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박종규,서성호,부정숙,Park Jong-Kyu,Seo Seong-Ho,Boo Jung Sook 한국마린엔지니어링학회 2005 한국마린엔지니어링학회지 Vol.29 No.8
This experimental study is conducted to investigate effects of a splitter plate, which is set on the back side of a square prism in the uniform flow. The Reynolds number is $1.44{\times}10^{4}$ based on the width of the square prism. The measurement of velocity vector and pressure distribution are carried out 4 cases of length in the range of 0.5L to 2.0L with 0.5L interval and 3 cases of Position at 0L, 0.25L, 0.5L, Flow visualization is also executed by smoke-wire method to understand the mechanism of vortex formation The results show the strong vortex shedding patterns and drags are decreased effectively, when the position of splitter plate is 0L. And the drag reduction rate is in inverse proportion to the splitter plate length
20대 이하 간세포암종의 증례 : 젊은 연령에서 발생한 폐쇄성 황달이 동반된 간세포암종 1예
박종규 ( Jong Kyu Park ),김영석 ( Young Seok Kim ),김상균 ( Sang Gyune Kim ),정승원 ( Seung Won Jeong ),장재영 ( Jae Young Jang ),최현종 ( Hyun Jong Choi ),문종호 ( Jong Ho Moon ),김홍수 ( Hong Soo Kim ),이문성 ( Moon Sung Lee 대한간암연구회 2009 대한간암학회지 Vol.9 No.-
Jaundice presents in 19% to 40% of patients with hepatocellular carcinoma (HCC) at the time of diagnosis and usually occurs in later stages. In most situations, it is due to diffuse tumor infiltration of liver parenchyma, hilar invasion, or progressive terminal liver failure (advanced underlying cirrhosis). Obstructive jaundice as the main presenting clinical feature is uncommon. Only 1~12% of HCC patients manifest obstructive jaundice as the initial complaint. Such cases are clinically classified as "icteric type hepatoma", or "cholestatic type of HCC". Identification of this group of patients is clinically important, because surgical treatment may be beneficial. We report a case of icteric HCC developed in young age.
박종규(Jong-Kyu Park),서성호(Seong-Ho Seo),부정숙(Jung-Sook Boo) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.5
This experimental study is conducted to investigate the effect of a splitter plate, which is set on the back side of a square prism in the uniform flow, Re=1.44×10⁴. The measurement of velocity vector and pressure distribution are carried out 4 cases of length in the range of 0.5ℓ to 2.0ℓ with 0.5ℓ interval and 3 cases of position at 0ℓ, 0.25ℓ, 0.5ℓ. Flow visualization is also executed by smoke-wire method to understand the mechanism of vortex fprmation. The results show the strong vortex shedding patterns and drags are decreased effectively, when the position of splitter plate is 0ℓ. and the drag reduction rate is in inverse proportion to the splitter plate length.
박종규 ( Jong Kyu Park ),허규찬 ( Kyu Chan Huh ),신철민 ( Cheol Min Shin ),이혁 ( Hyuk Lee ),윤영훈 ( Young Hoon Yoon ),송경호 ( Kyung Ho Song ),민병훈 ( Byung Hoon Min ),최기돈 ( Kee Don Choi ) 대한소화기학회 2014 대한소화기학회지 Vol.64 No.3
Functional dyspepsia is one of the most common gastrointestinal disorders encountered in clinical practice. Functional dyspepsia is currently defined by Rome III criteria as the chronic dyspeptic symptoms (postprandial fullness, early satiety, epigastric pain or burning) in the absence of underling structural or metabolic disease that readily explain the symptoms. According to the Rome III consensus, functional dyspepsia can be subdivided into postprandial distress syndrome (PDS) and epigastric pain syndrome (EPS). Although the Rome III criteria have been published more than 8 years ago, not much effort has been put into validating these criteria and direct scientific evidence supporting the validity of the subdividing functional dyspepsia into PDS and EPS are lacking. This article is intended to review the validity of the Rome III criteria on the subdivisions of functional dyspepsia, i.e. PDS and EPS. The impact of sleep disorder, Helicobacter pylori-associated dyspepsia, and the emerging drug therapies in functional dyspepsia will also be discussed in this article. (Korean J Gastroenterol 2014;64:133-141)
급성 허혈성 뇌졸중과 동시에 발생한 급성 심근 경색 2예
박종규 ( Jong Kyu Park ),이상학 ( Sang Hak Lee ),최성훈 ( Seong Hoon Choi ),정재헌 ( Jae Hun Jung ),이남호 ( Nam Ho Lee ) 대한내과학회 2008 대한내과학회지 Vol.74 No.6
심근 경색과 허혈성 뇌졸중은 그 위험 요인과 병태 생리에 공통점이 있다. 간혹 이 두 질환이 한 환자에서 비슷한 시기에 일어날 수 있으나, 대개 수일에서 수주일의 간격을 두고 생긴다. 그러나 심근 경색과 뇌졸중이 동시에 생기는 경우는 드물며, 이런 경우 심근 경색에 대한 정확한 진단과 치료가 어려울 수 있다. 특히 급성 뇌졸중은 심근 경색의 전형적인 특징을 바꾸기도 하므로, 이 두 질환이 합병된 것을 발견하려면 진단에 대한 적극적인 의심이 필요하다. 저자들은 뇌졸중과 심근 경색이 동시에 발생한 두 환자를 보고하였다. 두 환자 모두에서 두 질환이 같은 날 발생하였다. 첫 환자에서는 의식 변화로 인해 흉부 증상에 대한 문진이 불가능하였고, 두번째 환자는 흉통을 호소하지 않는 환자였다. 두 증례 모두에서 임상 소견과 검사 소견을 통해 동시에 생긴 뇌졸중과 심근 경색을 진단하였으며, 응급으로 경피적 관동맥 중재술을 통하여 심근 경색을 치료하였다. Myocardial infarction (MI) and stroke often share the same risk factors and pathogenic mechanism. Sometimes they can occur in the same patient proximately, occurring days or weeks apart. However, the simultaneous occurrence of MI and stroke is rare and presents a diagnostic and therapeutic challenge. Specifically, an acute stroke can alter typical features of MI. Thus, recognition of the coexistence of these two events requires a high threshold of suspicion. The authors describe two patients who presented with simultaneous stroke and MI development. The two events developed on the same day in both patients. The second patient did not have chest pain, whereas chest symptoms could not be assessed in the first patient secondary to altered mental status. After the diagnoses were made using clinical and laboratory findings, urgent percutaneous coronary intervention was performed in both patients.(Korean J Med 74:672-675, 2008)