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Search Results: 1 - 10 of 21418 matches for " Il Doo Kim "
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Dietary exposure estimates of trace elements in selected agricultural products grown in greenhouse and associated health risks in Korean population  [PDF]
Won-Il Kim, Ji-Ho Lee, Anitha Kunhikrishnan, Doo-Ho Kim
Journal of Agricultural Chemistry and Environment (JACEN) , 2013, DOI: 10.4236/jacen.2013.23006
Abstract: This study focuses on the dietary exposure of trace elements (TEs) through the intake of various agricultural products grown in greenhouse, and its corresponding health risks at different age categories in Korean population. It was observed that the mean contents of TEs found in selected agricultural products were well below their guidelines. Mean and 95th percentile intake estimates of TEs were ranged from 0.02 to <1.00 μg/kg/day in Korean population of all age categories, which were well below their reference dose and provisional tolerable daily intake values. Although the mean intakes of Cd at ages 1 - 2 were the highest with 0.72, it was still below the guideline value of 1.0 μg/kg b.w./day. The target hazard quotient values for respective TEs were less than 1.0 inall age categories, indicating that health risks of TEs through intake of single agricultural product were absent. However, the hazard index value of Cd for ages 1 - 2, based on 95th percentile estimates through intake of agricultural products was 1.88, which may cause some adverse health effects. Although, the health risks of TEs through the intake of selected agricultural products were not significant in Korean population of all age categories, this study cautions
that considerable attention should be paid to the potential health risks of TEs through intake of various foodstuffs and other exposure pathways.


Biodegradable stent  [PDF]
Doo Yeon Kwon, Jae Il Kim, Da Yeon Kim, Hwi Ju Kang, Bong Lee, Kang Woo Lee, Moon Suk Kim
Journal of Biomedical Science and Engineering (JBiSE) , 2012, DOI: 10.4236/jbise.2012.54028
Abstract: The bare metal stent (BMS) used in the blood vessel caused the restenosis after the operation due to formation and proliferation of neointimal. Recently, as a method to overcome the problems of BMS, drug eluting stent (DES) is developed and being applied to human body which has drug reducing restenosis applied on the metal surface. DES has the advantage of greatly reducing the restenosis after the operation; however, metal stent remains in the body after the drug is released causing issues such as late thrombosis and restenosis so that currently the attention is increasing for biodegradable materials that reduce restenosis and thrombosis by degrading as a certain amount of time passes after the drug is released by the stent material. In this review, the study trend of biodegradable stent will be explained.
A COMPARISON OF IMPROVED AODV ROUTING PROTOCOL BASED ON IEEE 802.11 AND IEEE 802.15.4
YU-DOO KIM,IL-YOUNG MOON,SUNG-JOON CHO
Journal of Engineering Science and Technology , 2009,
Abstract: Recently, wireless network industry for the ubiquitous generation is growing quickly. Especially, IEEE 802.15.4 is one of special issues of the networking technology for sensor network. Then, many researchers are studying it for enhanced performance. But many researchers are not focusing on developing routing protocol. So we had proposed improved AODV routing protocol in previous research. But it had studied about performance analysis based on IEEE 802.11. In this paper, we proposed improved routing protocol using AODV (Ad hoc On-demand Distance Vector) for sensor network. The simulation result is analyzed and compared based on IEEE 802.11 and IEEE 802.15.4.
Analysis of Skin Parameters of Korean Men According to the Parts of the Body for Integumentary Physiotherapy Research  [PDF]
So-Jung Kim, Ju-Hyun Kim, Jeong-Uk Lee, Mee-Young Kim, Lim-Kyu Lee, Byoung-Sun Park, Seung-Min Yang, Won-Deok Lee, Ji-Woong Noh, Yong-Sub Shin, Doo-Ho Kim, Il-Hyun Kim, Junghwan Kim
Health (Health) , 2018, DOI: 10.4236/health.2018.104038
Abstract: Studies have demonstrated that some cutaneous biophysical properties vary with the part of the body. The results to date of skin conditions in human skin of multiple parts of the body have not yet been well established. In this study, we assessed the differences in the skin’s sebum, moisture, pores, wrinkles, pigmentation, and elasticity of each body part in Korean men in their 20s. A total of 34 healthy men were enrolled. A Skin Diagnosis Meter was used to measure the skin’s surface sebum, moisture, pores, wrinkles, pigmentation, and elasticity of each body part. The sebum content was significantly higher on the face than at other sites. Moisture was significantly high on the feet. Pores were significantly high on the face. Wrinkles were significantly high on the face. Pigmentation was high on the face and neck, but not significantly. Elasticity was significantly high on the hands. In the correlation analysis results, sebum and pore were positively correlated, but sebum and moisture and wrinkle and elasticity were negatively correlated. For nearly the first time, this study resulted in systematic reference values for standardized biophysical measuring methods and body parts reflecting the skin physiology of healthy South Korean men. The results show that skin’s surface sebum, moisture, pores, wrinkles, pigmentation, and elasticity vary with the part of the body.
