• Journal of the Korean Society of Hazard Mitigation
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• v.3 no.2 s.9
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• pp.89-97
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• 2003

Indirect tensile strength(IDT) test and resilient modulus(Mr) test were performed to evaluate experimental performance characteristics for the conventional and crumb rubber-modified(CRM) asphalt concrete using dry and wet processes asphalt. The IDT test was conducted under three temperatures(5, 10, 20$^{\circ}C$). According to the test results, it was shown that indirect tensile strength of CRM asphalt concrete was lower than that of the conventional one. However, toughness and maximum vortical strain of the CRM asphalt concrete were higher than those of the conventional one. The results of Mr test were presented that Mr of CRM asphalt concrete was higher than that of the conventional one. In addition, it was revealed that the overall laboratory performance characteristics of the wet-processed CRM asphalt concrete was better than those of the dry-processed one.

• Journal of the Korean Recycled Construction Resources Institute
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• v.3 no.4
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• pp.342-347
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• 2015

This study is basic experiment which prevents indiscriminate reclamation and recycles the wasted tire in order to solve environmental pollution according to generation rate of the wasted tire from recently industrial development. By applying as the substitute material of the lightweight aggregate among the constructional materials in order to evaluate the lightness of the wasted tire chip and suggest the recycling plan of the wasted tire chip. The prior experiment did the replacement ratio of the wasted tire with 20%, 40%, 60%, 80%, 100%, etc. and made a study on the strength and density properties. Based on the prior experiment of wasted tire, the replacement ratio was fixed at 15, 20, 25%, particle size of wasted tire was fixed at 0.2, 0.8, 1~2, 3~5, 5~7(mm). As a result, it is supposed that the best replacement ratio and particle size are 15% and 1~2mm, respectively.

• Journal of Environmental Policy
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• v.13 no.3
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• pp.21-42
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• 2014

Abandoned roads, abandoned expressways included, cause a lot of problems such as contamination and environmental damages to underground water, fragmentation of wildlife habitats yet they are not appropriately maintained or managed because of jurisdictional conflicts and, often more importantly, insufficient budget of governments. The restoration of abandoned roads is known to benefit society and its constituents by providing better environment and higher living standards but the monetary value of the benefit is hard to measure because of non-marketability of the good that the restoration brings about. In this case, the contingent valuation method(CVM) is most powerful in evaluating non-marketable value of goods and hence it is used widely. We also used the CVM to value the benefit of restoration of abandoned expressways to find out: about 40% of total households are willing to contribute positive amount for restoration; better awareness of environmental issues leads to higher willingness-to-pay.

• Tuberculosis and Respiratory Diseases
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• v.64 no.3
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• pp.230-235
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• 2008

We described herein the first case of primary $Sj{\ddot{o}}gren^{\prime}s$ syndrome in Korea which presented with multiple cysts caused by only peribronchiolar lymphocytic infiltration, a rare pulmonary manifestation in $Sj{\ddot{o}}gren^{\prime}s$ syndrome, and was confirmed by surgical lung biopsy. A brief review of the literature has been included.

• Journal of the Korean GEO-environmental Society
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• v.13 no.8
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• pp.75-84
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• 2012

In this paper, strength and leaching characteristics of water sludge-added lightweight soils(WALS) considering reinforcing materials(waste fishing net, glue treated waste fishing net and geogrid) and layer(1 or 2 layer) were investigated using unconfined compression test and leaching test. Several specimens of water sludge-added lightweight soil consisted of water sludge, cement, and bottom ash were prepared according to flowability. Reinforcing material added into these specimens were waste fishing net and geogrid. A glue treated waste fishing net was also added in order to increase interlocking between soil mixture and waste fishing net. Strength increased in the order of WALS reinforced by waste fishing net, glue treated waste fishing net, and geogrid. Strength of specimen with double layer-reinforcing material was greater than that of specimen with single layer reinforcing material. Leaching result of WALS was also satisfied with standard of ministry of environment.

• Journal of Chest Surgery
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• v.39 no.4 s.261
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• pp.323-327
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• 2006

Lymphangioleiomyomatosis (LAM) is a rare disease in women of childbearing ages that eventually leads to respiratory failure. Lung transplantation is the only conclusive therapeutic modality in end-stage LAM. While single-lung transplantation is the preferred operation, the graft failure or recurrence of LAM was reported. We performed a single lung transplantation on a 36-year-old woman suffering from respiratory failure due to lymphangioleiomyomatosis. After a 1-year follow up, the patient was readmitted because of graft failure with collapsed transplanted lung. The lung volume reduction surgery (LVRS), tracheostomy and ventilator care were performed. However, neither the medical nor surgical treatment had any effect. Subsequently, we performed a contralateral single lung re-transplantation and had a good postoperative results.

