• Proceedings of the Korean Radioactive Waste Society Conference
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• 2016.05a
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• pp.107-108
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• 2016

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2012.05a
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• pp.93-94
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• 2012

• The Proceeding of the Korean Institute of Electromagnetic Engineering and Science
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• v.12 no.3
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• pp.25-34
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• 2001

There are many kinds of dielectric materials in microwave dielectric filters for mobile telecomunication. But It is need to new dielectric materials for IMT200O, Bluetooth, wireless LAN to miniaturize the dielectric filters. These kinds of materials should have high dielectric constants, high Q, and low firing sintering temperature(<900˚C ). Multilayer monolithic dielectric filters are manufactured by BiNb04, dielectric ceramics cofired at 875˚C .

• Microbiology and Biotechnology Letters
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• v.13 no.3
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• pp.315-319
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• 1985

Delta-endotoxin crystals of B. thuringiensis var. kurstari and B. thuringiensis var. israelensis were purified by NaBr density gradient centrifigation and the wet weight of the BTK endotoxin was approximately 23.79％ of the cell wet weight and that of BTI was 25％. The shape of BTK crystal was bipyramidal, whose size was 1.7${\mu}{\textrm}{m}$ $\times$ 0.9${\mu}{\textrm}{m}$ and that of BTI was a spheroid, whose size was about 1.6$\times$0.45${\mu}{\textrm}{m}$. The molecular weight of BTK crystal protein was approximately 134,000 daltons and that of BTI was about 128,000 daltons.

• Korean Journal of Biological Psychiatry
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• v.2 no.2
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• pp.237-247
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• 1995

The finding of contrasting results regarding an association between schizophrenia and the Mlul polymorphism site in the dopamine $D_3$ receptor gene prompted us to study the distribution of this palymorphism in Korean schizophrenic patients and controls. The author's approach was case-control study. Schizophrenic patients (n=66) and controls (n=76) were examined by case-control study for distribution of the Mlul polymorphism of the dopamine $D_3$ receptor gene in Korean population to minimize the effect of racial differencies in gene frequencies. The frequency of the allele 1 in schizophrenic patients and controls was 0.66 and 0.76, respectively. There was no significant differencies in the frequency of the allele 1 between schizophrenic patients and controls ($x^2$=3.07, p>.05), and between positive and negative schizophrenic patients ($x^2$=1.02, p>.05). We present here the evidence of a lack of alleic association between the Mlul polymorphism of the dopamine $D_3$ receptor gene and Korean schizophrenic patients and also report no increased homozygosity for the Mlul polymorphism. The assumption that the dopamine $D_3$ receptor gene has a predisposing role in schizophrenia was not supported by this case-control study. Although, the possibility that this gene has a minor gene effects in the etiology of schizophrenia cannot be excluded because of the intrinsic limitations of the methods of analysis and number of subjects in our study.

• Microbiology and Biotechnology Letters
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• v.15 no.2
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• pp.95-97
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• 1987

The protoplast formation of Streptomyces mitakaensis was monitored with scanning electron microscopy and transmission electron microscopy. The normal cells formed regular mycelium and spore, and their cell wall and cell membrane appeared to be normal, but the cell wall of the lysozyme treated cells (1 mg/$m\ell$) was damaged, which was finally disappeared from cells to become protoplast in 30 to 60 minutes.

• ICROS
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• v.16 no.1
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• pp.51-55
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• 2010

제어 및 로봇 응용에서 이동체의 위치, 속도, 그리고 자세 정보를 획득하는 기능은 매우 중요한 여할을 수행한다. 위치, 속도, 그리고 자세 정보는 통틀어 항법정리라 통칭되며 전파센서, 영상센서, 혹은 관성센서 등 다양한 센서들의 조합에 의하여 획득될 수 있다. 항법정보의 획득에 있어서 특히 관성센서는 다양한 센서들의 조합에 있어서 가장 중요한 역할을 수행하는데 이는 관성센서가 다른 센서들과는 달리 주변의 조명 환경, 전파환경, 그리고 고의적인 외란에 강인한 특성을 지니며, 이동체의 빠른 운동을 세밀하게 수치화하여 표현할 수 있기 때문이다. 본 고에서는 이와 같은 장점을 지닌 관성센서의 출력을 정확하게 다루기 위해 명확한 이해가 요구되는 코리올리 효과에 대하여 살펴보고자 한다. 코리홀리 효과는 이동체의 운동을 회전하는 좌표계에서 관측할 경우 발생하는 특이한 현상에 해당되며 관성센서를 다루기 위한 준비 과정에서 많은 입문자들이 어려움을 가지는 부분으로 이해된다.

