• Herbal Formula Science
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• v.20 no.1
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• pp.51-65
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• 2012

Objectives : In this study the antidepressant effects of mixture of Lycii Radicis Cortex and Gardeniae Fructus on the change of HPA-Axis and Catecholamine system was investigated Methods : The forced swimming test was performed. The expression of CRF, c-Fos in the PVN, and TH in the VTA and LC were measured with immunohistochemical method. And the experimental groups were divided into the Extraction after Mix group(A) and Mix after Extraction group(B). The effects of both group were compared. Results : The duration of immobility in the FST was decreased significantly in three groups except B100(P<0.01). B100 was shown the significant increase(P<0.05). The expression of CRF in PVN was decreased significantly in all group(P<0.05~P<0.01). The expression of c-Fos in PVN was decreased in A100, A400 and was increased significantly in B100, B400(P<0.05). The expression of TH in VTA and LC were decreased significantly in all group(P<0.001). Conclusions : Effects of Extraction after Mix group(A) and Mix after Extraction group(B) on the HPA-Axis system and Catecholamine system were validated.

• Journal of Chest Surgery
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• v.44 no.5
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• pp.380-382
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• 2011

Lymphangioma is a congenital malformation of the lymphatic system and is thought to result from the failure of the lymphatic system to connect with the venous system. Lymphangioma of the chest wall is a very rare disease entity, and only a few cases have ever been documented in the literature. To the best of our knowledge, there have been few cases of recurrent cavernous lymphangioma after surgical excision of a cystic hygroma on the same side of the chest wall. Here, we report a case of a cavernous lymphangioma of the chest wall in a patient who had undergone surgical excision of a cystic hygroma 19 years earlier.

• The Journal of Internal Korean Medicine
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• v.37 no.3
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• pp.484-494
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• 2016

Objective: This study was designed to analyze the treatment effects of Chungsangboha-tang through retrospective chart reviews.Methods: Fifty-one outpatients who had visited the Allergy, Immune & Respiratory System Division at the Kyung Hee Korean Medicine Hospital and who had taken Chungsangboha-tang from February 1, 2006, to February 1, 2016, had their basic medical records and examinationsretrospectively reviewed with respect to IgE, eosinophil, AST, and ALT. The PFT results of 11 patients were also investigated with respect to FEV1, FVC, and FEV1/FVC.Results: The percentage of males and females was 49.02% and 50.98%, respectively. The past histories of patients included asthma (66.67%), unspecified cough (21.57%), COPD (9.80%), allergic rhinitis (7.84%), and others. The subjective symptoms included cough (82.35%), sputum (39.22%), dyspnea (37.25%), and others. The most numerous pattern identification was wheezing dyspnea. IgE was significantly reduced, and eosinophil had a reduced tendency after 116.76±160.40 days of taking Chungsangboha-tang. PFT results also significantly increased after 213.09±266.62 days, while AST and ALT results showed a reduced tendency. In the asthmatic group, IgE also showed a reduced tendency. In particular, IgE was significantly reduced in patient groups taking medicine for more than 12 weeks.Conclusions: The conditions of patients with chronic pulmonary disease such as asthma and COPD significantly improved with Chungsangboha-tang after more than 12 weeks.

• Proceedings of the KIEE Conference
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• 2006.07a
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• pp.12-13
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• 2006

In this paper, RCF(Resistive Companion Form) analysis method which is used to analyze small signal stability problems of non-continuous systems including switching device. The RCF analysis method are applied to the power systems with the thyristor controled FACTS equipments such as TCSC. As a result of simulation, the RCF method is very powerful to calculate the oscillation modes exactly after the switching operations, and useful to analyze the small signal stability of power systems with switching devices such as FACTS equipments. As an applicable example of the RCF method in power system, the one machine infinite bus system including TCSC at generator terminal bus is investigated and the results proved that variations of oscillation modes after periodic switching operations of TCSC can be calculated exactly.

• 한국정보디스플레이학회:학술대회논문집
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• 2008.10a
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• pp.911-913
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• 2008

In this work, nonvolatile memory (NVM) devices for system on panel of flat panel display (FPD) were fabricated using low temperature polycrystalline silicon (LTPS) thin film transistor (TFT) technology with an oxide-nitride-oxynitride (ONOn) stack structure on glass. The results demonstrate that the NVM devices fabricated using the ONOn stack structure on glass have suitable switching characteristics for data storage with a low operating voltage, a threshold voltage window of more than 1.8 V between the programming and erasing (P/E) states after 10 years and its initial threshold voltage window (${\Delta}V_{TH}$) after $10^5$ P/E cycles.

