검색결과

검색조건
좁혀보기
검색필터
결과 내 재검색

간행물

    분야

      발행연도

      -

        검색결과 13,928

        3941.
        2012.07 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        Magnetite nanoparticles(NPs) have been the subject of much interest by researchers owing to their potential use as magnetic carriers in drug targeting and as a tumor treatment in cases of hyperthermia. However, magnetite nanoparticles with 10 nm in diameter easily aggregate and thus create large secondary particles. To disperse magnetite nanoparticles, this study proposes the infiltration of magnetite nanoparticles into hybrid silica aerogels. The feasible dispersion of magnetite is necessary to target tumor cells and to treat hyperthermia. Magnetite NPs have been synthesized by coprecipitation, hydrothermal and thermal decomposition methods. In particular, monodisperse magnetite NPs are known to be produced by the thermal decomposition of iron oleate. In this study, we thermally decomposed iron acetylacetonate in the presence of oleic acid, oleylamine and 1,2 hexadecanediol. We also attempted to disperse magnetite NPs within a mesoporous aerogels. Methyltriethoxysilicate(MTEOS)-based hybrid silica aerogels were synthesized by a supercritical drying method. To incorporate the magnetite nanoparticles into the hybrid aerogels, we devised two methods: adding the synthesized aerogel into a magnetite precursor solution followed by nucleation and crystal growth within the pores of the aerogels, and the infiltration of magnetite nanoparticles synthesized beforehand into aerogel matrices by immersing the aerogels in a magnetite nanoparticle colloid solution. An analysis using a vibrating sample magnetometer showed that approximately 20% of the magnetite nanoparticles were well dispersed in the aerogels. The composite samples showed that heating under an inductive magnetic field to a temperature of 45˚C is possible.
        4,000원
        3942.
        2012.07 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        Co and Ni as catalysts in SnO2 sensors to improve the sensitivity for CH4 gas and CH3CH2CH3 gas were coated by a solution reduction method. SnO2 thick films were prepared by a screen-printing method onto Al2O3 substrates with an electrode. The sensing characteristics were investigated by measuring the electrical resistance of each sensor in a chamber. The structural properties of SnO2 with a rutile structure investigated by XRD showed a (110) dominant SnO2 peak. The particle size of the SnO2:Ni powders with Ni at 6 wt% was about 0.1 μm. The SnO2 particles were found to contain many pores according to a SEM analysis. The sensitivity of SnO2-based sensors was measured for 5 ppm of CH4 gas and CH3CH2CH3 gas at room temperature by comparing the resistance in air to that in the target gases. The results showed that the best sensitivity of SnO2:Ni and SnO2:Co sensors for CH4 gas and CH3CH2CH3 gas at room temperature was observed in SnO2:Ni sensors coated with 6 wt% Ni. The SnO2:Ni gas sensors showed good selectivity to CH4 gas. The response time and recovery time of the SnO2:Ni gas sensors for the CH4 and CH3CH2CH3 gases were 20 seconds and 9 seconds, respectively.
        3,000원
        3943.
        2012.07 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        SnO2-mixed and Sn-doped TiO2 nanoparticles were synthesized via a hydrothermal process. SnO2-mixed TiO2 nanoparticles prepared in a neutral condition consisted of anatase TiO2 nanoparticles(diamond shape, ~25 nm) and cassiterite SnO2 nanoparticles(spherical shape, ~10 nm). On the other hand, Sn-doped TiO2 nanoparticles obtained under a high acidic condition showed a crystalline phase corresponding to rutile TiO2. As the Sn content increased, the particle shape changed from rod-like(d~40 nm, 1~200 nm) to spherical(18 nm) with a decrease in the particle size. The peak shift in the XRD results and a change of the c-axis lattice parameter with the Sn content demonstrate that the TiO2 in the rutile phase was doped with Sn. The photocatalytic activity of the SnO2-mixed TiO2 nanoparticles dramatically increased and then decreased when the SnO2 content exceeded 4%. The increased photocatalytic activity is mainly attributed to the improved charge separation of the TiO2 nanoparticles with the SnO2. In the case of Sn-doped TiO2 nanoparticles, the photocatalytic activity increased slightly with the Sn content due most likely to the larger energy bandgap caused by Sn-doping and the decrease in the particle size. The SnO2-mixed TiO2 nanoparticles generally exhibited higher photocatalytic activity than the Sn-doped TiO2 nanoparticles. This was caused by the phase difference of TiO2.
