• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.15 no.2
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• pp.57-63
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• 2001

This paper analysed the characteristic of Power consumption at many type of Inverter controlled Elevator. Especially, this paper proposed the standard value of full load currents. For this propose, it was classified by the passenger capacity and manufacture company. As a result, it is found that (i) the value is between -3[A] and 7[A] in case of elevator. That means the full load currents was smaller than the standard value of conventional operation type (ii) the value is between 0.5[kVA] and 3[kVA] in case of Power transformer. That means the transformer capacity was smaller than the standard value of conventional operation type. it was classified by the passenger capacity at inverter controlled elevator in apartment Also, to guarantee the operation stop of inverter controlled elevator, this paper proposed the redundancy method of electrical installations. the redundancy method is (i) 2 line service system and (ii) 2 distribution line system.

• Journal of the Korean GEO-environmental Society
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• v.10 no.5
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• pp.11-18
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• 2009

When underground pipe is installed, backfill materials need proper compaction. But in case of circular underground pipe, compaction of backfill material is difficult and compaction efficiency is poor at beloe the pipe. It caused the stability of underground pipe is reduced and various damages occurred. One of the solutions to solve this problem for underground pipe is to use controlled low strength material (CLSM). CLSM is made by concept of low strength concrete, which is applied to geotechnical engineering field. The representative characteristics of CLSM are self-leveling, self-compacting and flowability. In addition, its strength can be controlled and its construction method is simple. The behavior of underground pipe was investigated by finite element analysis for various backfill materials under same condition. As a result, in case of using the CLSM as backfill material, surface settlement and displacement of pipe are reduced comparing with those in case of using field soil or sand.

• Journal of Oriental Neuropsychiatry
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• v.23 no.4
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• pp.37-48
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• 2012

Objectives : The purpose of this study is to investigate the frequently used herbal materials among herbal prescription for vascular dementia. Methods : Every article relevant to vascular dementia was initially obtained from a Korean database and PubMed. Keywords searched were 'vascular dementia', 'herbal medicine' and 'human'. Results : Clinical study, which vascular dementia were treated with herbal medicine, were 12. Among these 12 articles, 6 were case study, 1 was Controlled Clinical Trial and 5 were Ramdomized Controlled Trial (RCT). High frequently used herbal materials were Ginseng Radix (9 times), Cnidii Rhizoma (8 times), Glycyrrhizae Radix, Citri Pericarpium, Astragali Radix and Angelicae Gigantis Radix (6 times). Conclusions : We could know frequent-used herbal medicine for vascular dementia. To be aware of the frequently used herbal medicine for vascular dementia can be helpful in adding herbal materials to prescription in a clinical treatment and development of new drugs.

• Journal of Korean Port Research
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• v.12 no.1
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• pp.95-104
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• 1998

Water pollution in a semi-enclosed sea area such as a bay due to stagnancy of water has been a serious water environmental problem. Recently, some kinds of new methods to activate the tidal exchange between an inner bay and an outer sea area by control of a tidal residual current have been proposed. However, these methods have several problems, that is, I). deterioration in a natural view due to building of huge structures, II). increase of risk of navigation in case of a submerged structure, III). limition of sea area where a tidal current can be controlled and IV). difficulty in removing those structures in case of occurrence of an unexpected impact on water environment. In this paper, a new method is proposed, which can solve all the above problems, to purify water quality in a semi-enclosed bay by creation and control of a pattern of a tidal residual current. The tidal residual current is controlled by unsymmetric structures, which change the properties of resistance according to the direction of flow, arranged on the sea bottom. In this study, several numerical and hydraulic experiments of tidal current and particle-tracking for various arrangements of bottom roughness in a semi-enclosed model bay were carried out. As a result of experiments, it becomes clear that it is possible to generate a new tidal residual current and to activate a tidal exchange by only operation of bottom roughness arrangement.

