• The Journal of Korean Institute of Communications and Information Sciences
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• v.28 no.10A
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• pp.807-815
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• 2003

MultiCode-CDMA (MC-CDMA) system of chip level MPSK incorporating with clipper (MP-CDMA)[l] shows constant envelope signal which can mitigate the performance degradation due to nonlinear transmit amplifier. In this paper, modulation is modified to carry out differential encoded MPSK rather than MPSK. The modified system is called DMP-CDMA. DMP-CDMA using differential detection has advantages on receiver complexity and pilot overhead. However, it is inferior to coherent detection by about 4.0dB due to inherent power inefficiency of noncoherent detection and the error propagation. Multiple symbol differential detection is employed in order to improve DMP-CDMA using differential detection. As the result, the performance of DMP-CDMA system is improved about 3.6dB compared to differential detection.

• Journal of Food Hygiene and Safety
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• v.18 no.3
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• pp.153-160
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• 2003

This study was performed to determine the urinary metabolites of methidathion in rats. Urine samples were collected for 24 hours in metabolic cages following after oral administration and dermal application of methidation to rats. The urinary metabolites were identified by GC/MS and the excretion time courses of urinary dialkyl phosphate metabolites were analyzed by CG/FPD. The results obtained are summarized as follows: Three dialkyl phosphate metabolites, DMP, DMTP. and DMDTP, were detected in the rat urine. Urinary dialkyl phosphate metabolites were identified on the basis of their mass spectra by GC/MS. The molecular ions of DMP, DMTP,and DMDTP, were identified at m/z 198, and m/z 158, respectively. A comparison of excretion time courses of urinary dialkyl phosphate metabolites between the orally administrated and dermally applicated rats were also established, After oral administration, 79.2% of DMP, 93.9% of DMTP, and 83.0% of DMDTP were excreted into the urine by 12, 24, and 12 hours, respectively. After dermal application, 71.1% of DMP, 82.8% of DMTP 87.7% of DMDTP were excreted into the urine by 24, 48, 48 hours, respectively. Consequently, almost all of the dialkyl phosphates in oral administration were excreted within 48 hours. However, the metabolites in dermal application were excreted up to 168 hours. In the study, three urinary metabolites of methidation, DMP, DMTP and DMDTP, were detected in the rat both after oral administraion and dermal application with methidathion. And the urinary excretion in dermal application was more delayed than that in oral administration. Based on the results, it tis suggested that three urinary dealkyl phosphates, DMP, DMTP, and DMDTP, could be used as the biomarkers of exposure for methidathion.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.29 no.1
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• pp.393-416
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• 2018

In this study, major steps of the research data management plan were derived through the research data management guidelines of major countries (NISO DMP in the US, UK DMP in UK archives, etc.). The results obtained are support for research data policy & planning, research data technical support, research data sharing support, research data legal mechanism support, and research data education support. In this study, we analyzed seven cases of data sharing among 7 domestic and foreign biotechnology. Shared use case countries are limited to the United Kingdom and the United States, which play a leading role in the management of research data. In Korea, shared cases were analyzed for the Korean Bio Information Center and related systems, which is a research and performance management and distribution agency designated by the Ministry of Science and Technology.

• Journal of the Korean Chemical Society
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• v.31 no.6
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• pp.486-490
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• 1987

The effect of the hydrogen-bonding between thioacetamide (TA) and amides (N,N-dimethylformamide (DMF), N,N-dimethylacetamide (DMA) and N,N-dimethylpropionamide (DMP)) on the hindered rotation of N-C(S) bond of TA was investigated by the nmr spectroscopy. The $^1H$-nmr spectrum of $NH_2$ group in TA was distinctly separated into two peaks with increasing the amount of $CCl_4$ and the effect of amides on the peak separation was in the order of DMF < DMA < DMP. Those phenomena were interpreted in terms of hydrogen-bonding between TA and amide.

