• Title/Summary/Keyword: Masan

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Relationship between Pollution Factors and Environmental Variation in Waters around Masan Bay (마산만 주변 해역에서 오염인자와 해양환경변동과의 관계)

  • Shin, So-Young;Lee, Chung-Il;Hwang, Sun-Chool;Cho, Kyu-Dae
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.10 no.2 s.21
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    • pp.69-79
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    • 2004
  • This study focuses on the relationship between pollution factors around Masan, Changwon and Chinhae city considerd as main pollution sources and marine environment in Masan bay of Korea. Water quality data measured In Jinhae bay and environmental investigation data in Masan, Changwon and Jinhae cities from 1981 to 1998 were used for this study. Annual means and standard deviations of COD, DIN and DIP concentrations from 1981 to 1998 showed that both their concentration and fluctuations were higher in the inner part of Masan bay (region A) than near Somodo (region B). Sediment dredging in Masan bay had been done from 1990 to 1994. After dredging, COD concentration has been decreasing In surface layer. Also water pollution was gradually spreaded from the inner part to the outer part of the bay due to the continuous inflow of domestic sewage and industrial wastewater. In the late of 1990s, the pollution was heavier. DIN and DIP concentrations were found to be increased by establishment of industry complex and decreased by sewage treatment plant near the city adjacent to Jinhae bay, 1993. The correlation between COD, DIN and DIP changes and neighbor cities' pollution sources were calculated From 1981 to 1998, correlation coefficient (r) was over 0.8 except for the bottom of region A From 1981 to 1998, r between the DIP concentration and population was over 0.65 except for the surface of region A, and the r between the DIP and the number of factories was over 0.6 too, in region B.

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Response of Benthic Foraminifera to Sedimentary Pollution in Masan Bay, Korea (마산만 퇴적환경 오염에 따른 저서성 유공충 분포 변화)

  • Woo, Han-Jun;Kim, Hyo-Young;Jeong, Kap-Sik;Chun, Jong-Hwa;Kim, Seong-Eun;Chu, Yong-Shik
    • The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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    • v.4 no.2
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    • pp.144-154
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    • 1999
  • Masan Bay is highly polluted by the discharge of large quantities of effluents from the industrial complex and domestic sewage of Masan City, Southeast Korea. Surface sediments from 9 stations were used for geochemical and foraminiferal analyses in order to investigate foraminiferal response to sedimentary pollution in the Bay. The heavy metal concentrations in sediments are relatively higher than those in Kyeonggi Bay and Daesan area, west coastal region of Korea. Zn, Cd, Pb, and As are more concentrated than in world average shale, indicating that the municipal and industrial effluents cause sediment contamination. Responses of benthic foraminifera to the sedimentary pollution effect document a degree of pollution in Masan Bay. The species number and diversity in Masan Bay had lower values than those in Gadeog Channel. In Masan Bay, agglutinated foraminifera are abundant and calcareous foraminiferal tests were frequently pyritized. Eggerella advena and Trochammina pacifica dominated at levels of pollution and could be opportunistic species. These data will provide a baseline for future assessments of environmental quality in Masan Bay.

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A Case of Anticonvulsant Hypersensitivity Syndrome with Subcarinal Lymph node Enlargement and Eosinophilic Pneumonia Induced by Carbamazepine (Carbamazepine에 의한 기관분기부하 림푸절 종대와 호산구성 폐렴이 동반된 Anticonvulsant Hypersensitivity Syndrome 1예)

  • Jeon, Ik Soo;Jang, Jae Young;Park, Jee Eun;Song, Chun Young;Jung, Chang Wook;Kim, Sung Hun;Kang, Kyung Woo
    • Tuberculosis and Respiratory Diseases
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    • v.57 no.1
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    • pp.55-60
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    • 2004
  • Anticonvulsant hypersensitivity syndrome (AHS) is an uncommon, but potentially fatal and mutilsystemic disorder that occurs after exposure to the arene oxide-producing anticonvulsants-carbamzepine, phenobarbital and phenytoin. The multisystemic reactions include fever, skin eruptions, lymphadenopathy, hematologic abnormality and hepatitis. The diagnosis of AHS is made by history of drug exposure and clinical course. No specific treatments are proved as benefit except discontinuing the offending drug and trying the steroids in some severe cases. We report a case of carbamazepine induced anticonvulsant hypersensitivity syndrome characterized by skin rash, eosinophilia, subcarinal lymphadenopathy and eosinophilic pneumonia. The patient was resolved completely after only discontinuing carbamazepine.

