• 한국고분자학회:학술대회논문집
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• 한국고분자학회 2006년도 IUPAC International Symposium on Advanced Polymers for Emerging Technologies
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• pp.379-379
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• 2006

AcAP was prepared by reacting p-hydroxyacetophenone (HAP) with acryloyl chloride (Ac) in presence of triethylamine (TEA) in MEK at $0^{\circ}C$. The reaction was monitored by TLC and the prepared monomer was characterized by UV, IR, $^{1}H-NMR\;and\;GC-MS$. The homo- [poly (AcAP)] and copolymers [poly (AcAP-co-MMA)] were prepared by solution polymerization at $70^{\circ}C$, in which BPO as initiator. The molecular weight of the polymers was determined by GPC. In order to find out the AF activity of prepared polymers, representatives of marine microfoulers, shipfouling bacteria (B. macroides & P. aeruginosa) and microalgae (A. coffeaeformis & N. incerta) were screened. The results of antibacterial activity and diatom attachment assays revealed potential AF efficiency of these polymers.

• Journal of Oral Medicine and Pain
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• 제20권1호
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• pp.105-115
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• 1995

합곡에 전기침술자극요법이 하악구치에 미치는 동통역치에 관한 효과를 알아보고자 본연구를 시행하였다. 전기침술자극요법시행전에 시행중 10분, 시행후 하악구치의 감각과 통통역치를 측정하였으며 2일후 같은 검사자들을 대상으로 위전기침술자극요법시행전, 위전기침술자극요법시행중 10분, 위전기침술자극요법시행후에 하악구치의 감각과 동통역치를 측정하여 다음과 같은 결과를 얻었다. 합곡에 전기침술자극요법을 시행시 하악구치의 감각역치와 동통역치가 유의성있게 증가하였다. 따라서 합곡에 대한 전기침술자극요법이 하악구치의 동통완화에 효과적이라 사료된다.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2006년도 춘계 학술발표회 논문집
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• pp.703-710
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• 2006

The objective of this study is to acquire stabilization of collapse of cut-slope in Chang-Nyung, Gyeong-Nam. The following shows the results of this study. We applied a reinforcement method with the latticed beam $(0.50\times0.50)$ + permanent anchor($PC\;6\times\phi12.7mm$, Ta = 50.0t/EA, etc 3.0m), and fill gravels(D=35cm) in the latticed beam. We attenuated the slope (1:2.0), and stabilized the slope pace by ASANA method. We planned a drainage way(U-type, $0.40\times0.40$) in order to prevent surface water from inflowing into underground.

• 한국환경과학회:학술대회논문집
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• 한국환경과학회 2001년도 정기총회 및 봄 학술발표회 초록집
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• pp.173-175
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• 2001

흡착에 필요한 최적의 세라믹 볼의 소성온도는 93$0^{\circ}C$가 가장 적당하다. 공업용수 중에 용존되어 있는 유기물 및 유해성분이 제거(COD나 $BOD_{5}$)가 가능하다. Fe와 Pb의 중 금속 제거의 경우 Pb의 경우가 제거 효율이 더 크며, 이에 따른 mechanism으로 이온교환이온이 Pb의 경우 2가 양이온이기에 더욱 효율이 크고 Fe의 경우는 수화하여 구조적인 붕괴를 일으키며, 2가와 3가의 공존하므로 Pb보다 제거율이 낮다. Fe와 Pb 중금속수를 1시간 동안 제거하여 Freundlich형 등온식에 따른 계산 결과 5,10ppm에서 1/n의 수치가 2 이상을 넘지 않고 있고, 500, 1000ppm의 경우는 등온이온교환으로 할 때 1/n의 수치가 2에 근접하므로 분말의 경우에 비해 제거율이 낮지는 않다. 그러므로 경제적 이점과 재활용면에서 볼의 사용이 우수하다는 것을 알 수 있다. 장치의 용기에 비례하여 볼 때 볼의 양은 600g이 가장 적당한 양이다. 등온교환의 경우 Apatite(HAp)를 이용한 분말의 제거율 보다 약간 낮으나 분말의 경우 사용 후 취급이 용이하지 않고 2차적 오염이 예상되므로 세라믹 볼의 경우 환경친화성재료로 여러 가지의 수처라 공정에 적용이 가능할 것으로 판단된다.

