• 한국약용작물학회:학술대회논문집
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• 2011.04a
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• pp.394-395
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• 2011

• 한국약용작물학회:학술대회논문집
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• 2011.04a
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• pp.390-391
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• 2011

• 한국약용작물학회:학술대회논문집
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• 2011.09a
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• pp.282-283
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• 2011

• 한국약용작물학회:학술대회논문집
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• 2011.04a
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• pp.384-385
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• 2011

• Journal of Haehwa Medicine
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• v.18 no.2
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• pp.37-45
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• 2009

In early 1970s, Electronic Manometers were researched and developed for modernization and objectification of pulse diagnosis. Method of finger pressing, also known as cuffs pressing, is essential for sensing a pulse wave. I think comprehension and deduction of problem from the existing Hi-soo type electronic manometer, will be important for making a better one. The Hi-soo type electronic manometer is constructed of cuff pressing type sensor, differential amplifier, transmitter and recorder. Pulse movement and pulse wave, gauging blood flow, is analyzed by pulse image of "Yixuerumen(醫學入門)". At standard of pulse wave, huanmai(緩脈) is distinguish from chishu(slow and fast, 遲數), fushen(float and sink, 浮沈), interference wave, modificated wave, and phase angel. The Hi-soo type electronic manometer had no explanation of formational mechanism, significantly different with pulse wave which is early known and reported. The strength of Hi-soo type electric manometer is use of cuff pressing type sensor. Above all, the importance of electric manometer is reading the pulse movement accurately then expressing it as pulse wave. From now on the improvement of precise sensor should make a progress.

• Proceedings of the Acoustical Society of Korea Conference
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• autumn
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• pp.407-410
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• 2004

우리나라 연근해 해역에서 발생하는 적조 현상은 매년 특정 시기에 끊임없이 나타나고, 그 피해액은 해를 거듭해갈 수록 증가하고 있다. 이러한 적조 발생을 조기에 탐지할 수 있는 것만으로도 그 피해는 상당히 줄어들 것이라고 여겨진다. 본 논문에서는 우리나라 연근해 해역에서 발생하는 적조의 우점종 플랑크톤인 Cochlodinium polykrikoides를 탐지하기 위한 방법으로 C. polykrikoides 의 개체수 변화에 따른 후방산란신호를 획득하여 그 상관관계에 관한 실험을 실시하였다. 실험에 사용된 주파수는 5MHz, 10MHz 이고, 적조 주의보와 적조 경보에 해당하는 개체수인 300cell/mL, 1000cell/mL 을 중심으로 개체수를 변화하였다. 필터링 후의 해수와 Cochlodinium 이 있는 해수의 체적산란 패턴 변화뿐만 아니라 Cochlodinium 의 개체수 변화에 따른 산란 패턴의 변화를 볼 수 있었다.

• Journal of Environmental Health Sciences
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• v.41 no.1
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• pp.17-23
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• 2015

Objectives: The cytotoxcities of Au, Ag, SWCNT, $SiO_2$, and ZnO nanomaterials were evaluated in order to assess their potential toxicological effects in in vitro cell models using colony forming efficiency (CFE) assay. Methods: The CFE assay of the test materials was carried out on Hep G2 cells. The size distribution of nanomaterials was studied by transmission electron microscopy (TEM). Changes in cell viability after treatment with a toxicant will result in a decreased number of colonies formed in comparison to solvent. Results: The TEM images show that all the particles except SWCNT and ZnO can be considered approximately spherical. The gold and $SiO_2$ nanoparticles show no response (no toxicity) in concentration response experiments. A statistically significant toxic effect was found in Hep G2 cells treated with Ag, SWCNT and ZnO nanomaterials. Conclusion: In this study, we considered CFE assay to be a promising test for screening studies for cytotoxicity with physicochemical analysis.

• Journal of Korean Elementary Science Education
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• v.36 no.4
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• pp.346-355
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• 2017

The 2015 revised national science curriculum encourages students to cultivate the science core competencies such as scientific thinking, science process skills, scientific problem-solving ability, scientific communication skill, scientific participation and lifelong learning ability. To fill this purpose, we practiced science writing classes based on core competencies and examined the effect of its application. The target unit was 'weather and our life', 'acid and base', 'speed of an object', and 'structure and function of our body' in the fifth grade of elementary school. The results were as follows. First, it was proven that science writing activities based on core competencies did not help improving science process skills of learners. Second, it had a significant effect on the improvement of the learner's self-directed learning ability, in particular, owner spirit, meta cognition and information search. Third, this strategy for science writing changed learners' scientific attitude positively. The above-mentioned results show that this science writing classes can be applicable as one of effective methods in cultivating science core competencies.

• Proceedings of the KAIS Fall Conference
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• 2009.12a
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• pp.942-945
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• 2009

경제적 성장과 더불어 의료서비스에 대한 국민들의 욕구는 지속적으로 증가하고 있다. 현 상황에서 각 병원들은 의료서비스 뿐만 아니라 의료 외적인 특화서비스를 제공함으로써 다수의 충성고객을 확보하고자 한다. 따라서, 환자 충성도와 의료 외적인 특화서비스의 상관관계는 집중적인 관심이 요구 되고 있다. 이에 본 연구에서는 서울소재 일개 3차병원 한 곳의 병원을 이용하는 고객들을 대상으로 의료서비스에 대하여 설문조사를 통하여 파악하고자 하였다. 조사결과 환자들의 특화서비스에 대한 만족도 여부와 충성도는 서로 상관관계가 있는 것으로 볼 수 있었다. 특히 충성도가 낮은 집단으로부터 특화서비스에 대한 만족도가 낮은 서비스가 있었기 때문에, 충성도가 낮은 고객들에 대해 서비스를 강화하고 보다 상세하게 불만족의 요인을 파악하기 위한 연구가 이루어져야 할 것이다.

• Herbal Formula Science
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• v.22 no.1
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• pp.141-150
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• 2014

Objectives : The purpose of this study was to investigate the effects of Polygonum tinctoria Niram(PTN) on atopic dermatitis(AD) in hairless mice induced by 2,4-dinitrochlorobenzene(DNCB). Method : They were divided into four group, Nor, Con, 1X and 5X, for evaluating the change of appearance of skin surface, skin hydration, thickness of epidermis and mast cell numbers during 30 days. Results : PTN suppressed symptoms of AD in appearance of skin and increased skin hydration for 1X and 5X. In histopathological examination, 1X and 5X significantly reduced the thickness of epidermis and number of mast cell in dermis. These results suggested that the PTN improved the AD-like symptoms of hairless Mice.