from extreme UV till infrared. Two-colour diagrams, based on the collected photometric data from the ANS UV satellite, published UBV measurements and on the infrared 2MASS data of the selected stars, are constructed. Slopes of the fitted straight lines are used to build the average extinction curve and to search for discrepant objects. The selected stars have also been observed spectroscopically from the Terskol and ESO Observatories; these spectra allow to check their Sp/L's. The spectra of only about 30% of the initially selected objects resemble closely that of HD144470, considered as the standard of B1 V type. Other spectra either show some emission features or belong clearly to another spectral types. They are not used to build the extinction curve. Two-colour diagrams, constructed for the selected B1 V stars, showing no emission stellar features, prove that the interstellar extinction law is homogeneous in the Galaxy. Both the shape of the curve and the total-to-selective extinction ratio do not differ from the galactic average and the canonical value(3.1) respectively. The circumstellar emissions usually cause some discrepancies from the average interstellar extinction law; the discrepancies observed in the extraterrestrial ultraviolet, usually follow some misclassifications.

A Study on the Construction of Women's Excavated Jangui in 17th Centuries -Mainly on the Jangui from KyungJu Lee's Tomb in Young-am- (17세기 여자 출토 장의의 구성법에 관한 연구 -영암출토 경주 이씨~1684) 장의를 중심으로-)

  • An, Myung-Sook
    • Journal of the Korean Society of Costume
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    • v.57 no.7
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    • pp.45-52
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    • 2007
  • This study is based on the observation of women's Jangui in 17th centuries. As we observed, Jangui in seventeenth century was shown the same style. They were not headdress but coat. The characteristics of shape are Mokpankit, double-seop, straight sleeve, triangle moo, sam-su(which is attached to the end of sleeves) and a little coat string etc. There is no specific mode difference with the change of times. However, the straight sleeve is shown straight line in the early Chosun dynasty. Jangui in seventeen century are all oblique line sleeve except Jangui of Jin-ju Ha's family. Jangui put on coat do not seem clear-cut difference with the change of times. From Jangui of Yang-chun Hu's family in 14th centuries till An-dong Kim's family, the special features of Jangui are the same style. In addition, The double-seop in 17th centuries was not completely symmetry. However, after 19th centuries, Jangui for headdress was shown perfectly symmetry.

Chinese Medicine including Chuna Manual Therapy for Osteoarthritis : A Systematic Review (골관절염에 대한 추나요법을 포함한 중의학치료의 효과 : 체계적 문헌 고찰)

  • Kim, Han-Kyul;Gwon, Tae-U;Kim, Byung-Jun
    • The Journal of Churna Manual Medicine for Spine and Nerves
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    • v.13 no.1
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    • pp.11-21
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    • 2018
  • Objectives: To evaluate the evidence supporting the effectiveness and safety of Chinese medicine, including Chuna manual therapy, for the treatment ofosteoarthritis. Methods: We conducted a search of 8 electronic databases(Pubmed, Web of Science, EMBASE, Cochrane Library, CAJ, KISTI, NDSL, and RISS) to find all randomized controlled clinical trials that discuss Chuna manual therapy forosteoarthritis till May 2018. Results: Our inclusion criteria selected 7eligible RCTs involving 633 participants. The meta-analysis of 6 studies showed positive results for the useof Chinese medicine, including Chuna manual therapy, for treating knee osteoarthritis. There was no evidence of worsening symptoms or any adverse events. Conclusions: Our systematic review found favorable evidence regardingthe effectiveness of Chinese medicine, including Chuna manual therapy, for treating knee osteoarthritis. However, our systematic review had several limitations owingto the low quality of original articles andadditionalclinical trials would be necessary for stronger evidence.

Effects of Self-breast Pumping in Primiparous Women after Cesarean Delivery (제왕절개술 초산모의 자가 착유 행위 효과)

  • Yeo, Jung-Hee;Moon, Guil-Nam;Lee, Sun-Ok
    • Women's Health Nursing
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    • v.18 no.2
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    • pp.98-107
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    • 2012
  • Purpose: This study was done to identify the effects of self-breast pumping on breastfeeding rates and, the degree of breast milk fullness among primiparous women giving birth by cesarean section. Methods: The study design was a non-synchronized posttest control group experiment with repeated measures. The participants were 60 women, 31 in the experimental group who used a manual pump 5 times a day after exclusive breastfeeding and 29 in the control group who breastfed exclusively with no other interventions. Results: While self-breast pumping did not improve breastfeeding rates or the degree of breast milk fullness at any of the time points studied, breastfeeding rates continued to remain high till 12 weeks postpartum in both groups. Conclusion: Although some modifications in research methods will be required to identify the effects of breast pumping and exclusive breastfeeding, both these approaches can be used as interventions to improve breastfeeding rates and breast milk quantity.

