• Journal of The Korean Ophthalmological Society
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• v.59 no.11
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• pp.1091-1096
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• 2018

Purpose: We report a case of bilateral nonarteritic anterior ischemic optic neuropathy (NAION) following acute angle-closure crisis (AACC). Case summary: A 76-year-old female visited our clinic because of a 1-day history of ocular pain and vision loss in both eyes. The visual acuity was 0.02 in both eyes and her intraocular pressure (IOP) was 52 mmHg in the right eye (RE) and 50 mmHg in the left eye (LE). She had corneal edema and a shallow anterior chamber in both eyes, with 4 mm fixed dilated pupils. After decreasing the IOP with intravenous mannitol, laser iridotomy was performed. However, 2 days later, visual acuity was further reduced to finger counting at 10 cm RE and at 50 cm LE, and her optic disc was swollen. Bilateral NAION following AACC was diagnosed. One month later, visual acuity slightly improved to 0.02 RE and 0.04 LE, and the optic disc edema resolved. A small cup-disc ratio, optic disc pallor, and atrophy were observed. Humphrey visual fields demonstrated superior and inferior altitudial visual field defects in the LE, and almost total scotoma in the RE. Conclusions: AACC can be a predisposing factor for NAION, so the relative afferent pupillary defect, papilledema, and presentation of other risk factors are important clues to a diagnosis of NAION.

• (The)Study of the Eastern Classic
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• no.33
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• pp.437-470
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• 2008

Woo-Suk Hwang Jong-Ha(友石, 黃宗河 1887-1952), Woo-Chung Hwang Sung-Ha (又淸, 黃成河, 1891-1965), Gook-In Hwang Kyung-Ha (菊人, 黃敬河, 1895-?) and Mi-San Hwang Yong-Ha(美山 黃庸河, 1899-?) were not only renowned writers and painters but also brothers spaced four years apart The Hwang brothers were not specially trained by educational institutions, but studied on their own, relying on picture books from China and the artpieces of masters. Even though brothers each born only four years from the next, they preferred different techniques, and the subjects they were proficient at drawing were all different to some extent: Tiger Painting by Hwang Jong-Ha, Finger Painting by Hwang Sung-Ha, Ginseng Painting by Hwang Kyung-Ha and Painting of Four Gracious Plants (plum, orchid, chrysanthemum, bamboo) by Hwang Yong-Ha are an example of this. They also showed differences in their manner of holding various exhibitions. They did, however, forge strong familial ties by holding the Exhibition by Four Brothers or by producing joint paintings. In particular, they established an art school called the Song-Do Society for the Research of Writings and Paintings in Gaesung, North Korea as a means to nurture young artists and to offer opportunities to introduce their own artwork. They were both friends and artists, as they spent their childhood together and share their thoughts and hobbies as well as their own individual and unique works of art. Moreover, they went the through ups and downs of Korean history from the end of the Joseon Dynasty through the Japanese occupation however, they strove to keep the tradition of Korean paintings alive, and even persevered in writing and drawing countless artwork with paper, brush and Chinese ink until the day they each died.

• Journal of The Korean Ophthalmological Society
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• v.59 no.11
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• pp.1097-1102
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• 2018

Purpose: To report a case of toxic optic neuropathy caused by chlorfenapyr ingestion accompanied by central nervous system involvement. Case summary: A 44-year-old female visited our clinic complaining of reduced visual acuity in both eyes for 7 days. She had ingested a mouthful of chlorfenapyr for a suicide attempt 2 weeks prior to the visit. Gastric lavage was performed immediately after ingestion at the other hospital. Her best-corrected visual acuity was finger count 30 cm in the right eye and hand motion in the left eye. Both pupils were dilated by 5.0 mm and the response to light was sluggish in both eyes. A relative afferent pupillary defect was detected in her left eye. Funduscopy revealed optic disc swelling in both eyes. Magnetic resonance imaging of the brain showed a symmetric hyper-intense signal in the white matter tract including the internal capsule, corpus callosum, middle cerebellar peduncle, and brainstem. The patient was diagnosed with toxic optic neuropathy induced by chlorfenapyr ingestion, and underwent high-dose intravenous corticosteroid pulse therapy. Three days later, the best-corrected visual acuity was no light perception in both eyes. Three months later, optic atrophy was observed in both eyes. Optical coherence tomography revealed a reduction in the thicknesses of the retinal nerve fiber layer and ganglion cell and inner plexiform layer in the macular area. Conclusions: Ingestion of even a small amount of chlorfenapyr can cause severe optic nerve damage through the latent period, despite prompt lavage and high-dose steroid treatment.