Characteristic Dermatologic Changes in the Condition of Skin after Ultrasonic Stimulation in Healthy Korean Men  [PDF]
So-Jung Kim, Seung-Min Yang, Ju-Hyun Kim, Jeong-Uk Lee, Mee-Young Kim, Lim-Kyu Lee, Byoung-Sun Park, Won-Deok Lee, Ji-Woong Noh, Yong-Sub Shin, Doo-Ho Kim, Il-Hyun Kim, Junghwan Kim
Journal of Cosmetics, Dermatological Sciences and Applications (JCDSA) , 2018, DOI: 10.4236/jcdsa.2018.84021
Abstract: The aim of our study was to recognize different skin conditions of the face and neck using six biophysical parameters and to show the changes after the application of ultrasonic stimulation (US). We assessed the differences in the sebum, moisture, pores, wrinkles, pigmentation, and elasticity of the skin in the face and neck regions. A total of 30 healthy men in their 20s were enrolled. We used a skin diagnosis meter to assess the state of the skin. The sebum and pores of the face were more significant than in the neck. The amount of moisture in the U-zone was significantly higher than in other areas. Statistical differences were found between the pre-and post-measure-ment values in the sebum, moisture, wrinkles and pigmentation. Wrinkles and pigmentation were positively correlated. Our data showed that the changes in skin condition are associated with external stimulants. The effect of US on skin may differ depending on the part of the body, and some biophysical properties of skin vary depending on the location on the body.
Analysis of Interferential Current Therapy-Induced Skin Changes in Healthy Korean Men  [PDF]
So-Jung Kim, Seung-Min Yang, Ju-Hyun Kim, Jeong-Uk Lee, Mee-Young Kim, Lim-Kyu Lee, Byoung-Sun Park, Won-Deok Lee, Ji-Woong Noh, Yong-Sub Shin, Doo-Ho Kim, Il-Hyun Kim, Kong-Sook Noh, Junghwan Kim
Natural Science (NS) , 2018, DOI: 10.4236/ns.2018.1011043
Abstract: We examined the changes in numerous skin conditions before and after the ap-plication of interferential current therapy to various regions of healthy male bodies. In this study, we assessed the differences in the skin’s sebum, moisture levels, pores, wrinkles, pigmentation, and elasticity on the shoulders, lower back, and the knees of Korean males in their 20s. A total of 30 healthy males were in-cluded in the study. We used a skin diagnosis meter as a device for measuring the state of the skin. A statistical difference was found when comparing the pre- and post-measurement values in regards to the moisture levels, wrinkles, and pig-mentation. In the correlation analysis results, the sebum and pigmentation, moisture levels and wrinkles, moisture levels and pigmentation, and moisture levels and elasticity were all positively correlated, respectively. The results of this study partially suggest that a change in skin condition is associated with ex-ternal stimulation. The study also found that the effects of the application of in-terferential current therapy on the various skin conditions may differ depending on the region of the body that the application is conducted as well.
Nonsurgical management of a tricuspid valvular pedunculated papillary fibroelastoma
Sang-Hoon Seol, Dong-Soo Kim, Yang-Chun Han, Ki-Hun Kim, Young-Bok Kim, Dong-Kie Kim, Ung-Kim, Tae-Hyun Yang, Dae-Kyeong Kim, Doo-Il Kim
Cardiovascular Ultrasound , 2009, DOI: 10.1186/1476-7120-7-44
Abstract: A cardiac mass of the heart is not rare. It is usually found incidentally on routine echocardiography, which provides non-invasive diagnosis of a possible mass with information on the location, attachment, shape, size, and mobility. Echocardiography plays a very important role in the diagnosis of intracardiac masses. Papillary fibroelastoma (PFE) is a benign cardiac tumor that has the potential to cause life-threatening embolic events. Surgical excision of the tumor is recommended for all patients who develop symptoms, but the treatment of asymptomatic patients with an echocardiographically identified PFE is still controversial [1].A 25-year-old woman was referred from the division of nephrology for evaluation and management of a cardiac mass found on a transthoracic echocardiogram (TTE). The patient had a kidney transplant15 days ago for lupus nephritis. Three years earlier, the echocardiogram revealed mild mitral regurgitation, but no mass was noted on the tricuspid valve and there was no transvalvular blood flow abnormality. Chest X-ray, physical examination, and electrocardiogram were within normal range. Laboratory data, including work-up for infective endocarditis and systemic lupus erythematosus (SLE) were unremarkable except for antinuclear antibodies (ANA) 1:320 (homogenous type) and anti-dsDNA antibodies (+). The ejection fraction was normal and mild mitral regurgitation was noted. The TTE showed an incidental finding of a 1.1 × 0.9 cm mass attached to the septal leaflet of the tricuspid valve (Figure 1) [see Additional file 1]. Transesophageal echocardiography (TEE) revealed a highly mobile, oval mass that had a well-demarcated border with a stalk (Figure 2) [see Additional file 2]. We considered surgical removal of this mass. However, given the patients' co-morbidities and her refusal to undergo surgery, she was followed with conservative treatment, including anticoagulation with heparin for two weeks. However, the mass remained unchanged. The patient wa
