• 한국식품과학회지
• /
• 제40권4호
• /
• pp.382-388
• /
• 2008

(주)포테이토밸리에서 개발한 감자 신품종인 구이밸리, 보라밸리, 고구밸리와 기존 품종인 수미의 영양성분과 이화학적 특성을 조사하였다. 일반성분의 경우 조단백은 수미가, 회분은 고구밸리가, 탄수화물은 보라밸리가 가장 높게 나타났으며, 지방산은 linoleic acid, linolenic acid와 같은 필수지방산의 비율이 높으면서 품종간 함량 차이는 거의 없었다. 무기질 함량은 고구밸리가 가장 높았으며, K와 P가 주요 무기질인 것으로 나타났다. 구이밸리는 전분 함량이 높고 환원당 함량은 낮아 가공용 감자로 이용하기에 적합한 품종이었고, 식이섬유와 vitamin C는 고구밸리가 기타 품종에 비해 월등히 높은 함량을 나타내었다. 페놀산의 경우 chlorogenic acid, caffeic acid 그리고 ${\rho}-coumoric$ acid 등이 정량되었고 chlorogenic acid와 caffeic acid가 주요 페놀산이었으며, 보라밸리가 가장 높은 페놀산 함량을 나타내었다. DSC 분석 결과 호화개시 온도는 수미에 비하여 밸리 품종이 비교적 높은 호화개시 온도를 나타내었고, 피크온도도 유사한 경향이었으며, 호화 엔탈피는 구이밸리가 가장 높은 값을 나타내었다. RVA 상의 페이스트 온도는 DSC 결과에서의 호화개시온도 경향과 유사하였으며, 구이밸리가 가장 높은 최고점도와 최종점도를 나타내었다.

• BMB Reports
• /
• 제42권2호
• /
• pp.91-95
• /
• 2009

Peroxisome proliferator-activated receptor $\alpha$ and estrogen are believed to be involved in metabolic changes leading to obesity. To test this relationship, we divided female wildtype and PPAR$\alpha$-deficient mice fed on a high fat diet into the following groups: mock-operated, ovariectomized (OVX), and $E_2$-treated. The visceral white adipose tissue and plasma cholesterol levels were increased significantly in wild type OVX and decreased in the $E_2$-treated group, but interestingly not in PPAR$\alpha$-deficient mice. The mRNA levels of lipoprotein lipase in adipose tissue were also increased in only wild type OVX and decreased significantly in $E_2$-treated mice. These novel results suggest the possibility of signaling crosstalk between PPAR$\alpha$ and $E_2$, causing obesity in vivo.

• 한국항행학회논문지
• /
• 제11권4호
• /
• pp.423-429
• /
• 2007

무선 스마트카드는 빌딩 보안 어플리케이션에 주된 역할을 하고 있다. 본 연구는 사용자에게 보다 편리함을 주고 스마트카드 시스템의 성능 개선을 제안한다. 스마트카드는 카드 리더기에 삽입을 하지 않고 장치에서 수센티미터 떨어져도 접근이 허용된다. 적응형 변조와 오류 제어를 통해 전력소비를 제어하는 성능은 필요하다. 본 논문에서는 적응형 리드 솔로몬 코드 기반의 FEC와 링크에서 M계수를 변화시킨 M-FSK변조에 대하여 연구한다. 적응형 변조와 적응형 오류 정정은 다른 다양한 정적스키마와 에너지 효율을 비교한 결과 50% 이상 에너지를 저장한다.

• 간호행정학회지
• /
• 제20권2호
• /
• pp.237-246
• /
• 2014

Purpose: This study was done to determine the influential factors related to organizational citizenship behavior of nurses with a focus on authentic leadership and organizational justice. Methods: The study participants were 186 nurses who work at K University Hospitals in Seoul and Gyeonggi province. Data were collected in September and October, 2013. A structured questionnaire was used for data collection and data were analyzed using the SPSS/Window program. Results: The factor most influential for organizational citizenship behavior was authentic leadership (${\beta}$=.371, p<.001), followed by organizational justice (${\beta}$=.221, p=.005), and marital status (${\beta}$=.142, p=.023). These factors accounted for 30.7% of the variance in organizational citizenship behavior. Conclusion: In order to enhance organizational citizenship behavior of nurses, strategies for human resource management, which improve the perception of head nurses' authentic leadership and organizational justice, are required.

• Bulletin of the Korean Chemical Society
• /
• 제33권10호
• /
• pp.3423-3426
• /
• 2012

Dielectric measurement on binary mixtures of Allyl chloride (ALC) with 2-Pentanone (2-PE) and 2-Hexanone (2-HE) has been carried out over the entire concentration range using Time Domain Reflectometry (TDR) technique at various temperatures in microwave frequency range of 10 MHz to 10 GHz. The static dielectric constant, excess static dielectric constant (${\varepsilon}^E_S$), effective Kirkwood correlation factor ($g^{eff}$) of binary mixtures over entire concentration range were determined to study the effect of increasing alkyl group of ketones on hetero molecular interaction. It was found that magnitude of excess static dielectric constant of mixtures increases with increase of alky group of ketones. The study reveals that the dipole moment of Allyl chloride in mixture have antiparallelism tendency where as 2-pentanone and 2-hexanone have parallelism tendency. Excess static dielectric constant is also fitted to Redlich-Kister equation to get information about rates of multimers formation.