• Journal of the korean academy of Pediatric Dentistry
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• v.48 no.1
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• pp.31-41
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• 2021

The aim of this retrospective study was to evaluate the correlation between the midpalatal suture maturation and skeletal maturation in growing children aged 7 - 15 years and predict the maturational stages of the midpalatal suture corresponding to skeletal maturity assessed by the skeletal maturation indicators (SMI) and middle phalanx of the third finger (MP3) stages. The group of this retrospective study was consisted of randomly selected 132 male and 135 female in age from 7 - 15 years. The maturation of the midpalatal suture was evaluated by using images from cone-beam computed tomography (CBCT) while the skeletal age was assessed by hand-wrist radiography. CBCT images and hand-wrist radiographs used in this study were obtained from all subjects for orthodontic diagnosis before orthodontic treatment. The maturational stages of the midpalatal suture showed strong correlations with both SMI and MP3 stages. The correlation between the midpalatal suture maturation and SMI (Spearman's correlation coefficient, ϒ_S = 0.905, p < 0.05) was slightly greater than that of MP3 stages (ϒ_S = 0.830, p < 0.05). There was a positive significant correlation between the midpalatal suture maturation and chronological age (ϒ_S = 0.868,p < 0.05). CBCT for evaluation of the midpalatal suture maturational stages may be unnecessary in every pediatric patients because SMI and MP3 stages were both replaceable useful methods for assessing maturation of the midpalatal suture before orthopedic treatment. In this retrospective study, the diagnostic reliability of the SMI method for estimating midpalatal suture maturation showed better reliability than the MP3 method.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.32 no.3
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• pp.201-206
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• 2019

This report constitutes the first demonstration in Korea of single-crystal lateral gallium oxide ($Ga_2O_3$) as a metal-oxide-semiconductor field-effect-transistor (MOSFET), with a breakdown voltage in excess of 480 V. A Si-doped channel layer was grown on a Fe-doped semi-insulating ${\beta}-Ga_2O_3$ (010) substrate by molecular beam epitaxy. The single-crystal substrate was grown by the edge-defined film-fed growth method and wafered to a size of $10{\times}15mm^2$. Although we fabricated several types of power devices using the same process, we only report the characterization of a finger-type MOSFET with a gate length ($L_g$) of $2{\mu}m$ and a gate-drain spacing ($L_{gd}$) of $5{\mu}m$. The MOSFET showed a favorable drain current modulation according to the gate voltage swing. A complete drain current pinch-off feature was also obtained for $V_{gs}<-6V$, and the three-terminal off-state breakdown voltage was over 482 V in a $L_{gd}=5{\mu}m$ device measured in Fluorinert ambient at $V_{gs}=-10V$. A low drain leakage current of 4.7 nA at the off-state led to a high on/off drain current ratio of approximately $5.3{\times}10^5$. These device characteristics indicate the promising potential of $Ga_2O_3$-based electrical devices for next-generation high-power device applications, such as electrical autonomous vehicles, railroads, photovoltaics, renewable energy, and industry.

• Journal of the Korean Society of Radiology
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• v.13 no.2
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• pp.283-290
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• 2019

The purpose of this study is to suggest a quantitative supplementary index for patients with suspected Raynaud phenomenon. The subjects were 99 patients with suspected Raynaud phenomenon, 48 patients with low likelihood, 16 patients with middle range and 35 patients with high range. The test was instilled in ice water at $15.2{\pm}0.8^{\circ}C$ for 10 minutes of both hands and then venous injected of 99m-Tc 370 Mbq(10 mCi). After 5, 10 and 20 minutes, temperature changes of both fingers were measured. As a result, the temperature of the fingers was $32.6{\pm}4.9^{\circ}C$ in patients with a low diagnostic probability of Raynaud syndromes and $22.7{\pm}6.0^{\circ}C$ for those with a high diagnostic probability(p<0.05). In conclusion, we could confirm the difference of Raynaud phenomenon and finger temperature, and confirmed the possibility of secondary diagnosis as a quantitative index of Raynaud's diagnosis.

• Korean Journal of Heritage: History & Science
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• v.52 no.1
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• pp.170-189
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• 2019

Sochi Heo Ryun (小癡 許鍊, 1808-1893) was a literary artist of Chinese paintings of the Southern School during the late Joseon dynasty and the founder of paintings in the literary artist's style of Jindo County in South Jeolla Province. He was also a professional literary artist who acquired both learning and painting techniques under Choui (a Zen priest) and Kim Jeong-hee's teachings. Heo Ryun's landscape paintings were influenced by Kim Jung -hee. However, his ink orchid paintings, which he began producing in his later years, were not related to the 'Ink Orchid Paintings of Chusa (秋史蘭)'. His ink orchid paintings as a whole drew attention as he followed the old methods but still used rough brush strokes . Ordinary orchids were drawn based on Confucian content. However, his Jebal (題跋) and seal (印章) contain not only Confucian characters but also Taoist and Buddhist meanings. Therefore, it is possible to guess his direction of life and his private world of suffering. Ryun's ink orchid paintings reflected a variety of philosophies and aesthetic sensibilities. He went through a process of stylistic change over time and formed an 'Ink Orchid Painted Thought' in later life. The main characteristic of Sochi's ink orchid paintings is that he formed his own special methods for orchid paintings by mimicking the Manuals of Paintings. He drew orchids with his fingers in the beginning. Then, Jeongseop, Lee Ha-eung, Cho Hee-ryong, and others developed an organic relationship with the painting style of ink orchid paintings. Then in later years, orchid paintings reached the point of 'Picture Painted Thought (寫意畵)'. The above consideration shows that ink orchid paintings, which he produced until the end of his life, were the beginning of his mental vision and will to realize the image of a literal artist.

