• 한국생물공학회:학술대회논문집
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• 2000.11a
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• pp.549-552
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• 2000

A microorganism which can desulfurize dibenzothiophene (DBT) to 2-hydroxybiphenyl (2-HBP) was isolated from coal samples. The rate of DBT desulfurization was enhanced by the presence of yeast extract. In the case of DBT desulfurization by resting cells the rate and extent of 2-HBP production was enhanced with the addition of Tween 80.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2002.11a
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• pp.402.2-402
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• 2002

In this paper, the numerical analysis of beam resting on hyperbolic Winkler elastic foundation by differential transformation is performed. Accordig to the change of parameter of hyperbolic Winkler elastic foundation, beam deformation is computed when the boundary conditions are clamped-clamped, pined-pined and clamped-free.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2005.10a
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• pp.211-212
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• 2005

Recently the number of university has been increased rapidly and the number of student who want to enter the university has been decreased. So every university try to provide resting place and student lounge for their survival. this project was designed to provide the student more convenient and comfortable resting place. this lounge is placed in the library which is the main space and the most useful place in the university. So the design concept is to provide the space which has young and bright and also useful so the student can feel high-tech interior design.

• Tuberculosis and Respiratory Diseases
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• v.46 no.2
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• pp.204-214
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• 1999

Background: Resting pulmonary function tests(PFTs) are routinely used in the evaluation of pulmonary impairment/disability. But the significance of the cardiopulmonary exercise test(CPX) in the evaluation of pulmonary impairment is controvertible. Many experts believe that dyspnea, though a necessary part of the assessment, is not a reliable predictor of impairment. Nevertheless, oxygen requirements of an organism at rest are different from at activity or exercising, and a clear relationship between resting PFTs and exercise tolerance has not been established in patients with chronic pulmonary disease. As well, the relationship between resting PFTs and dyspnea is complex. To investigate the relationship of dyspnea, resting PFTs, and CPX, we evaluated the patients of stabilized chronic pulmonary disease with clinical dyspnea rating(baseline dyspnea index, BDI), resting PFTs, and CPX. Method: The 50 patients were divided into two groups: non-severe and severe group on basis of results of resting PFTs(by criteria of ATS), CPX(by criteria of ATS or Ortega), and dyspnea rating(by focal score of BDI). Groups were compared with respect to pulmonary function, indices of CPX, and dyspnea rating. Results: 1. According to the criteria of pulmonary impairment with resting PFTs, $VO_2$max, and focal score of BDI were significantly low in the severe group(p<0.01). According to the criteria of $VO_2$max(ml/kg/min) and $VO_2$max(%), the parameters of resting PFTs, except $FEV_1$ were not significantly different between non-severe and severe(p>0.05). According to focal score($FEV_1$(%), FVC(%), MW(%), $FEV_1/FVC$, and $VO_2$max were significantly lower in the severe group(p<0.01). However, in the more severe dyspneic group(focal score<5), only $VO_2$max(ml/kg/min) and $VO_2$max(%) were low(p<0.01). $FEV_1$(%) was correlated with $VO_2$max(%)(r=0.52;p<0.01), but not predictive of exercise performance. The focal score had the correlation with max WR(%) (r=0.55;p<0.01). Sensitivity and specificity analysis were utilized to compare the different criteria used to evaluate the severity of pulmonary impairment, revealed that the classification would be different according to the criteria used. And focal score for dyspnea showed similar sensitivity and specificity. Conclusion : According to these result, resting PFTs were not superior to rating of dyspnea in prediction of exercise performance in patients with chronic pulmonary diseases and less correlative with focal score for dyspnea than $VO_2$max and max WR. Therefore, if not contraindicated, CPX would be considered to evaluate the severity of pulmonary impairment in patients with chronic pulmonary diseases, including with severe resting PFTs. Current criteria used to evaluate the severity of impairment were insufficient in considering the degree of dyspnea, so new criteria, including the severity of dyspnea, may be necessary.

• Journal of the Korea Furniture Society
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• v.26 no.1
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• pp.61-70
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• 2015

There is an increasing trend each year in the number of subway users due to increase in the traffic volume. As the number of train service has risen, the subway drivers are given heavy work and from the same, are put at risk of mental health deterioration due to stress. As this is directly connected to safety, there is an urgent need for improvement of the situation. Therefore, as a way to appropriately relieve such stress, resting space where mental and physical energy can be recharged is necessary. Thus, this research conducted a survey of demand with subway drivers as subjects in order to provide resting space that can offer healthy rest and increase work effectiveness. 50 subway drivers were the subjects of this survey. As a result of analyzing the contents of the survey, environmental satisfaction was shown to be the lowest compared to psychological and morphological satisfaction. In the case of sleeping room, they wanted more comfortable and individual space. And the waiting room had the highest rate of usage frequency. The storage space was where the subway drivers showed the strongest attachment and was shown to be the only personal space. Most were shown to be satisfied with the outdoor space, but it had the lowest usage frequency. In addition, it is nessasery customized storage cabinet designed for subway drivers should be produced, which can effectively arrange the limited space. I hope that these direction of improvement can increase the healthy rest and work effectiveness of the locomotive engineers as it is directly being connected to the health and safety of the citizens.