• 한국생물정보학회:학술대회논문집
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• 한국생물정보시스템생물학회 2004년도 The 3rd Annual Conference for The Korean Society for Bioinformatics Association of Asian Societies for Bioinformatics 2004 Symposium
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• pp.279-285
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• 2004

In the disease association study, the tagSNP selection problem is important at the view of time and cost. We developed the new tagSNP selection system that has also facilities for the haplotype reconstruction and missing data processing. In our system, we improved biological meanings using LD coefficients as well as dynamic programming method. And our system has capability of processing large -scale dataset, such as the total SNPs on a chromosome. We have tested our system with various dataset from daly et al., patil et al., HapMap Project, artificial dataset, and so on.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2005년도 추계 학술대회논문집(수송기계편)
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• pp.41-44
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• 2005

This paper described improvement and operation of a 'Tail-Fan' anti-torque performance test system KARI (Korea Aerospace Research Institute) developed a 'Tail-Fan' anti-torque system of a helicopter and a performance test-rig to test the performance of the Tail-Fan. The test-rig was improved for full rotating test in 4300rpm(100%). Machinery and hydraulic parts ware changed to reduce vibration and to increase safety. To find the operation rotating speed for the performance test, vibration test were carried out rising accelerometers on tail gear box. The performance test conditions of the Tail-Fan to avoid a resonance were found from vibration test results. The Tail-Fan operation tests were performed safely frier to carry out performance test.

• 혜화의학회지
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• 제13권1호
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• pp.261-267
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• 2004

As mentioned above, I have acquired some valuable results about medical treatments with acupuncture for "Tennis elbow" after studying oriental medical books. 1. In "HungTiNeiChing", there was called "joo-ryun" and "joo-mang" related to "Tennis elbow". 2. The medriens which remedy for 'tennis elbow' are as follow : 'Soo-yangmyoung', 'Soo-soyang', 'Soo-taeeum', 'Soo-gueleum', 'Chok-taeyang', 'Soo-taeyang' and 'Soo-soeum' in the order of frequency of use. 3. The acupuncture points which remady for 'tennis elbow' are as follow : 'Gok-ji', 'Soo-sam-ri', 'Joo-ryo', 'Hap-gok' and 'Woe-kwan' in the order of frequency of use. 4. Medical treatment with acupuncture is based on occuring area of pain and path of 'Kyoung-Rak'.

• KCI Concrete Journal
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• 제12권2호
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• pp.11-21
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• 2000

It is not easy to correctly predict deflections of reinforced concrete beams and one-way slabs due to the variability of parameters involved in the calculation of deflections. Monte Carlo simulation is used to assess the variability of deflections with known statistical data and probability distributions of variables. A deterministic deflection value is obtained using the layered beam model based on the finite element approach in which a finite element is divided into a number of layers over the depth. The model takes into account nonlinear effects such as cracking, creep and shrinkage. Statistical parameters were obtained from the literature. For the assessment of variability of deflections, 12 cases of one-way slabs and T-beams are designed on the basis of ultimate moment capacity. Several results of a probabilistic study are presented to indicate general trends indicated by results and demonstrate the effect of certain design parameters on the variability of deflections. From simulation results, the variability of deflections relies primarily on the ratio of applied moment to cracking moment and the corre-sponding reinforcement ratio.

• 한국세라믹학회지
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• 제42권10호
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• pp.660-664
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• 2005

Hydroxyapatite powder was injected into the tooth after decayed tooth clinic. The microstructure of tooth was observed after a tooth extraction in the body. The hydroxyapatite powder was stiffened and the junction of hydroxyapatite powder and tooth was observed. The Ca/P atomic ratio of hydroxyapatite-tooth boundary was higher than hydroxyapatite matrix. And microhardness of hydroxyapatite matrix was 92.4 Hv. The junction of hydroxyapatite powder and tooth was due to the $Ca^{2+}$ ion shift of hydroxyapatite or the firm waxy body was due to setting of hydroxyapatite powder.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2008년도 추계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.41-43
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• 2008

This paper deals with a study on characteristic of inductance on spoke type motor. The rotor and stator is redesigned as rounding teeth of stator and pole surface of rotor. Result, a shape of air-gap is changed and the cogging torque is reduced greatly. In consequence, the inductance of spoke type motor is changed. The Finite Element Analysis(FEM) is used to characteristics.