• Investigative Magnetic Resonance Imaging
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• v.11 no.2
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• pp.87-94
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• 2007

Purpose: The purpose of this study was to evaluate the usefulness of fast inversion recovery (FIR) and magnetization-prepared three dimensional gradient echo sequence (3D GRE) T1-weighted sequences for neonatal brain imaging compared with spin echo (SE) sequence in a 3T MR unit. Materials and Methods: T1-weighted axial SE, FIR and 3D GRE sequences were evaluated from 3T brain MR imaging in 20 neonates. The signal-to-noise ratio (SNR) of different tissues was measured and contrast-to-noise ratios (CNR) were determined and compared in each of the sequences. Visual analysis was carried out by grading gray-white matter differentiation, myelination, and artifacts. The Wilcoxon signed ranked test was used for evaluation of the statistical significance of CNR differences between the sequences. Results: Among the three sequences, the 3D GRE had the best SNRs. CNRs obtained with FIR and 3D GRE were statistically superior to those obtained with SE; these CNRs were better on the 3D GRE compared to the FIR. Gray to white matter differentiation and myelination were better delineated on the FIR and 3D GRE than the SE. However, motion artifacts were more commonly observed on the 3D GRE and flow-related artifacts of vessels were frequently seen on the FIR. Conclusion: FIR and 3D GRE are valuable alternative T1-weighted sequences to conventional SE imaging of the neonatal brain at 3T providing superior image quality.

• 축산식품과학과 산업
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• v.6 no.1
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• pp.34-45
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• 2017

• Food Science and Biotechnology
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• v.17 no.1
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• pp.66-71
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• 2008

A total of 284 milled rice (MR) marketed in Korea were analyzed for grading characteristics (head rice, broken kernels, chalky kernels, and damaged kernels%), color characteristics (L-, a-, b-values, and whiteness), protein content (%), and the cooked rice (CR) sensory quality to investigate the key characteristics affecting the overall sensory quality of rice marketed in Korea. Relatively high correlation with the overall sensory quality of the CR was found in color characteristics such b-value of the CR (r=-0.779) and MR (r=-0.545), the a-value of the CR (r=0.513), and the whiteness (r=0.298) of the MR, compared to protein (r=-0.150), and the moisture (r=0.158) contents of the MR and the percentage of head rice (r=0.195). Partial least squares (PLS) regression of the CR b-value with various characteristics of the MR showed that CR b-value was increased with MR b-value effectively, followed by protein content, damaged kernels, chalky kernels, and colored kernels of MR while it was decreased with whiteness and moisture content for the MR.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2004.05a
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• pp.51-55
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• 2004

Generally, aggregate may limit the strength of concrete, and aggregate with undesirable properties including strength, shape and grading etc. cannot produce good concrete. Also, the properties of aggregate greatly affect the durability and structural performance of concrete. Recently, it has increased the using of crushed aggregate for concrete due to the exhaustion of good natural aggregate. In case of Korea, the using ratio of crushed stone occupies about 97％ of whole coarse aggregate, and ratio of crushed sand occupies about 18.3％ of whole fine aggregate. This is an experimental study to compare and analyze the properties of crushed sand for concrete in capital region and concrete according to the replacement ratio of crushed sand to do suitable mix design and improve the concrete quality. According to results, it was found that nearly all the properties of crushed sand satisfied with the value recommended by KS.

• Journal of Oriental Neuropsychiatry
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• v.18 no.3
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• pp.289-298
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• 2007

Delirium is a acute syndrome of disorientation caused by disfunction of brain tissue and has a variety of symptomes. It is characterized by disturbance of consciousness and attention, cognition, and perception for a brief period of time and tends to fluctuate during the course of the day. We experienced a 56 year-old woman who had a hypertension as well as Delirium caused by cranial contusion and whose condition was improved by Oriental medical treatment. this case study illustrates what the manifestation of Delirium caused by cranial contusion. This study shows more objective mecical pregress by grading Korean version of Delirium Rating Scale(K-DRS) and Korean version of Mini-Mental State Examination(K-MMSE). After our treatments, Delirium and some other symptoms were improved.

