• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.18 no.2 s.117
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• pp.177-182
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• 2007

This paper presents the InGaP/GaAs HBT differential LC VCO with low phase noise performance for adaptive feedback interference cancellation system(AF-lCS). The VCO is verified with enhanced tank structure including filtering technique. The output tuning range for proposed VCO using asymmetric inductor and symmetric capacitors withlow pass filtering technique is 207 MHz. The output powers are -6.68 including balun and cable loss. The phase noise of this VCO at 10 kHz, 100 kHz and 1 MHz are -102.02 dBc/Hz, -112.04 dBc/Hz and -130.40 dBc/Hz. The VCO is designed within total size of $0.9{\times}0.9mm^2$.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.14 no.9
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• pp.936-943
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• 2003

The miniaturized wireless endoscope consists of CMOS Image sensor, FPGA, LED, Battery, DC to DC Converter, Antenna and Transmitter. FSK transmitter is designed and fabricated with 10 mm(diameter)${\times}$23 mm(thickness) dimension considering the maximum permission exposure(MPE), system size, power consumption, linearity and modulation method. Experimental results is - 3.67 dBm output power level, 20 MHz frequency deviation, and - 99 dBc/Hz(@100 kHz offset) phase noise at 1.2 GHz. From the in-vivo experiment, the designed FSK transmitter has a acceptable capability for wireless endoscope.

• The Plant Pathology Journal
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• v.23 no.3
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• pp.155-160
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• 2007

In order to develop chili pepper bacterial spot resistant cultivars and near-isogenic lines (NILs) to prompt the molecular mapping of the resistance gene, we have run backcross breeding program since 1994. Two resistance genes against Xanthomonas axonopodis pv. vesicatoria Bs2 from Fla. XVR 3-25 and Bs3 from our breeding line 25-11-3-2, were introduced into a land race, Chilseongcho (abbreviated to Chilseong hereafter) with good fruit guality. We report here the testing of $BC_4F_3\;to\;BC_4F_5$. We found that $BC_4F_5$ lines of the crosses were homozygous with respect to the respective genes of introduction. The lines, in which Bs2 gene was introduced, were hypersensitively resistant to both race 1 and race 3 of X. axonopodis pv. vesicatoria, whereas, those in which Bs3 was introduced were resistant to race 1.

• Journal of the Korean Data and Information Science Society
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• v.27 no.5
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• pp.1307-1316
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• 2016

This study was to execute the random arrangement of total 120 heads (10 heads per treatment plot ${\times}$ 3 repeats ${\times}$ 4 treatment plots) for four breeds [Blue arakana commercial Fowl (BC), Yeonsan silky fowl (YS), Korean native fowl (KN), White leghorn fowl (WL)] with the initiation of laying hens at 32 weeks old in order to comparatively analyze egg quality and composition by sorts of laying hens. In case of evaluation of the quality of eggs, this study has shown that BC had higher degree of Haugh unit coefficient (82.82) and in case cholesterol content of eggs, BC had significantly low content as 317.55mg/100g, but YS had rather higher content as 381.30mg/100g. Furthermore, this study has found out that BC had significantly low Oleic acid (C18:1n9) and WL had higher Amino acid content by breeds than those of other breeds (p<0.05).

• Analytical Science and Technology
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• v.35 no.4
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• pp.161-168
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• 2022

Wheat is rich in sources of fiber, oligosaccharides, and resistant starch, simple carbohydrates which may have a protective role against carcinoma. Additionally, Whole wheat/bran as well includes contains phytochemicals such as flavonoids, lignans, folate, phytosterols, phenolic acids, and tocols. The above phytochemicals suitable forms antioxidant and cholesterol-reducing activities. Phytoestrogens are regarded as especially essential in the preventative measures of hormonally dependent malignancies such as breast cancer (BC). In this study lowered BC risk has been associated with whole grain/bran consumption with an odds ratio (OR=0.24 and 95 %CI=0.10-0.56). Wheat/bran appears to have a reliable protective impact against BC. While intake of white bread has been associated with a high risk of BC (OR=2.63 and CI 95 %=1.07-6.48). Also, the E-Selectin (SELE) Single nucleotide polymorphisms (SNPs) rs5353 A/G and rs932307 C/T were investigated using the sanger sequences approach. There was a positive association between genotypes (rs5353 GG+AG) and (rs932307 TT+CT) with rate consumption of wheat-white/bread and these genotypes were more frequent in patients had BC in comparison with a significant difference (P=0.03) (P=0.01), respectively. The genotypes (GG+AG) frequency of the rs5353 polymorphism and (TT+CT) genotypes of the rs932307 polymorphism in the present study had a high risk of cancer with (OR=3.05), (OR=4.17) respectively. While these genotypes showed no significant association with the rate of whole grain consumption in patients and control. Therefore, the type of wheat may associate with increased incidence of disease-related with type of Polymorphism because some present genotypes of SNPs showed high (OR) which may refer to their positive associated with disease, the white wheat consumption may active the risky association between SNPs and BC.

• Journal of Navigation and Port Research
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• v.27 no.4
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• pp.437-441
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• 2003

In this paper, the 30 W power amplifier for an IMT-2000 repeater was developed a gain flatness and the third IMD (Intermodulation distortion) by microwave absorber. The absorption ability of the absorber is shown up to -10 dB and -4 dB at 3.6 GHz, 2.3 GHz band, respectively. The power amplifier without absorber has the gain over 57 dB, the gain flatness of $\pm$0.33 dB and the third IMD of 27 dBc at 33.3 W output. Otherwise, the power amplifier with absorber has the gain over 58 dB, the gain flatness of less than $\pm$0.9, the third IMD over 29 dBc at the same output power. As a result, the characteristic of the different type shows improvement of 1 dB in gain, 0.3 dB in gain flatness and 1.77 dBc in IMD.