        4,000원
        3944.
        2012.07 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        Li1+xAlxTi2-x(PO4)3(LATP) is a promising solid electrolyte for all-solid-state Li ion batteries. In this study, LATP isprepared through a sol-gel method using relatively the inexpensive reagents TiCl4. The thermal behavior, structuralcharacteristics, fractured surface morphology, ion conductivity, and activation energy of the LATP sintered bodies areinvestigated by TG-DTA, X-ray diffraction, FE-SEM, and by an impedance method. A gelation powder was calcined at 500oC.A single crystalline phase of the LiTi2(PO4)3(LTP) system was obtained at a calcination temperature above 650oC. The obtainedpowder was pelletized and sintered at 900oC and 1000oC. The LTP sintered at 900~1000oC for 6 h had a relatively low apparentdensity of 75~80%. The LATP(x=0.3) pellet sintered at 900oC for 6 h was denser than those sintered under other conditionsand showed the highest ion conductivity of 4.50×10−5S/cm at room temperature. However, the ion conductivity of LATP(x=0.3) sintered at 1000oC decreased to 1.81×10−5S/cm, leading to Li volatilization and abnormal grain growth. For LATPsintered at 900oC for 6 h, x=0.3 shows the lowest activation energy of 0.42eV in the temperature range of room temperatureto 300oC.
        4,000원
        3945.
        2012.07 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        The dielectric properties and phase transformation of poled <001>-oriented Pb(Mg1/3Nb2/3)O3-x%PbTiO3(PMN-x%PT) single crystals with compositions of x=20, 30, and 35mole% are investigated for orientations both parallel andperpendicular to the [001] poling direction. An electric-field-induced monoclinic phase was observed for the initial poled PMN-30PT and PMN-35PT samples by means of high-resolution synchrotron x-ray diffraction. The monoclinic phase appears from−25oC to 100oC and from −25oC to 80oC for the PMN-30PT and PMN-35PT samples, respectively. The dielectric constant (ε)-temperature (T) characteristics above the Curie temperature were found to be described by the equation(1/ε−1/εm)1/n=(T−Tm)/C, where εm is the maximum dielectric constant and Tm is the temperature giving εm, and n and C are constants that changewith the composition. The value of n was found to be 1.82 and 1.38 for 20PT and 35PT, respectively. The results of meshscans and the temperature-dependence of the dielectric constant demonstrate that the initial monoclinic phase changes to a singledomain tetragonal phase and a to paraelectric cubic phase. In the ferroelectric tetragonal phase with a single domain state, thedielectric constant measured perpendicular to the poling direction was dramatically higher than that measured in the paralleldirection. A large dielectric constant implies easier polarization rotation away from the polar axis. This enhancement is believedto be related to dielectric softening close to the morphotropic phase boundary.
        3,000원
        3946.
        2012.07 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        Recently, the demand for the miniaturization of printed circuit boards has been increasing, as electronic devices have been sharply downsized. Conventional multi-layered PCBs are limited in terms their use with higher packaging densities. Therefore, a build-up process has been adopted as a new multi-layered PCB manufacturing process. In this process, via-holes are used to connect each conductive layer. After the connection of the interlayers created by electro copper plating, the via-holes are filled with a conductive paste. In this study, a desmear treatment, electroless plating and electroplating were carried out to investigate the optimum processing conditions for Cu via filling on a PCB. The desmear treatment involved swelling, etching, reduction, and an acid dip. A seed layer was formed on the via surface by electroless Cu plating. For Cu via filling, the electroplating of Cu from an acid sulfate bath containing typical additives such as PEG(polyethylene glycol), chloride ions, bis-(3-sodiumsulfopropyl disulfide) (SPS), and Janus Green B(JGB) was carried out. The desmear treatment clearly removes laser drilling residue and improves the surface roughness, which is necessary to ensure good adhesion of the Cu. A homogeneous and thick Cu seed layer was deposited on the samples after the desmear treatment. The 2,2'-Dipyridyl additive significantly improves the seed layer quality. SPS, PEG, and JGB additives are necessary to ensure defect-free bottom-up super filling.
