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| 1 | Changes in annual CO_2 fluxes estimated from inventory data in South Korea显示文摘Using a slightly modified IPCC method, we examined changes in annual fluxes of CO2 and contributions of energy consumption, limestone use, waste combustion, land-use change, and forest growth to the fluxes in South Korea from 1990to 1997. Our method required less data and resulted in a larger estimate of CO2released by industrial processes, comparing with the original IPCC guideline. However, net CO2 emission is not substantially different from the estimates of IPCC and modified methods. Net CO2 emission is intimately related to GDP as Koreaneconomy has heavily relied on energy consumption and industrial activities, which are major sources of CO2. Total efflux of CO2 was estimated to be 63.6 Tg C/ain 1990 and amounted to 112.9 Tg C/a in 1997. Land-use change contributed to annual budget of CO2 in a relatively small portion. Carbon dioxide was sequesteredby forest biomass at the rate of 6.5 Tg C/a in 1990 and 8.5 Tg C/a in 1997. Although CO2 storage in the forests increased, the sink effect was overwhelmed by extensive energy consumption, suggesting that energy-saving strategies will be more effective in reducing CO2 emission in Korea than any other practices. It is presumed that plant uptake of CO2 is underestimated as carbon contained in plant detritus and belowground living biomass were not fully considered. Furthermore, the soil organic carbon stored in forest decomposes in various ways in rugged mountains depending on their conditions, such as slope, aspect and elevation, which could have an effect on decomposition rate and carbon stores in soils. Thus, carbon sequestration of forests deserves further attention. | Lee Dowon Yook Keun Hyung Lee Dongseon Kang Sinkyu Kang Hojeong Lim Jong Hwan Lee Kyeong Hak | 2002 | Science China(Life Sciences)2002，45，z1： | 3 |
| 2 | Signcryption with fast online signing and short signcryptext for secure and private mobile communication显示文摘Signcryption scheme is one of the useful tools for secure communication where authenticity and confidentiality are simultaneously required.Now,mobile devices are more and more widely used for communication,and thus it is desirable to design a scheme suitable to mobile applications.In this paper,we propose a signcryption scheme which is efficient enough to be implemented on mobile devices.In our scheme,we need only one multiplication in an online phase,and thus a signcryptor can generate a signcryptext very efficiently in the online phase.Moreover,the size of signcryptext is very short compared with exsiting schemes,and thus our scheme is very efficient in terms of communication overhead.The security of our signcryption scheme is proven in the random oracle model. | YOUN Taek-Young HONG Dowon | 2012 | Science China(Information Sciences)2012，55，11： | 2 |
| 3 | Comparison of Eco-lndustrial Development between the UK and Korea显示文摘 | DOWON K JANE C | 2008 | Springer Proceedings in Physics2008，124，： | 1 |
| 4 | Enzyme activities in constructed wetlands: Implication for water quality amelioration显示文摘 | Hojeong Kang Chris Freeman Dowon Lee William J. Mitsch | 1998 | Hydrobiologia (-)1998，，1： | 1 |
| 5 | Variations of soil enzyme activities in a temperate forest soil 显示文摘 | Hojeong Kang Sinkyu Kang Dowon Lee | 2009 | Ecol Res2009，24，： | 1 |
| 6 | Laboratory experiments and demonstrations in tribology-externally pressurized air lubricated thrust bearings 显示文摘 | DOWON D | 1969 | Tribology1969，2，24： | 1 |
| 7 | Oxygen insufflation via working channel in a fiberscope is a useful method: A case report and review of literature显示文摘BACKGROUND Fiberoptic bronchoscopic intubation is the gold standard for endotracheal intubation in difficult or compromised airway situations. However, oxygen insufflation through the working channel of a fiberscope is a controversial method because of the possibility of gastric distention and rupture during an awake fiberoptic bronchoscopic intubation, despite the advantages of preventing fogging of the fiberoptic bronchoscopic lens, blowing oral secretions away, and oxygenation of patients.CASE SUMMARY Here, we describe a case of cervical instability where we rapidly performed fiberoptic bronchoscopic intubation using oxygen insufflation through working channel of the broncoscopy to administer general anesthesia after two previous failures due to low visibility. A 50-year-old man with a non-specific medical history underwent emergency cervical spine surgery for posterior fusion of the C2 and C3 vertebrae. After two unsuccessful attempts at intubation using the fiberoptic broncoscopy, we performed it successfully using the oxygen insufflation via the working channel, instead of using suction to remove the secretion from the lens.CONCLUSION Oxygen insufflation via the working channel of thebroncoscopy is a useful method for assisting with difficult intubation cases. | Dowon Lee Jiseok Baik Giyoung Yun Eunsoo Kim | 2018 | World Journal of Clinical Cases2018，6，16： | 1 |