• Biomedical Science Letters
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• v.24 no.2
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• pp.94-101
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• 2018

Tuberculosis (TB) is infectious disease caused by Mycobacterium tuberculosis (MTB) infection. It is known that not only the property of microorganism but also the genetic susceptibility of infected patients is controlled. Interleukin 2 (IL-2) is a cytokine belonging to type 1 T helper (Th1) activity. In addition, IL-2, when infected with MTB, binds IL-2 receptor and promotes T cell replication and is involved in granuloma formation. The aim of this study was to investigate the genetic polymorphisms of the IL-2 receptor gene in tuberculosis patients and normal individuals. We analyzed 22 SNPs in three genes using the genotype data of 443 tuberculosis cases and 3,228 healthy controls from the Korea Association Resource for their correlation with tuberculosis case. IL2RA, IL2RB, and IL2RG genes were genotyped of 16, 4, and 2 SNPs, respectively. Among three genes, only IL2RA gene polymorphisms showed statistically significant association with tuberculosis case. 6 SNPs with high significance were identified in the IL2RA gene. In addition, the linkage disequilibrium (LD) structure of IL2RA gene was confirmed. SNP imputation of IL2RA gene was performed, it was confirmed that more SNPs were significant between case and control. If we look at the results of IL2RA gene analysis above, we can see that genetic polymorphism in the gene expressing $IL-2R{\alpha}$ will regulate the expression level of $IL-2R{\alpha}$, and the change in the immune system involved in $IL-2R{\alpha}$. In this study, genetic polymorphism that may affect host immunity suggests that susceptibility to tuberculosis may be controlled.

• The Journal of Korean Medicine
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• v.43 no.2
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• pp.92-109
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• 2022

Objectives: The objective of this study was to appraise the effect of electroacupuncture (EA) for the treatment of acute gout. Methods: Since no suitable study could be found in the domestic database, we performed a literature search up to the end of December 2020 using four international electronic databases. Randomized controlled trials (RCTs) evaluating the effectiveness of EA in the treatment of acute gout were included. The risk of bias was evaluated from the Cochrane risk of bias tool. Results: Eight appropriate RCTs were included and analyzed. Three evaluation tools were mainly used: Total Effective Rate (TER), Uric acid (UA), and Pain score (VAS). In the case of TER, in all eight cases, electroacupuncture alone and combined treatment showed a statistically significant level of improvement compared to Western medicine treatment. In the case of VAS score, electroacupuncture alone and combined treatment showed a more significant effect than Western medicine treatment. In the case of UA level, electroacupuncture combined treatment showed a more significant effect than western medicine treatment. Although not all three evaluation tools were used in all studies, the majority of studies showed that electroacupuncture was effective for acute gout patients. Conclusions: The results of this study suggest that EA treatment may be effective for acute gout. It should be noted, however, that the studies included in this study were geographically biased, small in number, and mostly at high risk of bias. More well-designed studies are needed in the future.

• Journal of Korean Medicine Rehabilitation
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• v.29 no.3
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• pp.61-74
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• 2019

Objectives This study aimed to review clinical studies about Korean medicine used in peroneal nerve palsy. Methods In 11 online databases (Earticle, Research Information Sharing Service, Oriental Medicine Advanced Searching Integrated System, KMbase, Korean Traditional Knowledge Portal, National Digital Science Library, MEDLINE/Pubmed, Ebscohost, Cochrane CENTRAL, EMBASE, China National Knowledge Infrastructure), we searched clinical studies about Korean medicine. Among the studies that we've searched, we excluded the studies that are not related to Korean medicine, case reports, randomized controlled trials and retrospective studies. As a result, 16 case studies and 1 randomized controlled trial are included. Results Total number of patients was 123. In these studies, acupuncture (100%), herbal medicine (58.8%), pharmacopuncture (58.8%), Korean physical therapy (58.8%), moxibustion (41.1%), cupping (41.1%) etc. were used. In acupuncture, GB34 and ST36 were most frequently used. Most of the herbal medicines used in these studies were different. Range of movement were most frequently used in outcome measure. Conclusions In this study, we reviewed studies about Korean medicine used in peroneal nerve palsy. It was difficult to clearly determine which intervention has improved the symptom. In the future, Further clinical studies will be needed to retain the evidence for the treatment of peroneal nerve palsy. And also more randomized controlled clinical trials to prove the efficacy of Korean medicine will be needed.

