I_2 O_2법에 의한 연탄연소 가스중 CO의 정량분석

정기호,李源國 陸軍士官學校 1976 한국군사학논집 Vol.16 No.-

Analytical determination of carbon monxide cantent in the anthracite flue gas was carried out with the method of iodine pentoxide. This flue gas contains about 1 to 2 volume percents of CO, in general, 8 to 9% of CO_2 15% of O_2, 75% of N_2 and an trace(less than 0.04%) of H_2 on dry basis. Temperature(above 100℃) of the iodine pentoxide was not a sensitive factor of carbon monxide oxidation when working with anthracite flue gas.

양평군 주민자치협의회 정기회의

정기호,김수연,박상규,이순화,이승재,최병철,박봉주,신선영,박재영,한선동 한국자치학회 2020 월간 주민자치 Vol.104 No.-

항공운송산업의 규제완화 정책

정기호 釜山女子專門大學 2001 釜山女子專門大學 論文集 Vol.23 No.-

1978년 카터행정부의 규제완화정책은 세계항공운송산업에 커다란 영향을 주었다. 세계 항공운송시장의 약 36% 이상을 점유하고 있는 미국의 이러한 정책은 필연적으로 다른 국가의 정책을 변화시켰고,이는 규제완화가 세계적인 흐름이 되게 만들었다. 그 결과 최근의 국제적인 경향은 규제의 완화에 의한 자유화로 규정지을 수있다. 따라서 여기서는 1978년 미국 카터 행정부의 규제완화정책에 의해 시작된 규제완화의 세계적인 동향을 살펴서,우리나라 항공운송산업 정책에 하나의 자료를 제공하고자 한다. The air transport business, aimed at public, is characterized as the public undertaking enterprise. Everyone would be able to use airline freely to move and load cargoes. And the air transport service must be secured against all danger Because of these circumstances, governmental regulation of air transport is very wide range and various. The deregulation policy of James Earl Carter’øs Government in 1978 had influences on the air transport policies of many european and asian nations, and then the deregulation and liberalization become the current of the times. In the result, recently international trend is to define as liberalization by deregulation. Therefore, this paper aim to provide, the material, made by the study on the deregulation policies of other nations, for drawing up a new air transport policy of our nation. The contents of this paper is as follows; Ⅰ. Introduction Ⅱ. The Underground of The Regulation and Deregulation Policy Ⅲ. Deregulation Policy in U. S. A. Ⅳ. The Counterplan of Other Nations Deregulation and Liberalization Ⅴ. The Circumstance Transformation in the Intemational Air Transport Industry Ⅵ. Conclusion

전주시 주민자치협의회 5월 월례회의

정기호,김수연,전상직,임현기,이홍직,최명권,박경희,이염재,곽민종,김용식,최병학,최승해,김나희,김안국,김종순 한국자치학회 2020 월간 주민자치 Vol.104 No.-

폐암 환자의 혈청 Angiotensin Converting Enzyme 활성도의 변화

정기호,최형석,유철규,이계영,김영환,한성구,심영수,김건열,한용철,Jeong, Ki-Ho,Choi, Hyung-Seok,Yoo, Chul-Gyu,Lee, Kye-Young,Kim, Young-Whan,Han, Sung-Koo,Shim, Young-Soo,Kim, Keun-Youl,Han, Yong-Chol 대한결핵및호흡기학회 1992 Tuberculosis and Respiratory Diseases Vol.39 No.4

