• Journal of Korean Society of Water and Wastewater
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• v.14 no.1
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• pp.37-44
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• 2000

Laboratory experiments were conducted to investigate the performances of anaerobic filters packed with ceramic tube and pall-ring media treating a dairy waste. The media packing volume was 65% of effective volume of anaerobic filter. Organics removals of anaerobic filters were maintained above 80% even at an organics loading rate of $10kgCOD/m^3/d$, and this was comparable to aerobic treatment of organic wastes. Organics removals of the ceramic tube anaerobic filters were always lower than those of the pall-ring anaerobic filters due to intrinsic physical property of ceramic tube, especially lower void space which caused to clogging and entrapment of biogas, substrate transfer limitation, and irregular evolution of biogas leading to loss of solids and biomass. This was clearly observed in higher concentration of TSS in the effluent from the ceramic tube anaerobic filter despite of higher retention capacity of TSS compared with pall-ring media. Vertical distribution of organics and solids in the filters showed above 90% of organics and solids in influent were removed below 20% of reactor height, and 50% of remaining organics and solids were removed though media packing zone. Effluent quality from the anaerobic filter was heavily depended on media itself as well as suspended biomass formed below media. It is therefore concluded that the type of media played an important role in biomass accumulation arid gas-liquid-solid separation efficiency. Type of media did not affect the start-up behaviors of the anaerobic filter, and supernatant from anaerobic digested sludge showed a good performance as a seeding materials.

• Food Science of Animal Resources
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• v.34 no.2
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• pp.221-229
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• 2014

Chicken breast meat was injected with calcium chloride alone and in combination with lactic acid (0.01% and 0.002%, respectively). The inhibitory effects of the treatments on microbial growth were determined in the injected chicken breast meat stored at $4^{\circ}C$ under aerobic packaging condition for 0, 3, and 7 d. Calcium chloride combined with 0.002% and 0.01% lactic acid reduced microbial counts by 0.14 and 1.08 Log CFU/g, respectively, however, calcium chloride alone was unable to inhibit microbial growth. Calcium chloride combined with 0.01% lactic acid was the most effective antimicrobial treatment and resulted in the highest initial redness value. Calcium chloride alone and combined with lactic acid suppressed changes in pH and the Hunter color values during storage. However, injection of calcium chloride and lactic acid had adverse effects on lipid oxidation and sensory characteristics. The higher TBARS values were observed in samples treated with calcium chloride and lactic acid when compared to control over the storage period. Addition of calcium chloride and lactic acid resulted in lower sensory scores for parameters tested, except odor and color, compared to control samples. Therefore, the formulation should be improved in order to overcome such defects prior to industrial application.

• Korean Journal of Clinical Pharmacy
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• v.27 no.2
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• pp.83-91
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• 2017

Background: Piperacillin/tazobactam (TZP) is an antibiotic against a broad spectrum of gram-positive, gram-negative, and aerobic and anaerobic strains of bacteria. Due to changes in its pharmacokinetic and pharmacodynamic parameters by TZP-treated patients' renal functions and obesity, it is important to administrate and monitor TZP based on their renal functions and Body Mass Index (BMI) levels. The purpose of this study was to determine the appropriateness of administration doses of TZP based on renal functions of obese cancer patients in a tertiary hospital. Methods: This study was retrospectively conducted with obese cancer patients with $BMI{\geq}30kg/m^2$ in a tertiary hospital, Korea from September 2004 to August 2014. Data were collected through Electronic Medical Record (EMR) which contained laboratory data and TZP dosing of each patient. Results: Among 7,058 patients during the study period, 102 prescriptions were selected based on inclusion and exclusion criteria and classified by their renal functions. Although TZP should be used based on patients' renal functions to adjust its dose, its initial dose and dosing interval were consistently used without considering patients' renal functions on a regular basis. Especially, in the comparison with FDA dosing standard of TZP, approximately twice patients with $20mL/min{\leq}CrCl{\leq}40mL/min$ received domestically 4.5 g instead of 2.25 g as the TZP starting dose. Conclusion: The appropriate doses of TZP were administered to almost all of obese cancer patients; however, the recommended TZP dose was different between Korea and other countries by twice the amount. Further related studies are necessary to clearly determine the results, to optimize TZP treatment for obese patients with cancer in clinical practice, and to design and develop new TZP formulations for them in pharmaceutical industry.