• Asian Pacific Journal of Cancer Prevention
• /
• 제15권19호
• /
• pp.8215-8219
• /
• 2014

CD133 is one of the most important stem cell markers in solid cancers and Ki-67 is a marker that reflects cell proliferation. The relationships between the expression of CD133 and Ki-67 and prognosis in gastric carcinoma are unknown and need exploring. We examined 50 gastric cancer patients retrospectively in the Radiation Oncology Department of the Faculty of Medicine, Gazi University. CD133 and Ki-67 expression was examined using immunohistochemical staining. The survival rate in patients with CD133 positive expression was significantly worse than that in the patients with negative expression (p=0.04). Expression of CD133 had a positive correlation with that of Ki-67 (r=0.350; p=0.014). Multivariate analysis revealed that the expression of CD133 was an independent prognostic factor in gastric cancer (p=0.02). Conclusion, expression of CD133 may be a useful prognostic marker in gastric cancer.

• 대한통합의학회지
• /
• 제5권4호
• /
• pp.83-89
• /
• 2017

Purpose : This study aimed to investigate a study on the intervention of computerized cognitive rehabilitation applied to patients with dementia in Korea. Thus, a systematic discussion was conducted. Methods : Studies from January 2000 to December 2016 were searched in the Korea Education and Research Information Service. The main key words used were: "dementia," "computerized cognitive rehabilitation," "computerized cognitive training," "computer assisted cognitive therapy," and "computerized cognitive therapy." Result : A total of five studies were selected. The effects of the computerized cognitive rehabilitation therapy applied to patients with dementia resulted in improved cognitive functions, as well as daily living and activities instrumental to daily living. There was also an increase in brain activity. The qualitative aspects of this study showed a low level of internal and external validities due to the small number of subjects, short period of intervention, and limited study environment. Conclusion : In the future, it is necessary to continue a study in which the level of evidence is high to determine whether various cognitive rehabilitation programs are effectively applied to patients with dementia.

• Journal of the Korean Wood Science and Technology
• /
• 제45권4호
• /
• pp.471-481
• /
• 2017

As the molecular weight (MW) of urea-formaldehyde (UF) resins had a great impact on their properties, this work was conducted to study effect of analytical parameters of gel permeation chromatography (GPC) on the MW measurement of UF resins. GPC parameters such as flow rate, column, detector temperature, and sample injection temperature were selected to compare number-average molecular weight (Mn), weight-average molecular weight (Mw), molecular weight distribution (MWD) and polydispersity index (PDI) of two UF resins with different viscosities. As expected, UF resin with higher viscosity resulted in greater Mn and Mw than those of low viscosity UF resin. When the flow rate increased, both Mn and Mw of UF resins decreased and MWD became narrower. By contrast, both Mn and Mw increased and MWD became wide when the column, detector, and sample injection temperature increased. The column, detector, and sample injection temperature of $50^{\circ}C$ at a flow rate of $0.5m{\ell}/min$ resulted in the highest MW and broadest MWD for the GPC analysis. These results suggest that the apparent molecular size or a hydrodynamic radius of UF resin molecules dissolved in the mobile phase affect to Mn, Mw and MWD.

• 한국진공학회:학술대회논문집
• /
• 한국진공학회 2016년도 제50회 동계 정기학술대회 초록집
• /
• pp.301.1-301.1
• /
• 2016

We report an ultraclean, cost-effective, and easily scalable method of transferring and patterning large-area graphene using pressure sensitive adhesive films (PSAFs) at room temperature. This simple transfer is enabled by the difference in wettability and adhesion energy of graphene with respect to PSAF and a target substrate. The PSAF transferred graphene is found to be free from residues, and shows excellent charge carrier mobility as high as ${\sim}17,700cm^2/V{\cdot}s$ with less doping compared to the graphene transferred by thermal release tape (TRT) or poly(methyl methacrylate) (PMMA) as well as good uniformity over large areas. In addition, the sheet resistance of graphene transferred by recycled PSAF does not change considerably up to 4 times, which would be advantageous for more cost-effective and environmentally friendly production of large-area graphene films for practical applications.

• Membrane and Water Treatment
• /
• 제11권3호
• /
• pp.223-229
• /
• 2020

Here magnetic iron oxide particles (MIOPs) were synthesized under atmospheric air and which size was controlled by regulating the flow rate of alkali addition and used for efficient removal of bovine serum albumin (BSA) from water. The MIOPs were characterized using field-emission scanning electron microscopy (FE-SEM), Fourier transformation-Infrared spectroscopy (FT-IR) and vibrating sample magnetometer (VSM). The results revealed a successful preparation of the MIOPs. The removal efficiency for BSA using MIOPs was found to be about 100% at lower concentrations (≥ 10 mg/L). The maximum adsorption of 64.7 mg/g for BSA was achieved as per the Langmuir adsorption model. In addition, microfiltration membrane for removal of BSA as model protein organic foulant is also studied. The effect of various MIOPs adsorbent sizes of 210, 680 and 1130 nm on the absorption capacity of BSA was investigated. Water permeability of the BSA integrated with the smallest size MIOPs membrane was increased by approximately 22% compared by the neat BSA membrane during dead-end filtration. Furthermore, the presence of small size MIOPs were also effective in increasing the permeate flux.