• Proceedings of the KIEE Conference
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• 1996.07c
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• pp.1725-1727
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• 1996

Brewster angle microscopy(BAM) makes it possible to measure domains of Langmuir films. Especially, formation and phase transition of the PAAS Langmuir monolayers from a gas phase to a solid phase at the air-water interface were observed by the use of BAM. And also we observed the comparative images of films deposited at each phase. The UV/visible absorption spectra of this films showed molecular intensity and aggregation at each state. The electrical properties of this material were measured by current-voltage(I-V) characteristics.

• Journal of applied mathematics & informatics
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• v.29 no.1_2
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• pp.211-225
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• 2011

In this paper, a class of bi-directional associative memory (BAM) fuzzy cellular neural networks with distributed delays and impulses is formulated and investigated. By employing an integro-differential inequality with impulsive initial conditions and the topological degree theory, some sufficient conditions ensuring the existence and global exponential stability of equilibrium point for impulsive BAM fuzzy cellular neural networks with distributed delays are obtained. In particular, the estimate of the exponential convergence rate is also provided, which depends on the delay kernel functions and system parameters. It is believed that these results are significant and useful for the design and applications of BAM fuzzy cellular neural networks. An example is given to show the effectiveness of the results obtained here.

• 한국정보디스플레이학회:학술대회논문집
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• 2009.10a
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• pp.235-238
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• 2009

BaMg$Al_{10}O_{17}$ (BAM) co-doped with $Eu^{2+}$ and $Mn^{2+}$ was synthesized in a solid-state reaction and their luminescence properties were investigated as functions of the concentrations of the sensitizer and activator. BAM:$Eu^{2+}$ had a broad blue emission band at 450 nm and BAM:$Mn^{2+}$ exhibited green emission at 514 nm. The energy transfer from $Eu^{2+}$ to $Mn^{2+}$ was mainly of the resonance-type via an electric dipole-quadrupole interaction. Additionally, the addition of various fluxes such as $AlF_3$ and $BaF_2$ in the synthesis improves the moist and thermal stability. This is particularly important for the phosphor in white light emitting diodes (LEDs).

• Proceedings of the Materials Research Society of Korea Conference
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• 2001.11a
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• pp.96-96
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• 2001

• Korean Journal of Microbiology
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• v.31 no.2
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• pp.123-128
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• 1993

Genes for dinitrogenase reductase (nifH) and dinitogenase a subunit (nifD) were found to be located on 7.9 kb of EcoRI, 6.5 kb of Sail, 7.3 kb of HindlII and 4.4 kb of Pstl fragments of the genomic blot of Rhizobium sp. SNU003. a symbiotic strain from root nodule of Canavalia lineata. Nine recombinant phage nif-clones were selected from the genomic library constructed by using EMBL-3 BamHI arms of bacteriophage lambda. Among them. Rnif-6 had insert DNA of 15.3 kb. in which 7.6 kb of BamHI!SacI fragment contained nifHD region. Therefore, the 7.6 kb fragment was subcloned into pUC19 and partial restriction map was constructed. As the results, nifH and nifD were found to be located continuously on 4.5 kb of BamHI/BglIl in the genome of Rhizobium sp. SNU003 strain.

• Proceedings of the Materials Research Society of Korea Conference
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• 2002.05a
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• pp.147-147
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• 2002

• Proceedings of the Korea Society of Information Technology Applications Conference
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• 2007.11a
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• pp.96-96
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• 2007

• Applied Chemistry for Engineering
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• v.20 no.5
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• pp.565-569
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• 2009

Nano-sized green and blue phosphor powders were synthesized by liquid phase method to confirm the size and morphology. By using that process, the particle sizes of green and blue phosphor particles were 80 nm and 60 nm, respectively. The characteristic comparison of $Zn_2SiO_4$ : Mn and BAM : Eu was carried out and as a result, $Zn_2SiO_4$ : Mn powders showed an higher PL performance compared to BAM : Eu.

• Development and Reproduction
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• v.27 no.1
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• pp.39-46
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• 2023

Pumilio (Pum) is an RNA-binding protein and translational repressor important to diverse biological processes. In the Drosophila ovary, Pum is expressed in female germline stem cells (GSCs), wherein it acts as an intrinsic stem cell maintenance factor via repressing target mRNAs that are as yet mostly unknown. Pum recognizes the Pum binding sequence (PBS) in the mRNA 3'UTR through its C-terminus Puf domain. Translational repression is mediated through its N-terminal domain, but the molecular mechanism remains largely unknown. We previously showed that Bag-of-marbles, a critical differentiation-promoting factor of female GSCs, physically interacts with the N-terminus of Pum. We further showed that this interaction is critical to Bam inhibition of Pum repressive action in cultured cells, but the physiological relevance was not addressed. Here we design an in vivo GFP translational reporter bearing the PBS in its 3'UTR and show that GFP expression is reduced in cells wherein Pum is known to be active. Furthermore, we demonstrate in pum mutant ovary that this GFP repression requires Pum, and also that the sensor faithfully monitors Pum activity. Finally, we show that forced expression of Bam inhibits Pum-mediated repression, validating that Bam inhibits Pum activity in vivo.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2003.07b
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• pp.938-941
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• 2003

It is well known that the state of existence of molecules on the surface of water changes during compression of the molecules. Electric methods, such as measurement of the surface potential or displacement current are also useful for investigating dynamic changes of molecular state on the water surface during compression and Transformation of molecular film occurs only usually in air-water interface, 2 dimensions domain's growth and crash are achieved. Organic thin film that consist of growth of domain can understand correct special quality of accumulation film supplying information about fine structure and properties of matter of device observing information and so on that is surface forward player and optic enemy using AFM one of SPM application by nano electronics. In this paper Langmuir (L) that is one of basis technology to manufacture of organic matter device using biology material PBDG that is kind of polypeptide that have biology adaptedness. The Experiment method used ${\pi}-A$ isotherm and BAM(Brewster Angle Microscopy), using the BAM, we can to the molecular orientation of monolayer on the water surface and directly see the morphology of the films on water subphase as well as that of the films.