• The Journal of Pediatrics of Korean Medicine
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• v.26 no.1
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• pp.46-59
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• 2012

Objectives The purpose of this study is to investigate recent clinical studies on effect of acupuncture for rhinitis in other countries. We have analyzed the studies on effect of acupuncture for rhinitis within randomized controlled trial(RCT), reviewed for 11 years (from 2001 to 2011). Methods The search database includes PubMed. To narrow the search, the following key search terms were used: 'rhinitis, acupuncture'. The search was limited to the publication date from 2001 to 2011. Results Total 20 studies were selected: RCT(13), review(5), case report(1), and cost effectiveness study(1). In RCT, 9 studies used acupuncture only, and 8 studies of them have revealed that acupuncture is effective on rhinitis. In review, 3 studies are systematic review, 2 studies are no systematic review. Among systematic review, 2 studies have revealed partial effectiveness of acupuncture for rhinitis, but they suggested the necessity of further studies. Conclusions Domestic studies on effect of acupuncture for rhinitis are necessary. For more accurate results, controlled, large scale and well designed studies are recommended.

• Journal of Dental Anesthesia and Pain Medicine
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• v.18 no.3
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• pp.169-175
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• 2018

Background: The objective of this study was to compare hemodynamic and recovery characteristics of total intravenous anesthesia using propofol target-controlled infusion (TCI) versus sevoflurane for extraction of four third molar teeth. Methods: One hundred patients undergoing extraction of four third molar teeth under general anesthesia were randomized to one of two groups. Group 1 received propofol TCI-oxygen for induction and propofol TCI-oxygen-air for maintenance. Group II received a propofol bolus of 2 mg/kg for induction and sevoflurane-oxygen-air for maintenance. Heart rate, mean arterial pressure (MAP), operating time, time to emergence, nausea and vomiting, and sedation and pain scores were measured in each group. Results: Demographic data, including age, gender, weight, and height, were not significantly different between the two groups. The MAP was significantly higher after intubation (P = 0.007) and injection of anesthesia (P = 0.004) in the propofol group than in the sevoflurane group, with significant reflex bradycardia (P = 0.028). The mean time to emergence from anesthesia using propofol was 25 s shorter than that of sevoflurane (P = 0.02). Postoperatively, the propofol group was less sedated than the sevoflurane group at 30 min (0.02 versus 0.12), but this difference was not significant (P = 0.065). Conclusion: Both propofol TCI and sevoflurane are good alternatives for induction and maintenance of anesthesia for short day-case surgery. However, propofol TCI does not blunt the hemodynamic response to sudden, severe stimuli as strongly as sevoflurane, and this limitation may be a cause for concern in patients with cardiac comorbidities.

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.15 no.8 s.101
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• pp.891-896
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• 2005

On the basis of theoretical studies on the effect of the cylinders attached to semi-infinite screens, the tangential sound power-transport parallel to the surface of the attached cylinder is minimized by means of a secondary sound field, which is generated from a part of the attached cylinder. The numerical study shows the possibility of deflecting the incident sound by minimizing the sound field of the upper sections. The acoustical shadow region was more pronounced in both near- and far-field compared to the passive case with rigid surface, i.e. without active control. For a relatively wide frequency range it was possible to enhance shielding effects only with few secondary sources and error microphones. In this paper effects of control parameters on the actively controlled sound field near the top edge of noise barriers are studied. Results of numerical study and model measurements are shown and discussed.