• Journal of Veterinary Clinics
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• v.31 no.2
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• pp.141-144
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• 2014

Two dogs (Case 1 weighing 27 kg, Case 2 weighing 42 kg) were referred with hindlimb lameness. On physical examination, there was moderate pain on stifle joint testing and mild cranial translation on cranial drawer testing in Case 1. This translation was obvious when the patient was under general anesthesia. Case 2 showed discomfort during hyperextension of the stifle joint, but no significant cranial translation under general anesthesia. Joint effusion was detected on radiography in both cases. Based on physiologic and radiographic examinations, cranial cruciate deficiency was suspected, so exploratory arthroscopy was performed. Arthroscopy revealed partial rupture of the cranial cruciate ligament (CrCL) in both cases. Case 1 showed unstable partial CrCL rupture, while Case 2 had stable CrCL rupture. Tibial tuberosity advancement (TTA) was carried out as planned. Seroma occurred one week postoperatively in Case 2, and was removed surgically. The patients returned to satisfactory weight-bearing ambulation 5 months after initial surgery. Based on the results of these cases, TTA appears to be a useful procedure in the treatment of CrCL partial rupture.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2011.05a
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• pp.107-110
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• 2011

In this study is to improve insulation performance that are the most weak insulation part of fastening unit of the curtain wall. It was produced that thought out to minimize mullion and connecting part, and evaluated performance that make a layer of insulation in the middle by using vibration-proof rubber or silicon. Vibration-proof rubber insulation is 2.6℃~4.0℃ higher and silicon insulation is 2.4℃ higher than non-insulation. Therefore the insulating layer of fastening unit is necessary.

• Journal of the Korean earth science society
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• v.31 no.7
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• pp.762-771
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• 2010

The purpose of this study was to make a suggestion for the direction of writing textbook by comparing and analyzing the contents about 'Adiabatic Change' in earth science I textbooks. For this study, six textbooks were chosen among the eight government-authorized earth science I textbooks that were in general use in schools. Based on the researcher's preview of the six chosen textbooks, three categories were established as a criteria for analysis of the contents of 'adiabatic change': definitions, illustrations, and experiments. Thirty five preservice secondary teachers participated in analyzing the six textbooks based on the above three categories. Each of the six books was given an alphabet from A to F. The analysis results were as follows: Textbook A was turned out as the best textbook in the category of definition, textbook C as the best in the category of illustration, and textbook B as the best in the category of experiment about the concept of 'adiabatic change'. However, each of the six earth science textbooks showed an insufficient part in one way or the other. The results imply that the inaccurate and inappropriate information would not only make the students difficult to understand the adiabatic change but also lead them to some level of misconceptions. Therefore, there need to reconstruct the contents of textbooks to be more systematic, accurate, and complete.

• Journal of the Korea institute for structural maintenance and inspection
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• v.17 no.4
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• pp.91-100
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• 2013

This research is to measure and analyze the thermal performance of the apartment structure and to evaluate and establish standards of thermal insulation defect in order to make the basic data necessary for determining the degree of the thermal performance degradation and for repairing and reinforcing the exterior wall of the existing apartment. Furthermore, it is to predict the part of occurrence of the thermal bridge and condensation at the apartment building structure. On the other one hand, it is also to analyze the degree of thermal insulation performance according to the standards of thermal insulation and elapsed time, through the analysis by the workability of concrete.

• Proceedings of the Korean Society of Disaster Information Conference
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• 2015.11a
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• pp.138-140
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• 2015

건축물에서 단열재는 일정한 온도를 유지하도록 하려는 부분의 바깥쪽을 피복하여 외부로의 열손실이나 열의 유입을 적게 하기 위한 재료이다. 단열재는 소재(素材) 자체의 열전도율(熱傳導率)이 작은 것이 바람직하나, 대부분 열전도율이 그다지 작지 않다. 그러므로 대개의 경우 열전도율을 작게 하기 위해서 다공질(多孔質)이 되도록 만들어 기공(氣孔) 속의 공기의 단열성을 이용한다. 일반적으로 재료의 밀도가 크면 열전도율 값이 크게 되는 경향이 있다. 이에 본 연구에서는 경량골재인 펄라이트의 입자 크기별 열전도율을 측정하여 단열재로서 사용여부를 판단하고자 한다.

• Bulletin of the Korean Space Science Society
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• 2009.10a
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• pp.50.3-50.3
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• 2009

지구관측용 광학탑재체를 탑재한 저궤도위성은 내부부품보호를 위해 표면처리와 같은 수동적 기법과 히터동작과 같은 능동적 기법을 함께 사용을 한다. 내부열손실을 막기 위해 위성외부의 거의 모든 부분을 단열재(MLI)로 감싸게 되며, 각 단열재는 견고하게 고정이 된다. 광학탑재체는 구성품의 보호와 최적성능의 영상획득을 위해 다수의 히터가 장착되는데, 각 히터는 가열대상물의 온도를 실시간으로 측정하여 미리 설정된 On/Off 온도를 기준으로 제어가 된다. 궤도상에서 탑재체가 겪게 되는 다양한 궤도열환경 시나리오에 대한 열해석결과를 이용하여 히터의 위치, 용량 및 제어온도가 결정된다. 궤도상 운용 중, 위성을 보호하는 단열재 사이에 미세한 틈이 발생한 가상적인 상황을 가정하여, 탑재체 히터의 임무주기변화와 탑재체 운용에의 영향을 분석한다.