• Biomedical Science Letters
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• v.20 no.2
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• pp.77-84
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• 2014

Periodic analysis of local epidemiologic data of prevalent pathogens of blood culture can provide clinicians with relevant information to guide empirical antibiotic therapy. In this study, we analyzed a pattern of change of causative microorganisms and antimicrobial resistance at a tertiary medical center in Chungcheong province from 2003 to 2012, retrospectively. Of 70,258 blood specimens cultured, 6,063 (8.6%) were positive. Among the positive isolates, 95.9% were aerobic or facultative anaerobic bacteria, 0.1% were anaerobes, and 3.9% were fungi. Coagulase-negative Staphylococci (CoNS) (32.9%), Escherichia coli (16.7%), Staphylococcus aureus (9.1%), Klebsiella pneumoniae (6.4%), and ${\alpha}$-hemolytic Streptococcus (5.9%) were commonly isolated bacteria, and Candida albicans (1.4%) was the most commonly isolated fungi. Enterococcus faecium progressively increased but Streptococcus pneumoniae, Acinetobacter baumannii and Proteus species gradually decreased over a period of 10 years. The multidrug-resistant microorganisms such as methicillin-resistant S. aureus (MRSA), vancomycin-resistant enterococci (VRE), cefotaxime-resistant E. coli, imipenem-resistant Pseudomonas aeruginosa (IRPA) and imipenem-resistant A. baumannii (IRAB), were significantly increased. Therefore, there is a need for a more strict control of antibiotics and a more updated guideline for the treatment of bloodstream infection.

• Journal of the Korea Organic Resources Recycling Association
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• v.7 no.2
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• pp.93-104
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• 1999

Existing composting system was improved to have a high performance for organic degradation, deodorization and energy reduction. Compared with conventional devices, this developed system uses the heat recovered from platinum catalytic tower by three times heat exchange in which 65% of exhaust gas was recirculated. Evaporation of water was made easy by maintaining negative pressure in entire system. It was possible for reaction to be maintained steadily by microorganism agent. The optimum mixing volume ratio of garbage to sawdust was 15:1 contrary to 20:1 in conventional one. Moreover, aerobic condition was maintained efficiently. Effects obtained by using a inner circulation system were as follows. It was possible to reduce the ammonia causing offensive odor and verified that consumption of electricity cut down to 1/3 with reduction of exhaust gas inflowing. According to this inner circulation, the optimum air flow was $0.44m^3$ to 100kg treatment capacity. The electricity consumption was changed in proportion to inflowing air volume.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.40 no.4
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• pp.237-243
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• 2016

It is necessary to investigate the input power as well as the mass transfer characteristics of the aeration process in order to improve the energy efficiency of an aerobic water treatment. The objective of this study is to experimentally investigate the effect of orifice nozzle design and input power on the flow and mass transfer characteristics of a vertical two-phase flow. The mass ratio, input power, volumetric mass transfer coefficient, and mass transfer efficiency were calculated using the measured data. It was found that as the input power increases the volumetric mass transfer coefficient increases, while the mass ratio and mass transfer efficiency decrease. The mass ratio, volumetric mass transfer coefficient, and mass transfer efficiency were higher for the orifice configuration with a smaller orifice nozzle area ratio. An empirical correlation was proposed to estimate the effect of mass ratio, input power, and Froude number on the volumetric mass transfer coefficient.

