• Title/Summary/Keyword: 만회정

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Restoration Model for Culture Contents of the Man-Heo-Jeong in Ulsan (울산 만회정의 문화콘텐츠를 위한 복원 모델)

  • Lee, Chang-Eob
    • The Journal of the Korea Contents Association
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    • v.13 no.11
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    • pp.935-943
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    • 2013
  • Man-heo-Jeong, which was located in the middle of the Sibri bamboo grove near by Tae-hwa river in Ulsan, was a Jeong-ja(a kind of pavilion) by Park Chui-moon, both a military officer and a nationwide town chief. Now we can presume the appearance of Man-heo-Jeong, referring to the old map describing old Ulsan districts and to old literatures of Park Chui-moon's family describing downtown of Ulsan of that times. It is estimated that the size of Manheo-Jung was constructed three-bay in front view, one point half-bay in side view and terrace in the fore front. Its space composition was designed likewise one-bay was both sides and in the middle there was one-bay Maru called joong-dang-hyeob-sil type. Such a structure made people to enter from the back entrance of gazabo and look the front view dramatically.

A Study on the Effect of Non-Clean Water Treatment Chemicals for R-134a Turbo-Chiller Condensers (R-134a 터보냉동기 응축기의 무세정 수처리 약품 효과 연구)

  • JUNG, DA-WOON;KIM, MAN-HOE
    • Transactions of the Korean hydrogen and new energy society
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    • v.33 no.4
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    • pp.437-445
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    • 2022
  • This paper presents an experimental study on the main management factors of the condenser contamination such as fouling and corrosion for the R-134a turbo-chiller to save energy, reduce corrosion rates, and reduce maintenance costs through the application of condenser non-cleaning water treatment chemical. The series of experiment is conducted using combining oxidative microbial sterilizers, non-oxidizing microbial sterilizers, and anti-corrosion agents. The leaving temperature difference and corrosion rates for three different combination of chemicals are collected and analyzed. The experimental results show that the cost reduction (4,066,000 Won/year) of the disinfectant (FT-830) can be achieved by adding the oxidative disinfectant (NaOCl) and the non-oxidizing disinfectant (NX-1116). The LTD value is maintained at 1.9℃, and the corrosion rates of copper and carbon steel specimens are 0.07 mpy and 1.61 mpy, respectively.

A Study on Fatigue Behavior of Two-Span Fiber Reinforced Concrete Beam (강섬유 보강 철근콘크리트 2경간 연속보의 피로거동에 관한 연구)

  • Kwak, Kae-Hwan;Cho, Seon-Jeong;Seok, In-Soo
    • Journal of the Korea Concrete Institute
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    • v.15 no.2
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    • pp.163-172
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    • 2003
  • As concrete structures are getting larger, higher, longer, and specialized, it is more required to develop steel fiber concrete and apply to the real world. In this research, it is aimed to have fatigue strength examined, varying the steel fiber content by 0%, 0.75%, 1.00%, 1.25%, by experimental study of Two-spans Beam with Steel Fibrous with repeated loads. The ultimate load and the initial load of flexural cracking were measured by static test. In addition, the load versus strain relation, load versus strain relation, load versus deflection relation, crack pattern and fracture mode by increasing weight was observed. On the other hand, the crack propagation and the modes of fracture according to cycle number and the relation of cycle loading to deflection relation and strain relation was observed by fatigue test. As the result of fatigue test, Two-spans Beam without Steel Fibrous was failed at 60~70% of the static ultimate strength and it could be concluded that fatigue strength to two million cycle was around 67.2% by S-N curve. On the other hand, that with Steel Fibrous was failed at 65~85% of the static ultimate strength and it could be concluded fatigue strength to two million cycle around 71.7%.

A Study on the Space Formation and Garden Characteristics of Garden Remains, Gao-Byeoleop for Restoration Design (가오별업(嘉梧別業)의 복원 설계를 위한 공간구성 및 정원 특성에 관한 연구)

  • Rho, Jae-Hyun;Kim, Soon-Ki
    • Journal of the Korean Institute of Traditional Landscape Architecture
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    • v.36 no.3
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    • pp.58-74
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    • 2018
  • This study aims to propose baseline data for designing restoration of Gaobyulup, researching space formation and characteristics of gardens of Gaobyulup, which located in the foot of Cheonmasan Mountain in Namyangju. Gaobyulup is a remain in retirement of Gyulsan Yu-Won Lee, a representative politician, administrator, and tea drinker in late Joseon Dynasty. The results of the research about the shape of Gaobyulup deducted through reference review, poetry and prose analysis, an on-the-spot survey and residents' interview are below: Lee, who used pseudonym as 'Gyulsan,' which menas Jongnamsan Mountain, yearned Mangcheonbyeoreop(輞川別業) by Yu Wang and retirement with a country house operation by Seogye Sedang Park. In the persuit of this ideal, he created and operated a country house in Gaogok of Yangju, which a family burial ground was located. Gaobyulup, which located in Gaogok in the lower part of Cheonmasan Mountain, was largely composed outer and inner gardens, and the area of house operation was started from a stone post of Gaobokji The inner garden of Gaobyulup was including major garden components like buildings, such as Sasihyanggwan, Obaekganjung, Imharyoe and Toesadam, and Chaewon near Haengrangchae, and Gwawon in an backyard. In addition, Younggwijung pavilion, which located 850m away from Gaobyulup, was the another country house inside the Byulup, thus Gaobyulup shows a duplex space formation. In the inner garden of Gaobyulup, there are Sasihyanggwan, which had functions of Sarangchae as library and depository of old paintings and calligraphic works, and Obaekganjung, a small Sarangchae which connected with Sasihyanggwan in the form of a transept. Yusanggoksuger located near Obaekganjung. Additionally, Imharyeo, a library with a tablet of Byeokryowon(??園), which located in the highest point in Byulup, has the functions of a reading room and a tea house. Many Taihu stones were located not only in Toesadam, a square-formed pond with lotus but also many places in the inner gardens. And rare garden plants were planted. These were closely related to the trend of horticulture for pleasure, wealth, and collecting old paintings and calligraphic works for pleasure of Lee. Meanwhile, the area of Younggwijung pavilion, located in Gaocheon stream fall from Byulup to Manhoiam, looks like Wooampok, a enjoying place of other personages, who use their pseudonym as "Oksan" or "Wooam" Lee identifies Wooampok as "Jesampok" and carved 'Gyulsan' s he declared this place is his operating area. Lee built Younggwijung pavilion and planted many peach trees for recreation of utopia. The stone letters of Byukpadongcheon, located in front of a bridge in the foreside of Younggwijung pavilion, seems another enchanted land created in Gaobokji inside. Lee carved Jeilsan in huge rock on the falls rear Manhoiam temple, which Lee did great role of foundation of the temple, so he identifies that this place was the end of the outer garden of Gaobyulup. This study tries to estimate traces of the country house in Gaogok through reference review and on-th-spot survey, and the results from this study are presumed based on site remains only conformed today. It needs to discover second scenary or stone carved letters between Jeilsan and Jesampok. Additionally, exact formation characteristics of Gaobyulup should be identified through excavation survey later. To do so, an interest and a major role of Namyangju-si must be equipped for future restoration of Gaobyulup.

