수술 전 이하선 종괴의 위치파악에 이용하는 해부학적 경계표의 유용도

임치영(Chi Young Lim),김국진(Kook Jin Kim),임성주(Sung Ju Lim),이잔디(Jan dee Lee),남기현(Kee Hyun Nam),장항석(Hang Seok Chang),정웅윤(Woong Youn Chung),최홍식(Hong Shik Choi),박정수(Cheong Soo Park) 대한두경부종양학회 2006 대한두경부 종양학회지 Vol.22 No.1

Background: The location of parotid gland tumors can influence the duration and the difficulty of the operation. If the information about tumor location was available preoperatively, it would allow accurate operative planning and counseling of patients in terms of the length of the operation and the potential morbidity. Methods: This study was based on a retrospective review of 100 patients with parotid gland tumors underwent parotidectomy from January 2000 to October 2005 at Yong-Dong Severance Hospital. Based on computed tomographic(CT) scan findings, 4 landmarks such as facial nerve(FN) line, Utrecht(U) line, Conn's are(CA), and retromandibular vein (RV) were drawn on the scans in same plane. The location of tumors were determined by the landmarks and confirmed by the operative findings. The accuracy of each landmarks was evaluated. To find out the accuracies according to tumor size, the tumors were divided into 2 groups; less than 2 cm and larger than 2 cm in diameter. Results: U line was the most accurate(94%), sensitive(89.3%) and specific(97.7%) in predicting tumor location of the parotid gland. However, in small tumors less than 2cm, FN line (p=0.022) and RV criteria (p=0.028) were more reliable in accuracy. Conclusion: CA, FN line, U line, and RV are all useful landmarks in preoperative prediction for the location of parotid gland tumors. However, U line was the most accurate, but we must consider that proper landmark should be used in prediction according to the size of tumor because the accuracy of landmark may change.

반추수(反芻獸)의 창상성간염(創傷性肝炎) 및 비염(脾炎)에 관한 실험적(實驗的) 연구(硏究)

정창국,성재기,남치주,Cheong, Chang-Kook,Sung, Jai-Ki,Nam, Tchi-Chou 대한수의학회 1982 大韓獸醫學會誌 Vol.22 No.2

The traumatic hepatitis and splenitis were experimentally induced in Korean native goats. General examinations, hematological and blood biochemical findings were investigated up to 10 days after induction of traumatic hepatitis and splenitis. Body weight of goats with traumatic hepatitis and splenitis showed no change or only a slight decrease. Changes in body temperature and respiratory rate were not noted in both experimental groups. Heart rate hart not been changed in traumatic splenitis group but were a little increased in traumatic hepatitis group. Erythrocytic series such as erythrocyte counts, hemoglobin concentration and packed cell volume showed same variation within normal range during the period of observation. Total leucocyte counts showed the considerable increase in both experimental groups. The increase of the percentage of neutrophil and the decrease of the percentage of lymphocyte were more remarkable in traumatic hepatitis group than that of traumatic splenitis group. Serum aspartate transferase activity was increased in both experimental groups after surgery, while serum alkaline phosphatase activity has been decreased conciderably up to 7 days after surgery. Serum lactic dehydrogenase activity has been increased up to 3 days after operation and thereafter the activity has returned to normal level in traumatic hepatitis group and the activity increased only the first day after surgery in traumatic splenitis group. There were no changes in total protein and albumin contents in both experimental groups during the period of observation. Serum total cholesterol contents showed a slight increase in both experimental groups and the range of increase in traumatic hepatitis group was more wide. Serum bilirubin contents were net changed in traumatic hepatitis group, but showed a slight increase in traumatic splenitis group.

Abdominal Maduromycosis in a dog

박응복,정창국,임창형,Bak, Ung-Bok,Cheong, Chang-Kook,Lim, Chang-Hyeong The Korean Society of Veterinary Science 1982 大韓獸醫學會誌 Vol.22 No.1