Characteristics of Marine Environment in Coastal Waters for Stationary Fisheries.- Physical and Chemical Environments (정치성구획어업 예정지의 해양학적 환경 특성 -물리.화학적 환경 특성-)

  • Lee Chung-Il;Park Sung-Eun;Lee Jae-Young;Cho Kyu-Dae
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.12 no.3 s.26
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    • pp.171-177
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    • 2006
  • To illustrate the characteristics of marine environment in coastal waters of stationary fisheries, field observations were carried out in August and November, 2001. Water temperatures in Jindong Bay compared with those in Masan Bay were about $2.0^{\circ}C$ higher in August and about $0.7^{\circ}C$ in November. Salinities were lowest in the western part of Jindong Bay. It was found that salinity increased gradually from the western part of Jindong Bay to Masan Bay. Sea water in Masan Bay can be characterised as lower temperature and higher salinity, compared with those in Jindong Bay. Concentrations of suspended solids in the inner parts of Jindong Bay were higher than 15mg/L in August. Suspended solids in both regions of Jindong Bay and Masan Bay showed contrastive distributions, especially in November. That is, higher concentrations of suspended solids were found in the inner parts of Jindong Bay and off Masan Bay. Concentration of chemical oxygen demand in Masan Bay was highest, 7mg/L.

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A Study on the Processes of Small Libraries Changing Sociological Role and Its Direction of Movement in Masan City (마산지역 작은도서관의 사회적 역할 변화과정과 운동의 방향)

  • Yang, Jae-Han
    • Journal of Korean Library and Information Science Society
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    • v.39 no.3
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    • pp.27-52
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    • 2008
  • This paper tries to interpret the processes of small libraries changing sociological role and its direction of movement in Masan City. The roles of small libraries are changing according to the aspects of the communities. Thus the roles of the small libraries in Masan have also changed with the various changes in Korean society. The periods are divided into three : 1980's : the appearances of civil libraries, 1990's : maeul libraries that the citizens have established and participated, 2000's : small libraries that have established from cooperation of government and private. By the three periods this paper interprets the processes of small libraries changing sociological role and its direction of movement in Masan City.

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The Changing pattern of the Plain Abdominal Radiogram by Progression of the Intussusception in Children (소아 장중첩증에서 증상 지속 시간에 따른 단순 복부 사진의 변화)

  • Jun, Hyung-Seok;Choi, Young-Cheol;Choi, Seung-Ho
    • Advances in pediatric surgery
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    • v.15 no.2
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    • pp.132-140
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    • 2009
  • The purpose of this study was to determine the success rate of air reduction as the primary treatment of intussusception and whether the success of air reduction could be predicted by plain x-ray. The authors reviewed the medical records of 54 consecutive patients diagnosed with intussusception from Jan 2005 to Dec 2007 at the Department of Surgery, Masan Samsung Hospital. The natures of symptoms and findings of plain abdominal radiography performed in the emergency department (ED) were reviewed. Air reduction failed more frequently (26.3 %) in patients who visited ED more than 24 hours after symptom onset (p=0.009). The mean duration of symptom for operated patients was longer than air reduction group (p=0.01). Also, 3/4 of patients having localized distension of small bowel in the left upper quadrant abdomen had unsuccessful air reduction (p=0.002). In conclusion, the time interval from symptom onset to arrival at ED and localized distension of small bowel in the left upper quadrant abdomen significantly increased the failure rate of air reduction.