• Korean Journal of Heritage: History & Science
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• v.38
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• pp.157-178
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• 2005

In this thesis, ammaksae, or internal roof tiles, which was reported to be in the period of Baekje, was examined on the basis of layers of archaeological excavation and styles of relics. As a result, among the relics which have already been reported, jidumun amkiwa (concave roof tiles patterned by finger tips) excavated from Pungnap Earthen Wall and yudansik amkiwa (stepped concave roof tiles) from remains such as Guari Baekje Remains, could not be seen yet. The only relics that could be identified as original-style ammaksae or ammaksae were jidumun amkiwa unearthed from the site of Gunsurisa Temple, togiguyeon amkiwa (mouth-rim earthenware concave roof tiles) and yuaksik amkiwa (concave roof tiles with sills) from Buso Fortress and Gwanbukri Baekje Remains, and gwimyeonindongdangchomun ammaksae (honeysuckle-pattern concave end roof tiles with monster design) from the sites of Jeseok Temple and Mireuk Temple. Regarding ammaksae in the period of Baekje like the above, it is considered that jidumun amkiwa (short sills appeared), which showed up in the period of China's North Dynasties, developed into togiguyeon amkiwa and yuaksik amkiwa (sills were formed), and then gwimyeonindongdangchomun ammaksae (patterns appeared) emerged.

• Asian-Australasian Journal of Animal Sciences
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• v.32 no.4
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• pp.494-500
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• 2019

Objective: Feed consumption contributes a large percentage for total production costs in the poultry industry. Detecting genes associated with feeding traits will be of benefit to improve our understanding of the molecular determinants for feed efficiency. The objective of this study was to identify candidate genes associated with feed conversion ratio (FCR) via genomewide association study (GWAS) using sequence data imputed from single nucleotide polymorphism (SNP) panel in a Chinese indigenous chicken population. Methods: A total of 435 Chinese indigenous chickens were phenotyped for FCR and were genotyped using a 600K SNP genotyping array. Twenty-four birds were selected for sequencing, and the 600K SNP panel data were imputed to whole sequence data with the 24 birds as the reference. The GWAS were performed with GEMMA software. Results: After quality control, 8,626,020 SNPs were used for sequence based GWAS, in which ten significant genomic regions were detected to be associated with FCR. Ten candidate genes, ubiquitin specific peptidase 44, leukotriene A4 hydrolase, ETS transcription factor, R-spondin 2, inhibitor of apoptosis protein 3, sosondowah ankyrin repeat domain family member D, calmodulin regulated spectrin associated protein family member 2, zinc finger and BTB domain containing 41, potassium sodium-activated channel subfamily T member 2, and member of RAS oncogene family were annotated. Several of them were within or near the reported FCR quantitative trait loci, and others were newly reported. Conclusion: Results from this study provide valuable prior information on chicken genomic breeding programs, and potentially improve our understanding of the molecular mechanism for feeding traits.

• The Journal of the Convergence on Culture Technology
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• v.5 no.2
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• pp.271-278
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• 2019

Sochi Heo Ryeon (1808 ~ 1893), who was born in Jindo in the late Joseon Dynasty, is a master of three classes, caligography, painting.It is a representative painter who is called the founder of the Honam Paintings. He learned Confucianism, Buddhism, Taoism from choui and learned the basics of painting.He became a student of Kim Chung Hee as an introduction of choui. Since then, I have correctly understood the painting aesthetic that realizes the painting by the paintings and paintings of chusa. And he succeeded it in the art world of Honam. His life and artistic features are the wandering that lasted over 70, many work activities, and details the records habit of details of "Sochisillok". Sochi's paintings aimed at Namjong painting, expressing the simple and clear beauty of the free brush and the landscape painting of ye-hwang style. In addition, the peony was painted with bizarre rocks, expressing the lively beauty by changing the brush to be called 'Heo-peony'. And it fulfilled the desire for riches and honors and the taste of Sunbee at the same time, and it became a representative material of 'Unlimsanbang' after being passed on to the house. His naturalized style of painting and painting aesthetic have been influential to the art world in modern Korea until now, forming a painter 's vein for 200 years over 5 generations.