Projections of summertime ozone concentration over East Asia under multiple IPCC SRES emission scenarios

Lee, Jae-Bum,Cha, Jun-Seok,Hong, Sung-Chul,Choi, Jin-Young,Myoung, Ji-Su,Park, Rokjin J.,Woo, Jung-Hun,Ho, Changhoi,Han, Jin-Seok,Song, Chang-Keun Elsevier 2015 Atmospheric environment Vol.106 No.-

<P><B>Abstract</B></P> <P>We have developed the Integrated Climate and Air Quality Modeling System (ICAMS) through the one-way nesting of global–regional models to examine the changes in the surface ozone concentrations over East Asia under future climate scenarios. Model simulations have been conducted for the present period of 1996–2005 to evaluate the performance of ICAMS. The simulated surface ozone concentrations reproduced the observed monthly mean concentrations at sites in East Asia with high R<SUP>2</SUP> values (0.4–0.9), indicating a successful simulation to capture both spatial and temporal variability. We then performed several model simulations with the six IPCC SRES scenarios (A2, A1B, A1FI, A1T, B1, and B2) for the next three periods, 2016–2025 (the 2020s), 2046–2055 (the 2050s), and 2091–2100 (the 2090s). The model results show that the projected changes of the annual daily mean maximum eight-hour (DM8H) surface ozone concentrations in summertime for East Asia are in the range of 2–8 ppb, −3 to 8 ppb, and −7 to 9 ppb for the 2020s, the 2050s, and the 2090s, respectively, and are primarily determined based on the emission changes of NO<SUB>x</SUB> and NMVOC. The maximum increases in the annual DM8H surface ozone and high-ozone events occur in the 2020s for all scenarios except for A2, implying that the air quality over East Asia is likely to get worse in the near future period (the 2020s) than in the far future periods (the 2050s and the 2090s). The changes in the future environment based on IPCC SRES scenarios would also influence the change in the occurrences of high-concentrations events more greatly than that of the annual DM8H surface ozone concentrations. Sensitivity simulations show that the emissions increase is the key factor in determining future regional surface ozone concentrations in the case of a developing country, China, whereas a developed country, Japan would be influenced more greatly by effects of the regional climate change than the increase in emissions.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Change in ozone level is determined by the combination of NO<SUB>x</SUB> and NMVOC emissions. </LI> <LI> Ozone level over East Asia would get worse in the near future (the 2020s) than far future. </LI> <LI> A high-concentration event generally increases and more frequently occurs in the future. </LI> <LI> Change in ozone air quality in a developing country depends more on emissions change. </LI> <LI> Change in ozone air quality in a developed country depends more on climate change. </LI> </UL> </P>

정체경락(整體經絡)마사지가 슬내,외반 하지 변형의 교정에 미치는 영향

김송자 ( Song Ja Kim ),김우원 ( Woo Won Kim ),장완성 ( Wan Song Chang ) 한국정체경락학회(구 정체경락연구학회) 2009 한국정체경락학회지 Vol.1 No.1