The Versatility of Cervical Vertebral Segmentation in Detection of Positional Changes in Patient with Long Standing Congenital Torticollis

  • Hussein, Mohammed Ahmed;Kim, Yong Oock
    • Journal of International Society for Simulation Surgery
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    • v.3 no.1
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    • pp.28-32
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    • 2016
  • Background Congenital muscular torticollis (CMT) is a benign condition. With early diagnosis and appropriate management, it can be cured completely, leaving no residual deformity. However, long-standing, untreated CMT can lead to permanent craniofacial deformities and asymmetry.Methods Nineteen patients presented to the author with congenital muscular torticollis. Three dimensional computed tomography (3-D CT) scans was obtained upon patient’s admission. Adjustment of skull’s position to Frankfort horizontal plan was done. Cervical vertebral segmentation was done which allowed a 3D module to be separately created for each vertebra to detect any anatomical or positional changes.Results The segmented vertebrae showed an apparent anatomical changes, which were most noticeable at the level of the atlas and axis vertebrae. These changes decreased gradually till reaching the seventh cervical vertebra, which appeared to be normal in all patients. The changes in the atlas vertebra were mostly due to its intimate relation with the skull base, while the changes of the axis were the most significantConclusion Cervical vertebral segmentation is a reliable tool for isolation and studying cervical vertebral pathological changes of each vertebra separately. The accuracy of the procedures in addition to the availability of many software that can be used for segmentation will allow many surgeons to use segmentation of the vertebrae for diagnosis and even for preoperative simulation planning.

Current Status of Internal Dosimetry Methods and Radiological Regulations in Korea, Ukraine and European Community

  • Lee, Tae-Young;Lee, Jong-Il;Berkovski, Vladimir
    • Journal of Radiation Protection and Research
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    • v.28 no.1
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    • pp.65-73
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    • 2003
  • The paper discusses results of recent international intercomparison exercises on internal dose assessments, status of up to date internal dosimetry methods and the radiological legislation developed and implemented in Korea, European Union and Ukraine. The system of radiation protection in Korea is based on the Korean Atomic Energy Regulatory Enforcement on Safety Standards (Ministry Notice No. 2001-2). The notice is based on the recommendations in ICRP Publication 60 (1990) and IAEA Basic Safety Standards (1996). But the full implementation of the notice by the end of the year 2002 is not required because of the socio-economic situation and inexperience in internal radiation dosimetry Regulatory framework for internal radiation dosimetry is under development toward the full implementation of the notice from January 1, 2003. The system of radiation protection in Ukraine is based on the National radiation protection regulatory code NRBU-97. The code was developed and adopted in 1998 and replaced the Regulations of Former Soviet Union. The document is based on the ICRP Publication 60, Euratom Directive 96/29 and IAEA Basic Safety Standards (1996). The transitional period of 5 years (effected till January 2003) is established for implementation of all requirements of this new regulation. The system of radiation protection in the European Community is based on the Council Directive 96/29/Euratom, adopted in 1996 and enforced from 13 May 2000. Directive 96/29/Euratom has the status of the European law.

A Meta-Analysis of the meets of Aromatherapy on Psychological Variables in Nursing (아로마테라피 간호중재의 정신심리적 효과 메타분석)

  • Roh, Kook-He;Park, Hyeoun-Ae
    • Research in Community and Public Health Nursing
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    • v.20 no.2
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    • pp.113-122
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    • 2009
  • Purpose: The purpose of this study is to explore the effect of aromatherapy on anxiety, depression, and stress. Methods:Medical and nursing literature databases were searched to identify studies comparing aromatherapy with a control group. Results: Thirty-one studies published till September 2008 were included in the analysis. Twenty-two studies showed that aromatherapy generally had positive effects on the anxiety level (ES: 0.61). Thirteen studies showed that aromatherapy has significantly decreased the depression level (ES: 0.91). Seven studies showed that aromatherapy had positive effect on the stress level (ES: 0.78). Further analysis found that aromatherapy was more effective for normal population than for patients group with anxiety and stress. On the contrary, aromatherapy was more effective for patients group than for general population with depression. Conclusion: Aromatherapy had positive effect on anxiety, depression and stress level. But there was no sufficient evidence to show the two different aromatherapy methods and two different period of aromatherapy had different effects due to small sample size and heterogeneity of sample. And it was needed to perform follow-up and further comparative studies.