• Journal of Physiology & Pathology in Korean Medicine
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• v.26 no.2
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• pp.189-198
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• 2012

Our former study indicated efficacy of apoptotic cell death on animal study by using Egg white combined Chalcanthite (EC). Clinically, bamboo salt is using because of safety. Hence we investigated a toxicity study for determining safety by adding bamboo salt in former materiel. We had two studies: toxicity of EC and of Bamboo salt with egg white combined Chalcanthite (BC). Both were studied in 1-week single and 5-week repeated oral dose toxicity tests on male Imprinting Control Region mice. In EC, doses used in 1 week single oral dose toxicity tests were 0, 0.05, 0.5, 5 and 50 mg/kg/day and 0, 0.01, 0.05, 0.25 and 0.5 mg/kg/day. In BC, doses used by 0, 0.08, 8.3, 83.3 and 166.6 mg/kg/day in single oral dose toxicity and 0, 4.2, 8.3, 41.7 and 83.3 mg/kg/day in repeated oral dose toxicity tests. Their blood and urine were assayed and organ morphology were examined. Mann-Whitney U test and ANOVA tests were used by analysing methods. First, significant increased left renal weight in all groups of EC and BC. Second, increased ALT score was found in EC-S2 and increased relative liver weight was found in EC-S3. In addition, increased relative weight and urine bilirubin and urobilinogen were found in EC-R2 and EC-R3. There was no significant toxic change in BC. The Mixture of EC had a possibility of hepatotoxicity in the short and long term. Processed BC appears to be safe and non-toxic in these studies and a no-observed adverse effect level (NOAEL) was established at 83.3 mg/kg/day in mice. Relatively, The BC were safer than The EC.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.48 no.1
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• pp.92-96
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• 2011

In this paper, we present a bandpass filter (BPF) based on composite right-/left-handed (CRLH) structure for improving the linearity of the power amplifier. The proposed BPF consist of the inter-digit signal line on the top plane and the complementary split ring resonator (CSRR) on the bottom plane, respectively. The insertion loss is minimized at operation frequency and the 2nd harmonic is suppressed by the bandpass filter using the CRLH structure, respectively. The output power of 33 dBm, the 2nd harmonic of -53.527 dBc, 3rd inter-modulation distortion of -36.16 dBc was obtained at 2.14 GHz, respectively. Compared with the reference power amplifier, the 2nd harmonic of 16 dB and 3rd inter-modulation distortion of 12 dB have been improved at 2.14 GHz, respectively.

• Biomolecules & Therapeutics
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• v.26 no.3
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• pp.328-334
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• 2018

Because of the unsatisfactory treatment options for breast cancer (BC), there is a need to develop novel therapeutic approaches for this malignancy. One such strategy is chemotherapy using non-toxic dietary substances and botanical products. Studies have shown that Panduratin A (PA) possesses many health benefits, including anti-inflammatory, anti-bacterial, anti-oxidant and anticancer activities. In the present study, we provide evidence that PA treatment of MCF-7 BC cells resulted in a time- and dose-dependent inhibition of cell growth with an $IC_{50}$ of $15{\mu}M$ and no to little effect on normal human MCF-10A breast cells. To define the mechanism of these anti-proliferative effects of PA, we determined its effect critical molecular events known to regulate the cell cycle and apoptotic machinery. Immunofluorescence and flow cytometric analysis of Annexin V-FITC staining provided evidence for the induction of apoptosis. PA treatment of BC cells resulted in increased activity/expression of mitochondrial cytochrome C, caspases 7, 8 and 9 with a significant increase in the Bax:Bcl-2 ratio, suggesting the involvement of a mitochondrial-dependent apoptotic pathway. Furthermore, cell cycle analysis using flow cytometry showed that PA treatment of cells resulted in G0/G1 arrest in a dose-dependent manner. Immunoblot analysis data revealed that, in MCF-7 cell lines, PA treatment resulted in the dose-dependent (i) induction of $p21^{WAF1/Cip1}$ and p27Kip1, (ii) downregulation of Cyclin dependent kinase (CDK) 4 and (iii) decrease in cyclin D1. These findings suggest that PA may be an effective therapeutic agent against BC.

• Journal of the Korean Society of Tobacco Science
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• v.16 no.2
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• pp.102-107
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• 1994

This study was conducted to transfer the potato virus Y-necrosis strain resistance from Nicotiana africana to Nicotiana tabacum (cv. NC82) N. africana was crossed with NC82, GErmination of the cotyledon stage, at which time most of the seedling died. However, surviving seedlings continued to grow normally. Chromosomes of the these interspecific self-sterile F1 hybrids were doubled by tissue culture. Amphidiploid of F1 hybrid was self-fertile. Starting with amphidipliod, a wystematic backcross (BC) program was set up with NC82 as recurrent parent. In the BC5C2 generation, the resistant plant was selected. This resistant line, KF8833-1, had 48 chromosome and secreting glandular trichomes. It flowered 2days later than NC82, and stalk height, leaves per plant, leaf length and leaf width were similar to those of NC82.