        4,000원
        3947.
        2012.07 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        Two types of nanoclusters, termed Cluster (1) and Cluster (2) here, both play an important role in the age-hardening behavior in Al-Mg-Si alloys. Small amounts of additions of Cu and Ag affect the formation of nanoclusters. Two exothermic peaks were clearly detected in differential scanning calorimetry(DSC) curves by means of peak separation by the Gaussian method in the base, Cu-added, Ag-added and Cu-Ag-added Al-Mg-Si alloys. The formation of nanoclusters in the initial stage of natural aging was suppressed in the Ag-added and Cu-Ag-added alloys, while the formation of nanoclusters was enhanced at an aging time longer than 259.2 ks(3 days) of natural aging with the addition Cu and Ag. The formation of nanoclusters while aging at 100˚C was accelerated in the Cu-added, Ag-added and Cu-Ag-added alloys due to the attractive interaction between the Cu and Ag atoms and the Mg atoms. The influence of additions of Cu and Ag on the clustering behavior during low-temperature aging was well characterized based on the interaction energies among solute atoms and on vacancies derived from the first-principle calculation of the full-potential Korrinaga-Kohn-Rostoker(FPKKR)-Green function method. The effects of low Cu and Ag additions on the formation of nanoclusters were also discussed based on the age-hardening phenomena.
        4,000원
        3948.
        2012.06 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        The production of functional activated carbon materials starting from inexpensive natural precursors using environmentally friendly and economically effective processes has attracted much attention in the areas of material science and technology. In particular, the use of plant biomass to produce functional carbonaceous materials has attracted a great deal of attention in various aspects. In this study the preparation of activated carbon has been attempted from rice husks via a chemical activation-assisted microwave system. The rice husks were milled via attrition milling with aluminum balls, and then carbonized under purified N2. The operational parameters including the activation agents, chemical impregnation weight ratio of the calcined rice husk to KOH (1:1, 1:2 and 1:4), microwave power heating within irradiation time (3-5 min), and the second activation process on the adsorption capability were investigated. Experimental results were investigated using XRD, FT-IR, and SEM. It was found that the BET surface area of activated carbons irrespective of the activation agent resulted in surface area. The activated carbons prepared by microwave heating with an activation process have higher surface area and larger average pore size than those prepared by activation without microwave heating when the ratio with KOH solution was the same. The activation time using microwave heating and the chemical impregnation ratio with KOH solution were varied to determine the optimal method for obtaining high surface area activated carbon (1505 m2/g).
        4,000원
        3949.
        2012.06 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        Co3O4, Al2O3 and Co3O4/Al2O3 mesoporous powders were prepared by a sol-gel method with starting matierals ofaluminum isopropoxide and cobalt (II) nitrate. A P123 template is employed as an active organic additive for improving thespecific surface area of the mixed oxide by forming surfactant micelles. A transition metal cobalt oxide supported on aluminawith and without P123 was tested to find the most active and selective conditions as a heterogeneous catalyst in the reactionof styrene epoxidation. A bBlock copolymer-P123 template was added to the staring materials to control physical and chemicalproperties. The properties of Co3O4/Al2O3 powder with and without P123 were characterized using an X-ray diffractometer(XRD), a Field-Emission Scanning Electron Microscope (FE-SEM), a Bruner-Emmertt-Teller (BET) surface analyzer, and 27AlMAS NMR spectroscopy. Powders with and without P123 were compared in catalytic tests. The catalytic activity and selectivitywere monitored by GC/MS, 1H, and 13C-NMR spectroscopy. The performance for the reaction of epoxidation of styrene wasobserved to be in the following order: [Co3O4/Al2O3 with P123-1173 K>Co3O4/Al2O3 with P123-973 K>Co3O4-973K>Co3O4/Al2O3-973 K>Co3O4/Al2O3 with P123-1473 K>Al2O3-973 K]. The existence of γ-alumina and the nature of thesurface morphology are related to catalytic activity.
