http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Continuum-wise expansiveness for non-conservative or conservative systems
Pergamon Press 2016 Chaos, solitons, and fractals Vol.87 No.-
In this paper, we show that a non-conservative vector field is robustly continuum-wise expansive if and only if it satisfies both Axiom A and the quasi-transversality condition. Moreover, a conservative vector field (divergence-free vector field, Hamiltonian system) is robustly continuum-wise expansive if and only if it is Anosov.
Lee, M.,Oh, S.Y.,Pathak, T.S.,Paeng, I.R.,Cho, B.Y.,Paeng, K.J. Elsevier 2007 Journal of chromatography Vol.1160 No.1-2
A simple and selective one-step solid-phase extraction procedure using chemically modified polymer resin (Amberlite XAD-4) with crown ether was investigated for the measurement of urinary catecholamines. After loading the urine samples (adjusted to pH 4) on the synthesized adsorbent cartridge, the column was washed with methanol followed by water and then the adsorbed catecholamines were eluted by 1.0mL of 6.0M acetic acid. The effectiveness of sample clean-up method was demonstrated by reversed-phase ion-pair high-performance liquid chromatography with electrochemical detection. Under optimal condition, the recoveries of epinephrine, norepinephrine, and dopamine from spiked urine sample were >86% for all catecholamines. The detection limits (n=5) for epinephrine, norepinephrine, and dopamine were 37, 52, and 46nmol/L, respectively.
Lee, M.,Lee, H.,Cheon, G. J.,Kim, H. S.,Chung, H. H.,Kim, J. W.,Park, N. H.,Song, Y. S. Springer Science + Business Media 2017 European radiology Vol.27 No.1
<P>aEuro cent FDG-based heterogeneity could be a potential predicator of EOC recurrence before treatment.</P>
Lee, M.,Lee, J.,Kang, C.,Kim, K.,Jang, H.,Kim, B.,Jang, G. Springer Science + Business Media 2016 Microsystem Technologies Vol.22 No.6
<P>We propose a method to predict the oil injection time of fluid dynamic bearings (FDBs) with a tied shaft by applying Kirchhoff's pressure law. Since the oil is injected by capillary phenomenon, the volume flow rate can be calculated by utilizing Kirchhoff's pressure law. Then, we calculated the oil injection time of the FDBs with a tied shaft by dividing the volume flow rate by the clearance volumes of the journal bearing, the thrust bearing, and the recirculation channel (RC), respectively. We generated simulation models of the FDBs used in a 2.5aEuro(3) HDD spindle motor with a tied shaft. The total oil injection times of the FDBs with and without a RC were 0.302 and 0.335 s, respectively. Also, we verified the proposed method by measuring the oil injection time of FDBs with a RC. We applied the proposed method to predict and improve the oil injection time of the FDBs with a tied shaft due to the variation of major parameters affecting the oil injection time.</P>
Lee, M.,Jang, Y.,Kim, K.,Cho, H.,Jee, S.h.,Park, Y.,Kim, M.K. Elsevier Scientific Publ. Co 2010 Atherosclerosis Vol.213 No.1
Objective: Limited information is available on the association of HDL subtypes and the risk of metabolic syndrome (MetSyn). The objective of the present study was to investigate the association of HDL subspecies with the prevalence of MetSyn in new outpatients. Methods: Five hundred forty-one new outpatients (366 males and 175 females) were enrolled in two hospitals participating in the KMSRI-Seoul Study. The new criteria for the Korean MetSyn based on the 2005 KHANES were used. Medical questionnaires, anthropometric measurements, 3-day recall dietary assessments, and blood biomarker analyses were performed. Unconditional logistic regression models were used to estimate crude and odds ratios (ORs) and 95% confidence intervals (CIs) with multivariate adjustments. The proportions of HDL subtypes were measured after subtypes were identified by 4-30% gradient gel electrophoresis. Results: Of the subjects, 50.8% were classified as MetSyn; blood pressure (BP) and fasting blood sugar (FBS) among the five criteria did not differ by gender. Increasing the HDL<SUB>2b</SUB> subtype significantly reduced the risk of MetSyn in males and females. The association of small size HDL<SUB>3b</SUB> with the risk of MetSyn was stronger in females than in males: adjusted ORs (95% CIs) for the 3rd tertile of HDL<SUB>3b</SUB> compared to the 1st tertile were 3.79 (CI, 2.00-7.18) in males and 11.2 (CI, 2.1-59.6) in females. However, a decreased waist circumference (WC), BP, and triglycerides (TG) were observed with increased large HDL particles in males. Conclusions: Small-sized HDL was associated with increased MetSyn risk factors and closely related to WC, BP, TG, and HOMA-IR, particularly in males.