본 연구는 정체경락마사지와 운동요법이 슬내반과 슬외반 하지변형의 교정에 미치는 영향을 알아보고자 하였다. 특이한 지병이 없이 후천적인 하지 변형이 있는 22세-59세까지의 여성 45명을 대상으로 슬내반집단, 슬외반집단 그리고 대조집단으로 나누어 정체경락마사지와 운동요법을 8주간 주 3회씩 총 24회를 실시하였다. 각 집단의 Q각과 고관절각, 대퇴경골각의 변화를 분석하기 위하여 평균과 표준편차를 구하였으며, 처치에 따른 평균차이를 알아보기 위하여 Two-way repeated measured ANOVA, paired t-test를 실시하였다. 그 결과 슬내·외반 집단의 하지변형에 정체경락마사지 적용 전·후의 Q각에서는 우측 모두 유의한 차가 나타나지 않았으며, 좌측에서는 측정시기에서만 유의한 차(p<.05)가 나타났다. 슬내·외반 집단의 하지변형에 정체경락마사지 적용 전·후의 고관절각에서는 좌·우측에서 집단간의 유의한 차(p<.05, p<.01)이가 나타났으며, 우측에서는 상호작용효과에서도 유의한 차(p<.01)가 나타났다. 슬내·외반 집단의 하지변형에 정체경락마사지로 관리 전·후의 대퇴·경골각의 변화에서는 좌·우에서 집단 간, 측정시기, 상호작용에서 각각 통계적으로 유의한 차(p<.05), (p<.01, p<.001)가 나타났다. 무릎간의 간격과 발목간의 간격에서도 통계적으로 유의한 차(p<.001)가 나타났다. 결론적으로 정체경락마사지는 하지변형 변인, 그리고 고관절 주변 골반의 변형에 영향을 미침으로 슬내·외반 하지변의 교정에 효과가 있는 것으로 판단된다. In this study, Jung-che massage on meridian pathways and exercise therapy, Genu varus group and Genu valgus group do not want to sort out the impact was. Subjects without the disease between 20-50 women 45 men Genu varus group, Genu valgus group, and Control group was divided into the experiment. Experiments A and B, 3 times a week, 8 weeks 24 anniversary was applied. Research subjects to analyze changes in the dependent variable, mean and standard deviation were saving. Learn the difference between the treatment based on the average to Two-way ANOVA, paired t-test was conducted. As a result, There was significant difference (p<.05, p<.01) between groups at the right and left side in coxa angle before and after treatment by Jung-che massage on meridian pathways in the change of low limb of genu varus & valgus group, and also significant difference was seen in the interactive effect at the right side. For the change of low limb in genu varus & valgus group, there was significant difference (p<.05), (p<.01, p<.001) between groups at the right and left sides, measuring periods, interactions, in terms of statistics respectively as the result of looking into changes on thigh tibia angle before and after the treatment by Jung-che massage on meridian pathways. The gap between knees, which becomes the standard of judging its shape for the change on low limb of the genu varus & valgus and means genu varus, showed significant difference (p<.001) in terms of statistics. The gap between ankles, which shows genu valgus and the standard of judging low limb change of genu varus & valgus group in shape, showed significant difference (p<001) in terms of statistics. In conclusion, Jung-che massage on meridian pathway is applied to look like their give change.

Which Environmental Factors Caused Lammas Shoot Growth of Korean Red Pine?

Lee, Chang-Seok,Song, Hye-Gyung,Kim, Hye-Soo,Lee, Bit-Na-Ra,Pi, Jeong-Hoon,Cho, Yong-Chan,Seol, Eun-Sil,Oh, Woo-Seok,Park, Sung-Ae,Lee, Seon-Mi The Ecological Society of Korea 2007 Journal of Ecology and Environment Vol.30 No.1

Lammas growth, a rare phenomenon for Korean red pine (Pinus densiflora), occurred in 2006. Lammas shoots showed higher frequency and longer length in Seoul's hotter urban center than in urban boundary or suburban forest sites. Frequency and length showed a close correlation with urbanization density and vegetation cover expressed in NDVI. Air temperature in the late summer of 2006 was more than $1^{\circ}C$ higher than an average year. Of the predominant environmental signals that modulate bud flush, only temperature changed significantly during the year. Differences in temperature between the urban centers, urban boundaries and suburban forests correlated with varying land-use density. The rise in temperature likely spurred lammas growth of the Korean red pine. Symptoms of climate change are being detected throughout the world, and its consequences will be clearer in the future. Considerate interest in the responses of ecological systems to the variable changes is required to prepare for unforeseeable crises. Monitoring of diverse ecological phenomena at Long Term Ecological Research sites could offer harbingers of change.

Characterization of cricket song patterns and the behavior observation of Teleogryllus emma (Orthoptera:Grylloidea)

Ji Chang Woo,Kim Nam-Jung,Lee Sang-Guei,Hwang-Yong Kim,Choi Hoon-Sik,Song In-Sun,Ko Jee Sun 한국응용곤충학회 2010 한국응용곤충학회 학술대회논문집 Vol.2010 No.05

We analyzed the chirp sound and behavior of Teleogryllus emma with observation system, which was consisted of computer, ccd-camera and microphone. Computational methods of wavelet transformation and Self-Organizing Maps (SOM) were utilized to characterized the chirp sound of insect species for automatic counting in this study. Wavelets were initially applied to feature extraction of the chirp sound. Wavelet coefficients were accordingly calculated based on the basis function (e.g., Morlet). The obtained coefficients were subsequently provided to count number of chirps in each song. Sound structure of insect specimens consisted with long chirp and short chirp and the patterns of song were grouped by frequency of long chirp and short chirp. The song patterns of insect specimens were divided by Self-Organizing Map (SOM) that was used number of chirp as input data. Application of computational methods to automatic detection of chirp sound was further discussed for obtaining objective assessment in behavior science.