만성(慢性) 소화기장애(消化器障碍)로 수술(手術)을 받고 폐사한 3세의 개를 부검(剖檢)하여 복강(腹腔)에서 커다란 균종(菌腫)을 발견하였다. 이 개의 품종(品種)은 Labrador Retriever 종(種)이고 프랑스에서 난소적출(卵巢摘出) 수술(手術)을 하여 한국(韓國)에 데려왔다. 균종(菌腫)은 직경(直徑) 8~15cm, 두께 2~6cm에 달하는 종류(腫瘤)로서 비미부(脾尾部)의 복면(腹面), 공장(空腸), 회장(廻腸), 맹일결장(盲一結腸)의 일부 장벽(腸壁) 및 좌측 횡격막(橫隔膜)과 단단한 유착(癒着)을 일으키고 있었다. 균종(菌腫)의 단면(斷面)에서는 회갈색(灰褐色)에 육아조직(肉芽組織)에 율립대(栗粒大)의 황백색(黃白色) 농양과립(膿瘍顆粒)이 밀발(密發)해 있는 것을 알 수 있었다. 병소부위(病巢部位)의 조직학적(組織學的) 검사(檢査)에서 장벽(腸壁)의 내수주근층(內輸走筋層)의 극심한 대상성비대(代償性肥大), 균강(菌腔)과 관련된 복강장기(腹腔臟器)에서의 광범한 hemosiderin 침착(沈着) 및 비주동맥(脾柱動脈)의 혈전증(血栓症)과 그 중막(中膜)의 atheroma 성(性) 비후(肥厚)등을 관찰하였다. 이와 같은 만성병변(慢性病變)으로 인하여 이 개는 정상개의 반 밖에 자라지 않고 있었다. 균종(菌腫)내의 균괴(菌塊)를 현미경 관찰하여 균사(菌絲)와 후막포자(厚膜胞子)의 특징으로써 Ailescheria boydii 의 감염(感染)이 추정되었다. A massive mycetoma was observed in the abdominal cavity of a 3-year-old spayed female Labrador Retriever dog originated from France. The mycetoma lesion involved adhesion with one-half of the spleen, several portions of the small and large intestine, and the diaphragem. Histologically the distinct hypertrophy of the intestinal muscle layer, wide-spread deposition of the hemosiderin through the affected abdominal organs and thrombosis of splenic arterioles with atheromatous change were recognized as persistant, debilitating changes of the affected organs. From the histological appearance of the fungal colonies it was presumed that the causative fungus to be identified as Allescheria boydii.

강원도지방 한우의 지방병에 관한 조사연구 - 1. 피부의 위축성 변화에 관한 연구

최희인,이창우,박응복,정창국,성재기,한홍율,Choi Hee in,Lee Chang Woo,Bak Ung Bok,Cheong Chang Kook,Sung Jai Ki,Han Hong Ryul 대한수의사회 1982 대한수의사회지 Vol.18 No.2

As a preliminary survey to understand the possible causes of atrophic skin change of Korean cattle clininical, hematological, blood chemical and histo pathological examinations were done during prevalent period and convalescent period of the disease on ra

제사위전위증유우에 있어서 몇가지 혈청전해질 농도에 관한 조사연구

이사균,정창국,Lee Sa-Kyun,Cheong Chang-Kook 한국임상수의학회 1985 한국임상수의학회지 Vol.2 No.1

The concentrations of serum calcium, inorganic phosphorus, sodium and potassium from 24 cows with left displacement of abomasum and 21 cows with right displacement of abomasum on pre and postoperation were determined. 1. The preoperative levels of serum calcium in left and right displacement of abomasum were below normal and returned to normal levels postoperatively. 2. The preoperative levels of serum inorganic phosphorus in left and right displacement of abomasum showed slight increase preoperatively and consistent slight rise postoperatively. 3. The preoperative levels of serum sodium in left and right displacement of abomasum were slightly below normal and maintained low levels postoperatively. 4. The preoperative levels of serum patassium in left and right displacement of abomasum were low normal limit and increased to upper normal limit postoperatively.

Thermomechanical properties and shape memory effect of epoxidized natural rubber crosslinked by 3-amino-1,2,4-triazole

Chang, Young-Wook,Mishra, Joy K,Cheong, Jong-Hoon,Kim, Dong-Kook John Wiley Sons, Ltd. 2007 Polymer international Vol.56 No.5

<P>A thermally induced shape memory polymer based on epoxidized natural rubber (ENR) was produced by curing the ENR with 3-amino-1,2,4-triazole as a crosslinker in the presence of bisphenol-A as a catalyst. Dynamic mechanical and tensile analysis was conducted to examine the variation of glass transition temperature, stiffness, and extensibility of the vulcanizates with the amount of curatives. Shape memory properties of the ENR vulcanizates were characterized by shape retention and shape recovery. It was revealed that the glass transition temperature of the ENR vulcanizates could be tuned well above room temperature by increasing the amount of curing agents. Also, ENR vulcanizates with T<SUB>g</SUB> higher than ambient temperature showed good shape memory effects under 100% elongation, and the response temperatures of the recovery were well matched with T<SUB>g</SUB> of the samples. Copyright © 2006 Society of Chemical Industry</P>

<i>In Situ</i> High-Resolution Transmission Electron Microscopy (TEM) Observation of Sn Nanoparticles on SnO₂ Nanotubes Under Lithiation

Cheong, Jun Young,Chang, Joon Ha,Kim, Sung Joo,Kim, Chanhoon,Seo, Hyeon Kook,Shin, Jae Won,Yuk, Jong Min,Lee, Jeong Yong,Kim, Il-Doo Cambridge University Press 2017 Microscopy and Microanalysis Vol.23 No.6