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A Basic Study on Road Safety Assessment through an Analysis of Drivers' Driving Characteristics (운전자 주행특성 분석을 통한 도로 안전성 평가에 관한 기초연구)

  • Lim, Joon-Bum;Lee, Soo-Beom;Park, Jun-Tae;Park, Jin-Ho
    • Journal of the Korean Society of Safety
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    • v.26 no.5
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    • pp.136-140
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    • 2011
  • In this study, to investigate the dangerous driving on the curves, a driving test was performed in 10 km from Jinan and to Jeonju(Bugui Gas Station~Whasim Intersection), on the national highway No. 26. For the dangerous driving felt by the driver when a driver is driving on the curves, lateral acceleration and yaw rate were analyzed. And then, the reference value of lateral acceleration and yaw rate was computed. Through observing the driving speed and the characteristics of ordinary drivers using the applicable roads or following them as they drive, the driving test was performed again and the section exceeding the reference value set as above was computed. On the dangerous driving area, exceeding the reference value, total 10 accidents took place from 2006 till 2010, and slipping caused by speeding accounted for more than 70% of the accidents. It was concluded that the result of an analysis through recording drivers' driving characteristics, was reliable.

Twenty three experiences of Fontan operation (Fontan 술식의 치험 23례에 관한 고찰)

  • 안재호
    • Journal of Chest Surgery
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    • v.16 no.3
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    • pp.342-348
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    • 1983
  • The Fontan principle of redirecting systemic venous blood into the pulmonary arteries via a conduit was initially proposed for Tricuspid Atresia, but it and its modifications have now gained a much wider application than initially intended. From September 1978 to July 1983, Atriopulmonary anastomosis has been performed in 23 patients, 2 months to 19 years of age, Seoul National University Hospital. The diagnoses were Tricuspid Atresia [TA] in 13, Univentricular Heart [UVH] in 9 and one case of Double Outlet of Right Ventricle [DORV]. Previous procedures included two Glenn shunts and one Blalock-Taussl8 shunt. Among these 23 patients, 10 patients had Right Atrial to Pulmonary Artery conduit, with a valve in 7 and without in 3. The remaining 13 patients had direct anastomosis between RA to PA. There were 14 early deaths, 7 of 13 TA patients, 6 of 9 UVH patients and one DORV, and the total hospital mortality was 60%. But there were no later deaths, 9 of these 23 patients survived operation and are presently alive. The Fontan procedure can be done with an acceptable low mortality with good functional results for Tricuspid Atresia and other complex lesion in foreign hospital, but till now our results revealed much higher risks. For our good operative results and effective patients selection, we must clarify the exact condition of pulmonary arterial system and accumulate much more experiences and technique.

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Endovascular Stenting of a Traumatic Pseudoaneurysm on C5 Portion of the Internal Carotic Artery - A Case Report - (내경동맥에 발생한 외상성 가성동맥류에 대한 혈관내 스텐트 치료)

  • Jung, Hyun Ho;Kim, Hun Joo;Lee, Myeung Sub;Whang, Kum;Cho, Sung Min;Hu, Chul;Pyen, Jhin Soo;Hong, Soon Ki
    • Journal of Korean Neurosurgical Society
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    • v.30 no.sup2
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    • pp.332-336
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    • 2001
  • This 18-year-old male patient had a massive epistaxis after motorcycle traffic accident on 1st day of admission. There were no other significant brain parenchymal lesion on initial brain CT exam, except multiple pneumocephalus and basal skull fracture lines. We treated epistaxis conservatively till vital signs were corrected, and then conventional cerebral angiogram was followed. On angiogram, there was traumatic pseudoaneurysm on C5 portion(by Fischer) of ICA, so we treated it only by endovascular stenting. For the purpose of sparing parent arterial patency, endovascular stenting on pseudoaneurysm may play a role with safety and good results.

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