• Journal of Life Science
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• v.17 no.11
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• pp.1477-1481
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• 2007

The mating systems of natural populations of Vicia tetrasperm in Korea were determined using allozyme analysis. The result suggests that V. tetrasperm is low rates of outcrossing or mix-mating outcrossing (self-fertilization, s < 0.5). At the population levels, the values of inbreeding coefficient of ten populations in Korea varied from 0.131 to 0.176, giving an average 0.154. For ten natural populations, multi-locus estimates of outcrossing (tm) was 0.333 across fifteen polymorphic loci, with individual population values ranging from 0.269 to 0.423. The differences between the tm and ts values were not close to zero (tm - ts > 0.154), indicating that biparental inbreeding was significant in the loci. The reason for relatively low outcrossing rates of some populations could be attributed to extensive consanguineous mating and isolation of flowering mature plants. Although heterozygote excess was observed in one natural population, most populations exhibited varying degrees of inbreeding and heterozygotes deficit. Thus, selection against homozygotes operated in the progeny populations throughout the life cycle.

• The Korean Journal of Malacology
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• v.28 no.1
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• pp.13-19
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• 2012

To determine the status of Korean molluscs infection and relation with climate change of Korean peninsula, references were reviewed. Wild animals serve as intermediate, reservoirs and paratenic hosts to zoonotic parasites of human beings. Trematode are common parasites of molluscs and almost all trematodes infect mollusks as the first host in the life cycle, and most have a complex life cycle involving other hosts. The significance of auxiliary hosts to the ecology of the parasite has not been proper discussion. There is increasing concern as to the impact of climate change on the epidermiology of many parasitic diseases. A total of 21 species for snail transmitted parasites from Korean molluscs has been reviewed. Among them, 15 species was aquatic mollusks and 6 species for marine mollusks. Maximum infections belonged to Semisulcospira livertina had 11 kind of parasite pathogenic organisms, including Paragonimus westermani, Metagonimus yokogawai, Centrocestus armatus, Notocotylus magniovatus, Centrocestus formosanus, incerte cercaria, nipponensis cercaria, Yoshidae cercaria, cristata cercaria, innominatum cercaria and Metagonimus sp. And 11 in Parafossarulus manchouricus including Clonorchis sinensis, Asymphylodora japonica, Cyathocotyle orientalis, Exorchis oviformis, Notocotylus attenuatus, Echinochasmus japonicus, Loxogenes liberum, Cercariae of Loxogenes liberum Type I, Cercariae of Loxogenes liberum Type II, Furcocercus cercariae (Family Sanguincolidae) and Cercaria of Mucobucaris, 10 in Semisulcospira sp. including Paragonimus westermani, Metagonimus yokogawai, Centrocestus armatus, Echinochasmus redioduplicatus, Notocotylus magniovatus, Cercaria incerte, Cercaria nipponensis, Cercaria yoshidae, paludinarum cercaria and Metagonimus sp., 7 in Koreanomelania globus including Pseudexorchis major, Cercaria of parapleurolophocercous type, Metagonimus sp. (A & B), Cercaria nipponensis, Cercaria inserta and Cercaria yoshidae. Also, Tapes philippinarum have 3 pathogenic organisms including Cercariae tapidis, Cercariae furcocercus and Parvatrema sp. In particular, under climatic extremes such as floods and drought, aquatic molluscs may play a more prominent role in parasite transmission in the future.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.5 no.1
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• pp.26-32
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• 2012

This paper presents a metamaterial absorber unit sell structure with four-element electric-LC resonators (ELC). In order to enhance the operating bandwidth of the proposed absorber unit cell two pairs of ELC resonators with a different size are used. The proposed unit cell shows negative permittivity and permeability when the electric field is parallel to the capacitive gap and the magnetic field is normal to the plane of ELC resonator. The simulated results show peak absorbance over 90% at two frequencies of 8.53 and 9.08 GHz, respectively.