• Proceedings of the Korean Society of Applied Pharmacology
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• 1993.04a
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• pp.106-106
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• 1993

DWC-751은 그람양성 및 음성균주에 대하여 광범위한 항균스펙트럼을 가지는 것으로 나타났다. 그람양성균 S. aureus에 대하여는 cefpirome과 동등하며, cefotaxime 보다 4배, ceftazidime보다 16배 우수하였고 그람음성균에 대하여 DWC-751의 항균력은 cefpirome, cefotaxime보다 2배, ceftazidime보다 4-8배 우수하였다. Ps. aeruginosa에 대한 DWC-751의 항균력은 ceftazidime과 거의 동등한 항균력을 나타내었고, cefpirome보다 2배, cefotaxime보다 4-8배 우수한 항균력을 나타내었다. 임상분리균주 및 ofloxacin 내성균주에 대한 DWC-751의 항균력은 표준균주에 대한 결과와 같이 대조약물보다 우수하였다. 전신감염치료효과에 있어서 Streptococcus pyogenes, Serratia marcescens, Acinetobacter calcoaceticus, Morganella morganii, Proteus mirabilis에 대한 동물실험 결과, ED$_{50}$치에 의한 효능은 cefotaxime 보다 우수하였으며,Enterobacter cloacae, Pseudomonas aeruginosa에 대하여는 ceftazidime과 거의 동등하였다.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2007.04a
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• pp.208-211
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• 2007

Separation Devices have two functions. These two functions are to bond and to separate two bodies. This paper is about separation devices which use explosives to separate their bodies. Explosive bolt is separated with two bodies when the explosives in the body detonated. The good things of explosive bolt are that it has simple operational system and it is made of few parts. But it has side effects; fragment and pyre-shock. To avoid these side effects gas expansion separation(GES) bolt and pressure cartridge actuation separation(PAS) devices are invented. These use pressure to separate their bodies. The pressure is generated when explosives are burned. But the sizes of PAS devices are bigger than explosive bolts. And GES bolt has a mechanically lower bonding ability than that of explosive bolt. When you design separation devices, it is recommended to know operational system and characteristics of separation devices, to design best one.

• The Journal of the Convergence on Culture Technology
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• v.7 no.4
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• pp.85-93
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• 2021

The purpose of this study was to investigate the effect of psycological separation, self-control, college satisfaction of smartphone addiction in nursing students. Data were collected from 201 nursing students in B city and analyzed by t-test, ANOVA, Pearson correlation coefficient, and multiple regression using SPSS/WIN 22.0. The degree of smartphone addiction in nursing students was 2.23±.58. There were significant differences in smartphone addiction with respect to alcohol drinking(t=2.530, p=.012), smoking(t=2.302, p=.022), study-time(t=6.036, p=.001), smartphone average daily using time(t=6.036, p=.001). There was negative correlation between smartphone addiction and self-control(r=-.443, p<.001), college satisfaction(r=-.210, p=.033). The factors affecting smartphone addiction of the study subjects were self-control(𝛽=-.355, p<.001), smartphone average daily using time(𝛽=.231, p<.001), smorking(𝛽=-.132, p=.033), with an explanatory power of 27.5%. Through this research requires the fellow study to determine the factors affecting smartphone addiction of nursing students.

• Journal of the korean veterinary medical association
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• v.17 no.2
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• pp.33-41
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• 1981

뉴캣슬병 바이러스가 발견된지 50여년이 지난 오늘에도 그 발생은 전 세계적으로 광범위하다. NDV가 분리됨으로 백신개발이 이루어져 1930년대말부터 완전하지는 못했으나 그런대로 방역을 맡았으며 그후 개량발전된 백신으로 각국에서 예방접종하고 있으나 여전히 발생하고 있다. NDV는 Paramyxovirus로서 RNA를 가지고 있으며 크기는 $100\~600{\mu}m$ 범위의 크기와 lipoprotein envelope로 쌓여 있다. 분리동정에 이용되는 혈구응집소, neuraminidase의 작용, 용혈성 등 모두 envelope와 관련이 있으며 이와 관련된 연구가 많이 진행되고 있다. NDV가 세포에 침투하는 과정에서 특이한 receptor에 부착하여 envelope의 용해 및 nucleocapsid의 세포속에 침투 등이 밝혀지고 있으며 NDV의 Virion은 RNA의존 RNA 복합체를 가지고 있고 보족 RNA는 바이러스 단백질 및 RNA를 산생하기 위해서 숙주에 의하여 전환을 한다. 1 일령추의 뇌내접종, 정맥내 접종 및 계태 아치사시간 등의 방법으로 Velogenic, Mesogenic Lentogenic type으로 분류하고 감염력에 따라 Virulent 또는 avirulent로 구분된다. 국내에서 분리된 NDV는 현재 Velogenic형으로 분류되고 있으나 앞으로 지역별, 계절별, 감염된 숙주별로 광범위하게 분리하여 국내에서 유행하고 있는 NDV의 성상조사와 특성을 파악 할 필요성이 요청된다.