• Journal of Digital Convergence
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• v.15 no.5
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• pp.339-344
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• 2017

This study aims to investigate how 65 years old and older men's regular exercise can affect their lymphocyte, monocyte, eosinophil, neutrophil, basophil, IgG, IgA, and IgM using meta-analysis of the related data from 8 literatures and 35 case studies which were published from 2002to 2012. The subjects with no regular exercise experience were selected for the analysis regarding the homogeneity of the background characteristics of elderly subjects. In addition, the exercise treatment was about 60 minutes per exercise three times a week for 12 to 24 weeks. Exercise intensity was a moderate aerobic exercise that the subject could endure. Regular exercise of the elderly had a mean effect size of 0.523 after the exercise. This means that immune variables before exercise increase by about 20% after regular exercise. Since regular exercise by the elderly activates the immune system, it has a beneficial effect on health.

• Journal of The Korean Society of Integrative Medicine
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• v.7 no.4
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• pp.283-290
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• 2019

Purpose : The purpose of this study was to find out how changes in body shape of obese patients could be affected by the combined management of diet and psychotherapy along with exercise therapy to control energy imbalance, the cause of obesity. Methods : In this study, the aerobic exercise program was conducted on 12 industrial workers of "D" company for a total of eight weeks for obese patients with a high body mass index (25 kg/㎡ or higher). The experimental group did not apply the program three times a week. The body type analysis was carried out using the body analyzer (Inbody 770, Inbody, Korea) and blood test and psychological test were performed after 8 weeks of exercise before and after exercise. Results : The results of the group showed a change in weight loss of 6.03 kg (p=.000) on average, which is nearly 10 % of the change in weight. It was also shown that the BMI (body mass index) decreased by 1.76 kg/㎡ (p=.000). Abdominal fat (AO) is also 0.14 % (p=.000), waist circumference (WC, 12.72 cm, p=.000), internal fat (VF, 25.12 %, p=.000), liver function levels AST (5.47 U/L, p=.04), ALT (13.64 U/L, p=.000), total cholesterol, pTC -14.22. Conclusion : Based on the results of this study, the obesity management program will be able to maximize the effects of obesity control if exercise programs and psychotherapy are combined.

• Korean Journal of Microbiology
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• v.37 no.1
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• pp.66-71
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• 2001

An aerobic microbiological process was tested in 1.5 L stirred tank reactors for the treatment of dinitrotoluenes (DNTs)[e.g., 2.4-dinitrotoluene (2,4-DNT), 2,6-dinitrotoluene (2,6-DNT)] in the test culture of Stenotrophomonas maltophilia, which had previously characterized. Both 2,4-DNT and 2,6-DNT were completely degraded within 10 days and 14 days of incubation, respectively. Addition of the secondary carbon was essential to degrade DNTs, and little degradation was achieved in the absence of the secondary carbons. The effect of additional nitrogens on the degradation of DNTs was evaluated. Complete degradation of DNTs was observed in the absence of any additional nitrogens, whereas DNTs were partially degraded in the growth media with additional nitrogens. Both HPLC and GC-MS were used to detect and verify the residual DNTs and their intermediates. As the results, the HPLC and GC-MS chromatograms demonstrated that the both parent compounds, 2, 4-DNT and 2,6-DNT, and respective intermediates, 2-amino-4-nitrotoluene and 2-amino-6-nitrotoluene, could be successfully identified under the analytical conditions.

• Applied Biological Chemistry
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• v.33 no.2
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• pp.133-137
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• 1990

The effects of soil environmental conditions on the rate of degradation of fungicide IBP (Iprobenfos, S-benzyl O, O-diisopropyl phosphorothioate) in the soils under flooded condintions were examined in the laboratory. IBP in soil was degraded more slowly under flooded conditions than under upland conditions. The degradation greatly varied among soils, and the degradation rate was negatively correlated with the content of soil organic matter. Degradation of IBP was influenced by the soil temperature and the amount of IBP applied. The rate of degradation in soil was remarkably inhibited by the amendment of rice straw but not affected by the treatment of mixed-fertilizer, and insecticide fenitrothion and herbicide butachlor. The degradation of IBP was assumed to be due to microorganisms, especially aerobic microbes, as no degradation was observed in sterilized soil.