• The Korean Journal of Physiology
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• v.19 no.2
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• pp.173-187
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• 1985

Renal compensatory adaptation caused by ablation of a part of renal mass has long been known in the field of the compensatory renal hypertrophy or hyperplasia. Many reports were found on the chronic mechanisms on the compensatory renal hyperfunction after exclusion of the contralateral kidney. However the mechanism(s) of the acute compensatory hyperfunction after contralateral exclusion has not yet been clarified. In the present experiment, we have tried to prove the possibility of the involvement of the renin-angiotensin system and/or prostaglandin system in the control mechanism of the acute compensatory renal hyperfunction after contralateral kidney exclusion. There were found different responses of the renal hyperfunction by contralateral renal pedicle or ureteral occlusion. Contralateral renal pedicle or ureteral occlusion caused a sustained increases of the urinary volume, sodium and potassium excretion, while the magnitude of the changes was different quantitatively by the maneuvers. Blood collection affected on the acute compensatory renal responses after ureteral as well as renal pedicle occlusion. Plasma prostaglandin $E_2$ level was not changed by the contralateral renal pedicle or ureteral occlusion. Urinary excretion of Prostaglandin $E_2$, the indices of renal prostaglandin biosynthesis, was not changed by the contralateral renal pedicle occlusion, but increased without significance by the contralateral ureteral occlusion. Acute renal compensatory responses after contralateral renal pedicle occlusion were blocked by the pretreatment of indomethacin. Plasma renin activity increased after contralateral ureteral occlusion, but the pattern of the increases was the same as in the time-control group. Plasma renin activity after contralateral renal pedicle occlusion did not change by the time sequence. SQ 20,881, an angiotensin I converting enzyme inhibitor, blunted the contralateral renal responses after the renal pedicle occlusion. Bilateral renal denervation abolished the contralateral renal responses after the renal pedicle occlusion. The above data suggest that there is no direct evidence to support the involvement of the renin-angiotensin system and/or prostaglandin system for the acute compensatory renal hyperfunction after contralateral kidney exclusion, and that the functional changes of the intact kidney may be caused by a humoral substances, or other mechanisms by afferent renal nerve activity originating from the treated kidney.

• Journal of The Korean Association For Science Education
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• v.24 no.5
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• pp.886-901
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• 2004

The purpose of this study was to document the changes in astronomical concepts for preservice and inservice elementary school teachers after being presented with the newly devised Earth Motions Centric Solar System Model. The subjects of the study were 31 preservice and 30 inservice elementary schools teachers in the Jeonbuk Province. First, the author investigated the naive theories of the subjects, and then, compared that data to the data obtained after their exposure to the model. The total number of items on the instrument for this study was 10. These items included questions about the motion of interior planets, the phases and sizes of interior planets, and the motion of exterior planets and comets. After analyzing the answers to the items before the experiment, the author was able to confirm the existence of the naive theories regarding astronomical phenomena. Also, after the experiment, the author was able to observe the conceptual change in thought of the preservice and inservice elementary school teachers. Results showed that learning through the new model had positive effects on the preservice and inservice elementary school teachers' conceptualization of the interior planets' motion, phases and sizes, and the exterior planets' motion.

• Journal of Electrical Engineering and Technology
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• v.13 no.1
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• pp.60-67
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• 2018

The presence of induction motor loads in a power system may cause the phenomenon of delayed voltage recovery after the occurrence of a severe fault. A high proportion of induction motor loads in the power system can be a significant influence on the voltage stability of the system. This problem referred to as FIDVR(Fault Induced Delayed Voltage Recovery) is commonly caused by stall of small HVAC unit(Heating, Ventilation, and Air Conditioner) after transmission or distribution system failure. This delayed voltage recovery arises from the dynamic characteristics associated with the kinetic energy of the induction motor load. This paper proposes the UVLS (Under Voltage Load Shedding) control strategy for dealing with FIDVR. UVLS based schemes prevent voltage instability by shedding the load and can help avoid major economic losses due to wide-ranging cascading outages. This paper review recent topic about under voltage load shedding and compare decentralized load shedding scheme with conventional load shedding scheme. The load shedding strategy is applied to an actual system in order to verify the proposed FIDVR mitigation solution. Simulations demonstrate the effectiveness of the proposed method in resolving the problem of delayed voltage recovery in the Korean Power System.

• Industry Promotion Research
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• v.9 no.1
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• pp.103-111
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• 2024

In this study, the problem of child care gaps has arisen due to the expansion of women's entry into the workforce and the increase in working couples, and the care cliff phenomenon after children enter elementary school has been identified as one of the causes of women's career disconnection and low birth rates, and child care services have been initiated to solve care problems and balance work and family. The importance of childcare services to the safety and well-being of children has been highlighted by the restrictions on school attendance and the absence of caregivers during the COVID-19 pandemic. The government has been making policy efforts to reduce the gap in child care, but problems with the effectiveness and efficiency of the child care system have arisen due to unstable target selection and delivery systems by ministries and projects in the implementation of child care services. Therefore, this study examines the child care services implemented by each ministry to reduce the blind spots of after-school care services in the community and prepare efficient operation plans for various delivery systems, and seeks directions for the development of child care services.

• Annals of Clinical Neurophysiology
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• v.19 no.1
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• pp.64-67
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• 2017

Guillain-Barre syndrome (GBS) is an auto-immune disease of peripheral nerve system. It occurs mainly after preceding infection such as upper respiratory or gastrointestinal infection and other antecedent events as tetanus vaccinations. However, any case of GBS after tetanus infection has not been reported. Recently, when analyzed the clinical aspects of 13 tetanus patients including ours, 2 GBS occurred after tetanus infection. We report the neurological and electrophysiologic findings of two cases of Guillain-Barre Syndrome after generalized tetanus.