Evaluation on Fatigue Behavior of Resilience pad for Sleeper Floating Track System in Urban Transit (도시철도 침목플로팅궤도(STEDEF)의 침목방진패드 피로거동 분석)

  • Choi, Jung-Youl;Lee, Jeong-Sug;Bong, Jae-Geun;Kim, Su-Jin;Chung, Jee-Seung
    • The Journal of the Convergence on Culture Technology
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    • v.6 no.3
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    • pp.347-352
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    • 2020
  • In this study, the variation of track impact factor according to the spring stiffness change rate of sleeper resilience pad was analyzed based on field measurements. In addition, the correlation between field measurement results and 7 million fatigue test results was verified. The fatigue effect diagram of the sleeper resilience pads was presented considering the nonlinear deterioration characteristics of the sleeper resilience pads used for the STEDEF track. Based on the field measurement results, the nonlinear characteristics of the track impact factor for the spring stiffness change rate over 30% of sleeper resilience pad on the track impact factor-track support stiffness diagram were analyzed to be consistent with the fatigue test results.

Flexible Optical Waveguide Film with Embedded Mirrors for Short-distance Optical Interconnection (근거리 광연결용 미러 내장형 연성 광도파로 필름)

  • An, Jong Bae;Lee, Woo-Jin;Hwang, Sung Hwan;Kim, Gye Won;Kim, Myoung Jin;Jung, Eun Joo;Rho, Byung Sup
    • Korean Journal of Optics and Photonics
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    • v.23 no.1
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    • pp.12-16
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    • 2012
  • In the paper, we fabricated a Ni master with $45^{\circ}$-mirror structures for flexible waveguide fabrication. The flexible waveguide films with embedded $45^{\circ}$-angled mirrors at the waveguide ends were successfully fabricated using a UV-imprint process. Next, in order to enhance the reflectivity of the mirrors, Ni(3 nm)-Au(200 nm) bilayers were evaporated on the $45^{\circ}$-angled facets through a locally opened thin mask using an electron beam evaporator. We measured propagation loss, bending loss, mirror loss and bending reliability of the fabricated waveguide.

Effect of Nasal Continuous Positive Airway Pressure after Early Surfactant Therapy in Moderate Respiratory Distress Syndrome (중등도 신생아 호흡 곤란 증후군에서 폐 표면 활성제 조기 투여 후 Nasal CPAP의 치료 효과)

  • Kim, Eun Ji;Kim, Hae Sook;Hur, Man Hoe;Lee, Sang Geel
    • Clinical and Experimental Pediatrics
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    • v.45 no.10
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    • pp.1204-1212
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    • 2002
  • Purpose : Early surfactant therapy with either gentle ventilation, high-frequency ventilation or aggressive weaning of mechanical ventilation are principles for the treatment of respiratory distress syndrome(RDS). We studied to determine the accessibility of noninvasive nasal continuous positive airway pressure(CPAP) rather than mechanical ventilation by invasive intubation after early surfactant therapy. Methods : The study group consisted of 14 infants who were born and diagnosed with moderate respiratory distress syndrome and received early surfactant therapy with nasal CPAP of PEEP 5-6 cm $H_2O$ within two hours after birth in the Fatima neonatal intensive care unit for two years from January 1999 to August 2001. The control group consisted of 15 infants who were diagnosed with the disease and could be weaned from mechanical ventilator within five days after birth during the same period. Results : The characteristics, the severity of clinical symptoms and laboratory findings in the two groups at birth showed no significant difference. Neither did the interim analysis of laboratory data in two groups. Of 14 infants in the study group who received nasal CPAP after early surfactant therapy, only two infants showed weaning failure with this therapy. In the response cases, duration of CPAP was five days and mean airway pressure was $5.4{\pm}0.5cm$ $H_2O$. Two had the complication of CPAP with abdominal distension. Final complications and outcomes in the two groups showed no signifcant difference(P>0.05). Conclusion : The clinical courses in the two groups showed no significant difference. Therefore, we suggest that early surfactant therapy with noninvasive nasal CPAP is a simple and safe method rather than aggressive weaning after invasive mechanical ventilation in moderate respiratory distress syndrome.