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안진홍,이정균,이경근 圓光大學校 醫科學硏究所 1999 圓光醫科學 Vol.15 No.2
Primary retroperitoneal mucinous cystic tumors are very rare. In the world wide literature, only 20 cases have been reported. We report a case of retroperitoneal mucinous tumor found at laparotomy. The mass was uniloculated and 20×20 ㎝ in size. Pathologically examination revealed a mucinous cystadenoma with borderline malignancy, low grade. Preoperative diagnosis in patient was ovarian carcinoma based on clinical and computerized tomography findings. Similar previously reported cases and their possible pathogenetic mechanisms are discussed.
안진홍,소병준,이정균 圓光大學校 醫科學硏究所 1998 圓光醫科學 Vol.14 No.2
Purpose: We performed this study to evaluate certain factors and events contributing to the overall profile of the victim of abdominal trauma. Methods: 73 cases were analysed retrospectively who underwent operation for gastrointestinal injury from abdominal trauma at Wonkwang University Hospital from january 1995 to June 1998. Blunt injury account for 59 cases( 80%) and penetrating injury for 14 cases(20%) of the victims. Results: 1) The sex distribution was 62 males(85%) and 11 females(15%) with ratio of 5.6:1 and the age distribution revealed a high incidence in forths and fifth decades. 2) The causes of blunt trauma were traffic accidents (39 cases, 68.4%), violence (10 cases, 17.5%), and fall down (5cases, 8.8%),. The causes of penetrating trauma were stab injury (14 cases, 87.5%) and others (2 cases). 3) The clinical manifestations were abdominal tenderness (71.2%), abdominal pain(68.5%), rebound tenderness(52%), decreased bowel sound(38.3%), and abdominal distention(15%). 4) The plain films of abdomen showed free air under the diaphragm in 13 cases(17.8%) among the 73 cases of hollow viscus ruptures. Abdominal paracentesis was performed in 54 cases among 73 cases of hollow viscus rupture, of which 32 cases(59.3 %) revealed positive findings. 5) The peritoneal lavage was valuable in diagnosis, positive findings was 16 cases(84.2%) among 19 cases. 6) The injuried organs were small intestine (53 cases, 72.6%), colon(21cases, 28.8%). 7) The commonly associated extraabdominal injury were extremity fractures (38.2%), chest trauma(29.4%) and soft tissue injury(11.7%). 8) Postoperative complication were developed in 34 cases(46 %), which were intestinal obstruction (10 cases), pulmonary complication (7 cases), wound infection (6 cases), intraabdominal abscess (4 cases). 9) The overall mortality rate was 5.4 %. The causes of death were sepsis (2 cases), hypovolemic shock (1 case), and renal failure (1 case). The deaths and complications were increased by severe associated injuries(1 death in 28cases of 2 organ injury and 2 death in 11 casess of 3 or more organ injury) and diagnostic delay (1 death in 6cases of delayed operation). Conclusions: Repeated physical examinations, tests, and careful attention will be required in abdominal injury to avoid complicaton and mortality.
Jeong, Su Jin,Kim, Min Hyung,Song, Je Eun,Ahn, Jin Young,Kim, Sun Bean,Ann, Hea Won,Kim, Jae Kyung,Choi, Heun,Ku, Nam Su,Han, Sang Hoon,Kim, June Myung,Smith, Davey M.,Kim, Hyon-Suk,Choi, Jun Yong MARY ANN LIEBERT INC PUBL 2014 AIDS Research and Human Retroviruses Vol. No.
