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강원도 원주지역 초·중·고등학생의 식습관 및 섭식행동에 관한 단면연구
허혜경,박소미,김기연,김춘배,안정숙,송희영,김기경 韓國保健敎育.健康增進學會 2003 보건교육건강증진학회지 Vol.20 No.1
Purpose : The purpose of this study was to investigate the dietary habits of students in order to identify risk groups according to their Body Mass Index (BMI), and to compare the eating behavior of students in the normal range (19<I≤24) and those in risk groups (BMI≤19, 24<I≤27, BMI>). Method : 1176 elementary school students, 850 middle school students and 672 high school City, were the participants The instrument for this study was a structured questionnaire that included demographic data as well as dietary habits, and the eating behavior instrument developed by Stunkard &essick(1985) and revised by Kim &im (1997). Result : 1) As students moved up in grade level their dietary habits became more irregular and the degree that students chewed food was reduced 2) As students moved up in grade level, a greater number of the students did not eat breakfast. The reasons given were that there were not enough time before classes started(40.4%) and a lack of appetite in the morning(10.6%) in high school students. 3) As for supper, from 67.8 to 81.9% of subjects reported having regular supper. However the rest of the subjects did not eat supper because of anorexia and fear of weight gain. 4) The results identified risk groups according to their BMI showed that for elementary school students, 55.9% were in the low weight group, 5.5% in the overweight group, and 0.9% in the obese group. For middle and high school students, 40.6% and 35.5% respectively were in the low weight group, 7.4% and 6.3% in the overweight group, and 4.1% and 2.5% the obese group. 5) Comparisons of the eating behavior of students in the normal weight group with that of those in the three risk groups showed that there were significant differences in 'hunger' and 'cognitive restraint of eating' in elementary school students, and significant differences in 'cognitive restraint of eating' in middle and high school students. Conclusion : The results of this study show that management of diet in school health sholud be addressed from both the aspect of lack of nutrition and that of excess nutrition. In other words, good diet is as important for students in the low weight group as it is f3r those in the overweight and obese groups. The estatblishment of good dietary habits and eating behavior in students, by nurses and dieticians should be done by providing repeated diet education and involvement in diet counseling.
졸-겔공정을 이용한 초고용량 캐패시터용 Nickel oxide 나노입자의 합성
김두현,송기창,변태강,송연호 조선대학교 생산기술연구소 2003 生産技術硏究 Vol.25 No.2
The Ni (OH)₂ nanoparticles with average diameter of 50 nm were synthesized by hydrolyzing nickel acetate with water, and were dispersed in the distilled water to prepare the coating solution. The electrodes for supercapacitor were prepared by dip-coating the coating solution on the Ni-foam. The electrodes heat-treated at several temperatures showed the highest specific capacitance, 160 F/g, at 250℃. It can be explained that the Ni(OH)₂ particles heat-treated at 100 and 200℃ on the electrodes contained the impurities such as acetate groups in the pores, and resulted in low specific surface areas. However, as the calcination temperature increases. the impurities incorporated in the pores are removed at 250℃, and thus, the particles on the electrodes show the highest specific surface area (177 ㎡/g).
Kim, Moon Young,Suk, Ki Tae,Baik, Soon Koo,Kim, Hyoun A.,Kim, Young Ju,Cha, Seung Hwan,Kwak, Hwa Ryun,Cho, Mee Yon,Park, Hong Jun,Jeon, Hyo Keun,Park, So Yeon,Kim, Bo Ra,Hong, Jin Heon,Jo, Ki Won,Kim, Wiley Subscription Services, Inc., A Wiley Company 2012 Hepatology Vol.56 No.3
<P><B>Abstract</B></P><P>The measurement of the hepatic venous pressure gradient (HVPG) for the estimation of portal hypertension (PH) in cirrhosis has some limitations, including its invasiveness. Hepatic vein arrival time (HVAT), as assessed by microbubble contrast‐enhanced ultrasonography (CEUS), is negatively correlated with the histological grade of liver fibrosis because of the associated hemodynamic abnormalities. Anatomical and pathophysiological changes in liver microcirculation are the initial events leading to PH. However, the direct relationship between HVAT and PH has not been evaluated. The present study measured both HVPG and HVAT in 71 consecutive patients with compensated cirrhosis and analyzed the relationship between the two parameters (i.e., the derivation set). Results were validated in 35 compensated patients with cirrhosis at another medical center (i.e., the validation set). The derivation set had HVPG and HVAT values of 11.4 ± 5.0 mmHg (mean ± standard deviation; range, 2‐23) and 14.1 ± 3.4 seconds (range, 8.4‐24.2), respectively; there was a statistically significant negative correlation between HVPG and HVAT (r<SUP>2</SUP> = 0.545; <I>P</I> < 0.001). The area under the receiver operating characteristic curve (AUROC) was 0.973 for clinically significant PH (CSPH; HVPG, ≥10 mmHg), and the sensitivity, specificity, positive predictive value, negative predictive value, and positive and negative likelihood ratios for CSPH for an HVAT cut‐off value of 14 seconds were 92.7%, 86.7%, 90.5%, 89.7%, 6.95, and 0.08, respectively. In addition, a shorter HVAT was associated with worse Child‐Pugh score (<I>P</I> < 0.001) and esophageal varices (<I>P</I> = 0.018). In the validation set, there was also a significant negative correlation between HVAT and HVPG (r<SUP>2</SUP> = 0.538; <I>P</I> < 0.001), and AUROC = 0.953 for CSPH. HVAT was significantly correlated with PH. These results indicate that measuring HVAT is useful for the noninvasive prediction of CSPH in patients with compensated cirrhosis. (H<SMALL>EPATOLOGY</SMALL> 2012;56:1053–1062)</P>
KIM, Jae Kyeom,BAE, Heyri,KIM, Mi-Jeong,CHOI, Soo Jung,CHO, Hong Yon,HWANG, Han-Joon,KIM, Young Jun,LIM, Seung Taik,KIM, Eun Ki,KIM, Hye Kyung,KIM, Bok Yong,SHIN, Dong-Hoon Japan Society for Bioscience, Biotechnology, and A 2009 Bioscience, biotechnology, and biochemistry Vol.73 No.5
<P>Various native Korean plants were screened to find an effective acetylcholinesterase (AChE) inhibitor for the treatment of Alzheimer’s disease (AD). Among these plants, the ethanol extract of <I>Poncirus trifoliate</I> was selected for isolating the AChE inhibitor because it exhibited the highest inhibitory activity (47.31%). To separate the active compound from <I>Poncirus trifoliate</I>, solvent partition, open column chromatography, thin-layer chromatography (TLC), and high-performance liquid chromatography (HPLC) were utilized. The putative chemical structure of the AChE inhibitor was identified as <I>methoxsalen</I> by successive analysis with electron ionization mass spectrometry (EI-MS) and <SUP>13</SUP>C/<SUP>1</SUP>H-nuclear magnetic resonance (NMR). To confirm the attenuating effect of the <I>Poncirus trifoliate</I> extract against trimethyltin (TMT)-induced neurotoxicity, <I>in vivo</I> behavior tests were carried out. Our findings suggest that the <I>Poncirus trifoliate</I> extract significantly reversed TMT-induced learning and memory impairment. These results demonstrate that the <I>Poncirus trifoliate</I> extract could possess a wide range of beneficial activities for neurodegenerative disorders, notably AD.</P>