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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.
신경회로망에 의한 용접 결함 종류의 정량적인 자동인식 시스템 개발에 관한 연구
김재열,김영석,김병현,유신,김훈조,정진홍 한국공작기계학회 1997 한국생산제조학회지 Vol.6 No.1
A neural network approach has been developed to determine the depth of a surface breaking crack in a steel plate from ultrasonic backscattering data. The network is trained by the use of feedforward three-layered network together with a back-scattering algorithm for error correction. The signal used for crack insonification is a mode converted 70˚ transverse wave. A numerical analysis of back scattered field is carried out based on elastic wave theory, by the use of the boundary element method. The numerical data are calibrated by comparison with experimental data. The numerical analysis provides synthetic data for the training of the network. The training data have been calculated for cracks with specified increments of the crack depth. The performance of the network has been tested on other synthetic data and experimental data which are different form the training data.
曺章煥,吳正行,蔡濟天,鄭吉雄,金鳳九 단국대학교 1992 論文集 Vol.26 No.-
This study has been conducted to investigate the genetic and ecological variation of wheat culm length measured from those plants grown at greenhouse. The results are as following. 1. The clum length of the winter wheat was higest under 12hrs daylength, while that of the spring wheat was highest under 8hrs daylength. Standard errors of culm length was larger under 12 and 8hrs daylength than that of 24hrs daylength condition. 2. The culm length was shortest under the 24hrs daylength compare to under 12 or 8hrs while it was highest under 12hrs. Short and medium culm length varieties were photo-insensitive but those of long culm length were photo-sensitive. 3. There are many types of varietal differences for the culm length under the daylength conditions. Highest culm length group under 12 and 8hrs conditions was classified. The semi-dwarf varieties that did not change their plant heights under i and 12hrs conditions were Hira, Yecora Resel, Sava, Sturdy, Saric 70, Sekidorisai 66etc. 4. Varietal difference of culm elongation was noticed between 8hrs and 12hrs daylength condition. On the basis of the evidences obtained from this experiment, it may be concluded that the genetic studies related to culm length should be carried out under the most favorable conditions for culm elongation. 5. Correlation coefficients estimated between culm length and heading or maturity were negative but insignificant, but their correlations were highly significant between photo treatments. 6. Culm length of F_1 was intermediate to the range of F_2 population which seems to be distributed normally. In this regard the gene involved with culm length seemingly inherit additively. Statistical analysis for the involved genes for culm length suggested 2 genes for the semidwarf variety Robin #2.
곰쓸개 복용 후 발생한 육안적 혈뇨와 신유두부 괴사증 1예
김우진,한민석,김수항,박인형,박진석,선제형,홍세인,박옥영,신정현,이숭,신병철 朝鮮大學校 附設 醫學硏究所 2006 The Medical Journal of Chosun University Vol.31 No.3
Renal papillary necrosis occurs most commonly in association with urinary tract infection, diabetes mellitus, sickle cell disease, vascular disease, and analgesic nephropathy. Clinical presentation may be related to symptoms of pyelonephritis such as flank pain, renal colic, hematuria, Proteinuria, recurrent fever. The necrotic tissue may be sloughed off, and the diagnosis can sometimes be made by finding piece of renal medullary tissue in the urine. Pyelography may demonstrate cavities and sinuses in the resion of papillae. Anuria & oliguria can lead to the acute renal failure, and especially prognosis and progress may be affect influenced by urinary infection. We report a case of renal papillary necrosis with ingestion of bear gallbladder. On pyelography, Persistent contrast is diagnostic clue of renal papillary necrosis. This case is not be related to urinary tract infection, but occurred acute renal failure. Expectant treatment was gone.
Empirical medical therapy in idiopathic male infertility: Promise or panacea?
Jung, Jae Hung,Seo, Ju Tae The Korean Society for Reproductive Medicine 2014 Clinical and Experimental Reproductive Medicine Vol.41 No.3
Male factors account for 20%-50% of cases of infertility and in 25% of cases, the etiology of male infertility is unknown. Effective treatments are well-established for hypogonadotropic hypogonadism, male accessory gland infection, retrograde ejaculation, and positive antisperm antibody. However, the appropriate treatment for idiopathic male infertility is unclear. Empirical medical treatment (EMT) has been used in men with idiopathic infertility and can be divided into two categories based on the mode of action: hormonal treatment and antioxidant supplementation. Hormonal medications consist of gonadotropins, androgens, estrogen receptor blockers, and aromatase inhibitors. Antioxidants such as vitamins, zinc, and carnitines have also been widely used to reduce oxidative stress-induced spermatozoa damage. Although scientifically acceptable evidence of EMT is limited because of the lack of large, randomized, controlled studies, recent systematic reviews with meta-analyses have shown that the administration of gonadotropins, anti-estrogens, and oral antioxidants results in a significant increase in the live birth rate compared with control treatments. Therefore, all physicians who treat infertility should bear in mind that EMT can improve semen parameters and subsequent fertility potential through natural intercourse.