• International Journal of Oral Biology
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• v.39 no.3
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• pp.145-151
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• 2014

During bone remodeling, there is requirement of differentiation of osteoblastic cells. Previously, we identified proteins differentially expressed in soft tissue during bone healing. Of these proteins, we focused the effect of LTF on differentiation of osteoblast. In order to analyze the osteogenic ability of LTF, we treated conditioned media collected from human LTF-stably transfected HEK293T cells into osteoblastic MC3T3-E1. The results showed that the activity and expression of alkaline phosphatase were increased in MC3T3-E1 cells treated with conditioned media containing LTF in dose- and time-dependent manner. At the same time, we observed the significant increase of the expression of osteoblastic genes, such as ALP, BSP, COL1A1, and OCN, and along with matrix mineralization genes, such as DMP1 and DMP2, in LTF conditioned media-treated groups. Moreover, the result of treating recombinant human LTF directly into osteoblastic MC3T3-E1 showed the same pattern of treating conditioned media containing LTF. Our study demonstrated that LTF constitutively enhances osteoblastic differentiation via induction of osteoblastic genes and activation of matrix mineralization in MC3T3-E1 cells.

• Bulletin of the Korean Chemical Society
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• v.35 no.1
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• pp.301-304
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• 2014

• Journal of the Korean Chemical Society
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• v.33 no.2
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• pp.156-163
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• 1989

The $ν_a+amide II$ combination band of thiopropionamide has been recorded for investigation of Hydrogen bonding between thiopropionamide (TPA) and N,N-dimethylalkylamide (DMF, DMA and DMP) in carbon tetrachloride over the range of $5^{\circ}$ to $55^{\circ}$. The combination band of monomeric TPA and hydrogen-bonded TPA can be resolved by Lorentzian-Gaussian product function into monomeric TPA and hydrogen-bonded TPA with amides. The association constants ($K_1$) for the hydrogen-bonded TPA were calculated by the concentrations of the monomeric TPA and the hydrogen-bonded TPA obtained from the computer resolved absorption bands. Thermodynamic parameters for the Hydrogen bonding have been evaluated by the analysis of the temperature dependent spectra. The ${\Delta}$$H^{\circ}$ of hydrogen-bonded TPA with DMF, DMA and DMP have been found to be-12.5, -13.5 and -14.1 kJ/mol, respectively. The corresponding ${\Delta}$$S^{\circ}$for the above system were -15.2, -17.9 and -22.3 J/mol${\cdot}$deg, respectively.

• Journal of the Korean Society of Food Science and Nutrition
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• v.42 no.12
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• pp.1972-1980
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• 2013

The purpose of this study is to evaluate the storage quality characteristics of bread with added dried mulberry pomace (DMP, 0, 1, 3 or 5%) during storage at $4^{\circ}C$ for 7 days. During the entire storage period, the moisture content was higher in breads containing DMP compared with the control bread. Textural properties by TPA showed that the hardness of DMP bread maintained a lower hardness than that of the control during the entire storage period. Moreover, DSC (Differential Scanning Calorimetry) result showed that ${\Delta}H$ (crystal melting enthalpy) of the bread containing DMP was lower than that of the control bread, which indicate the retarding of retrogradation. The sensory preference test results demonstrated that the bread with 3% DMP had higher scores in over-all preference than the others. These results suggest that DMP delays the retrogradation of bread during storage.

• Journal of the Korean Chemical Society
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• v.48 no.1
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• pp.17-27
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• 2004

A procedure based on solid phase microextraction extraction(SPME)-GC/MS has been developed for the simultaneous analysis of plasticizers. The plasticizers investigated in this study are dimethyl phthalate(DMP), diethyl phthalate(DEP), dibutyl phthalate(DBP), benzylbutyl phthalate(BBP), diethylhexyl phthalate (DEHP), di-n-octyl phthalate(DnOP). The limit of detection(LOD) was 0.163~0.299 with relative standard deciation(RSD) of 5.85~15.80% for these compounds. At water reserviors of Han, Geum, Nakdong and Sumjin rivers, only DBPand DEHP were detected at trace level, 0.192~1.270 ng/ml for DBP and 0.077~1.102 ng/ml for DEHP depending on the river.

• Korean Membrane Journal
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• v.9 no.1
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• pp.27-33
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• 2007

PVDF membrane formation via TIPS was performed for PVDF/DBP and PVDF/DMP systems. PVDF/DBP system showed solid-liquid phase separation behavior, while PVDF/DMP system has liquid-liquid phase separation characteristic as well as solid-liquid phase separation characteristic. PVDF contents and cooling conditions had great influence on structure, and the effects of each parameter were examined. Spherulitic structure was obtained due to the dominant PVDF crystallization. Diluent rejected to the outside of spherulite occupied the surface of the PVDF spherulites to result in the microporous spherulite formation and micro-void between spherulites. PVDF/DMP system had competitive solid-liquid and liquid-liquid phase separation depending on the cooling path.