다양한 형태의 키토산이 창상치유에 미치는 효과

이병하,서만수,류형호,박세정,양정덕,조병채,문정환,정호윤,이동걸,박재우,김인산,김상우,배은희,이동신 대한성형외과학회 2004 Archives of Plastic Surgery Vol.31 No.3

This study is to compare the effect of wound healing using three different types of chitin, which include the shapes of sponge, velvet, thick non-woven fabrics, and thin non-woven fabrics. The sponge type had more capacity to absorb the first discharge of a wound than the velvet type and the two non-woven fabrics types. Instead of absorbing the discharge effectively, the velvet type showed a difficulty to take off the dressing stuff from a wound since it was solidly stuck to the wound. The sponge type showed less infiltration of inflammatory cells, producing angiogenesis and fibroblast faster than any other types. Next, the thick non-woven fabrics type was a little more effective than the thin non-woven fabrics type: However, there was no difference between two types. The velvet type sustained the infiltration of inflammatory cells for the longest duration, producing slower angiogenesis and fibroblast. In wound contraction and wound healing, the sponge type was most effective with statistical significance than any other types(p<0.05). The two types of non-woven fabrics did not present any statistical significance in wound contraction, wound epithelization and wound healing(p>0.05).In conclusion, the sponge type showed the best effectiveness to absorb the early discharge, facilitating the progress of inflammatory phase to increase the healing rate. It induced an early healing of wound caused by wound contraction rather than by wound epithelization.

모돈의 상태에 따른 사료급여 방법

이병하,Lee, Byeong-Ha 대한양돈협회 1994 養豚 Vol.16 No.10

스페셜 이슈 : 미국 및 유럽 선진국의 이민자 통합 정책

이병하 대한지방행정공제회 2012 地方行政 Vol.61 No.700

광섬유격자의 원리와 특성

이병하 대한전기학회 2001 전기의 세계 Vol.50 No.9

Delaire 변법을 이용한 편측 불완전 구순열 환자의 기능적 일차 봉합술: 증례보고

이병하,박창주,황경균,심광섭,정필훈,서병무,Lee, Byung-Ha,Park, Chang-Joo,Hwang, Kyung-Gyun,Shim, Kwang-Sup,Choung, Pill-Hoon,Seo, Byoung-Moo 대한구순구개열학회 2008 대한구순구개열학회지 Vol.11 No.2

The outcome of primary surgery for cleft lip is judged by its effects on the quality of oro-facial function and development. Many surgical techniques have been tried to obtain better results, however, Delaire introduced a technique of functional closure of the lip and nose, based on the findings of no true hypoplasia in the tissues either side of the cleft. In a seven-month-old Asian male patient with unilateral incomplete cleft lip, we carried out the primary closure by modified Delaire's technique. With no alveolar bone graft, the vertical incision on the nasal base was omitted in this patient because of his acceptable symmetry of nose. Also, a small Z plasty was added on the non-cleft side. The V-shaped incisions, whose notch was located on each side of the red vermilion, were designed and beveled incisions were performed for the rehabilitation of lip length and thickness, considering the postoperative wound contracture. We assured that this modification of Delaire's technique could be applied for various cases of primary closure of incomplete cleft lip.

3상 직렬공진형 고전압 커패시터 충전기의 설계 및 구현

이병하,차한주,한병문 대한전기학회 2012 대한전기학회 학술대회 논문집 Vol.2012 No.7

$\alpha$-Sialon/SiC Whisker 복합재료의 기계적 물성 및 마모 특성 연구

이병하,김인섭,이경희 한국세라믹학회 1993 한국세라믹학회지 Vol.30 No.10

Sialon ceramics are presently seen as promising materials with high hardness, strength, fracture toughness and corrosion resistance for friction and wear applications. The objective of present work is to improve of mechanical properties and wear resistance of $\alpha$-Sialon(x=0.4) by addition of SiC whisker. $\alpha$-sialon(x=0.4)/SiC whisker composites were obtained by hot-isostatic pressing at 173$0^{\circ}C$ for 1 hour under 1757Kg/$\textrm{cm}^2$ N2 pressure after pressureless sintering the mixture of Si3N4, Y2O3, AlN at 1780~180$0^{\circ}C$ for 3~5 hours in N2 atmosphere. As the amount of SiC whisker content increased, relative density and hardness were decreased, however fracture toughness, bending strength and tribological properties were improved. Tribological properties of $\alpha$-Sialon/15 vol% SiC whisker composite were improved in spite of its low mechanical properties.