Evaluation of a Dual-Cooled Annular Fuel Heat Split and Temperature Distribution

YANG, Yong Sik,SHIN, Chang Hwan,CHUN, Tae Hyun,SONG, Kun Woo Atomic Energy Society of Japan 2009 Journal of nuclear science and technology Vol.46 No.8

<P>The heat flux and fuel temperature of an annular fuel rod was analyzed using a newly developed program, DUO_THERM. The dual-cooled annular fuel rod has both inner and outer coolant channels. The heat fluxes to inner and outer claddings can change during irradiation because of the variation in the gap conductances of the inner and outer sides. The heat flux is a very important design factor affecting fuel integrity and safety. However, in an annular fuel design, the prediction of heat flux is very complicated because it is closely connected with size changes of two gaps, which are different from each other during irradiation. A burnup increase and power change can cause pellet and cladding radial deformation and eventually change the gap width. Because an annular fuel has two gaps at both sides and their heat resistances are very large, an imbalance of the gap width can lead to heat flux asymmetry. Therefore, a pellet and cladding dimensional change including densification, swelling, creep, and thermal expansion must be considered in the calculation of heat flux and temperature. By using the DUO_THERM program, the changes in heat flux and temperature during an operation were evaluated with respect to a reference design of an annular fuel. The results of the evaluation showed that the heat flux of an annular fuel was greatly affected by the inner and outer gap conductance changes. The heat flux of the inner cladding was maximum at zero burnup, but that of the outer cladding was maximum at the burnup of the outer gap closing. In addition, the maximum fuel temperature location was changed by gap conductance asymmetry.</P>

Diagnostic Significance of Brainstem Auditory Evoked Potentials in Microvascular Decompression of Patients with Hemifacial Spasm or Trigeminal Neuralgia

( Sang-koo Park ),( Sung-hyuk Lim ),( Chan-woo Park ),( Jin-woo Park ),( Sung-ho Chang ),( Keun-hye Park ),( Hae-ja Park ),( Ji-hye Song ),( Dong-ok Uhm ),( Ki-bong Kim ) 대한임상검사과학회 2011 대한임상검사과학회지(KJCLS) Vol.43 No.1

The purpose of this study was to analyse brainstem auditory evoked potentials (BAEP) wave change data during microvascular decompression (MVD). The nerve function of Cranial Nerve VIII is at risk during MVD. Intraoperative monitoring of BAEP can be a useful tool to decrease the danger of hearing loss. Between January and December 2009, 242 patients had MVD for hemifacial spasm (HFS) and trigeminal neuralgia (TN). Among intraoperative BAEP changes, amplitude of V-V’ was the most frequently observed during cerebellar retraction and decompression step of the MVD procedure. 138 patients (57%) had no BAEP change while 104 patients (42.98%) had BAEP change. 69 patients (28.5%) had Type A-I, 16 patients (6.6%) had Type A-II, 5 patients (2.1%) had Type B, and 13 patients (5.37%) had Type C. MVD is a surgical procedure to relieve the symptoms (e.g. pain, muscle twitching) caused by compression of a nerve by an artery or vein. During BAEP intraoperative monitoring, the surgical step is important in interpreting the changes of wave V. Several potential mechanisms of injury may affect the cochlear nerve, and complete loss of BAEP is often associated with postoperative hearing loss. Intraoperative BAEP monitoring may provide an early warning of hearing disturbance after MVD.

