http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Eigenvalue Analysis of Overhang Structures by Pseudospectral Method
Lee, Jinhee Research Institute of Science and Technology HONGI 2005 Hongik Journal of Science and Technology Vol.9 No.-
The pseudospectral method is applied to the free vibration analysis of overhang structures which consist of Timoshenko beams. The analysis is based on the Chebyshev polynomials. Each section of the overhang structure has its own basis functions, and the continuity conditions at the intermediate support as well as the boundary conditions are treated separately as the constraints of the basis functions. Natural frequencies of overhang structures with pinned-pinned-free support conditions are provided for different thickness-to-length ratios and for different span ratios. The computed natural frequencies agree with those of Euler-Bernoulli beams when the thickness-to-length ratio is small but deviate considerably as the thickness-to-length ratio grows larger.
Jinhee,Woo,Ki-Ok,Shin,Chan-Ho,Park,Byung-Kon,Yoon,Do-Yeon,Kim,Ju-Yong,Bae,Yul-Hyo,Lee,Kangeun,Ko,Hee-Tae,Roh 한국응용과학기술학회 (구.한국유화학회) 2019 한국응용과학기술학회지 Vol.36 No.3
The purpose of this study was to investigate the effects of different types of exercise training on neurodegeneration and cognitive function in mice with impaired glucose tolerance (IGT). Thirty-six male C57BL/6 mice were randomly assigned to the control (CO, n = 9) and impaired glucose tolerance (IGT, n = 27) groups. The IGT group consumed 45% high fat diet for 4 weeks and received 40 mg/kg of streptozotocin twice in the lower abdomen to induce IGT. After the IGT induction period, the IGT group was subdivided into IGT + sedentary (IGT, n = 9), IGT + endurance exercise (IGTE, n = 9), and IGT + resistance exercise (IGTR, n = 9). The IGTE and IGTR groups performed treadmill and ladder climbing exercises 5 times per week for 8 weeks, respectively. Fasting glucose and glycated hemoglobin (HbA1c) levels were significantly higher in IGT group than in CO, IGTE, and IGTR groups ( p < 0.05). HOMA-IR was significantly higher in IGT group than CO group ( p < 0.05). Hippocampal catalase (CAT) was significantly lower in IGT group than in CO group ( p < 0.05), while beta-amyloid (Aβ) was significantly higher in IGT group than in CO group ( p < 0.05). Hippocampal tau was significantly higher in IGT group than in CO, IGTE, and IGTR groups ( p < 0.05). The Y-maze test performance for cognitive function was significantly lower in IGT group than in CO, IGTE, and IGTR groups ( p <0.05). These results suggest that IGT induces neurodegeneration and negatively affects cognitive function, while regular exercise may be effective in alleviating neurodegeneration and cognitive decline regardless of exercise type.
아동병원 간호사의 의사소통능력, 자기효능감이 간호사-환아부모 파트너십에 미치는 영향
김진희 ( Kim¸ Jinhee ),이한나 ( Lee¸ Hanna ) 경희대학교 동서간호학연구소 2021 동서간호학연구지 Vol.27 No.2
Purpose: This study aimed to identify the influence of communication competence and self-efficacy of nurses at children’s hospitals on the nurse-parent partnership. Methods: Data were collected by surveying (from July 4th to August 4th, 2019) 162 nurses who had 6 or more months of experience across 15 children’s hospitals in G City and B Metropolitan City. Using SPSS 23.0 for Windows for data analysis, t-tests, analysis of variance, Bonferroni tests, Pearson’s correlation coefficient, and multiple regression analysis were performed. Results: The nurse-parent partnership showed significantly positive correlations with nurses’ communication competence and with self-efficacy. There was a significantly positive correlation between nurses’ communication competence and self-efficacy. The factors influencing the nurse-parent partnership were nurses’ communication competence, job satisfaction, and self-efficacy; the total explanatory power of these variables was 47.0%. Conclusion: Since the communication competence of nurses at children's hospitals was identified as a major factor influencing the nurse-parent partnership, it may be meaningful to conduct basic research aimed at developing strategies to improve this partnership at children’s hospitals.
Myungin Lee(Myungin Lee),Juhee Lee(Juhee Lee),Jinhee Park(Jinhee Park) J-INSTITUTE 2022 International Journal of Human & Disaster Vol.7 No.2
Purpose: This study is a descriptive research study intended to confirm the effect of COVID-19 related efficacy of infection prevention activity, fear, and crisis communication skills on the importance of newly infectious dis-ease response capability of the nursing students. Method: The subjects were 266 3rd and 4th year students enrolled in the Department of Nursing at a univer-sity located in City I of Province J. The data collection was conducted from June 14 to June 27, 2020, and the data analysis method was the SPSS/WIN 23.0 using frequency, percentage, mean and standard deviation, Independ-ent t-test, One-way ANOVA, Pearson's correlation coefficient, and the multiple regression analysis was per-formed. Results: As a result of this study, the importance of newly infectious disease response capability turned out to have a statistically significant positive correlation with the efficacy of infection prevention activity, fear, and crisis communication skills. The importance of newly infectious disease response capability included the efficacy of infection prevention activity(β=.365, p<.001), crisis communication skills(β=.212, p<.001), and fear(β=.130, p<.001) .045), while the explanatory power was 30.0%. Conclusion: This study confirmed that the nursing students' COVID-19 related efficacy of infection prevention activity, fear, and crisis communication skills were the factors influencing the importance of newly infectious disease response capability related to COVID-19. Among which, it is necessary to develop an infection prevention activity support program to strengthen the efficacy of infection prevention activity yielding the largest impact.