• Korean Institute of Interior Design Journal
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• v.19 no.4
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• pp.66-73
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• 2010

The purpose of this study is to develop the basis data for methods of the plan to make the office space of the psychological environment by survey of preference to users in Department Store. The results are as follows : First, we could know that the space plan has to be considered the privacy and sociality for the psychological environment in office space. Second, we could know that there are efficient methods of space plan to use the cutoff division by partitions, the psychological division by furniture and the sensitive division by material for privacy in office and resting space. For sociality, there are efficient arrangement methods to plan by division type in office space and by opening type in resting space. And it is good method to use by color that is one in esthetical elements. Third, if we considered users, it is good method to use partitions to cutoff from the floor to the ceiling for privacy in office space and to use movable furnitures to cutoff for privacy in resting space. Forth, we could know that there is the difference in methods of space plan to be preferred by user's variables for privacy and sociality in office and resting spaces. Thus, i think that we have to study considering user's variables and types of department store.

• The Journal of the Korea Contents Association
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• v.14 no.1
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• pp.505-514
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• 2014

This study was researched by practical method in a subjectivity study accessible in-depth, in sloughing off old habit of functional quantity analysis about food preference of an expressway resting place customer. The perception pattern come out in this study were divided into four types in Q-methodology. The result is as follows ; it is that divided '1[(N=7) : Cleanliness-selection Type], 2[(N=13) : Economy Type], 3[(N=9) : Selling-area Goodwill Type], 4[(N=10) : Self-satisfaction Type]'. Like this, it found that is very different type all over. Hereafter, this study is to ascertain acceptance behavior about reception type on food-preference of an expressway-resting-place-customer ; to offer a developmental suggestion about it.

• Applied Biological Chemistry
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• v.37 no.6
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• pp.427-432
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• 1994

The effectiveness of the resting cells of a photosynthetic bacterium, Rhodocyclus gelatinosus KUP-74, was investigated on the production of extracellular ${\delta}-aminolevulinate$ (ALA). The ALA generating system with 1.05 mg cells per milliliter required 6 hr-incubation to obtain maximal yield of extracellular ALA. Under this condition ALA inducers, i.e., levulinate or L-glutamate showed relatively low effects to increase extracellular ALA production. Instead, the volume of the system and proper cell density appeared to be important factors for effective production of the ALA. The life-span of the resting cells was remarkably extended to maintain stable production of the ALA by immobilization of cells.

• Applied Biological Chemistry
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• v.36 no.6
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• pp.481-487
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• 1993

The production of sorbose from sorbitol in resting cell system of Acetobacter suboxydans was studied. The conversion of sorbose from sorbitol was markedly influenced by several factors such as the substrate concentration, reaction time, temperature, pH, metal ions, growth factors and aeration in the resting cells. Sorbose production rapidly increased in the range of 6 mg/ml cells with the concentration of 5% sorbitol. For production of sorbose from sorbitol, optimal temperature and pH were $30^{\circ}C$ and 6.0. The production of sorbose from sorbitol was activated by 1 mM of $Al^{+3}$ while inhibited by $Ni^{+2}$. The conversion of sorbitol to sorbose was stimulated by the adding of 1 mM p-aminobenzoic acid and nicotinic acid, respectively. During incubation of 1.5 ml of reaction mixture in 50 ml of Erlenmeyer flask, 5% sorbitol was completly converted to sorbose after 20 hours.

• Korean Journal of Clinical Laboratory Science
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• v.47 no.1
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• pp.46-50
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• 2015

The previous studies showed that the visual imagery activated the occipital and posterior inferior temporal area of the brain, and the damage to the occipital cortex impaired the visual mental imagery. We studied current-source distribution of electroencephalography (EEG) to observe neuronal activity during imagery tennis playing. Eleven healthy volunteers were enrolled. All volunteers were right-handed males and novices for tennis playing. The mean age of them was 24.9 years. The EEGs were recorded on the scalp electrodes located according to the International 10~20 System. The number of electrodes was 25 channels including subtemporal electrodes. The EEG recording session was 13 min including 5 segments: resting-I, scenery-slide show, resting-II, watching tennis-game video, and imagery-tennis playing. The recoding durations were 3, 2, 3, 2, and 3 min respectively. Five 'artifact free 3-sec segments' were selected in each segment of 'imagery-tennis playing' and 'resting-II'. We did the frequency domain analysis with the EEG segments using a distributed model of current-source analysis. The statistical-nonparametric maps (SnPMs) were obtained between the segments of 'imagery-tennis playing' and the segments of 'resting-II' (p<0.01). The significant change of current-source density was observed only in alpha-2 frequency band (10~12 Hz). The current-sourcedensity was increased in the hippocampus, parahippocampus, and occipital fusiform gyrus in the right cerebral hemisphere (p<0.01). Imaginary-tennis playing may activate the hippocampal-occipital alpha networks of nondominant hemisphere.