Surglcal : Testicular Torsion as an Overlooked Cause of Acute Abdomen
( Jae Hung Jung ),( Kyoung Chul Cha ),( Hyun Chul Chung ),( Yong Sung Cha ),( Seung Hoon Ryang ),( Tae Wook Kang ),( Chang Min Lee ),( Kwang Jin Kim ) 대한응급의학회 2014 대한응급의학회지 Vol.25 No.3
Acute scrotal pain is a common urologic presentation and critical pathology due to the possibility of organ loss in the emergency department. Referred pain in the lower quadrant of the abdomen may accompany testicular torsion. Of 58 patients with testicular torsion between January 2001 and March 2011, three visited the emergency department with abdominal pain alone. The median age of the patients was 16 years (range, 13-19). Median duration of abdominalpain to first medical examination and proper diagnosis by an urologist was 14 hours (range, 2-168) and 77 hours (range, 57-240), respectively. All patients underwent orchiectomy. Due to symptomatic variations for testicular torsion, all clinicians providing emergency care to patients who have referred pain in the lower abdomen without scrotal pain should consider the constellation of symptoms in order to avoid superfluous diagnostic delay.
복막 투석 환자에서 도관 관련 감염 및 복막염에 대한 Mupirocin 과 Catheter Revision 의 효과
정항재(Hang Jae Jung),도준영(Jun Young Do),윤경우(Kyung Woo Yoon),박준범(Jun Bum Park),조규향(Kyu Hyang Jo),김정미(Jung Mi Kim),최준혁(Jun Heuk Choe),김영진(Yeung Jin Kim) 대한신장학회 2000 Kidney Research and Clinical Practice Vol.19 No.3
N/A Background: Exit site/tunnel infection causes con-siderable morbidity and technique failure in CAPD patients. We presently use a unique revision method for the treatment of refractory ESl/TI in CAPD patients and mupirocin prophylaxis for high risk patients. Methods : We reviewed one hundred-thirty nine CAPD patients about the ESI/TI from Qctober 1993 to February 1999 at Yeungnam University Hospital. At the beginning of the ESI, we usually started me-dications with rifampicin and ciprofloxacin and then changed the antibiotics according to the sensitivity test. If the ESI had persisted and there were TI symptoms(purulent discharge, abscess lesion around exit site), we performed catheter revision(external cuff shaving, disinfection around tunnel and new exit site on opposit direction) with a combination of proper antibiotics. We applied local mupirocin ointment at the exit site three times per week to the 34 patients who had the risk of ESI starting from October 1998. Results : The total follow-up was 2401 patient months(pt.mon). ESI occurred on 105 occasions in 36 out of 139 patients, and peritonitis occurred on 112 occasions in 67 out of 139 patients. Cumulative incidence of ESI and peritonitis was 1 per 23.0 pt.mon and 1 per 21.6 pt.mon. The most common organism responsible for ESI was Staphylococcus aureus(26 of 54 isolated cases, 43%), followed by Methicillin resistant S. aureus(MRSA)(13 cases, 24%). Seven patients (5: MRSA, 2: Pseudomonas) had to be treated with a revision to control infection. Three patients experienced ESI relapse after revision. One of them im-proved with antibiotics, while another needed a second revision and the remaining required catheter removal due to persistent MRSA infection with re-insertion at the same time. But, there was no more ESI in these 3 patients who were received management to relapse(The mean duration : 14.0 months) The rates of ESI were more reduced after using mupi-rocin than before(l per 12.7 vs 34.0 pt.mon, p<0.01). Conclusion: In summary, revision technique can be regarded as an effective method for refractory ESI/TI before catheter removal. Also local mupirocin ointment can play a significant role in the prevention of ESI.
Drill Ship용 수직 이동형 Derrick System의 신뢰도 향상을 위한 연구
박재항(Jae Hang Park),배재일(Jae Il Bae),정재욱(Jae Wook Jung) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12
Safety and reliability is import factor because of bad working condition on offshore plant. Derrick is the highest part in drilling system and should be controlled in safety manual. Normal derrick structure is built at top side of the plant and effected on sea wave, strong wind and risk environment. So, center of gravity at derrick is important factor for controlling attitude of offshore plant. This study shows improvement of more stable structure through vertical moving derrick system. We worked failure proof analysis through RBD & FMEA at early design stage. And structure analysis and mock-up test are carried out to verify vertical moving function at new concept of derrick system.