• The Science & Technology
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• v.32 no.9 s.364
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• pp.84-85
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• 1999

(주)자연사랑은 최근 기존의 일회용품을 대체할 품목으로 먹을 수 있는 빨대와 스티로폼을 개발하여 주목을 끌고 있다. 새로 개발한 이 제품들은 화학약품을 사용하지 않아 한번 사용한 빨대는 음식물 찌꺼기에 섞어 가축의 사료로 재활용할 수 있으며 땅 속에 매립해도 쉽게 분해되어 환경오염을 막을 수 있다. 이런 공로로 지난 3월 '장영실 과학문화상'환경부문 금상'을 수상한 김윤영사장은 연내에 해외 특허를 받아 미국을 비롯한 해외시장에도 본격 진출할 계획이라고 밝혔다.

• 발명특허
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• v.32 no.2 s.367
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• pp.78-79
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• 2007

• The monthly packaging world
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• s.347
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• pp.60-64
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• 2022

• Culinary science and hospitality research
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• v.16 no.4
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• pp.220-229
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• 2010

Brewing tea with regular teapots can cause a problem in keeping the temperature of the tea. Cold weather, a cold teapot, and/or the temperature of tea leaves make tea cold, lowering the temperature of the tea leaves that can also make the flavor of the tea leaves worse. This experiment shows both the problem and the solution to the temperature problem of tea leaves. To maintain the appropriate temperature and reduce the problem, we researched and developed a special straw for tea leaves as a result of this experiment The straw consists of various filtering holes(diameter 1~2 mm) with the height of 5 mm from the very bottom of the straw. Using the straw is better to keep higher temperature, better flavor, and the smell of tea. Also, the sensory evaluation shows that the overall taste of tea is improved(p<0.05).

• Journal of the korean academy of Pediatric Dentistry
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• v.34 no.3
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• pp.383-389
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• 2007

The purpose of this study was to investigate the prevalence of severe early childhood caries and feeding pratices in preschool children. The subjects of study were six hundred and seventy-two preschool children in Iksan city. Severe early childhood caries(S-ECC) was defined as the presence of one or more cavitated, missing due to caries, or filled smooth surfaces in primary maxillary anterior teeth. The caregivers of children were given a questionnaire including age, gender, birthweight, and feeding practices. The prevalence of S-ECC was 34.5%. The prevalence was significantly higher when there were the habit of sleeping while feeding, the habit of feeding sour or sweet content in the bottle, and the habit of using the pacifier. Birth weight, breast-feeding, bottle-feeding, and the sippy cup habit showed no significant association with the prevalence of S-ECC. There were significant positive associations between breast-feeding and sleeping while feeding, between bottle-feeding and the pacifier, between sleeping while feeding and sour or sweet content in the bottle, between sleeping while feeding and the sippy cup, between sleeping while feeding and the pacifier, and between the sippy cup and the pacifier. There were significant negative associations between breast-feeding and the pacifier.

• Journal of the korean academy of Pediatric Dentistry
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• v.30 no.3
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• pp.453-458
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• 2003

Usually Mylar strip and wedge or celluloid strip crown were used in conventional method of restoring proximal carious lesions of primary anterior teeth. But, these methods have some difficulties to place the matrix and wedge due to short crown lenth and interdental spacing of primary teeth. And it is difficult to form proper cavosurface margin due to the rigidity of matrix and inconvenience to support matrix by practitioner's hand in narrow oral cavity of child. This article describes an alternative technique for restoring carious lesions of primary anterior teeth using available straw. This method is very convenient and reduce chair time and it also allows good marginal adaptation.

• The Journal of the Acoustical Society of Korea
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• v.6 no.2
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• pp.19-29
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• 1987

The absorption coefficients of various length bundles of straws simulating perforated material were studied both theoretically and experimentally. For the theoretical predictions Zwikker and Kosten's theory was modified by adapting Biot's theory based on Poiseuille flow. The experimental data were collected using an impedance tube where the attenuation along the length of the tube was considered. The theoretically predicted values agreed very well with the experimentally measured ones for frequencies lower than 700Hz with bundles shorter than 120mm in length placed against the rigid end of the impedance tube. Configurations with an air gap between the end of a bundle and the rigid end were also investigated. Absorption coefficients were higher for 150mm bundles than for those of combined/air gap configurations with a total length of 150mm. Also for the fixed bundle lengths, absorption was found to increase with increasing air gap.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.619-620
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• 2023

본 논문에서는 탄소중립 중요성이 증대됨에 따라 일상 배출되는 생활 쓰레기 중 자원으로 재활용 할 수 있는 다양한 요소를 탄소중립실천요소로서 정의하고 각 행위를 자동적으로 분류하고자 한다. 딥러닝과 영상처리의 한 분야인 객체 인식 기술을 활용하여, 실시간으로 탄소중립실천요소를 인식하고 재활용 자원의 결과를 수집, 관리할 수 있는 모바일 앱 개발한다. 아울러, 플라스틱컵, 유리컵, 텀블러, 종이컵, 빨대 등 실제 재활용 자원의 이미지에 적용하여 인식을 수행하고 그 결과를 분석한다.

• Journal of the korean academy of Pediatric Dentistry
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• v.40 no.1
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• pp.11-20
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• 2013

The prevalence and interest of dental erosion seems to be rising in children all over the world. Thus, This study was performed to investigate the prevalence and severity of dental erosion in the primary molars at terminal stage nearing exfoliation, and associated risk factors. An examination was performed on 788 children using modified Linkosalo & Markkanen system, and questionnaires were gained. Association between dental erosion and the risk factors were statistically analyzed with chi-squared test and logistic regression analysis at a significance level of p < 0.05. As a result, 213 children (27%) showed dental erosion, and the mandibular left first primary molar was the most influenced tooth. According to the analysis of risk factors, frequent intake of carbonated drinks and fruit juices showed significant development of erosion (p < 0.05), and using straw for drinking fruit juices showed significant a reduction of erosion (p < 0.05).

• Journal of Convergence for Information Technology
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• v.12 no.1
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• pp.180-188
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• 2022

Goal of this study is to identify effect of Oral Motor Facilitation Technique(OMFT) on feeding development, tube weaning of PWS baby. Subject was 8months old PWS girl. 2 times of OT, 1 times of OMFT per weeks were provided from July, 2020 to June, 2021. Feeding development and skills was increased and could eat food by mouth after OMFT treatment. Especially, she could eat food by her mouth after 3mts of OMFT and age-appropriated food intake, chewing function, drinking by straw was increased. Through this case study, early detecting and treatment for feeding development of PWS is very important. OMFT is good treatment protocol for increasing feeding development and oral motor skills of PWS.