<P>Less costly but still accurate methods for monitoring HIV treatment response are needed. We prospectively evaluated if a qualitative polymerase chain reaction (PCR) amplification assay for virologic monitoring could maintain accuracy while reducing costs in Seoul, South Korea. We conducted the first prospective study comparing a qualitative PCR amplification of HIV-1 reverse transcriptase (RT) versus a commercial real time PCR assay (i.e., viral load) for virologic monitoring of 150 patients receiving antiretroviral therapy (ART) between November 2011 and August 2012 at an urban hospital in Seoul, South Korea. A total of 215 blood plasma samples from 150 patients receiving ART for more than 6 months were evaluated. Using the individual viral load assay, 12 of 215 (5.6%) plasma samples had more than 500 HIV RNA copies/ml. The qualitative PCR amplification assay detected individual samples with 500 HIV RNA copies/ml with 100% sensitivity. The specificities of the qualitative PCR amplification of the HIV-1 RT assay were 94.1%, 93.6%, and 93.2% compared to the real time PCR at 500, 1,000, and 5,000 threshold of HIV RNA copies/ml, respectively, and $24,940 USD would have been saved for 150 patients during 10 months. The qualitative PCR amplification of the HIV-1 RT assay might be a useful approach to effectively monitor patients receiving ART and save resources.</P>
납석/슬래그/제올라이트를 이용한 가축매몰지 침출수 제거
박정안 ( Jeong-ann Park ),김재현 ( Jae-hyun Kim ),강진규 ( Jin-kyu Kang ),윤서영 ( Seo-young Yoon ),손정우 ( Jeong-woo Son ),김성배 ( Song-bae Kim ) 한국농공학회 2013 한국농공학회 학술대회초록집 Vol.2013 No.-
본 연구는 가축매몰지로부터 유출되는 침출수의 주 오염원인 NH<sub>4</sub><sup>+</sup>, Cl<sup>-</sup>, PO<sub>4</sub><sup>2-</sup>을 납석/슬래그/제올라이트를 각각 이용하여 제거하고자 하였다. 입경을 투수성을 고려하여 0.60-0.85 mm의 크기만을 선별하여 칼럼실험에 사용하였으며, 사용된 칼럼은 내경 2.5 cm, 높이 10 cm이다. 가축 매몰지 침출수는 문헌의 평균 침출수의 농도(약 NH<sub>4</sub><sup>+</sup>12,000 mg/L, Cl- 2,500 mg/L, PO<sub>4</sub><sup>2-</sup> 4,300 mg/L)로 맞추어 실험실에서 제조하여 동일한 농도의 오염원을 주입하였다. 유입유량은 0,3 ml/min으로 50 시간동안 주입하였으며, 유출수는 오토샘플러를 통해 10분 간격으로 받아 이온크로마토그래프(IC)로 각 이온의 농도를 분석하였다. 슬래그의 경우 흡착제 단위 g당 오염물질 흡착량을 살펴보면, NH<sub>4</sub><sup>+</sup>5,689 mg/g, Cl-1,224 mg/g, PO<sub>4</sub><sup>2-</sup> 3,409 mg/g으로 나타났으며, 제올라이트는 특히 NH<sub>4</sub><sup>+</sup>에 대한 흡착량이 32,608 mg/g으로 가장 높게 나타났으며 제거율은 50.28 %이며, PO<sub>4</sub><sup>2-</sup> 9,090 mg/g, Cl- 1,797 mg/g으로 나타났다. 납석의 경우 세 이온모두 12-18 %로 슬래그나 제올라이트에 비해 제거 효율이 전반적으로 낮게 측정되었다. 결론적으로 암모니아성 질소의 경우 제올라이트 (50.28 %), 납석(18.82 %), 슬래그 (18.18 %)순으로 제거효율이 높았으며, 인산염의 경우 제올라이트 (39,3 %), 슬래그 (30.55 %), 납석 (13.26 %) 순으로 나타났고, 염소이온의 경우 흡착제별 영향이 거의 없고 12 % 미만으로 제거되는는 것으로 조사되었다.
정종안,정수미,노영만,전홍렬,안정조,전상윤,김희철,홍석,김성진,Jeong, Jong-Ann,Jeong, Soo-Mi,Roh, Young-Man,Jeon, Hong-Ryul,Ann, Jeong-Jo,Jeon, Sang-Yun,Kim, Hee-Chul,Hong, Seok,Kim, Sung-Jin 대한한방내과학회 2006 大韓韓方內科學會誌 Vol.27 No.2
The purpose of this study is to present a case of gaze palsy due to thalamic infarction improved by acupuncture and herb medicine. Monocular gaze palsies which result from a supranuclear cerebral lesion are rare clinical manifestations. The pre-frontal cortico-oculomotor pathways travel across the thalamus and mesodienphalic junction terminating directly in oculomotor complexes. The acute disinhibition of these neurons by a posterior thalamic lesion results in a sustained but transient discharge of the medial rectus and tonic activation. Results of this study suggest a role for conservative therapy with herb medicine and acupuncture to treat gaze palsy due to thalamic infarction. Further research into oriental medical treatment for such disorders will be forthcoming.
