• Journal of Korean Neurosurgical Society
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• v.54 no.2
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• pp.132-135
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• 2013

The small pituitary mass was incidentally found in 40-years-old women with renal cell carcinoma. The endocrinological and ophthalmological evaluation revealed no deficit and the short-term follow-up was recommended. In 6 months later, the visual disturbance was reported and the size of mass was increased. The tumor was removed totally via the trans-sphenoid approach. The post-operative endocrinological insufficiency was not noticed. During one year of follow-up period, there was no evidence of recurrence without adjuvant radiotherapy. The clinical features of pituitary metastasis from renal cell carcinoma were similar to those of pituitary adenoma. The possibility of pituitary metastasis should be kept in mind in patients with sellar mass and renal cell carcinoma.

• International Journal of Human Ecology
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• v.3 no.1
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• pp.37-54
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• 2002

This study examines longitudinal patterns of financial kin support and welfare given to single mother families using life table techniques. Drawing on the 1985-1993 Panel Study of Income Dynamics(PSID), I followed 560 single mothers from the time they began a single motherhood spell. About 30 percent of these single mothers received financial support from relatives, and 40 to 50 percent received AFDC and Food Stamps, respectively. Results indicate that kin support is more likely to be given in a transitional period and tends to decrease over time. In comparison, receiving welfare appears positively time-dependent.

• IMMUNE NETWORK
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• v.13 no.2
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• pp.43-54
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• 2013

Over the past 40 years, flow cytometry has emerged as a leading, application-rich technology that supports high-resolution characterization of individual cells which function in complex cellular networks such as the immune system. This brief overview highlights advances in multiparameter flow cytometric technologies and reagent applications for characterization and functional analysis of cells modulating the immune network. These advances significantly support highthroughput and high-content analyses and enable an integrated understanding of the cellular and molecular interactions that underlie complex biological systems.

• Asian Pacific Journal of Cancer Prevention
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• v.16 no.6
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• pp.2547-2553
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• 2015

Purpose: The present study concerns the effectiveness of an educational intervention for improving knowledge, attitudes and practices (KAP) of breast cancer early detection among target group women (TGW) in the district of Gampaha, Sri Lanka. Materials and Methods: The study was a community-based intervention. Two medical officer of health areas in Gampaha district were selected using random sampling as intervention (IA) and control (CA). Public health midwives (PHMs) in the IA were exposed to the educational intervention first, conducted the same among the TGW through PHMs. KAP was assessed using an interviewer- administrated questionnaire among 260 TGW from each area selected using cluster sampling before and six months after the intervention. Results: The overall median scores for KAP among TGW in IG increased significantly from pre intervention level of 54% (IQR: 46-59%), 50% (IQR: 41-59%), and 0% (IQR: 0-20%) to post intervention level of 77% (IQR: 72-82%), 68% (IQR: 59- 76 %) and 40% (IQR: 20-60%) respectively. In CG, overall median scores for KAP remained almost the same at pre intervention 54% (IQR:44-59%), 50% (IQR:36-59%) and 0% (IQR: 0-20%) and post intervention 54% (IQR:46-59%), 50% (IQR:36-64%) and 0% (IQR: 0-20%) respectively. Conclusions: The educational intervention was found to be effective.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.24 no.8
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• pp.622-626
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• 2011

Lead-free piezoelectric ceramics with the composition of $(Na_{0.54}K_{0.46})_{0.96}Li_{0.04}(Nb_{1-0.10-x}Ta_{0.10}Sb_x)O_{3}$ (x= 0~8 mol%) were fabricated by nomal sintering at $1,090^{\circ}C$ for 5 h. the phase structure, microstructure and electrical properties were investigated with a emphasis on the influence of the Sb content. All samples exhibit a single perovskite phase over the whole compositional range. For the ceramics with x= 4 [mol%], two phase transitions are observed at $75^{\circ}C$ and $366^{\circ}C$, corresponding to the phase transitions of orthorhombic to tetragonal (To-t) and tetragonal to cubic (Tc), respectively. high electrical properties of $d_{33}$= 210.83 pC/N, kp= 40%, ${\varepsilon}_r$= 1,091.35, $\rho$= 4.54 g/$cm^2$ were obtained from the specimen with x= 4 [mol%], which suggests that the composition ceramics is a promising lead-free piezoelectric material.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.39 no.6
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• pp.26-33
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• 2002

