http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
복합 운동프로그램이 초등학생의 신체구성, 혈중지질 및 체력에 미치는 영향
전종귀,이왕록,박희근,정준현,이영란,신동원,이경숙 충남대학교 체육과학연구소 2006 體育科學硏究誌 Vol.23 No.1
The purpose of the present study was to examine the effects of combined training on the changes of body composition, blood lipid profile and fitness in elementary school students. Thirty subjects participated in the present study. The subjects were divided into two groups either exercise group for 10weeks(15n) or control group for 10weeks(l5n) The results were described as follows; 1) There were significant differences in the body weight and lean body mass after the exercise program between two groups. 2) There were no significant differences in the blood TC, HDL-C, LDL-C, TG concentration after the exercise program between two groups. 3) There were significant differences in the sit-up and flexibility after the exercise group between two groups. In conclusion, it might be thought that the combined training improved the levels of body composition and health-related fitness in elementary subjects.
Wang, Xin-kui,Yan, Shi-run,Li, Zhen-hua,Fan, Kang-nian,Kang, Mao-qing,Peng, Shao-yi 한국화학공학회 2004 Korean Journal of Chemical Engineering Vol.21 No.2
A novel non-phosgene process for the synthesis of methyl N-phenyl carbamate (MPC) by a reaction of phenylurea with methanol was studied. The reaction between phenylurea and methanol was found to be a spontaneous reaction that took place in the absence of catalyst and gave MPC as the main product. Addition of a catalyst markedly influenced the reaction behavior. A basic catalyst greatly enhanced the yield of MPC, whereas an acidic catalyst promoted the formation of aniline and methyl carbamate. Moderate strength of basicity showed the best catalytic performance in the cases studied. The mechanism of reaction and catalyst functioning was discussed.
Kui Wang,Lu Shen,Rong Lu,Zhao Yang,Zongbao Qin 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.110 No.-
Ultrahigh molecular weight polyethylene (UHMWPE) fibers have an ultralow interfacial property becauseof their extraordinarily smooth and nonpolar surfaces, and this property is a persistent problem inUHMWPE fiber-reinforced composites. In this investigation, a novel one-step and mild strategy forenhancing the interfacial property of UHMWPE fiber-reinforced composites was reported. In this strategy,a biomimetic layer with abundant stacked and three-dimensional nanoparticles formed on fiberssurface through the synergistic effect of polydopamine and 3-aminopropyltriethoxysilane. Owing tothe unique three-dimensional structure and sufficient polar groups on the fibers surface, surface roughnessand surface energy significantly increased, and wettability improved. Consequently, the interfacialshear strength (IFSS) of the fibers exhibited a 407.8% increase (8.36 MPa) relative to that of untreatedUHMWPE (2.05 MPa) because of these synergistic effects. Further analysis indicated that the failuremechanism of the fibers with the highest IFSS was the transformation from adhesive failure to cohesivefailure and substrate failure. The mild preparation process maintained the high crystallinity and orientationof the modified UHMWPE fibers, which exhibited a high tensile force of up to 81 cN.