        4,000원
        3950.
        2012.06 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        Metal foam has many excellent properties, such as light weight, incombustibility, good thermal insulation, sound absorption, energy absorption, and environmental friendliness. It has two types of macrostructure, a closed-cell foam with sealed pores and an open-cell foam with open pores. The open-cell foam has a complex macrostructure consisting of an interconnected network. It can be exploited as a degradable biomaterial and a heat exchanger material. In this paper, open cell Mg alloy foams have been produced by infiltrating molten Mg alloy into porous pre-forms, where granules facilitate porous material. The granules have suitable strength and excellent thermal stability. They are also inexpensive and easily move out from open-cell foamed Mg-Al alloy materials. When the melt casting process used an inert gas, the molten magnesium igniting is resolved easily. The effects of the preheating temperature of the filler particle mould, negative pressure, and granule size on the fluidity of the open cell Mg alloy foam were investigated. With the increased infiltration pressure, preheat temperature and granule sizes during casting process, the molten AZ31 alloy was high fluidity. The optimum casting temperature, preheating temperature of the filler particle mould, and negative pressure were 750˚C, 400-500˚C, and 5000-6000 Pa, respectively, At these conditions the AZ31 alloy had good fluidity and castability with the longest infiltration length, fewer defects, and a uniform pore structure.
        4,000원
        3951.
        2012.06 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        This study evaluated the enhancement of microstructural and mechanical properties of a cross rolled Ni-10Cr alloy, comparing with conventionally rolled material. Cold rolling was carried out to 90% thickness reduction and the specimens were subsequently annealed at 700˚C for 30 min to obtain a fully recrystallized microstructure. Cross roll rolling was carried out at a tilted roll mill condition of 5˚ from the transverse direction in the RD-TD plane. In order to observe the deformed microstructures of the cold rolled materials, transmission electron microscopy was employed. For annealed materials after rolling, in order to investigate the grain boundary characteristic distributions, an electron back-scattering diffraction technique was applied. Application of cold rolling to the Ni-10Cr alloy contributed to notable grain refinement, and consequently the average grain size was refined from 135 μm in the initial material to 9.4 and 4.2 μm in conventionally rolled and cross rolled materials, respectively, thus showing more significantly refined grains in the cross rolled material. This refined grain size led to enhanced mechanical properties such as yield and tensile strengths, with slightly higher values in the cross rolled material. Furthermore, the<111>//ND texture in the CRR material was better developed compared to that of the CR material, which contributed to enhanced mechanical properties and formability.
        4,000원
        3952.
        2012.06 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        Fe/SiO2 core-shell type composite nanoparticles have been synthesized using a reverse micelle process combined with metal alkoxide hydrolysis and condensation. Nano-sized SiO2 composite particles with a core-shell structure were prepared by arrested precipitation of Fe clusters in reverse micelles, followed by hydrolysis and condensation of organometallic precursors in micro-emulsion matrices. Microstructural and chemical analyses of Fe/SiO2 core-shell type composite nanoparticles were carried out by TEM and EDS. The size of the particles and the thickness of the coating could be controlled by manipulating the relative rates of the hydrolysis and condensation reaction of TEOS within the micro-emulsion. The water/surfactant molar ratio influenced the Fe particle distribution of the core-shell composite particles, and the distribution of Fe particles was broadened as R increased. The particle size of Fe increased linearly with increasing FeNO3 solution concentration. The average size of the cluster was found to depend on the micelle size, the nature of the solvent, and the concentration of the reagent. The average size of synthesized Fe/SiO2 core-shell type composite nanoparticles was in a range of 10-30 nm and Fe particles were 1.5-7 nm in size. The effects of synthesis parameters, such as the molar ratio of water to TEOS and the molar ratio of water to surfactant, are discussed.
