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서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1998)
김재홍,김준호,반재용,이정우,황성주,정준규,정성태,강진문,조흔정,홍창의,정혜신,이한승,김이선,이봉길,이종호,선영우,한기덕,윤성필,이성훈,안종성,박석범,문승현,조항래,김형섭,류지호,황재영,박준홍,손상욱 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.1
In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria gonorrhoeae(PPNG), we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by menas of the chromogenic cephalosporin method. In 1998, 93 strians of N. genorrhoeae were isolated, among which 60(64.5%) were PPNG. The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 64.5% in 1998.
담관 점막 및 점막하를 따라 담낭 및 총간관으로 전이된 총 담관암 1예
정명자,안득수,김대곤,고현우,안혁수,임석태,조백환,한규희 대한소화기내시경학회 1997 Clinical Endoscopy Vol.17 No.6
Cholangiocarcinoma is a form of adenocarcinoma arising from the intrahepatic or extrahepatic biliary epithelium. Apparent predisposing factors include some chronic hepatobiliary parasitic infsttations, congenital anomalies with ectatic ducts, sclerosing cholangitis and chronic ulcerative colitis and occupational exposure to possible biliary tract carcinogens. Patients with cholangiocarcinoma usually present with biliary obstruction, painless jaundice, pruritus, weight loss and acholic stools. Because the obstructing process is gradua1, the cholangiocarcinoma is often far advanced by the time it presents clinically. The diagnosis is most frequently made by cholangiography following ultrasound demonstration of dilated intrahepatic bile ducts. We report a case of common bile duct cancer spreading to gallbladder and common hepatic duct along the biliary mucosal epitherium and submucosal tissue in 68-year-old female patient along with a review of literature.
Leukemoid Reaction, a Rare Paraneoplastic Syndrome in Urothelial Cell Carcinoma
Ho Seok Chung,Bo Sung Shin,Ho Song Yu,Eu Chang Hwang,Sun-Ouck Kim,Sung Il Jung,Taek Won Kang,Dong Deuk Kwon,Kwangsung Park 대한비뇨기종양학회 2015 대한비뇨기종양학회지 Vol.13 No.3
A leukemoid reaction is usually associated with malignancies of the lung, stomach, and thyroid. In contrast, urothelial cell carcinoma is rarely associated with leukemoid reactions, with few cases reported over the past 30 years. Here, we describe a patient with urothelial cell carcinoma who exhibited a leukemoid reaction. The patient had an elevated white blood cell count and experienced a rapid and aggressive clinical course, terminating in death. For urothelial cell carcinoma patients exhibiting a leukemoid reaction, removal of the inciting tumor is the definitive treatment. However, considering the aggressive nature of these tumors, if the patient is unsuitable for radical surgical management, palliative chemotherapy should be considered.
Comparison of Synchronous and Metachronous Primary Carcinomas of the Bladder and Prostate
Ho Seok Chung,Young Ho Seo,Seung Il Jung,Eu Chang Hwang,Taek Won Kang,Dong Deuk Kwon 대한비뇨기종양학회 2017 대한비뇨기종양학회지 Vol.15 No.1
Purpose: The incidence of multiple primary malignant neoplasms increases with age. An unforeseen finding is the high number of prostate and bladder cancers pairs. Of prostate and bladder cancers pair as first primary and second primary cancers and vice versa, we investigated the differences in clinicopathological features between synchronous and metachronous primary carcinomas of the bladder and prostate. Materials and Methods: Fifty-three patients diagnosed with dual prostate and bladder cancer in a 12-year period (2004–2015) excluding cases with incidental prostate cancer after radical cystectomy were reviewed. Enrolled patients were divided into 3 groups according to cancer development (group I, synchronous cancer; group II, prostate cancer with metachronous bladder cancer; group III, bladder cancer with metachronous prostate cancer). Each group was compared according to clinicopathological features. Results: Median age was 72 years (range, 54–83 years). Groups I, II, and III comprised 29 (54.7%), 8 (15.1%), and 16 patients (30.2%), respectively. Age, prostate-specific antigen, tumor stage, grade, multifocality of bladder tumor, and treatment modality did not show statistical differences between groups. However, group III showed a lower prostate cancer stage (National Comprehensive Cancer Network anatomic stage; p=0.009) and had low-risk of prostate cancers (p=0.025). Conclusions: Bladder tumor showed no differences in the clinicopathological features between synchronous and metachronous primary carcinomas. However, metachronous prostate cancer showed better clinicopathological features of prostate cancer. It is important for clinicians to counselling and decision making in clinical situations.
굴삭기 냉각팬 성능해석 및 슈라우드 특성에 대한 실험적 연구
이재석(Jae-Seok Lee),정경남(Kyung-Nam Chung),김진영(Jin-Young Kim),이태경(Tae-Kyung Lee),강정원(Jeong-Won Kang),심재구(Jae-Koo Shim),손득균(Deuk-Kyun Son) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.5
In this paper, the performance analysis is experimentally carried out in order to select the best cooling fan and shroud considering both cooling performance and noise reduction. 4 cooling fans have been tested in the fan tester and the real excavator. In order to obtain the performance of the cooling fans, flow capacity has been estimated by measuring flow velocity using a hot wire anemometer, and noise radiation has been also measured to estimate the fan noise. Characteristics of a box-type and a streamlined shroud have been examined by changing the immersion depth of cooling fans. Based upon the results, the best cooling fan is selected. Finally, the criterion to select the best cooling fan has been set up.
탈묵펄프용 표백약품에 따른 표백 특성 및 표백폐수의 환경부하 영향
안치덕(Chi-Deuk Ahn),박정윤(Jung-Yoon Park),황성준(Sung-Jun Hwang),홍석준(Seok-Jun Hong),이진희(Jin-Hee Lee),김형진(Hyoung-Jin Kim),정성현(Sung-Hyun Chung) 한국펄프·종이공학회 2015 펄프.종이기술 Vol.47 No.1
DIP(deinked pulp) was bleached by FAS, Na₂S₂O₄ and H₂O₂, which are widely used in DIP bleaching process, in order to improve optical properties of DIP, and the bleaching efficiencies of DIP and environmental loads of waste water were compared, depending on bleaching chemical dosages. With the application of different bleaching chemicals, some positive improvements were shown in optical and physical properties of bleached pulp. However, the physical properties of bleached DIP and their characteristics of wastewater were remarkably different, depending on dosages and bleaching reagents. DIP chemicals with FAS and Na₂S₂O₄ have higher improvement in optical and physical properties than H2O2. Also, environmental loads such as pH, turbidity, SCODcr and cationic demand were decreased in reductive bleaching process. Despite of higher effectiveness of reductive bleaching process, there were some environmental problems caused by sulfur ions from FAS and Na₂S₂O₄. With the method of sulfur ion controls, it would be more effective than H₂O₂ bleaching process.