<B>Abstract</B><P>We trace Sn nanoparticles (NPs) produced from SnO2 nanotubes (NTs) during lithiation initialized by high energy e-beam irradiation. The growth dynamics of Sn NPs is visualized in liquid electrolytes by graphene liquid cell transmission electron microscopy. The observation reveals that Sn NPs grow on the surface of SnO2 NTs via coalescence and the final shape of agglomerated NPs is governed by surface energy of the Sn NPs and the interfacial energy between Sn NPs and SnO2 NTs. Our result will likely benefit more rational material design of the ideal interface for facile ion insertion.</P>

Extended Pyelotilhotomy에 對한 臨床的 考察

張世國,朴允圭,徐石柱,安武植,鄭洙光 慶北大學校 醫科大學 1977 慶北醫大誌 Vol.18 No.1

最近 3年間 慶北大學校 醫科大學 泌尿器科學敎室에 來院한 腎結石患者 12例에서 extended pyelolithotomy을시행하였고 그 方法, 經過 및 結果를 臨床觀察하였다. 1例를 除外한 11例에서 이 手術法으로 腎損傷의 정도를 적게하고 腎盂 및 腎杯노출을 쉽게하여 완전하게 結石을 除去할 수 있었으나 輕度의 合倂症發生은 있었으나 完全治療되었기에 文獻的 考察과 아울러 報告하는 바이다. An ideal operation for removal of renal calculi should allow for minimal destruction of renal parenchyma and complete remove of calculus. In 1965 Gil Vernet revived the extended pyelolithotomy in the surgical approach. This technique provides accesibility to infundibular and caliceal calculi and is especially helpful in the removal of an intrarenal pelvic calculus. The authors appled this extended pyelolithotomy to twelve patients with renal calculi in this department of urology during last 3 years. There was no morbidity related to this procedure in all cases except on who needed nephrectomy because of tearing of the posterior renal artery during the operation.

Newcastle Virus (B₁ Strain)에 대(對)한 항체형성(抗體形成)에 미치는 닭의 Fabricius' Bursa의 영향(影響)

조병률,정창국,Cho, Byung Ryul,Cheong, Chang Kook 대한수의학회 1962 大韓獸醫學會誌 Vol.2 No.1

Chang et al. 및 Glick 등은 어린 닭에있어 Fabricius' Bursa가 면역항체형성(免疫抗體形成)에 영향(影響)를 미치는것을 관찰보고(觀察報告)한바있다. 즉(卽) S.typhimurium antigen 또는 양적혈구(羊赤血球)를 주사(注射)하였을경우 Fabricius' Bursa를 적출(摘出)한 어린 닭에 있어서는 면역항체형성(免疫抗體形成)의 감소(減少)를 보았다고 하며 또한 Bursectany를 한 닭에 있어서는 S.typhimurium 주사(注射)로 인(因)한 폐사율(斃死率)이 보다 높았다고 한다. 이러한 Fabricius' Bursa의 영향(影響)은 부화후(孵化後) 처음 몇주(週)에 있어 가장 현저(顯著)하며 닭의 성장(成長)과 덥으로 점차 감소(減少)됨을 보고(報告)하고 있다. 그러나 이들의 연구(硏究)에는 그의 본질(本質)이 같은 세포성(細胞性)인 항원(抗原)만이 사용(使用)되었을 뿐만 아니라 그의 접종방법(接種方法)도 근육내(筋肉內) 및 정맥내(靜脈內)의 두 방법(方法)에 한(限)하였다. 면역항체(免疫抗體)를 형성(形成)하는 여러 기관조직(器官組織)의 항체형성(抗體形成)에의 비율적관여(比率的關與)는 항원(抗原)의 본질(本質) 그의 접종방법(接種方法)등에 따라 다르므로 여기에 필자(筆者)들은 Virus 항원(抗原)인 Newcastle Virus ($B_1$ strain)를 경비적(經鼻的)으로 접종(接種)하였을 경우의 Fabricius' Bursa의 항체(抗體) 형성(形成)에 미치는 영향(影響)을 연구(硏究)하였다. 부화후(孵化後) 3주(週)되는 Leghorn종(種)의 어린 닭의 Fabricius' Bursa를 적출(摘出)하고 1주일후(週日後)에 Newcastle Virus ($B_1$ strain)를 경비적(經鼻的)으로 접종(接種)하였던 바 HI반응(反應)에 의(依)한 그의 혈청역가(血淸力價)(serum titer)는 정상(v)Control group의 그것에 비(比)하여 통계학적(統計學的)으로 의의(意義)있는 차(差)가 없음을(P>0.1) 보았다. Chickens of Leghorn breed were bursectomized at 3 weeks of age and inoculated intranasally at 4 weeks of age with the $B_1$ strain of NDV. There was no statistically significant difference(P>0.1) in the serum titers (HI test) between the bursectomized chickens and the control chickens.

Extended Pyelolithotomy에 對한 臨床的 考察

張世國,朴允圭,徐石柱,安武植,鄭洙光 慶北大學校 醫科大學 1977 慶北醫大雜誌 Vol.18 No.1