연구배경 : Angiotensin-converting enzyme (ACE)은 인체의 여러 조직 또는 혈청내에 존재하는 glycoprotein peptidyldipeptide hydrolase로써 여러 종류의 peptides에서 dipeptides를 떼어내는 역할을 담당한다. 이러한 ACE는 주로는 혈관 내피 세포에서 형성되며 인체에서는 폐에 가장 많은 모세혈관들이 존재하므로 ACE가 혈중에 존재하는 기질과 작용하는 곳 또한 폐의 모세 혈관내이다. 임상적으로 ACE는 유육종증의 진단 및 경과 관찰에 이용되며 기타 급성 또는 만성 폐질환에서 혈청 ACE 활성도가 감소된다는 사실이 보고되고 있다. 그러나 한 시점에서의 혈청 ACE 활성도는 폐손상의 유무 및 그 정도를 잘 반영한다고 볼 수는 없으나 시간 간격을 두고 차례대로 측정한 값은 예후와 관련이 있다고 알려져 있다. 이에 저자는 폐암환자를 대상으로 혈청내의 ACE 활성도를 측정하여 이들 환자에 있어서 향후 예후 예측의 지표로써의 가능성을 알아보고자 하였다. 방법 : 연구대상은 새로 진단된 폐암 환자로 하였고 대조군으로는 연구 대상군과 비슷한 연령군으로 하되 두군 모두에서 고혈압, 심장질환, 간질환, 신장 질환 그리고 폐암 이외의 기타 폐질환이 있는 사람은 제외시켰다. 연구대상군은 편평상피세포 폐암환자 19명, 선암폐암환자 13명, 소세포 폐암환자 9명 이었다. 결과 : 1) 편평상피세포 폐암환자의 혈청내 ACE 활성도는 $36.2{\pm}14.2$ U/L 이었고 선암 폐암환자는 $46.0{\pm}18.7$ U/L, 소세포 폐암환자는 $45.7{\pm}14.1$ U/L, 대조군은 $41.4{\pm}18.7$ U/L로 폐암환자의 ACE 활성도는 대조군과 차이가 없었으며 폐암의 세포형에 따라서도 차이가 없었고 폐암의 병기에 따라서도 ACE 활성도는 차이가 없었다. 2) 편평상피세포 폐암환자 4명과 선암 폐암환자 4명은 폐암의 치료로써 폐절제술을 받았으며 수술 전후 ACE 활성도는 편평세포 폐암환자가 수술전 $35.8{\pm}13.9$ U/L, 수술후 $12.5{\pm}3.9$ U/L로 의미있게 감소하였으며 선암 폐암환자에서는 각각 $47.1{\pm}5.9$ U/L, $15.0{\pm}3.9$ U/L로 수술후 의미있게 감소하였다. 3) 편평상피 세포 폐암환자중 3명과 선암 폐암환자 4명에 대하여 항암제를 투여받은 3개월에 걸쳐 측정한 ACE 활성도는 유의한 변화가 없었으며 임상적으로도 폐암의 호전은 없었다. 4) 소세포 폐암환자 9명은 3개월동안의 항암제 투여 중 임상적으로는 호전이 있었으나 혈청내 ACE 활성도는 의미있는 변화가 없었다. 결론 : 이상에서 폐정제술후 혈청내 ACE 활성도는 감소됨을 알 수 있었으나 폐암의 세포형, 병기, 임상적 호전과 혈청내 ACE 활성도는 연관이 없어 혈청 ACE 활성도는 폐암환자의 질병 경과 판정의 지표로써 부적합함을 알 수 있었다. Background: Angiotensin converting enzyme is a glycoprotein peptidyldipeptide hydrolase which cleaves the c-terminal dipeptides of several oligopeptides. It is a menbrane-bound protein mainly synthesized by the endothelial cells. Since the lung has the largest capillary bed of any organ in the body, it is here that ACE acts on circulating substrates like angiotensin I and bradykinin. It is well known that ACE correlates with disease activity in sarcoidosis and also there are reports that changes in serum ACE activity are found in many acute and chronic lung diseases. So we planned this study to see if serum ACE activity can act as a prognostic factor in lung cancer. Methods: Forty-one newly diagnosed lung cancer patients were included in the study group. There were 19 patients with squamous cell lung cancer, 13 with adenocarcinoma, and 9 with small cell carcinoma. Patients were excluded from the study if they had high blood pressure, heart disease, liver disease, renal disease, or other lung disease. Serum ACE activity was analyzed according to cell type, staging, mode of treatment, and clinical response to treatment. Results: 1) There was no difference in serum ACE activity between lung cancer patients and the control group. Also no difference in serum ACE activity was found according to cancer cell type or staging. 2) In patients who underwent curative resection of lung cancer, serum ACE activity was decreased significantly after the operation. 3) In patients who were diagnosed as non-small cell lung cancer and were treated with 4 cycles of anti-cancer chemotherapy without clinical improvement, changes in serum ACE activity were not seen after the treatment. 4) In patients diagnosed as small cell lung cancer treated with 4 cycles of anti-cancer chemotherapy with clinical improvement, changes in serum ACE activity were also not observed. Conclusion: Serum ACE activity was decreased after lung resection but had no relation to cell type, staging, or clinical response to treatment in lung cancer patients. Therefore, serum ACE activity is not suitable in predicting clinical outcome of lung cancer patients.