Diagnostic Significance of Brainstem Auditory Evoked Potentials in Microvascular Decompression of Patients with Hemifacial Spasm or Trigeminal Neuralgia

Park, Sang-Koo,Lim, Sung-Hyuk,Park, Chan-Woo,Park, Jin-Woo,Chang, Sung-Ho,Park, Keun-Hye,Park, Hae-Ja,Song, Ji-Hye,Uhm, Dong-Ok,Kim, Ki-Bong 대한임상검사과학회 2011 대한임상검사과학회지(KJCLS) Vol.43 No.1

The purpose of this study was to analyse brainstem auditory evoked potentials (BAEP) wave change data during microvascular decompression (MVD). The nerve function of Cranial Nerve VIII is at risk during MVD. Intraoperative monitoring of BAEP can be a useful tool to decrease the danger of hearing loss. Between January and December 2009, 242 patients had MVD for hemifacial spasm (HFS) and trigeminal neuralgia (TN). Among intraoperative BAEP changes, amplitude of V-V' was the most frequently observed during cerebellar retraction and decompression step of the MVD procedure. 138 patients (57%) had no BAEP change while 104 patients (42.98%) had BAEP change. 69 patients (28.5%) had Type A-I, 16 patients (6.6%) had Type A-II, 5 patients (2.1%) had Type B, and 13 patients (5.37%) had Type C. MVD is a surgical procedure to relieve the symptoms (e.g. pain, muscle twitching) caused by compression of a nerve by an artery or vein. During BAEP intraoperative monitoring, the surgical step is important in interpreting the changes of wave V. Several potential mechanisms of injury may affect the cochlear nerve, and complete loss of BAEP is often associated with postoperative hearing loss. Intraoperative BAEP monitoring may provide an early warning of hearing disturbance after MVD.

혐기화 시간에 따른 활성슬러지의 물리·화학적 특성변화

이창한,나영수,김도한,이송우,송승구 한국환경과학회 2002 한국환경과학회지 Vol.11 No.4

Physico-chemical properties of the activated sludges(Suyoung and Changlim treatment plant). such as SVI(sludge volume index), absorbance, specific surface area, and specific resistance using Buchener funnel test were investigated with changing anaerobic storage time. This experimental condition was found that it was possible to estimate a linear relationship between their parameters such as specific area, specific resistance, and sludge volume index(SVI). The specific surface area and the specific resistance to filtration of the activated sludges of Suyoung and Changlim treatment plant were found as 123.6~136.6㎡/gDS and 41.5 ~ 44.9㎡/gDS(dry solid), and 1.09×10^14 ~ 5.48×10^14m/㎏, respectively. The results gave a good linear relationship between the specific surface area and the specific resistance. r=2.25×10^12s-8.10×10^13(R^2=0.8885) at Suyoung treatment plant and r=1.26×10^13s-4.75×10^14(R^2=0.8756) at Canglim treatment plact.

Poster Session : PS 1239 ; Pulmonology : Azathioprine Induced Cholestatic Hepatitis in Patient with Boop

( Hyung Woo Kim ),( Joo Han Song ),( Kyung Soo Chung ),( Song Yee Kim ),( Eun Young Kim ),( Ji Ye Jung ),( Young Ae Kang ),( Young Sam Kim ),( Se Kyu Kim ),( Joon Chang ),( Moo Suk Park ) 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1

Azathioprine is widely used as an immunosuppressive drug in infiammatory bowel disease, many autoimmune disease and after organ transplantation to avoid rejection. Azathioprine has adverse reactions like hepatotoxicity. We report a case of azathioprine induced cholestatic hepatitis in patient with bronchiolitis obliterans organizing pneumonia(BOOP). A-37-year old woman was admitted because of pruritus and jaundice. She took transbronchial lung biopsy, bronchoalveolar lavage for cough, dyspnea and GGO patterns on chest computed tomography(CT) scan before she admitted. And it was revealed that she had BOOP. So she had been followed and treated for BOOP with prednisolone from 23th Nov 2012 and azathioprine from 8th Jan 2013. 42 days after taking Azathioprine, routine blood test was taken. Serum bilirubin, alkaline phosphatase(ALP), aspartate transaminase(AST), and alanine aminotransferase(ALT) was elevated(Bilirubin 4.4mg/dL, AST 75IU/L, ALT 104IU/L) and. Other laboratory test, including prothrombin time, serum albumin, and serum protein were within normal range. There was no history of alcohol abuse or herbal medication intake at this period. To exclude other reasons for hepatotoxicity, serological test was performed. The patient tested to negative for Hepatitis A, B, and C as well as for other markers of autoimmune hepatitis. CT scan showed hepatomegaly with lymph node enlargement and there was no evidence of bile duct obstruction. And TPMT(thiopurine methyltransferase) genotyping was done and revealed to be wild type. Azathioprine was stopped and she was monitored for laboratory changes. Because it was regarded as azathioprine induced cholestatic hepatitis and jaundice, we considered not to do liver biopsy. Day 55 after starting azathioprine therapy, total bilirubin reached peak (12.3mg/ dL). The patient was discharged on day 63 with cholestatic parameters of 115U/L(ALP), 36U/L(γ-GT), and 11.5mg/dL(total bilirubin). After 2 months, total bilirubin was decreased to normal(0.8mg/dL). Treatment of BOOP has been continued only with oral steroid.