[CB-0004] Assembly of chromosome-level genome to accelerate octoploid strawberry breeding
Koeun Han(Koeun Han),Sun Yi Lee(Sun Yi Lee),Jinhee Kim(Jinhee Kim),Hye-Eun Lee(Hye-Eun Lee),Jinkwan Jo(Jinkwan Jo),Eun Su Lee(Eun Su Lee),Byoung-Cheorl Kang(Byoung-Cheorl Kang),Do-Sun Kim(Do-Sun Kim) 한국육종학회 2022 한국육종학회 공동학술발표집 Vol.2022 No.-
Nanoporous poly(ether sulfone) from polylactide-b-poly(ether sulfone)-b-polylactide precursor
Lee, Jinhee,Park, Jongmin,Oh, Jaehoon,Lee, Sanghwa,Kim, Sang Youl,Seo, Myungeun Elsevier 2019 Polymer Vol.180 No.-
<P><B>Abstract</B></P> <P>We report a route to synthesize polylactide-b-poly(ether sulfone)-b-polylactide (PLA-b-PES-b-PLA) containing PES and PLA, which provide a mechanically robust framework and a sacrificial template for pore formation, respectively. High-molar mass PES terminated with fluorine groups was synthesized by the step-growth nucleophilic aromatic substitution (S<SUB>N</SUB>Ar) reaction, and the chain ends were transformed into benzylic hydroxyl groups by chain end modification. Growth of the PLA using the hydroxyl groups as initiating sites via chain-growth ring opening transesterification polymerization (ROTEP) produced the target triblock copolymer. Although the step-growth polymerization produced a PES middle block with high dispersity, small angle X-ray scattering (SAXS) and transmission electron microscopy (TEM) analyses indicated the formation of an ordered lamellar morphology. We further demonstrated that a nanoporous PES with slit-like pores could be obtained by selective removal of the PLA.</P> <P><B>Highlights</B></P> <P> <UL> <LI> A synthetic route to polylactide-b-poly(ether sulfone)-b-polylactide was developed. </LI> <LI> The chain ends of high-molar mass poly(ether sulfone) were modified to grow polylactide. </LI> <LI> The triblock copolymer exhibited an ordered lamellar phase. </LI> <LI> Removal of the PLA produced a nanoporous poly(ether sulfone) containing slit-like pores. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Lee, Jinhee,Yoon, Hyunjoo,Lee, Sunah,Lee, Heeyoung,Yoon, Yohan Korean Society for Food Science of Animal Resource 2013 한국축산식품학회지 Vol.33 No.4
This study evaluates the effects of fat contents on the thermal resistance, antibiotic sensitivity, and Caco-2 cell invasion of Listeria monocytogenes. Ten strain mixture of L. monocytogenes in milk (0, 1, and 4% fat) and pork sausage patties (10, 20, and 30% fat) were exposed to $63^{\circ}C$. To evaluate effects of fat on the antibiotic sensitivity of L. monocytogenes, the L. monocytogenes strains NCCP10811 (most antibiotic resistant to streptomycin) and NCCP10943 (most antibiotic sensitive to streptomycin) were exposed to different fat contents in milk and pork sausage patties, and L. monocytogenes from the foods were used for antibiotic sensitivity assays. The most invasive L. monocytogenes strains (NCCP10943) was exposed to different fat contents in milk or pork sausage patties, and L. monocytogenes from the foods were used for the Caco-2 cell invasion assays. The reductions of L. monocytogenes populations were not generally influenced by fat contents. The L. monocytogenes subjected to milk fat had increased sensitivities (p<0.05) due to some antibiotics. In addition, Caco-2 cell invasion efficiency of L. monocytogenes NCCP10943 increased (p<0.05) as fat contents increased. These results indicated that higher fat contents may be related to L. monocytogenes invasions and heat resistances in pork sausage patties, but the relationship between fat and antibiotic sensitivity varied according to antibiotics, strains, and fat contents.
Jinhee Lee 대한기계학회 2007 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.21 No.12
The pseudospectral method is applied to the free vibration analysis of circularly curved multi-span Timoshenko beams. Each section of the beam has its own basis functions, and the continuity conditions at the intermediate supports as well as the boundary condition are treated as the constraints of the basis functions so that the number of degrees of freedom matches the number of the pseudospectral expansion coefficients. The computed natural frequencies are com-pared with those of existing literature, where it is shown that they are in good agreement. Numerical examples are provided for pinned-pinned, clamped-clamped and free-pinned boundary conditions for different numbers of sections and for different thickness-to-length ratios.