        4,000원
        3953.
        2012.06 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        In order to improve osseointegration of dental implants with bone we studied an implant with holes inside its body to deliver bioactive materials based on a proposed patent. Bioactive materials can be selectively applied through holes to a patient according to diagnosis and the integration progress. After the bioactive material is applied, bone can grow into the holes to increase implant bonding and also enhance surface integration. In order to improve the concept and study the effect of bioactive material injection on implant integration, design optimization and integration research were undertaken utilizing the finite element method. A 2-dimensional simulation study showed that when bone grew into the holes after the bioactive material was injected, stress vertically distributed in the upper part of the implant was relieved and mild stress appeared at the opening of the injection holes. This confirmed the effect of the bioactive material and the contribution of the injection holes, but the maximum stress increased ten-fold at the opening. In order to reduce the maximum stress, the size, location, and the number of holes were varied and the effects were studied. When bioactive materials formed an interface layer between the implant and the mandible and four holes were filled with cortical and cancellous bones all the stress concentrated opposite to the loading side without holes disappeared. The stresses at the four outlets of the holes was mildly elevated but the maximum stress value was ten-fold greater compared to the case without the bioactive material.
        4,000원
        3954.
        2012.06 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        Hydroxyapatite (HA) is well known as a biocompatible and bioactive material. HA has been practically applied as bone graft materials in a range of medical and dental fields. In this study, two types of dense hydroxyapatite ceramics were prepared from natural bones and synthetic materials. The biocompatibility of HA ceramics for supporting osteoblast cell growth and cytotoxicity using an in vitro MG-63 cell line model were respectively evaluated. Artificial hydroxyapatite shows relative density of 93% with 1-2 μm after sintering, but a hydroxyapatite compact derived from bovine bone has low sintered density of 85% with a small content of MgO. Irrespective of the starting raw materials, both types of sintered hydroxyapatite displayed similar biocompatibility in the tests. FE-SEM observations showed that most MG-63 cells had a stellar shape and formed an intercellular matrix containing fibers on sintered HA. The cells were well attached and grown over the HA surface, indicating that there was no toxicity.
        4,000원
        3955.
        2012.06 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        Bismuth antimony telluride (BiSbTe) thermoelectric materials were successfully prepared by a spark plasma sintering process. Crystalline BiSbTe ingots were crushed into small pieces and then attrition milled into fine powders of about 300 nm ~ 2μm size under argon gas. Spark plasma sintering was applied on the BiSbTe powders at 240, 320, and 380˚C, respectively, under a pressure of 40 MPa in vacuum. The heating rate was 50˚C/min and the holding time at the sintering temperature was 10 min. At all sintering temperatures, high density bulk BiSbTe was successfully obtained. The XRD patterns verify that all samples were well matched with the Bi0.5Sb1.5Te3. Seebeck coefficient (S), electric conductivity (σ) and thermal conductivity (k) were evaluated in a temperature range of 25~300˚C. The thermoelectric properties of BiSbTe were evaluated by the thermoelectric figure of merit, ZT (ZT = S2σT/k). The grain size and electric conductivity of sintered BiSbTe increased as the sintering temperature increased but the thermal conductivity was similar at all sintering temperatures. Grain growth reduced the carrier concentration, because grain growth reduced the grain boundaries, which serve as acceptors. Meanwhile, the carrier mobility was greatly increased and the electric conductivity was also improved. Consequentially, the grains grew with increasing sintering temperature and the figure of merit was improved.
        4,000원
        3956.