기후변화 시나리오에 따른 지역별 확률강우량

김영호,여창건,서근순,송재우,Kim. Young-Ho,Yeo. Chang-Geon,Seo. Geun-Soon,Song. Jai-Woo 한국방재학회 2011 한국방재학회논문집 Vol.11 No.3

본 연구는 A1B 기후변화 시나리오를 고려하여 지역별 확률강우량을 산정하고 관측소별 기존 관측자료의 특성을 고려한 적정 방법을 제안하였다. 이를 위하여 우리나라 주요 지점 강우관측소를 연구 대상지점으로 선정하여 선정된 주요 지점 관측소에 대해 24시간 연최대강우량 평균값과 매개변수의 관계를 분석하여 2100년의 빈도별 확률강우량을 산정하였다. 2100년 빈도별 확률강우량은 기상청 실측강우량 자료를 활용하여 산정하는 방법, 확률분포의 매개변수는 실측 강우자료를 활용하고, 2100년까지의 강우자료는 A1B 시나리오를 활용하는 방법, A1B 시나리오를 활용하여 확률강우량을 산정하는 3가지 방법을 적용하였다. A1B 시나리오에 의한 강우 예측값은 실측값 보다 과소 추정되어 이를 활용하는 경우에는 보정이 필요하며, 분위 사상법을 적용하여 보정한 결과 모든 관측소에서 약 2.3~3.0배의 강우량이 평균적으로 상향조정 되었다. 실측강우 자료만으로 산정한 확률 강우량의 경우, 강우량이 지속적으로 증가하여 과대 산정되어 증가하는 경향이 강하며, A1B 시나리오 자료를 활용하여 산정한 확률강우량의 경우 대체적으로 기존 관측자료의 증감율과 유사하게 산정되기는 하지만 지역적 특성을 정확히 반영하지 못하는 경우가 다소 발생하였다. 각 지점별로 24시간 연 최대 강우량 평균 증가율과 방법별로 산정된 확률강우량의 증가율을 비교하여 기후변화를 고려한 관측지점별 확률강우량 산정 방법을 선정하였다. This research proposes the suitable method for estimating the future probable rainfall based in 2100 on the observed rainfall data from main climate observation stations in Korea and the rainfall data from the A1B climate change scenario in the Korea Meteorological Administration. For all those, the frequency probable rainfall in 2100 was estimated by the relationship between average values of 24-hours annual maximum rainfalls and related parameters. Three methods to estimate it were introduced; First one is the regressive analysis method by parameters of probable distribution estimated by observed rainfall data. In the second method, parameters of probable distribution were estimated with the observed rainfall data. Also the rainfall data till 2100 were estimated by the A1B scenario of the Korea Meteorological Administration. Last method was that parameters of probable distribution and probable rainfall were estimated by the A1B scenario of the Korea Meteorological Administration. The estimated probable rainfall by the A1B scenario was smaller than the observed rainfall data, so it is required that the estimated probable rainfall was calibrated by the quantile mapping method. After that calibration, estimated probable rainfall data was averagely became approximate 2.3 to 3.0 times. When future probable rainfall was the estimated by only observed rainfall, estimated probable rainfall was overestimated. When future probable rainfall was estimated by the A1B scenario, although it was estimated by similar pattern with observed rainfall data, it frequently does not consider the regional characteristics. Comparing with average increased rate of 24-hours annual maximum rainfall and increased rate of probable rainfall estimated by three methods, optimal method of estimated future probable rainfall would be selected for considering climate change.