• Journal of Advanced Marine Engineering and Technology
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• v.36 no.8
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• pp.1097-1103
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• 2012

There are many fish farms being cultivated in the southwestern cost of South Korea. Because the farms cultivating use the basic method that inflow and circulate sea-water, slight negligence and bad design cause major negative impact on fish deaths. Also, the optimal temperature for each specie of fishes has already been proven to differ on each specie. Maintaining this environment, regardless of seasons, is very difficult and that requires research to develop. In this paper, basic characteristics of heat and mechanism of heat transfer are studied. Based on this, Open-end water vessel is designed and constructed using sandwich-insulation panels and simulated to store the heat in certain isolated space. This study confirmed that it is possible to keep constant temperature by this method, in large areas of water where it is insulated by heat insulator. and equipped with heater in Open-end water vessel where the other part is heated. The AC power controller maintains the constant temperature required and the temperature controller detects and displays the temperature by using the micro-processor.

• Proceedings of the Korean Vacuum Society Conference
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• 2016.02a
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• pp.167.2-167.2
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• 2016

태양에너지는 전자기파로써 파장에 따라 여러 부분으로 나뉜다. 파장이 780nm 이상인 부분의 영역을 IR (infra Red) 즉 적외선으로 불린다. 이 부분이 열선에 해당하는 부분인데 대부분의 창문에 설치된 커튼이나 vertical 등은 빛을 차단하는 수단일 뿐, 유입되는 열 (적외선)을 차단시킬 수는 없다. 열은 결국 실내의 온도를 높이기 때문에 난방비 등 에너지 손실을 막긴 어렵다. 단열필름은 커튼이나 vertical과 달리 실내로 유입되는 열 (적외선)을 다시 실외로 반사시켜 실내로 유입되는 열을 최소화 한다. 본 연구는 IR 차폐를 목적으로 연구 되었고, 거기서 한 발 나아가 실내 분위기 등을 고려하여 소비자의 구호에 맞는 제품에 더 맞추기 위해 연구되었다. 기존 제품들과 차별된 점은 색상을 위한 추가적인 작업없이 굴절률과 두께 factor 등을 변화시켜 바로 7가지 색을 구현한다는 장점을 가지고 있다. 따라서 가격 경쟁력에서도 우위를 점 할 수 있는 중요한 기술이라 할 수 있겠다. 박막제조 장비로는 DC pulse In-line Sputter를 사용하였으며, 굴절률과 광학적인 두께 측정을 위한 ellipsometer, 그리고 UV-vis 를 통한 Transmittance 측정으로 제품 능력을 확인하였다.

• KOREAN POULTRY JOURNAL
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• v.41 no.5
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• pp.110-113
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• 2009

단열목적으로 개발한 최첨단 진공세라믹 소재 인슐래드를 축사에 접목해 탁월한 효과를 자랑하는 기업이 있다. 지난해 벤처기업으로 등록된 바이오맥은 보온 보냉 효과가 뚜렷한 꿈의 소재 '인슐래드' 제품 판매와 '바이오 커튼'을 개발해 업계에서 주목받고 있다. 또한 부화율과 산란율 개선에 효과를 나타내는 항생제대체용 사료첨가제 '애니웰' 제품 개발과 금년부터 의욕적으로 시행하는 HACCP 컨설팅 등 기자재, 사료첨가제, 사양관리 등 축산농가의 모든 부분에 대해 연구하는 기업, 바이오맥을 찾았다.

• Journal of Soil and Groundwater Environment
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• v.7 no.3
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• pp.33-44
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• 2002

A field technique for assessing the transmissive fractures in an aquifer was applied to a fractured rock formation in Youngchun area Korea. Geological mapping and detailed acoustic borehole teleview(BHTV) logging were performed to obtain information about the fractures. The study area consists predominantly of two types of fractures. The fracture sets of low angle partings such as bedding and sheeting plains have strike N70-80$^{\circ}$W, 25$^{\circ}$-30$^{\circ}$SW and N3S$^{\circ}$W, 12$^{\circ}$NE, respectively. In areas of high fractures, on the other hand, the major fracture sets show strike N80$^{\circ}$W and dip 70$^{\circ}$-85$^{\circ}$SW, N10$^{\circ}$E.85$^{\circ}$SE in sedimentry rocks, N40-50$^{\circ}$E.85$^{\circ}$SE/85$^{\circ}$NE, N70$^{\circ}$E.80$^{\circ}$SE, and N7$^{\circ}$-75$^{\circ}$W.80$^{\circ}$SW in granites and volcanic rocks. Injection tests have been performed to identify discrete production zones and quantify the vertical distribution of hydraulic conductivity. The calculated hydraulic conductivities range from 3.363E-10 to 2.731E-6, showing that the difference between maximum and minimum value is four order of magnitude. Dominant section in hydraulic conductivity is extensively fractured. Geophysical logging was carried out to clarify characterization of the distribution of fracture zones. Transmissive fractures were evaluated through the comparison of the results obtained by each method. The temperature logs appeared to be a good indicator that can distinguish a high transmissive fractures from a common fractures in hydraulic conductivity. In numerous cases, evidence of fluid movement was amplified in the temperature gradient log. The fracture sets of N70-80$^{\circ}$W.60-85$^{\circ}$NE/SW N75-80$^{\circ}$W.25-30$^{\circ}$SW, N50-64$^{\circ}$W.60-85$^{\circ}$NE, N35-45$^{\circ}$E.65-75$^{\circ}$SE, and N65-72$^{\circ}$E.80$^{\circ}$SE/60$^{\circ}$NW were idenfied as a distinct transmissive fractures through the results of each tests.