Mineralization of Petroleum Contaminated Wastewater by Co-Culture of Petroleum-Degrading Bacterial Community and Biosurfactant-Producing Bacterium  [PDF]
Bo young Jeon, Il Lae Jung, Doo Hyun Park
Journal of Environmental Protection (JEP) , 2011, DOI: 10.4236/jep.2011.27102
Abstract: Activity of a crude biosurfactant extracted from the culture fluid of Serratia sp. that was isolated from riverbed soil was shown to increase in proportion to the cultivation time, and was higher at pH 8 than at pH 7. Serratia sp. grew in the mineral-based medium with soybean oil but was not with kerosene-diesel. The petroleum-degrading bacteria—Acinetobacter sp., Pseudomonas sp., Paracoccus sp., and Cupriavidus sp.—were isolated from a specially designed enrichment culture. The efficiency of mineralization of wastewater contaminated with kerosene and diesel (WKD) by the petroleum-degrading bacterial community (PDBC) was enhanced significantly by addition of the crude biosurfactant. The efficiency of mineralization of the WKD was also about 2 times boosted by co-culture of Serratia sp. and PDBC. Bacterial community of Serratia sp. and PDBC co-cultivated in the WKD was maintained for at least 8 days according to the TGGE pattern of 16S rDNA obtained from the bacterial culture. In conclusion, the co-culture of Serratia sp. and PDBC is an applicable technique for the mineralization of wastewater contaminated with petroleum, which may substitute for chemical or biological surfactant.
Enrichment and Isolation of CO2-Fixing Bacteria with Electrochemical Reducing Power as a Sole Energy Source  [PDF]
Bo Young Jeon, Il Lae Jung, Doo Hyun Park
Journal of Environmental Protection (JEP) , 2012, DOI: 10.4236/jep.2012.31007
Abstract: Enrichment of bacteria capable of growing with electrochemical reducing power and CO2 was accomplished using a plate-type electrochemical bioreactor (PEB). A bacterial source obtained from wastewater treatment reactant and forest soil was cultivated on carbonate-based mineral agar medium prepared in the PEB (PEB-carbonate agar). According to the pyrosequencing analyses, the abundance of Betaproteobacteria and Gammaproteobacteria at the phylum level, and Achromobacter, Alcaligenes, and Pseudomonas at the genus level were selectively increased after the electrochemical enrichment culture. Finally, one genus of bacterium that was autotrophically grown on the PEB-carbonate agar was identified as Alcaligenes. This bacterium may be useful to fix atmospheric CO2 with electrochemical energy obtained from the solar cell.
Conversion of Carbon Dioxide to Metabolites by Clostridium acetobutylicum KCTC1037 Cultivated with Electrochemical Reducing Power  [PDF]
Bo Young Jeon, Il Lae Jung, Doo Hyun Park
Advances in Microbiology (AiM) , 2012, DOI: 10.4236/aim.2012.23040
Abstract: In this research, metabolic fixation of CO2 by growing cells of C. acetobutylicum cultivated with electrochemical reducing power was tested on the basis of the metabolites production and genes expression. In cyclic voltammetry, electrochemical oxidation and reduction reaction of neutral red (NR) immobilized in intact cells of C. acetobutylicum was stationarily repeated like the soluble one in the condition without CO2 but the electrochemical reduction reaction was selectively increased by addition of CO2. In electrochemical bioreactor, the modified graphite felt cathode with NR (NR-cathode) induced C. acetobutylicum to generate acetate, propionate, and butyrate from CO2 in defined medium. When H2 and CO2 were used as an electron donor and an electron acceptor, respectively, C. acetobutylicum also produced the same metabolites in a defined medium. C. acetobutylicum was not grown in the defined medium without substituted electron donors (H2 or electrochemical reducing power). C. acetobutylicum cultivated with electrochemical reducing power produced more butyrate than acetate in complex medium but produced more acetate than butyrate in defined medium. The genes of encoding the enzymes catalyzing acetyl-CoA in C. acetobutylicum electrochemically cultivated in defined medium than conventionally cultivated in complex medium. These results are a clue that C. acetobutylicum may metabolically convert CO2 to metabolites and produce free energy from the electrochemical reducing power.
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