• Korean Journal of Biological Psychiatry
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• v.14 no.1
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• pp.14-20
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• 2007

Objectives : The diagnosis of depression is based on a highly variable set of symptoms. Therefore, depression should not be viewed as a single disease, but a heterogenous syndrome comprised of different pathophysiologies. There are several subtypes of depression which were already incorporated in DSM-IV. This article provides a systematic review of pharmacological treatments of two recognized subtypes of depression-dysthymic disorder and atypical depression. Methods : Systematic search of relevant literatures on dysthymic disorder and atypical depression was performed by proposed search strategy of the Clinical Research Center for Depression of Korean Health 21 R&D Project. All identified literatures were carefully reviewed and classified according to SIGN grading system and summarized in a narrative manner. Results : For the treatment of dysthymic disorder and atypical depression, selective serotonin reuptake inhibitors( SSRIs) and moclobemide have more evidence than the other antidepressants. SSRIs and moclobemide showed superior tolerability than tricyclic antidepressants. Conclusions : The authors proposed treatment recommendations for dysthymic disorder and atypical depression by the methods of evidence-based medicine(EBM). However, guideline developing methods of EBM also have several inevitable limitations. Therefore, in the absence of clear and significant differences in efficacy, the choice of medication must be individualized for a particular patient based on psychiatrist's own clinical decision.

• Journal of Acupuncture Research
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• v.18 no.5
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• pp.99-108
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• 2001

Objective : Lately variable oriental-western medicine treatment have been used for Bell's palsy. The purpose of this study is comparison of clinical treatment outcome between oriental medicine group and oriental-western medicine group. Materials and Methods : From 08-01-2000 to 07-30-2001, 30 Bell's palsy out-patients who visited within 5days after onset and treated more than 3weeks at the Department of Acupuncture & Moxibustion, Bundang CHA Oriental Medicine Hospital were selected for two groups. One group(A group) was treated by oriental medicine therapy(Acupunture, Herb, Physical therapy), the other group(B group) was treated by oriental-western medicine therapy(Acupunture, Herb, Physical therapy, Administration of prednison). Two group was composed of 15 patients respectively and measured by HBGS(House-Brackmann Grading System) and DEFS(Detailed Evaluation of Facial Symmetry of Pillsbury and Fisch) at first visit and 3weeks after. Result and Conclusion : A group was marked more higher than B group in treatment outcome. But we discovered that it is not significant differences between two groups.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.14 no.2
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• pp.198-206
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• 2001

Recurrent Bell's palsy is a very rare case and have been reported that shows the incidence to be approximately 10 per cent in the Bell's palsy patents. It is generally accepted that facial paralysis caused by compression of the facial nerve by tumor develops slowly and has an unremitting course, however, reported cases have described the rare association of recurrent facial paralysis and intracranial tumor, and the same recovery rate. Usual symptoms of Bell's palsy include subacute facial palsy, hyperacusis on the affected side, postauricular pain on the affected side, altered sensation of taste, and partial trigeminal distribution hypesthesias. Complete resolution of symptoms is usually seen in 2-3months in $75-85\%$ of cases, with $25-35\%$ showing varying degrees of residual effects. We report a case of 4th ipsilateral recurrent Bell's palsy in a 14-year-old women, which was occurred in every winters. We treated her with acupuncture, moxibustion, herbal medication, carbon and silver spike point, and used House-Brackmnn grading system(HBGS) and the Fisch Detailed Evaluation of Facial Symmetry(DEFS) to assess the degree of paralysis in each part of face.

• Journal of the East Asian Society of Dietary Life
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• v.20 no.2
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• pp.248-253
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• 2010

The effect of maturity and marbling score on meat quality properties in fattening Hanwoo loin was investigated. No differences attributable to maturity and marbling score were noted in pH, $L^*$ value (lightness), $a^*$ value (redness), $b^*$ value (yellowness), cooking loss. Myofibrils extractability, hardness, springiness, cohesiveness, gumminess and chewiness. In the case of water holding capacity, a maturity score of 6 and 7, and marbling score of 8 and 9 were the highest among the groups (p<0.05). The shear force become higher when maturity score increased and marbling score decreased (p<0.05).

• Current Optics and Photonics
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• v.3 no.6
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• pp.583-589
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• 2019

We report experimental results on 940-nm 350-mW AlGaAs/InGaAs transverse single-mode laser diodes (LDs) adopting graded-index separate confinement heterostructures (GRIN-SCH) and p,n-clad asymmetric structures, with improved temperature and small-divergence beam characteristics under high-output-power operation, for a three-dimensional (3D) motion-recognition sensor. The GRIN-SCH design provides good carrier confinement and prevents current leakage by adding a grading layer between cladding and waveguide layers. The asymmetric design, which differs in refractive-index distribution of p-n cladding layers, reduces the divergence angle at high-power operation and widens the transverse mode distribution to decrease the power density around emission facets. At an optical power of 350 mW under continuous-wave (CW) operation, Gaussian narrow far-field patterns (FFP) are measured with the full width at half maximum vertical divergence angle to be 18 degrees. A threshold current (I_th) of 65 mA, slope efficiency (SE) of 0.98 mW/mA, and operating current (I_op) of 400 mA are obtained at room temperature. Also, we could achieve catastrophic optical damage (COD) of 850 mW and long-term reliability of 60℃ with a TO-56 package.