        2012.06 구독 인증기관 무료, 개인회원 유료
        염상섭은 신여성을 다룸에 있어 부정적인 시선으로만 일관하던 동시대 많은 작가들에 비하여 조금은 객관적인 시선을 견지하고 있다고 보였다. 신여성에 대한 극도의 혐오를 보인 남성 작가들이 신여성들의 역사적, 사회적 무지를 강조하여 신여성에 대한 부정적 인식을 심어주되 그들에게 아무런 변론의 기회를 주지 않았던 것과 달리 염상섭은 신여성들을 주동인물로 다루면서 오류의 삶에 대한 자기변호의 기회를 주고 있으며 비교적 가까운 거리에서 묘사하고 있기 때문이다. 하지만 거리가 가까워졌다고는 하나 신여성에 대한 작가의 시선이나 이해의 정도는 그렇지 않았음을 간과해서는 안 될 것이다. 염상섭은 남성의 근대성은 긍정하면서도 여성의 근대성에 관하여 매우 소극적이거나 부정적인 태도였다. 그는 여성의 주체적 행보를 주시하기보다 전통적인 여성성을 공고히 견지하며 여성을 극단적으로 이분화하려 하였다. 전통적 아비투스를 답습하고 그 안에 안주하는 여성들을 긍정적으로 보는가 하면 전통적 여성관에서 벗어나고자 하는 여성들을 부정, 그들의 존재를 위기로 담지하였던 것이다. 염상섭의 이런 위기의식은 작품 내에서 작중인물로 하여금 감상적인 토로와 한탄을 빈번하게 사용하는 것으로 나타난다. 연설 장면의 빈번한 활용이나 인물의 비분강개식 토로를 통하여 작가는 당시 사회에 대하여, 또 신여성에 대하여 하고자 하는 말을 지나칠 정도로 직접적으로 표현하고 있다. 다소 미숙한 방식의 글쓰기 방식을 무릅쓰더라도 일제하의 경박한 근대성에 대한 경계 등 작가의 주제의식을 뚜렷이 하고자 하는 의도 때문이라 판단된다. 하지만 염상섭은 당시 부정하고자 하는 모든 부정적 가치를 신여성에게 전가함으로써 이율배반적 근대의식을 보이고 있다. 그의 이러한 극단적 젠더의식은 당시 사회에 진출하려는 여성 지식인을 배제하고자 한 남성 지식인들의 그것에 다름 아니다.
        7,700원
        3957.
        2012.06 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        (3-mercaptopropyl)trimethoxysilane (MPTMS) was used as a silylation agent, and modified silica nanoparticles were prepared by solution polymerization. 2.0 g of silica nanoparticles, 150 ml of toluene, and 20 ml of MPTMS were put into a 300 ml flask, and these mixtures were dispersed with ultrasonic vibration for 60 min. 0.2 g of hydroquinone as an inhibitor and 1 to 2 drops of 2,6-dimethylpyridine as a catalyst were added into the mixture. The mixture was then stirred with a magnetic stirrer for 8 hrs. at room temperature. After the reaction, the mixture was centrifuged for 1 hr. at 6000rpm. After precipitation, 150 ml of ethanol was added, and ultrasonic vibration was applied for 30 min. After the ultrasonic vibration, centrifugation was carried out again for 1 hr. at 6000rpm. Organo-modification of silica nanoparticles with a γ-methacryloxypropyl functional group was successfully achieved by solution polymerization in the ethanol solution. The characteristics of the γ-mercaptopropyl modified silica nanoparticles (MPSN) were examined using X-ray photoelectron spectroscopy (XPS, THERMO VG SCIENTIFIC, MultiLab 2000), a laser scattering system (LSS, TOPCON Co., GLS-1000), Fourier transform infrared spectroscopy (FTIR, JASCO INTERNATIONL CO., FT/IR-4200), scanning electron microscopy (SEM, HITACHI, S-2400), an elemental analysis (EA, Elementar, Vario macro/micro) and a thermogravimetric analysis (TGA, Perkin Elmer, TGA 7, Pyris 1). From the analysis results, the content of the methacryloxypropyl group was 0.98 mmol/g and the conversion rate of acrylamide monomer was 93%. SEM analysis results showed that the organo-modification of ultra-fine particles effectively prevented their agglomeration and improved their dispensability.
        4,000원
        3958.