In this paper, a new four-quadrant MOS analog multiplier Is proposed using the quarter-square technique, which is based on the quadratic characteristics of MOS transistor operating in the saturation region and the difference operation of a source-coupled differential circuits. The proposed circuit has been fabricated in a p-well CMOS process. The multiplier achieves a total harmonic distortion of less than 1 percent for the both input ranges of 50 percent of power supply, a -3㏈ bandwidth of 30㎒ a dynamic range of 81㏈ and a power consumption of 40㎽. The active chip area is 0.54㎟. The supposed multiplier circuit is simple and adjust high frequency application because one input signal transfer output by one transistor.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.54 no.5
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• pp.714-723
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• 2021

This study investigated the quality characteristics of anchovy Engraulis japonicus sauce added with onion to improve flavor, reduce salinity, and enhance the antioxidative activity. 4 samples were prepared to find the proper amount of onion, including a control group without onion and 3 samples with different amounts of onion: 10% (Fs-10), 20% (Fs-20), and 40% (Fs-40). The samples were collected at intervals of 15 days while fermenting at 25℃ for 60 days. As the amount of added onion increased, the browning index decreased, and the flavor of anchovy sauce was enhanced. The composition of amino acids showed high content of glutamate and alanine that can improve the overall taste. In the free radical scavenging activity test, the Fs-40 group showed the highest value, 74.72%, compared to 10.98% of the control in the antioxidative activity. When evaluating overall preference such as color, fishy smell, flavor with richness, and overall acceptability, the control was rated the lowest, while the Fs-40 was rated the highest and was recognized for its overall excellence. Adding onion not only reduced salinity and increased antioxidant activity but also improved overall sensory properties by adding richness and minimizing fishy smell.

• The Transactions of the Korean Institute of Electrical Engineers D
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• v.54 no.2
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• pp.116-123
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• 2005

Chirp spread spectrum method using both time and frequency component is fit to time varying channel such as powerline channel. The used chirp symbol based on the CEBus standard is the unit symbol which sweeps from 100kHz to 380kHz over a 25㎲. To evaluate the performance of between Chirp-SS and DSSS, we measured the bit error rate under Gaussian channel. Simulation result is shown that Chirp-SS has a about 3[dB] gain of SNR than DSSS. To verify the performance of implemented modem, it is made up the powerline channel environment. After adding several noises to it, we examined the receiving status of modem. The implemented modem is able to receive the signal over the powerline channel with having several noises and capacitive loads.

• Journal of Microbiology and Biotechnology
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• v.26 no.2
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• pp.255-262
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• 2016

The carrageenan-degrading marine bacterium Vibrio sp. strain NJ-2 was isolated from rotten red algae, and κ-carrageenase with high activity was purified from the culture supernatant. The purified enzyme with molecular mass of 33 kDa showed the maximal activity of 937 U/mg at 40℃ and pH 8.0. It maintained 80% of total activity below 40℃ and between pH 6.0 and 10.0. The kinetics experiment showed the K_m and V_max values were 2.54 g/ml and 138.89 mmol/min/mg, respectively. The thin layer chromatography and ESI-MS analysis of hydrolysates indicated that the enzyme can endolytically depolymerize the κ-carrageenan into oligosaccharides with degrees of depolymerization of 2-8. Owing to its high activity, it could be a valuable tool to produce κ-carrageenan oligosaccharides with various biological activities.

• Proceedings of the Korea Concrete Institute Conference
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• 2004.11a
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• pp.133-136
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• 2004

This study concerns the. new equation of concrete strength by schmidt hammer test. There are not only few estimate strength equations of concrete by schmidt hammer test, but also many problems to apply them because of time, cost, easiness, structural damage, reliability and so on. For this study, there performed a series of schmidt hammer test with in existing 730days' concrete structures and proposed equations as follows; $$Linear\;:\;f_{ck}=2.18R-40.54\;(r^2=77.7\%)$$ $$Quadratic\;:\;f_{ck}=0.076R^2-2.92R+40.04\;(R^2= 85.5\%)$$ here, fck : Estimated compressive strength of concrete by MPa, R : Rebound index of concrete.