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Pollutant Budget Change Due to Construction of Wastewater Treatment Plant in Masan Bay (하수처리장 건설에 의한 마산만의 오염물질 수지변화)

  • 조홍연;채장원;정신택
    • Journal of Korean Society of Coastal and Ocean Engineers
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    • v.12 no.3
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    • pp.149-155
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    • 2000
  • The effects of the WfP construction are analysed quantitatively based on the pollutant budget change in Masan Bay. The reduction effects of the watershed pollutant loads are clearly shown, while the positive influence of the water quality (WQ) are not substantial because the pollutant load also increased continusly after WTP construction. The reduction effects of the COD, 55, TN and TP parameters are 17.6%, 68.9%,66.7%, and 38%, respectively in Masan Bay (zone I). The environmental condition of the northern part of Chinhae Bay (zone ll), however, is slowly degraded because of the direct and indirect effects - effluents discharge from the WTP and pollutants release from the sediment, respectively.

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Skull Base Invasion of Adenoid Cystic Carcinoma of the Lacrimal Gland : A Case Report

  • Lee, Jae-Il;Kim, Young-Zoon;Lee, Eun-Hee;Kim, Kyu-Hong
    • Journal of Korean Neurosurgical Society
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    • v.44 no.4
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    • pp.273-276
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    • 2008
  • Although adenoid cystic carcinoma (ACC) of the lacrimal gland is a rarely encountered orbital tumor, it invades intracranially more frequently than carcinomas of other glands in the head and neck. A 52-year-old man underwent orbital exenteration and resection of intracranially extended tumor via a fronto-orbito-zygomatic approach in combination with a transfacial approach. Histopathologically, the tumor showed perineural, vascular, and lymphatic invasion. Additionally, he received radiotherapy (60 Gy) and adjuvant systemic cisplatin and 5-fluorouracil chemotherapy due to residual tumor in the orbit and systemic metastases (lung, ribs, and spines). He was free of progression and recurrence at 6 months after treatment. The authors report a case of skull base invasion by an ACC of the lacrimal gland to remind neurosurgeons planning intervention that this disease shows a tendency to invade intracranially.

Far-field Transport of Effluent Plumes Discharged from Masan Sea Outfalls

  • Kim, Young-Do;Kang, See-Whan;Seo, Il-Won;Oh, Byung-Cheol
    • Ocean and Polar Research
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    • v.22 no.2
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    • pp.69-80
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    • 2000
  • A 3-D particle tracking model with normalized characteristic equations has been developed to predict the variation of near-field mixing characteristics and the far-field transport of the effluent plumes discharged from sea outfalls. The model was applied to the case study on the Masan sea outfall plumes discharged through a submerged multiport-diffuser. Numerical simulations of the effluent transport for 15 days which cover neap and spring tidal cycles in Masan Bay were conducted using fall velocities of the solid wastes and the initial plume characteristics obtained from normalized near-field characteristic equations. The results showed that time variations in near-field minimum dilutions with tidal ambient flow conditions are about $45{\sim}49$. Most of the heavy particles in the effluent plumes were settled and deposited in the vicinity of the outfalls immediately, and the finer particles were transported eastwards 3 km away from the outfalls for 15 days. A similar depositional trend of contaminated sediment was also found during a recent field survey.

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Soft Switching High Frequency Inverter for New Induction Heating (새로운 유도가열용 소프트 스위칭 고주파 인버터)

  • Kim, C.Y.;Mun, S.P.;Kim, M.Y.;Kim, H.J.;Lyu, J.Y.;Kim, S.W.
    • Proceedings of the KIEE Conference
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    • 2007.11c
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    • pp.119-124
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    • 2007
  • This research presented the new zero-current switching pulse width modulation SEPP(Single Ended Push-Pull)high frequency inverter for solving the problem of the zero-current SEPP high frequency inverter circuit which is using widely in the practical application of an induction heating apparatus, the soft switching operation and power control are impossible when the lowest power supply in the zero-current switching pulse width modulation SEPP high frequency inverter. The inverter circuit which is attempted by on-off operation of a switch has the reduction effect of the power loss due to a soft switching and a high frequency switching. And it confirmed that the power regulation is possible continuously from 0.25[kW] until 2.84[kW] in the case the duty rate(D) changes from 0.08 to 0.3 under zero-current switching operating by a dissymmetry pulse width modulating control and the power conversion efficiency comes true the efficiency of 95[%]. Due to the result above, the ZCS PWM SEPP high frequency inverter will be effective as sources of an induction heating apparatus.

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