oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2020 ( 1 )

2019 ( 57 )

2018 ( 125 )

2017 ( 119 )

Custom range...

Search Results: 1 - 10 of 31461 matches for " Eun Ju Lee "
All listed articles are free for downloading (OA Articles)
Page 1 /31461
Display every page Item
Acclimation responses of Tamarix chinensis seedlings related to cold stress
Youngsung Joo,Eun Ju Lee
Journal of Ecology and Field Biology , 2011,
Abstract: The purpose of this study was to investigate the acclimation responses of Tamarix chinensis to cold stress. We evaluatedthe acclimation responses by measuring biomass, daily elongation rate, chlorophyll content, and total soluble carbohydratecontent. The plant samples comprised leaves from seedlings of 2 different ages (8 and 12 weeks); the leaves werecollected 0, 2, and 4 weeks after cold treatment. We found that the cold-treated samples showed reduced daily elongationrates and chlorophyll content. Further, these samples showed more than 8-fold increase in the total soluble carbohydratecontent. However, the seedling ages did not have a significant influence on the growth of cold-treated seedlings.On the basis of these findings, we can conclude that T. chinensis seedlings aged less than 1 year old show acclimationto cold stress by accumulating soluble carbohydrates. This study may help us understand how T. chinensis seedlingsacclimatize to their first cold season.
catena-Poly[[bis(N,N-dimethylformamide-κO)zinc]-μ2-oxalato-κ4O1,O2:O1′,O2′]
Ju Eun Lee,Hong-In Lee
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536811030479
Abstract: In the crystal structure of the title compound, [Zn(C2O4)(C3H7NO)2]n, the ZnII ion is situated on a twofold rotation axis and has a distorted octahedral coordination geometry defined by the O atoms of two dimethylformamide molecules and four O atoms of two bidentate oxalate ligands. The oxalate anion is located on an inversion centre and bridges two metal ions, resulting in a polymeric structure with infinite zigzag chains extending parallel to [010].
Relationship between Plant Species Covers and Soil Chemical Properties in Poorly Controlled Waste Landfill Sites
Kim, Kee Dae,Eun Ju Lee
Journal of Ecology and Field Biology , 2007,
Abstract: The relationships between the cover of herbaceous species and 15 soil chemical properties(organic carbon contents, total N, available P, exchangeable K, Na, Ca and Mg, HCl-extractable Cd, Cr, Cu,Fe, Mn, Ni, Pb and Zn) in nine poorly controlled waste landfill sites in Korea were examined by correlationanalysis and multiple regression equations. Species showed different patterns of correlation between their covervalues and soil chemical properties. The cover of Ambrosia artemisiifolia var. elatior, Aster subulatus var. sandwicensisand Erechtites hieracifolia were negatively correlated with the contents of Fe, Mn and Ni within landfillsoils. Total cover of all species in quadrats was positively correlated with the contents of Cd and negativelycorrelated with the contents of Mn and Fe from stepwise regression analysis with 15 soil properties. Canonicalcorrespondence analysis demonstrated that the distribution of native and exotic plants on poorly controlledlandfills was significantly influenced by the contents of Na and Ca in soils, respectively.
Analysis of apigenin in Blumea balsamifera Linn DC. and its inhibitory activity against aldose reductase in rat lens  [PDF]
Dong Gu Lee, So-Youn Mok, Changsun Choi, Eun Ju Cho, Hyun Young Kim, Sanghyun Lee
Journal of Agricultural Chemistry and Environment (JACEN) , 2012, DOI: 10.4236/jacen.2012.11005
Abstract: To investigate the therapeutic potentials of na- tural sources, stepwise polarity fractions of Blumea balsamifera were tested for their ability to inhibit aldose reductase (AR) activity in rat lenses. Of these, the ethyl acetate (EtOAc) fraction exhibited a unique AR inhibitory activity (IC50 value, 0.11 μg/mL). Apigenin was identified from the active EtOAc fraction and exhibited high AR inhibitory activity (IC50 value, 4.03 μM). The content of apigenin was measured in B. balsamifera (0.47 mg/g) by HPLC/UV analysis. Our result suggests that B. balsamifera could be a useful natural source for the development of a novel AR inhibitory agent against diabetic complications.