광섬유 소재의 개발 및 현황

정기호 한국화학공학회 1984 NICE Vol.2 No.3

To achieve the potential for extremely low loss in optical fibers, it is necessary to use alternative materials to those based on silica such as IR transmitting materials. Essentials for the choice of materials are wide transmission range and ultimate loss, together with the need for satisfactory mechanical and chemical properties. There are several types of materials which have been investigated for mid-IR fibers: crystalline and vitreous. Crystalline materials are of great interest because of their potentially wide transmission range and low intrinsic loss. However, their poor mechanical strength and chemical instability bear serious problems for long fiber fabrication. Recently developed heavy metal fluoride glasses exhibit considerable promise as high transparency materials from the UV to the IR(0.2-9㎛), and may offer the best prospects for high performance mid-IR fibers. A critical comparison of the advantages as well as the problems associated with various prospective materials is given.

허브 터미널 운영 효율화를 위한 입출고 트럭 복수 할당 모형

정기호,고창성 한국SCM학회 2022 한국SCM학회지 Vol.22 No.2

In the case of new hub terminal construction or joint use of hub terminals through partnerships between courier companies for terminal capacity expansion, the hub terminal is physically composed of several terminals. In this situation, incoming trucks departing from sub-terminals arrive at the hub terminal, the parcels are unloaded, classified by destination within the hub terminal, moved to the departure dock, and loaded outgoing trucks, and finally outgoing trucks go to the destination sub-terminal. However, there is a mixture of volumes with different destinations in the incoming truck, and in each hub terminal an exit dock is classified for each destination. If the parcel is unloaded at a hub terminal and there is no remaining space in exit dock corresponding to the destination in that terminal, the parcel has to move to another hub terminal with destination departure dock. The movement of parcels between hub terminals is much more expensive than the movement of parcels for sorting within the terminals and increases the work time and work load in the process of repeating loading and unloading operations. So It is very important to minimize the movement of parcels between hub terminals. In a situation where the capacity and time that can be handled per day is limited at the hub terminal, minimizing the truck's travel distance between hub terminals to reduce costs and time as much as possible plays a critical role in improving terminal operation efficiency. In this study, we present a mathematical model for the problem of determining which hub terminal to assign incoming trucks arriving from each sub-terminal and from which hub terminal to get to the destination sub-terminal, develop a solution method, and derive an optimal solution using numerical examples.

적층 투명장갑의 제조 및 방탄성능에 관한 연구

정기호,김희재 陸軍士官學校 1992 한국군사학논집 Vol.43 No.-

고려속요(高麗俗謠)의 형태론적(形態論的) 연구(硏究)

정기호 동악어문학회 1978 동악어문학 Vol.11 No.-

세정/에칭 uniformity 향상을 위한 노즐 array 설계기술에 대한 연구

정기호 한국표면공학회 2011 한국표면공학회 학술발표회 초록집 Vol.2011 No.11