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진미령,최용휴,이세휘,김규상 大韓産業醫學會 1998 대한직업환경의학회지 Vol.10 No.4
The objectives of this study were to investigate the prevalence and risk factors of occupationally related carpal tunnel syndrome(CTS) among workers employed in services and manufacturing industries analysing the sensitivity and specificity of clinical symptoms and signs. Three surveys were made for this study. The first survey was done for 1,447 workers employed by 25 companies. The jobs of the employees were repetitive works at VDT and assembly lines. Therefore, employees could be divided to two groups, doing repetitive works and non repetitive works. The second survey was made for 189 workers who were randomly selected from 517 workers complained some symptoms at their hands and wrists. We examined their symptoms and carried out neurological examinations for CTS(Tinel's sign, Phalen's sign, pin prick test, carpal compressive test, toniquet compression test). The third survey was made for nerve conduction study(NGS) for 57 workers who had shown positive signs for CTS. The main results of this study were as follow: 1. From the first survey, we have found that there were significant statistical differences in getting uncomfortable neuromuscular symptoms by sex, job type, total working hours during a week, duration of current work, and kinds of work. Odds ratio in male vs female, repetitive vs non repetitive, service vs manufacturing companies, total working hours during a week, and duration of current work were 1.867(95% CI=1.467-2.377), 1,680(95% CI=1.121-2.279), 1.663(95% CI=1.123-2.279), 1.016(95% CI=1.006-1.027) and 1.283(95% CI=1.097-1.501) respectively. 2. From the second survey, we have found that 46 peoples (25.0%) were positive for one or more than one signs in neurological examination of NIOSH criteria. Positive findings from neurological examinations were high among workers of low level of education(p-value=0.008), manufacturing jobs(p-value=0.00), long hours a week(p-value=0.028), and long duration of current work(p-value=0.00). 3. From the third survey, we diagnosed 35 peoples (61.4%) had CTS by NCS. They had abnormally delayed latent period or velocity in median nerve conduction velocity.
DIMENSION FOR A CANTOR-LIKE SET WITH OVERLAPS
Lee, Mi-Ryeong,Park, Jung-Ju,Lee, Hung-Hwan Korean Mathematical Society 2004 대한수학회논문집 Vol.19 No.4
In this paper we define a Cantor-like set K with overlaps in R$^1$. We find the correlation dimension of the set K without two conditions: the control of placements of basic sets constructing K and the thickness of K being greater than 1.
The Correlation Dimensions of Loosely Self-Similar Sets
Lee, Mi-Ryeong ... et al KYUNGPOOK UNIVERSITY 2000 Kyungpook mathematical journal Vol.40 No.2
For a given loosely self-similar set K which is generated by a sequence of similarity maps, we define the push-down measure ν on K and calculate the correlation dimension of K with respect to the measure ν. It is just the same as the Hausdorff dimension of K.
ON QUASI-A(n, κ) CLASS OPERATORS
Lee, Mi Ryeong,Yun, Hye Yeong Korean Mathematical Society 2013 대한수학회논문집 Vol.28 No.4
To study the operator inequalities, the notions of class A operators and quasi-class A operators are developed up to recently. In this paper, quasi-$A(n,{\kappa})$ class operator for $n{\geq}2$ and ${\kappa}{\geq}0$ is introduced as a new notion, which generalizes the quasi-class A operator. We obtain some structural properties of these operators. Also we characterize quasi-$A(n,{\kappa})$ classes for n and ${\kappa}$ via backward extension of weighted shift operators. Finally, we give a simple example of quasi-$A(n,{\kappa})$ operators with two variables.
THE CORRELATION DIMENSION OF GENERALIZED CANTOR-LIKE SETS
Lee, Mi-Ryeong,Baek, Hun-Ki The Honam Mathematical Society 2012 호남수학학술지 Vol.34 No.2
In the paper, a symbolic construction is considered to define generalized Cantor-like sets. Lower and upper bounds for the correlation dimension of the sets with a regular condition are obtained with respect to a probability Borel measure. Especially, for some special cases of the sets, the exact formulas of the correlation dimension are established and we show that the correlation dimension and the Hausdorff dimension of some of them are the same. Finally, we find a condition which guarantees the positive correlation dimension of the generalized Cantor-like sets.