| 8 | Enzyme activities in constructed wetlands: Implication for water quality amelioration显示文摘 | Hojeong Kang Chris Freeman Dowon Lee William J. Mitsch | 1998 | Hydrobiologia (-)1998，，1： | 1 |
| 9 | Constructing PEKS schemes secure against keyword guessing attacks is possible?显示文摘 | Ik Rae Jeong Jeong Ok Kwon Dowon Hong Dong Hoon Lee | 2008 | Computer Communications2008，，： | 1 |
| 10 | Effects of ammonium and nitrate additions on carbon mineralization in wetland soils 显示文摘 | Kyungjin M Hojeong K Dowon L | 2011 | Soil Biology and Biochemistry2011，12，43： | 1 |
| 11 | Enzyme activities in constructed wetlands: Implication for water quality amelioration显示文摘 | Hojeong Kang Chris Freeman Dowon Lee William J. Mitsch | 1998 | Hydrobiologia (-)1998，，1： | 1 |
| 12 | A study of wave propagation on a cylindrical shell using fiber optic laser dopplervelocimetry 显示文摘 | Dowon Lee | 1993 | JASA1993，94，1： | 1 |
| 13 | Ecotope mapping for landscape ecological assessment of habitat and ecosystem显示文摘 | Sun-Kee HONG Sungwoo KIM Ki-Hwan CHO Jae-Eun KIM Sinkyu KANG Dowon LEE | 2004 | Ecological Research2004，，1： | 1 |
| 14 | Security problem on arbitrated quantum signature schemes 显示文摘 | Choi Jeong Woon Chang Ku-Young Hong Dowon | 2011 | Physics Review A2011，84，6： | 1 |
| 15 | The influence of wind flows on thermal comfort in the Daechung of a traditional Ko- rean house 显示文摘 | YOUNGRYEL R SEOGCHEOL K DOWON L | 2009 | Building and Environment2009，44，1： | 1 |
| 16 | Enzyme activities in constructed wetlands: Implication for water quality amelioration显示文摘 | Hojeong Kang Chris Freeman Dowon Lee William J. Mitsch | 1998 | Hydrobiologia (-)1998，，1： | 1 |
| 17 | Paradoxical carbon dioxide embolism during laparoscopic hepatectomy without intracardiac shunt:A case report显示文摘BACKGROUND Laparoscopic hepatectomy has recently become popular because it results in less bleeding than open hepatectomy.However,CO_(2)embolism occurs more frequently.Most CO_(2)embolisms during laparoscopic surgery are self-resolving and non-symptomatic;however,severe CO_(2)embolism may cause hypotension,cyanosis,arrhythmia,and cardiovascular collapse.In particular,paradoxical CO_(2)embolisms are highly likely to cause neurological deficits.We report a case of paradoxical CO_(2)embolism found on transesophageal echocardiography(TEE)during laparoscopic hepatectomy,although the patient had no intracardiac shunt.CASE SUMMARY A 71-year-old man was admitted for laparoscopic left hemihepatectomy.During left hepatic vein ligation,the inferior vena cava was accidentally torn.We observed a sudden drop in oxygen saturation to 85%,decrease in systolic blood pressure(SBP)below 90 mm Hg,and reduction in end-tidal CO_(2)to 24 mm Hg.A“mill-wheel”murmur was auscultated over the precordium.The fraction of inspired oxygen was increased to 100%with 5 cm H2O of positive end-expiratory pressure(PEEP)and hyperventilation was maintained.Norepinephrine infusion was increased to maintain SBP above 90 mm Hg.A TEE probe was inserted,revealing gas bubbles in the right side of the heart,left atrium,left ventricle,and ascending aorta.The surgeon reduced the pneumoperitoneum pressure from 17 to 14 mm Hg and repaired the damaged vessel laparoscopically.Thereafter,the patient’s hemodynamic status stabilized.The patient was transferred to the intensive care unit,recovering well without complications.CONCLUSION TEE monitoring is important to quickly determine the presence and extent of embolism in patients undergoing laparoscopic hepatectomy. | Soeun Jeon Jeong-Min Hong Hyeon Jeong Lee Yesul Kim Hyunjong Kang Boo-young Hwang Dowon Lee Young-hoon Jung | 2022 | World Journal of Clinical Cases2022，10，9： | 1 |
| 18 | Study of pyrolysis kinetics of Alberta oil sand by thermogravimetric analysis显示文摘 | Young Cheol Park Jin-Young Paek Dal-Hee Bae Dowon Shun | 2009 | Korean Journal of Chemical Engineering2009，，6： | 1 |
| 19 | Reconstruction of the lower back wound with delayed infection after spinal surgery:A case report显示文摘BACKGROUND Orthopedic surgeries after device implantation are susceptible to infections and may require device removal in the worst cases.For this reason,many efforts are being made to control infections after spinal surgery;however,the number of infec-tion cases is increasing owing to the increasing number of elderly citizens.CASE SUMMARY A 75-year-old male with a chronic spinal defect due to previous spine surgery underwent reconstruction using a perforator-based island flap.After bursectomy and confirmation that there was no connection with the deep tissue,reconstruction was performed.However,wound disruption occurred with abscess formation on postoperative day 29,which led to an imaging workup revealing delayed deep tissue infection.CONCLUSION Infection is one of the most common causes of surgical wound dehiscence and is associated with devastating results if not controlled promptly and definitively.Surgeons should always suspect delayed infections when reconstructing chronic soft tissue defects. | DoWon Kim SooA Lim SuRak Eo Jung Soo Yoon | 2023 | World Journal of Clinical Cases2023，11，27： | 0 |
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