• Journal of Chest Surgery
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• v.32 no.12
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• pp.1078-1086
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• 1999

배경 :폐포내 fibronectin(FN)의 분포와 역할은 많은 연구자에 의하여 연구되어왔다. 흰주에서 폐의 분화시 FN은 태자에서 폐포의 기저막에 주로 분포되고 간엽조직에서도 관찰되면 분화가 진행되면 폐포막의 간질조직에 FN의 함량이 높아진다. 또 FN은 일반적으로 폐포대식세포(alveolar macrophage)에서 분비되고 폐에 질병이 발생하였을 때 다량의 FN이 폐포대식세포에서 분비된다고 보고되어 있다(Schoenberger 등 1984: Ozaki 등 1990; Rom 등 1987 ; Cordier 등 1990) 저자는 흰쥐의 폐포발생이 진행중인 폐포기 후반에서의 폐포막내 정상적인 FN이니 분포의 변화와폐포를 구성하는 큰 폐포세포(type II pneumocyte)에서의 FN의 분비여부를 면역조직염색법과 전자현미경을 이용하여 추적하고자하였다 실험대상 및 방법: 청정동물실에서 사육한 SPF 흰쥐(Sprague-Dawley 계)를 임신시켜 질도말법을 이용하여 태령을 정한 뒤 태아제 17일 및 20일 출생 제 1일, 2일, 3일, 5일, 및 7일의 신생흰쥐를 실험동물로 사용하였으며 대조군의 흰쥐는 체중 200ㅎ의 건강한 수컷을 사용하였다 흰쥐의 폐조직은 면역조직염색을 위해 rabbit anti rat fibronectin polyclonal antibody를 일차항체로 biotinylated goat anti rabbit IgG를 이차항체로 사용하여 폐실질세포내 FN의 분포를 LM으로 관찰하였고 한편 폐포막을 구성하는 세포 중 큰폐포세포가 FN을 분비하는 세포인지를 추적하기 위해 금과립을 첨가한 항체를 사용하여 큰 폐포세포내 FN의 분포를 EM을 이용해서 추적한 결과 다음과 같은 결과를 얻었다 결과 : 제 17일 및 20일 태아시기의 폐에서의 혈관주위에 강한 FN반응이 관찰되었다 출생후 폐포막의 FN의 활성은 출생후 5일 및 7일에 최고주에 달했다. 출생직후 1-2일경에 혈관의 조직내 FN의 활성이 양성을 나타내지만 3일이후 활성이감소되었다. 폐포대식세포내 FN의 활성은 출생후 증가되었다. 폐조직내 소기관지의 FN의 활성은 출생후 완만하게 상승되었다. 큰 폐포세포는 출생 1-3일에 일정량의 FN 반응이 세포질과 미세융모내에 관찰되었다. 결론 : 이상과 같은 결과로 흰쥐의 폐포의 분화과정이 계속되는 출생후 폐에서 FN의 분비는 7일이내에 성숙흰쥐의 폐포내 반응과 비슷한 반응으르 보이며 이때 폐의 실질조직은 분화가 거의 완료되었을 것으로 사료되었고 큰 폐포세포에서도 FN이 분비되는 것으로 결론지울수 있다.

• Journal of Chest Surgery
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• v.42 no.6
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• pp.792-795
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• 2009

Pulmonary sequestration is a relatively rare malformation. Infection with common pyogenes is a frequent complication in this disease. We report here on a case of intralobar sequestration that was infected with Mycobacterium tuberculosis in the absence of any other site of tuberculous infection. A 40-year man presented with a small amount of hemoptysis, and the man had been previously diagnosed with bronchiectasis 3 years ago. Chest computerized tomography revealed bronchiectasis with pneumonia in the left lower lobe and there was a large feeding artery from the thoracic aorta. A lobectomy of the left lower lobe was conducted via thoracotomy and the final pathologic examination confirmed pulmonary tuberculosis limited to the intralobar sequestrated lung. The patient underwent anti-tuberculous chemotherapy from the postoperative $7^{th}$ day and he was discharged without any adverse event.

• Journal of Korea Society of Waste Management
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• v.35 no.7
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• pp.660-669
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• 2018

Domestic automotive shredder residue (ASR) recycling facilities must comply with 60% of the energy recovery criteria calculated by the waste control act, based on resource circulation of electrical and electronic equipment and vehicles. The method of calculating energy recovery criteria was newly enacted on November 6, 2017, and it has been judged that it is necessary to consider applicability. In this study, the energy recovery efficiency of 7 units was calculated by past and present calculation methods. Furthermore, this study attempts to find applicability and a method of increasing the energy recovery efficiency by taking advantage of available potentials. An analysis of the calculation results showed that the average values calculated by past methods, present methods, and the method that includes available potentials are 76.35%, 70.68%, and 78.24%, respectively. Therefore, the new calculation method for energy recovery efficiency is also applicable to domestic automotive shredder residue recycling facilities.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.28 no.4C
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• pp.247-253
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• 2008

This paper investigates the mechanical characteristics of waste tire powder-added lightweight soil in which dredged soils, waste tire powder and bottom ash were reused. In this study, 5 groups of soil samples were prepared with varing contents of waste tire powder ranged from 0% to 100% at 25% intervals by the dredged soil weight. The mixed soil samples were subjected to unconfined compression and elastic wave tests to investigate their unconfined compressive strengths and dynamic properties. Test results showed that the unconfined compressive strength and unit weight decreased as the waste tire powder contents increased, but axial strain at failure increased. Also stress-strain relationship of waste tire powder-added lightweight soil showed a ductile behavior rather than a brittle behavior. The result of elastic wave tests indicated that the higher waste tire powder content, the lower elastic wave velocity and the lower shear modulus (G).