Ryeong Ha Kwon,Heon-Woong Kim,Suji Lee,So-Jeong Lee,Hyemin Na,Ju Hyung Kim,Chi-Do Wee,Seon Mi Yoo,Sang Hoon Lee 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10
In this study, shoots and leaves of Acanthopanax senticosus (AST) were analyzed to identify triterpenoid saponins using UPLC-DAD-QToF/MS. The forty-three of saponins were isolated and identified by six standard compounds and published data (library) and the seventeen of saponins were tentatively confirmed for the first time as new compounds. According to aglycone types, triterpenoid saponins in shoots and leaves were classified to oleanane (mesembryanthemoidigenic acid, echinocystic acid, hederagenin, oleanolic acid), noroleanane (akebonic acid), lupane (chiisanogenin) classes. These saponins possessed structures in which arabinose (Ara, m/z 132), rhamnose (Rham, m/z 146), glucose and galactose (Glu and Gal, respectively, m/z 162) were bonded to C-3 of each aglycone and Rham-2Glu (m/z 470) or Rham-(acetyl)Glu-Glu (m/z 512) were bonded to C-28. The MS fragment pattern and intensity of the compounds were the crucial factors that tentatively identified to sugar type and position. It was the fundamental data that the result of composition of AST saponins support in future activity research and functional product development.
The correlation dimension of generalized cantor-like sets
( Mi Ryeong Lee ),( Hun Ki Baek ) 호남수학회 2012 호남수학학술지 Vol.34 No.2
In the paper, a symbolic construction is considered to define generalized Cantor-like sets. Lower and upper bounds for the correlation dimension of the sets with a regular condition are obtained with respect to a probability Borel measure. Especially, for some special cases of the sets, the exact formulas of the correlation dimension are established and we show that the correlation dimension and the Hausdorff dimension of some of them are the same. Finally, we find a condition which guarantees the positive correlation dimension of the generalized Cantor-like sets.
Lee, Hyun Ah,Song, Bo Ram,Kim, Hye Ryeong,Kim, Ji Eun,Yun, Woo Bin,Park, Jin Ju,Lee, Mi Lim,Choi, Jun Young,Lee, Hee Seob,Hwang, Dae Youn D.A. Spandidos 2017 Experimental and therapeutic medicine Vol.14 No.5
<P>Roots of <I>Asparagus cochinchinesis</I> have been widely used to treat fever, cough, kidney disease, breast cancer, inflammatory and brain disease, although the effects of their fermented products have not been assessed until now. To investigate the anti-inflammatory effects on macrophages of a butanol extract from <I>A. cochinchinensis</I> roots fermented with <I>Weissella cibaria</I> (BAW), alterations in the inducible nitric oxide synthase (iNOS)-mediated cyclooxygenase-2 (COX-2) induction pathway and inflammatory cytokine expression were measured in lipopolysaccharide (LPS)-activated RAW264.7 cells following pretreatment with BAW. Briefly, <I>W. cibaria</I> was selected from two bacterial strains for the fermentation of <I>A. cochinchinensis</I> roots based on its hyaluronidase inhibition and NO suppression rates. Following fermentation with <I>W. cibaria</I>, the level of various key components including total phenols and protodioscin were significantly enhanced in BAW. In addition, BAW exhibited high free radical scavenging activity (IC<SUB>50</SUB>=31.62 µg/ml) and induced a decrease of intracellular ROS production in RAW264.7 cells following DCFH-DA staining. Significant suppressions in the expression level of important members of the iNOS-mediated COX-2 induction pathway and the phosphorylation of mitogen-activated protein kinase members were detected. The expressions of pro-inflammatory and anti-inflammatory cytokines were recovered in BAW pretreated RAW264.7 cells. Overall, these results suggest that BAW may suppress inflammatory responses through differential regulation of the iNOS-mediated COX-2 induction pathway and inflammatory cytokine expressions in LPS-activated RAW264.7 cells.</P>