• Resources Recycling
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• v.6 no.1
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• pp.17-22
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• 1997

An electromagnetic fluidized bed was proposed for the continuous separation of magnetic particles from the fine a admixtures with nonHmagnetic particles. The effects of operating variables on the magnetic fraction in the separated p particles were examined, including superficial gas velocity, mixing fraction of magnetic particles (= 100-mixing fraction of n non-magnetic particles) in the admixture, and electric current supplied to the electwmagnet. It was found that the s separation was possible when a magnetic force formed by the electromagnets works on the magnetic particles over the hydrodynamic force caused by a gas stream for fluidizing the fine admixture.

• Applied Biological Chemistry
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• v.41 no.1
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• pp.13-17
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• 1998

To improve extraction of insoluble proteins and functional properties of abolished proteins by protease. It was found that the optimum pH, optimum temperature, optimum treatment time and optimum unit of enzyme far extraction of protein were pH 9.0, $60^{\circ}C$, 8 hrs, 40 units. The foaming capacity and foaming satbility of sesame meal protein after treatment of enzyme were especially higher than control. The emulsion capacity and emulsion satbility of sesame meal protein were higher than control. Coil absorption as well as water absorption capacities of sesame meal protein were higher than control.

• Journal of the Korean Society of Food Science and Nutrition
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• v.18 no.2
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• pp.195-198
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• 1989

The water binding capacity (WBC) of hoe plasma protein was investigated. The centrifugal condition for optimal separation of plasma from hog blood was fixed at 1400 g-force. The WBC of 5%-plasma-protein-solution eel increased rapidly between pH 6 and 7 but gradually after pH 7 at $85^{\circ}C$ for 30 min. The higher heating temperature demonstrated the higher WBC of 5%-plasma-protein-solution gel at pH 7 within short period of time. The WBC of 5%-plasma-protein-solution gel increased rapidly at the beginning of heating. The WBC per gram of plasma protein at pH 7 and $85^{\circ}C$ for 30 min decreased as protein concentration of the plasma solution increased.

• Journal of Korean Society of Steel Construction
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• v.9 no.4 s.33
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• pp.625-635
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• 1997

The base isolation technique and its benefits in reducing the transmitted earthquake energy into a structure have gained increasing recognition during the last two decades. Unfortunately, the current available design procedures, especially for base-isolated bridges, seem inadequate and too restrictive. As a result, practical design procedure still relies upon a series of deterministic time history analyses. In this study, the evaluation of the possibility of the normal mode method to predict the nonlinear seismic responses of base isolated bridges has been performed. The applicability has been examined through the numerical approach with isolator's elastic or plastic states of the base isolated bridges. Numerical results show that the 1st. mode period and the various responses are varied with the state but are conversed. And, the result show that the normal mode method is applicable to predict the seismic responses and to design the babe isolated bridge. Various analysis method to bridges with bilinearized hysteresis isolator and various pier heights are evalulated.

• Journal of Animal Environmental Science
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• v.2 no.1
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• pp.79-86
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• 1996

Solid/Liquid(S/L) separation is crucial for biological treatment of animal wastewater. Liquid portion from S/L separation has less BOD-load and proper post-strip treatment can be obtained. Screen or declined sieve was normally used to separate the solid parts. For better separating efficiency a vibration and a cylindrical separator were constructed and tested. The results are summarized as follows; Solids removal efficiency and moisture content of separated solid were 15~26% and 85~88%, respectively for the vibration separator. for the cylindrical separator, solid removal efficiency and moisture content of solid were 16~39% and 86~89%, respectively. The greatest amount of drymatter was obtained when operating vibration separator with 10$^{\circ}$ inclination and 100% vibrating power. For the cylindrical separator maximum efficiency was obtained with 40 rpm and 19$^{\circ}$ inclination. The vibration and the cylindrical separator have shown 21% and 26% in BOD removal, respectively. These two types of separator were proved to be applicable methods for animal wastewater separation.

• Journal of Life Science
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• v.12 no.2
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• pp.200-207
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• 2002

This study was carried out to isolate of antagonistic bacterium against Pythium ultimum and Rhizoctonia solani AG-4, causal pathogens of vegetables damping-off. Total of 600 strains were isolated from soil and plait roots. The isolates were screened for antagonism against Pythium ultimum and Rhizoctonia solani AG-4. One strain, named YJ-37, was sellected for detained study among those microoganisms screened. It was identified as Bacillus ehimensis based on morphological and physiological characterisitics according to the Bergey's mannual of systematic bacteriology, Sherlock system of Microbial ID Inc. and 16S rDNA sequences methods. Furthermore Bacillus ehimensis YJ-37 showed antifungal activities against Alternaria altrata, Collectotrichum gloeosporioides, Didymella bryoniae, Fusarium moniliforme, Fusarium oxysporum, F. oxysporum cucumerinum, F. oxysporum niveum, Gloeosporium sp., Glomerella sp., G. cingulata, G. lagenaria, Penicillium digitatum, P. italicum, Phytophthora capsici, Sclerotinia sclerotiorum, and Stemprhylium solani.