Wang, Cai Yi,Kim, Donghwa,Zhu, Yan Kui,Oh, Dong-Chan,Huang, Ri Zhen,Wang, Heng-Shan,Liang, Dong,Lee, Sang Kook American Society of Pharmacognosy 2019 Journal of natural products Vol.82 No.11
<P>Three new germacrane sesquiterpenoid-type alkaloids with an unusual Δ<SUP>8</SUP>-7,12-lactam moiety, glechomanamides A-C (<B>1</B>-<B>3</B>), and two pairs of 7,12-hemiketal sesquiterpenoid epimers (<B>4a</B>/<B>b</B>, <B>5a</B>/<B>b</B>) were isolated from <I>Salvia scapiformis</I>. Their structures were elucidated by spectroscopic methods including HRESIMS, IR, UV, and 1D and 2D NMR and also confirmed by single-crystal X-ray diffraction analysis. The chemical transformation of compounds <B>1</B>-<B>5</B> in a solution environment was analyzed by 2D NMR spectroscopy. The aza acetallactams (<B>1</B>-<B>3</B>) were stable in organic solvent, while single crystals of the hemiacetal esters (<B>4a</B>/<B>b</B>, <B>5a</B>/<B>b</B>) underwent a tautomeric equilibrium after being dissolved. Single crystals of <B>4a</B>, <B>4b</B>, and <B>5a</B> were obtained for the first time as their naturally occurring forms. Glechomanamide B (<B>2</B>) exhibited antiangiogenic activity by suppression of vascular endothelial growth factor (VEGF)-induced tube formation through modulation of VEGF receptor 2 (VEGFR2)-mediated signaling pathways in human umbilical vascular endothelial cells (HUVECs). In addition, compound <B>2</B> also showed the significant suppression of mRNA expression associated with glycolysis and angiogenesis biomarkers in high glucose (30 mM)-induced HUVECs. These findings suggest that compound <B>2</B> might be a potential lead compound candidate for the management of diabetic retinopathy.</P> [FIG OMISSION]</BR>
Molecular Characterization and Expression Patterns of Porcine Eukaryotic Elongation Factor 1 A
Wang, H.L.,Wang, H.,Zhu, Z.M.,Yang, S.L.,Fen, S.T.,Li, Kui Asian Australasian Association of Animal Productio 2006 Animal Bioscience Vol.19 No.7
The eukaryotic elongation factor 1 A (EEF1A) participates in protein synthesis by forming the eEF1A GTP tRNA complex to deliver aminoacyl-tRNA to the A site of ribosomes. This study described cDNA sequences and partial genomic structure of porcine EEF1A1. The porcine EEF1A1 gene encoded a protein with 462 amino acids, which shared complete homology with human, chimpanzee and dog. The temporal expression pattern showed the diversity of EEF1A1 level in mRNA was relatively minor in prenatal embryo skeletal muscle, however, the expression decreased during aging after birth in skeletal muscle of the Chinese Tongcheng pig. The spatial expression patterns indicated that the gene expressed in skeletal muscle, heart, lung, liver, kidney, fat and spleen. In addition, we assigned the gene to porcine chromosome 1 using a radiation hybrid panel.
Na Wang,Jianyao Kou,Lijie Wang,Fei Wang,Kui Lu 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2019 NANO Vol.14 No.5
A novel electrochemically activated ZrO2 nanoparticles modified carbon paste electrode (CPE) (ZrO2-CPE(ox)) was prepared and applied for selective and sensitive determination of hyperin. Scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman spectra and electrochemical experiment were used to characterize the ZrO2 nanoparticles and investigate the electrochemical performance of the ZrO2-CPE(ox). Compared with bare CPE and electrochemically activated CPE (CPE(ox)), the ZrO2-CPE(ox) got more reactive sites by electrochemical treatment and exhibited larger effective surface area and more excellent electrochemical catalytic activity toward the redox of hyperin. Under the optimum conditions, the oxidation peak currents showed a linear relationship with the concentrations of hyperin in the range of 5.0 x 10 -9 – 2.0 x 10 -6 mol L -1 and 2.0 x 10 -6 – 1.2 x 10 -5 mol L -1, and a low detection limit of 1.0 x 10 -9 mol L -1 was achieved for hyperin. Moreover, the proposed method exhibited an excellent selectivity, stability, reproducibility and repeatability, which make it very suitable for a potential choice for determining the concentrations of hyperin in drug matrices.
Robust H∞ Fuzzy Control for Discrete-time Nonlinear Systems
Li-Kui Wang,Xiao-Dong Liu 제어·로봇·시스템학회 2010 International Journal of Control, Automation, and Vol.8 No.1
This paper studies the problem of robust H∞ control for discrete-time nonlinear systems presented as Takagi--Sugeno’s fuzzy models. The generalized non-parallel distributed compensation (non-PDC) law and non-quadratic Lyapunov function is constructed by the proposed homogeneouspolynomially basis-dependent matrix function (HPB-MF for abbreviation). Based on the generalized non-PDC law and non-quadratic Lyapunov function, some linear matrix inequalities (LMIs) are obtained by exploiting the possible combinations of the basis functions. These LMIs ensure the asymptotic stability of the closed-loop system and guarantee a norm bound constraint on disturbance attenuation. In addition, it is shown that the LMIs become less conservative as the degree of HPB-MF increases. The merit of the methods presented in this paper lies in their less conservatism than other methods, as shown by a numerical example borrowed from the literature.