Effects of Ascorbic and Citric Acids on CIE Color Values of Fresh-cut Apple Cubes
Li Zuo,Eun Ju Seog,Jun Ho Lee
Journal of Food Technology , 2013,
Abstract: Effects of Ascorbic Acid (AA) and Citric Acid (CA) on the CIE color values of minimally processed apple cubes were investigated. Fresh apples washed and cut into 1.5 cm cubes and treated with AA solution (0.1 and 0.5%, w/v), CA solution (0.1 and 0.5%, w/v), or their combinations (0.1% AA + 0.5% CA, 0.5% AA + 0.1% CA, 0.5% AA + 0.5% CA, w/v). Samples without any treatment were considered as control. All samples were stored in dark at 4 C and RH 90% and color were studied for 9 days. An important reduction in lightness (p< 0.05) was observed throughout storage in the fresh-cut apples for all dipping conditions. On the other hand, a*-, b*- and chroma generally increased during storage regardless of treatments. Treatment of 0.5% AA and the combination of 0.5% AA + 0.5% CA and 0.5% AA + 0.1% CA resulted in less change in those parameters, turned out to be the most effective to prevent the browning reaction.
Color Characteristics of Concentrated Single and Blend Juices as Influenced by Concentration Methods
Eun Ju Seog,Kyoung Suck Sohn,Jun Ho Lee
Journal of Food Technology , 2013,
Abstract: Clarified apple, carrot and orange juices were prepared using ultrafiltration and their single and blend juices were further concentrated using ultrafiltration, freeze-drying and rotary evaporation. Effect of concentration methods on the color of concentrated single and blend juices was investigated. The color properties of concentrated single and blend juices showed that heat concentrated samples using rotary evaporator had significantly lower L*-values than those of the other concentration methods regardless of juice type (i.e., apple, orange or carrot) and blending (p<0.05). The a*-values of heat concentrate juices were lower and b* values were higher than those prepared by UF and vacuum freezing in general. Concentrated carrot or carrot rich juices showed equal or relatively higher L*-values, while concentrated apple or apple rich juices showed equal or lower L*-values than those of the other single and blend juices regardless of concentration methods. Concentrated carrot or carrot rich juices showed relatively lower b*-values in general, while concentrated apple or apple rich juices showed higher b*-values than those of the other single and blend juices in UF and vacuum-freeze concentration.
Use of Length Heterogeneity Polymerase Chain Reaction (LH-PCR) as Non-Invasive Approach for Dietary Analysis of Svalbard Reindeer, Rangifer tarandus platyrhynchus
Sungbae Joo, Donguk Han, Eun Ju Lee, Sangkyu Park
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0091552
Abstract: To efficiently investigate the forage preference of Svalbard reindeer (Rangifer tarandus platyrhynchus), we applied length-heterogeneity polymerase chain reaction (LH-PCR) based on length differences of internal transcribed spacer (ITS) regions of ribosomal RNA (rRNA) to fecal samples from R. tarandus platyrhynchus. A length-heterogeneity (LH) database was constructed using both collected potential food sources of Svalbard reindeer and fecal samples, followed by PCR, cloning and sequencing. In total, eighteen fecal samples were collected between 2011 and 2012 from 2 geographic regions and 15 samples were successfully amplified by PCR. The LH-PCR analysis detected abundant peaks, 18.6 peaks on an average per sample, ranging from 100 to 500 bp in size and showing distinct patterns associated with both regions and years of sample collection. Principal component analysis (PCA) resulted in clustering of 15 fecal samples into 3 groups by the year of collection and region with a statistically significant difference at 99.9% level. The first 2 principal components (PCs) explained 71.1% of the total variation among the samples. Through comparison with LH database and identification by cloning and sequencing, lichens (Stereocaulon sp. and Ochrolechia sp.) and plant species (Salix polaris and Saxifraga oppositifolia) were detected as the food sources that contributed most to the Svalbard reindeer diet. Our results suggest that the use of LH-PCR analysis would be a non-invasive and efficient monitoring tool for characterizing the foraging strategy of Svalbard reindeer. Additionally, combining sequence information would increase its resolving power in identification of foraged diet components.
Quercetin Inhibits IL-1β-Induced Inflammation, Hyaluronan Production and Adipogenesis in Orbital Fibroblasts from Graves' Orbitopathy
Jin Sook Yoon, Hyun Jung Lee, Soo Hyun Choi, Eun-Ju Chang, Sang Yeul Lee, Eun Jig Lee
PLOS ONE , 2011, DOI: 10.1371/journal.pone.0026261