        2012.06 구독 인증기관 무료, 개인회원 유료
        『The Chinese Recorder and Missionary Journal』에 기고했던 재중 선교사 티모티 리차드, 존 로스, 및 D. Z. 셰필드의 글들은 19세기에 맺어진 서구열강과 중국 간의 조약들, 그 조약에 포함된 선교적 권리들, 그리고 선교사의 향후 태도에 대하여 서로 다른 견해를 보여준다. 리차드는, ‘조약권리’ 중 기독교 선교와 관련된 항목들이 본국 외교부와 중국 관료들에 의해 이행되지 않으면서 더 많은 중국 신자들의 박해가 일어나고 선교에 큰 장애가 되어왔다고 간주하여, 동 권리의 이행 및 법 개정을 위한 외교부의 노력을 주장하였다. 그는 ‘신자들의 종교자유권’, ‘선교사의 내지거주권’, 그리고 박해자의 처벌을 포함하는 ‘신자 및 선교사 보호권’을 강력히 요구하였다. 그의 주장은 선교현장에서 ‘선교의 자유’를 충분히 얻지 못하고 있던 개신교 선교사공동체의 내적인 딜레마를 잘 보여주고 있지만, 또한 그의 제국주의적 서구의 중국침탈에 대한 인식의 결여를 잘 보여준다. 로스는, 선교사들이 서구열강의 억압으로 쥐어짜낸 ‘조약권리’에서 나오는 선교적 권리를 포기하고, 신자들과 비신자간에 일어난 분쟁을 해결하기 위하여 공사관의 권력에 의지하지 말며, 극단적인 박해사건에 개입하되 관리들과의 ‘직접적인 대화’를 통하여 ‘우호적인 방식’으로 문제를 해결할 것을 제안하였다. 그의 견해는 서구 제국주의의 본질을 통찰하고 중국인들의 입장을 고려하고자 하는 것이다. 그 역시 텐진조약이 가져다 준 북부항구의 개방이라는 외교적 조건 안에서 기독교 선교를 수행하는 한계를 안고 있었지만, 선교적 문제해결에서 ‘가장 덜 제국주의적인 방식’의 해결을 제안하였다. 이와 달리, 셰필드는, 기독교선교와 문명의 전파를 위하여 서구국가가 역할을 해야 한다고 역설하였다. 기독교신앙과 진보정신 그리고 우월한 인종을 보유한 서구기독교국가의 선교는 독자적인 가치를 지니며 서구국가들 및 중국의 보호를 받을 만하다고 보았다. 기독교 선교의 방법으로써 말(word)과 힘(power)을 제안하는 셰필드의 견해는 매우 가부장적이며, 나아가 서구제국주의에 대한 무비판적인 태도를 보여준다. 리차드, 로스, 그리고 셰필드는 청말의 동시대에 중국선교사로 일하였지만, 중국의 조약법 및 기독교선교를 위한 조약법의 이행에 대하여 매우 다른 견해를 가졌음을 보여준다.
        9,800원
        3959.
        2012.06 구독 인증기관 무료, 개인회원 유료
        구약성서에는 다양한 정서적 용어가 소개되어 있다. 인격형성에 큰 영향을 끼칠 수 있는 불안, 두려움과 공포, 그리고 분노와 격분 등은 현대 심리학에서도 중요하게 취급되는 정서분야이다. 막연한 상황에서 안전에 대한 위협으로 인해 발생한 불안, 구체적인 위협상황에서 느끼는 두려움과 죽음의 공포, 그리고 자신의 정당성을 주장하는 표현으로 나타나는 분노와 격분 등은 인간 내면의 심리적, 영적 성향과 의도를 드러낸다는 점에서 주목할 만하다.
        7,000원
        3960.
        2012.06 구독 인증기관 무료, 개인회원 유료
        Four small breed dogs presented with various clinical signs, including seizures. Dual-phase computed tomography (CT) angiography of the abdominal region showed early enhancement of the venous system during the arterial phase. This finding is considered a classic indication of hepatic arteriovenous fistula in CT angiography. This case report presents the clinical and diagnostic findings of hepatic arteriovenous fistula in four small breed dogs.
        4,000원