특집논문 : 한국 이민관련 정책의 입법과정에 관한 연구

이병하 한국의회발전연구회 2011 의정연구 Vol.17 No.1

본 연구의 목적은 한국 이민관련 정책들을 윌슨의 정책유형에 따라 분류하고 정책유형에 따라 다른 입법과정을 거치는지를 분석하는데 있다. 본 연구는 기존 이민정책 연구에 있어서 간과되었던 국회 입법과정에 초점을 맞춤으로써 그간의 연구들이 주목하였던 시민사회단체의 영향력, 행정부처 간 관계, 사법부의 역할 등을 보완할 수 있다는 점에서 연구 의의를 찾을 수 있겠다. 이민정책이 크게 이민통제와 이민자 통합이라는 두 축으로 나뉜다고 할 때 이민통제 부분에서 ``외국인근로자의 고용 등에 관한 법률,`` 이민자 통합 부분에서 ``재한외국인처우기본법,`` 그리고 ``다문화가족지원법``을 연구대상으로 하여 입법과정을 분석하였다. 연구결과, 이민관련 정책이라고 하더라도 정책유형 상 다른 유형으로 분류된다면 서로 다른 입법과정을 거치게 된다는 것을 확인하였다. 이민통제 부분에서는 윌슨의 정책분류 상 이익집단정치의 특징을 나타내 특정 집단 간에 첨예한 대립양상이 있었던 반면, 이민자 통합 부분에서는 고객정치의 특징을 보이며 특별한 반대 없이 신속한 입법과정을 거쳤음을 알 수 있었다.

Analysis of the Charging Characteristics of High Voltage Capacitor Chargers Considering the Transformer Stray Capacitance

이병하,차한주 전력전자학회 2013 JOURNAL OF POWER ELECTRONICS Vol.13 No.3

In this paper, the charging characteristics of series resonant type high voltage capacitor chargers considering the transformer stray capacitance have been studied. The principles of operation for the four operational modes and the mode changes for the four different switching frequency sections are explained and analyzed in the range of switching frequency below the resonant frequency. It is confirmed that the average charging currents derived from the above analysis results have non-linear characteristics in each of the four modes. The resonant current, resonant voltage, charging current, and charging time of this capacitor charger as variations of the switching frequency, series parallel capacitance ratio (k=Cp/Cs), and output voltage are calculated. From the calculation results, the advantages and disadvantages arising from the parallel connection of this stray capacitance are described. Some methods to minimize charging time of this capacitor charger are suggested. In addition, the results of a comparative test using two transformers whose stray capacitances are different are described. A 1.8 kJ/s prototype capacitor charger is assembled with a TI28335 DSP controller and a 40 kJ, 7 kV capacitor. The analysis results are verified by the experiment.

글로벌 난민 레짐의 변화: 난민 글로벌 컴팩트의 의미와 한계

이병하 한국사회역사학회 2020 담론 201 Vol.23 No.3

This paper aims to analyze the change of global refugee regime focusing on Global Compact on Refugees. In this article, I demonstrate the meaning and limitations of the responsibility-sharing mechanisms and the Comprehensive Refugee Response Framework within Global Compact on Refugees. The key elements of the current refugee crisis are disproportionate burden on refugee-hosting countries, and protracted refugee situations. However global refugee regime has limits in specifying the responsibility-sharing for the protection of refugees, and it has failed to provide alternative solutions to overcome protracted refugee situations. Many expect that Global Compact on Refugees has the potential to fix the problems of global refugee regime. Global Compact on Refugees provide Global Refugee Forum and Support Platform in order to strengthen the responsibility-sharing. It also offers the Comprehensive Refugee Response Framework based on humanitarian-development nexus. This article argues that Global Compact on Refugees is insufficient for elaborating indicators and monitoring procedure. It points out that the Comprehensive Refugee Response Framework mainly focuses on economic capability of refugees without considering the multi-dimensional capability, and its neoliberal view might neglect the protection of refugees, which should be the ultimate goal of global refugee regime. 본 논문의 주요 목적은 난민 위기로 촉발된 글로벌 난민 레짐의 변화를 난민 글로벌 컴팩트를 중심으로 분석하고, 책임 분담 메커니즘과포괄적 난민대응체제가 가진 의미와 한계를 분석하는 것이다. 본 논문은 선진국과 후진국 간 책임의 불균형과 장기화된 난민 상황이 난민 위기의 주요 특징이라고 본다. 그러나 글로벌 난민 레짐은 난민 보호를 위한 책임 분담을 명확히 하고, 장기화된 난민 상황을 극복하기위한 대안적 해결책을 제시하는데 한계가 있었다. 난민 글로벌 컴팩트는 이러한 글로벌 난민 레짐의 문제점을 개선하기 위한 시도이다. 난민 글로벌 컴팩트는 책임 분담 메커니즘을 강화하기 위해 글로벌난민 포럼과 지원 플랫폼이라는 제도를 마련하고 있으며, 인도주의- 개발 연계에 기반 한 포괄적 난민대응체제를 제시하고 있다. 본 논문은 난민 글로벌 컴팩트의 책임 분담 기제가 구체적인 지표와 모니터링 절차를 통해 책임 분담을 촉진시키는 데 한계가 있고, 포괄적 난민대응체제는 난민의 경제적 역량에만 초점을 맞추고 있으며, 신자유주의적 관점에 기반하여 개인의 책임을 강조함으로써 난민 레짐의본래 목적인 난민 보호를 소홀히 할 가능성이 있다고 주장한다