Bacteriophage removal in various clay minerals and clay-amended soils
Jeong Ann Park,Jin Kyu Kang,Jae Hyun Kim,Song Bae Kim,Seungho Yu,Tae Hun Kim 대한환경공학회 2015 Environmental Engineering Research Vol.20 No.2
The aim of this study was to investigate the bacteriophage removal in various clay minerals and clay-amended soils. Batch experiments in kaolinite, montmorillonite, and bentonite showed that kaolinite was far more effective at the MS2 removal than montmorillonite and bentonite. In kaolinite, the log removal increased from 0.046 to 2.18, with an increase in the adsorbent dose from 0.3 to 50 g L-1, whereas the log removals in montmorillonite and bentonite increased from 0.007 to 0.40 and from 0.012 to 0.59, respectively. The MS2 removal in kaolinite-amended silt loam soils was examined at three different soil-to-solution (STS) ratios. Results indicated that the log removal of MS2 increased with an increase in the kaolinite content and the STS ratio. At the STS ratio of 1:10, the log removal of MS2 increased from 2.33 to 2.80 with an increase in the kaolinite content from 0% to 10% in kaolinite-amended soils. The log removals of MS2 at the STS ratios of 1:2 and 1:1 increased from 2.84 to 3.47 and from 3.46 to 4.76, respectively, with an increase in the kaolinite content from 0% to 10%. Results also indicated that the log removals of PhiX174 and Qβ in kaolinite-amended soils were similar to each other, but they were far lower than those of MS2 at all the kaolinite contents. The log removal of PhiX174 increased from 0.16 to 0.32, whereas the log removal of Qβ changed from 0.17 to 0.22 with an increase in the kaolinite content from 0% to 10%.
Ann Jelyn Tiempo,Woo-Young Jung,Yong-Jin Jeong 대한전자공학회 2020 Journal of semiconductor technology and science Vol.20 No.2
Several verification and detection methods have been proposed to prevent and mitigate the effects of hardware trojans. However, existing hardware trojan designs appeared in the literature are limited and simple which limits the capability of existing detection methods. In this paper, a new hardware trojan is proposed based on linear feedback shift register (LFSR) and extends its stealthiness by adding a shift register, which results undetected by existing state-of-the-art detection algorithms. In addition, extending an existing detection method to attain possible defense is implemented by using a comparison scheme. Experimental results show that the new hardware trojan evades existing detection method and further can be detected by the proposed extended algorithm.
[6]-Gingerol Suppresses Colon Cancer Growth by Targeting Leukotriene A<sub>4</sub> Hydrolase
Jeong, Chul-Ho,Bode, Ann M.,Pugliese, Angelo,Cho, Yong-Yeon,Kim, Hong-Gyum,Shim, Jung-Hyun,Jeon, Young-Jin,Li, Honglin,Jiang, Hualiang,Dong, Zigang American Association for Cancer Research 2009 Cancer Research Vol.69 No.13
<P>[6]-Gingerol, a natural component of ginger, exhibits anti-inflammatory and antitumorigenic activities. Despite its potential efficacy in cancer, the mechanism by which [6]-gingerol exerts its chemopreventive effects remains elusive. The leukotriene A(4) hydrolase (LTA(4)H) protein is regarded as a relevant target for cancer therapy. Our in silico prediction using a reverse-docking approach revealed that LTA(4)H might be a potential target of [6]-gingerol. We supported our prediction by showing that [6]-gingerol suppresses anchorage-independent cancer cell growth by inhibiting LTA(4)H activity in HCT116 colorectal cancer cells. We showed that [6]-gingerol effectively suppressed tumor growth in vivo in nude mice, an effect that was mediated by inhibition of LTA(4)H activity. Collectively, these findings indicate a crucial role of LTA(4)H in cancer and also support the anticancer efficacy of [6]-gingerol targeting of LTA(4)H for the prevention of colorectal cancer.</P>