Abstract: Management of Graves' orbitopathy (GO) is challenging, as no reliable, specific, and safe medical therapeutic agents have yet been developed. We investigated the effect of quercetin in primary cultured orbital fibroblasts from GO, targeting pathways of inflammation, aberrant accumulation of extracellular matrix macromolecules, and adipose tissue expansion. Quercetin significantly attenuated intercellular adhesion molecule-1 (ICAM-1), interleukin (IL) -6, IL-8, and cyclooxygenase (COX) -2 mRNA expression, and inhibited IL-1β-induced increases in ICAM-1, IL-6, and IL-8 mRNA. Increased hyaluronan production induced by IL-1β or tumor necrosis factor-α was suppressed by quercetin in a dose- and time-dependent manner. Treatment with noncytotoxic doses of quercetin inhibited accumulation of intracytoplasmic lipid droplets and resulted in a dose-dependent decrease in expression of peroxisome proliferator-activated receptor γ, CCAAT/enhancer-binding protein (C/EBP) α, and C/EBPβ proteins. In conclusion, inhibition of inflammation, hyaluronan production, and adipogenesis by the natural plant product quercetin in vitro provides the basis for further study of its potential use in the treatment of GO.
Comparison of Perinatal Outcomes in Late Preterm Spontaneous and Indicated Preterm Birth Neonates  [PDF]
Dasom Chun, Eun Hye Yoo, Ji Young Lee, Hyun Mi Kim, Mi Ju Kim, Won Joon Seong, Hyun-Hwa Cha
Open Journal of Obstetrics and Gynecology (OJOG) , 2016, DOI: 10.4236/ojog.2016.612083
Abstract: Objective: We aimed to compare the perinatal outcomes in late preterm spontaneous and indicated birth neonates. Methods: We studied 289 late preterm births, classified as either aspontaneous late preterm birth (sLPTB) group (preterm labor with intact membranes and preterm premature rupture of membranes) or an indicated late preterm birth (iLPTB) group (hypertensive disorder in pregnancy, placental causes, and maternal diseases), according to the delivery indication. We then compared the maternal and neonatal characteristics and perinatal outcomes, including the Apgar score, admission to the neonatal intensive care unit (NICU) or special care nursery (SCN), duration of NICU stay, and the rate of composite morbidity (antibiotic use, hypoglycemia, hypocalcemia, hyperbilirubinemia requiring phototherapy, respiratory support, and respiratory distress syndrome). Results: A total of 198 neonates were in the sLPTB group and 91 were in the iLPTB group. In spite of greater gestational age at the time of delivery in the iLPTB group, the mean birth weight was lower than that in the sLPTB group. Additionally, the iLPTB group showed lower Apgar scores, and higher rates of NICU or SCN admission, respiratory support, and hypoglycemia, but there was no difference in the rate of composite morbidity between the two groups. Conclusion: iLPTB neonates had lower birth weights despite greater gestational age than those in the sLPTB group, but there was no difference in the rate of composite morbidity between the two groups.
The validity of the canadian triage and acuity scale in predicting resource utilization and the need for immediate life-saving interventions in elderly emergency department patients
Ju Lee, Sang Oh, Eun Peck, Jung Lee, Kyu Park, Soo Kim, Chun Youn
Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine , 2011, DOI: 10.1186/1757-7241-19-68
Abstract: We reviewed the medical records of consecutive patients who were 65 years of age or older and presented to a single academic ED within a three-month period. The CTAS triage scores were compared to actual patient course, including disposition, discharge outcome and resource utilization. We calculated the sensitivity and specificity of the CTAS triage for identifying patients who received an immediate intervention.Of the 1903 consecutive patients who were ≥ 65 years of age, 113 (5.9%) had a CTAS level of 1, 174 (9.1%) had a CTAS level of 2, 1154 (60.6%) had a CTAS level of 3, 347 (18.2%) had a CTAS level of 4, and 115 (6.0%) had a CTAS level of 5. As a patient's triage score increased, the severity (such as mortality and intensive care unit admission) and resource utilization increased significantly. Ninety-four of the patients received a life-saving intervention within an hour following their arrival to the ED. The CTAS scores for these patients were 1, 2 and 3 for 46, 46 and 2 patients, respectively. The sensitivity and specificity of a CTAS score of ≤ 2 for identifying patients for receiving an immediate intervention were 97.9% and 89.2%, respectively.The CTAS is a triage tool with high validity for elderly patients, and it is an especially useful tool for categorizing severity and for recognizing elderly patients who require immediate life-saving intervention.Emergency department (ED) overcrowding is a serious problem worldwide [1-4]. The increase in the length of waiting lists for hospital admission in ED together with an increasing influx of new patients can cause severe overcrowding [5]. Meanwhile, in several countries (including South Korea), the exacerbation of an ageing society due to an increase in life expectancy is on the rise and is a social problem; in addition, ED visits by the elderly are increasing as well. What is characteristic among elderly patients is that their conditions are often more severe and they have a higher rate of admission to hospital
Page 1 /31461
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.