Hyunjeong Park

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The proprotein convertase subtilisin/kexin (PCSKs), a family of subtilisin-like proteases, is the processing enzymes for the activation of many hormone precursors. The present study was designed to identify the PCSK isoform expressed in the ovary and to examine its expression in gonadotropin-stimulated rat ovary. Northern blot analysis of ovaries obtained(More)
In this paper, a low-cost, compact form factor UWB impulse transmitter module is presented for impulse radio communication and radar. It consists of an impulse generator on chip, a compact UWB band pass filter (BPF) for impulse shaping, an amplifier in pakage, and a printed planar UWB antenna on board. The small BPF which has a low insertion loss is(More)
Corticotropin releasing hormone (CRH) is a major regulator of the stress response. This study examined whether CRH regulates interleukin-18 expression on microglia, BV2. Our data show that CRH enhanced IL-18 expression and significantly induced the secretion of functional IL-18 protein. Furthermore, CRH induced IL-18 production could be blocked by(More)
NGFI-B is an immediate-early gene that encodes an orphan nuclear receptor. In the rat ovary, the preovulatory surge of LH induces NGFI-B expression in granulosa cells of preovulatory follicles, reaching a peak within 1 h and declining to control levels at 6 h. The LH-stimulated NGFI-B expression is abolished by alpha-amanitin, but superinduced by(More)
The co-modeling and co-simulation results about the package and on-chip power/ground network have been demonstrated. The inevitable parallel resonance peak, due to the inductive parasitic on the package and on-chip decoupling capacitor, was analyzed in frequency domain. Subsequently, the co-design procedure for the resonant free power/ground network was(More)
In this report, we describe a Korean patient with May-Hegglin anomaly from a mutation of the MYH9 gene. The proband was a 21-year-old man with thrombocytopenia. He did not have a bleeding tendency. His neutrophil count was normal at 7490/mm³; however, the neutrophils contained abnormal basophilic inclusions in their cytoplasm. The platelet count was(More)
When categorical ordinal item response data are collected over multiple timepoints from a repeated measures design, an item response theory (IRT) modeling approach whose unit of analysis is an item response is suitable. This study proposes a few longitudinal IRT models and illustrates how a popular compensatory multidimensional IRT model can be utilized to(More)
&ULTRAWIDEBAND (UWB) WIRELESS communication systems are emerging as a promising solution for high-data-rate and short-distance wireless data transmission. The US Federal Communications Commission (FCC) has defined a UWB system as one whose fractional bandwidth is more than 20% or whose absolute bandwidth is wider than 500 MHz between 3.1 GHz and 10.6 GHz. 1(More)