방풍통성산(防風通聖散)이 L-NAME 유발 및 SHR 흰쥐의 고혈압에 미치는 영향

이영화,김경철,이용태,Lee, Young-Hwa,Kim, Kyung-Chul,Lee, Yong-Tae 대한동의생리학회 1999 동의생리학회지 Vol.14 No.2

In order to get the effect of Bangpoongtongsungsan (BPS) water extract on the blood pressure of every 5 group of rats (in normal state of after 3 hours of unanesthetized) was measured and following results were obtained. 1. BPS intraperitoneal injection was not recognized as having the effect of decreasing blood pressure compared with Control on hypertension induced by L-NAME in young rats. 2. BPS oral administration was recognized as having the effect of decreasing blood pressure compared with Control on hypertension induced by L-NAME in young rats. 3. BPS oral administration was recognized as having the effect of decreasing blood pressure compared with Control on hypertension induced by L-NAME's continual injection and BPS continual oral administration in young rats. 4. BPS oral administration was recognized as having the effect of decreasing blood pressure compared with Control on hypertension induced by L-NAME's in adult rats. 5. BPS oral administration was not recognized as having the effect of decreasing blood pressure compared with Control on spontaneous hypertension rats. According to the above results. it is known that BPS extract oral administration decreased the blood pressure of hypertension induced by and more effective to the youth.

Ni-Cr계 합금을 이용한 정밀 박막저항체의 제조 및 특성

이영화,박세일,김국진,임영언,Lee Young Hwa,Park Se Il,Kim Kook Jin,Ihm Young Eon 한국전기전자재료학회 2006 전기전자재료학회논문지 Vol.19 No.1

Precision thin film resistors using evanohm R alloy were fabricated by do magnetron sputtering method. The physical and electrical properties of the resistors were studied after treatment of thermal annealing. The crystallization of the film was increased as the annealing temperature increase. Diffusion and oxidation of Cr and Al elements were occurred into the film surface. The minimum TCR values of 10.46 ppm/$^{\circ}C$ and 10.65 ppm/$^{\circ}C$ were measured at the annealing temperatures of $200^{\circ}C$ and $300^{\circ}C$, respectively. We are conducting additional studies to improve characteristics of our resistors for practical device application.

Ti/Au 이중층을 이용한 초전도 상전이 센서 제작

이영화,김용함,Lee, Young-Hwa,Kim, Yong-Hamb 한국전기전자재료학회 2008 전기전자재료학회논문지 Vol.21 No.10

We report on the development of transition edge sensors for x-ray detection. The sensor technology was based on the fabrication of a superconducting film on a thin membrane. A bilayer of a superconductor, Ti, and a noble metal, Au, was e-beam evaporated on a micromachined SiNx. Another Au layer was evaporated on the two side edges of the bilayer in order not to be affected by structural imperfections at the boundaries. With the method described in the present report, the superconducting transition temperature of the device was consistently achieved to near 80 mK with a sharp transition. The energy spectrum ueasured with the device provided 37 eV FWHM for 5.9 x-rays. We also discuss the design and fabrication considerations as well as the performance of the device in detail.

클린뷰티 화장품에 나타난 통합 브랜드 커뮤니케이션 연구

이영화,Lee, Young-Hwa 한국융합학회 2021 한국융합학회논문지 Vol.12 No.4

코로나 시대 마스크 착용으로 유해 성분을 배제한 화장품에 대한 관심이 커지며 '클린뷰티'가 주목받고 있다. 이에 본 연구는 2020년 국내 온·오프라인에서 유통되고 있는 클린뷰티 화장품 브랜드를 선정하여 분석하였다. 클린뷰티 브랜드 36개를 추출하고 전문가 분석을 통해 적합한 브랜드 20개를 선정하였다. 클린뷰티 화장품 브랜드 커뮤니케이션 분석을 위해 구성요소를 네이밍, 로고, 색채, 패키지, 웹사이트로 도출하여 설문조사하였다. 그 결과 네이밍은 자연, 건강 등을 연상하면 떠오르는 단어, 로고는 심플한 형태의 워드마크, 색채는 녹색이나 노란색계열, 패키지는 용기바디에 가운데 맞춤으로 구성된 심플한 형태, 웹사이트는 식물과 동물, 사람의 이미지를 선호하는 것으로 나타났다. 브랜드 커뮤니케이션 구성요소를 종합해 볼 때 자연, 깨끗한, 가벼운 이미지 등을 조화롭게 활용한 것이 클린뷰티 화장품 브랜드를 선호하는 요인으로 작용한 것을 알 수 있었다. 'Clean beauty' attracts attention with an increasing interest in cosmetics without harmful ingredients as people wear masks in the age of COVID-19. Thus, this study selected and analyzed clean beauty cosmetic brands circulated in Korea on/offline in 2020. This study extracted 36 clean beauty brands and selected 20 suitable brands through an experts' analysis. For an analysis of clean beauty cosmetic brand communication, components: naming, logo, color, package, and website were drawn to conduct a survey. Preferred were the words they come up with when they think of nature or health for naming; wordmarks in a simple form for logo; greenish or yellowish for color; the simple form aligned center on the container body for package; and the images of plants, animals, and humans for website. To sum up the components, utilizing natural, clean, and light images harmoniously, acted as a factor for preferring the clean beauty cosmetic brands.

유채 꽃가루 분말을 이용한 효모 배양배지 제조

이영화,김광수,장영석,최인후,이경보,Lee, Yong-Hwa,Kim, Kwang-Soo,Jang, Young-Seok,Choi, In-Hu,Lee, Kyeong-Bo 한국응용과학기술학회 2015 한국응용과학기술학회지 Vol.32 No.1

본 연구는 유채 꽃가루 분말의 영양성분 분석과 파쇄한 꽃가루 분말을 이용하여 효모 배양용 액체배지와 고체배지를 제조하여 효모 배양효율을 분석하였다. 유채 꽃가루 분말(100 g)은 탄수화물 58.9 g, 단백질 20.8 g, 지방 4.1 g, 회분 2.5 g 및 수분 13.7 g으로 구성되었다. 당질 중에서는 Fructose(13.7 g), Glucose(11.1 g)와 Sucrose(6.6 g), 미네랄 중에서는 K(606.7 mg)와 P(603.3 mg) 함향이 높았다. 유리 아미노산은 Glutamic acid(2,482.4 mg), Aspartic acid(2,136.5 mg), Lysine(1,648.3 mg), 및 Leucine(1,631.1 mg) 순으로 많았다. 유채 꽃가루 분말을 단독 또는 NaCl을 첨가하여 액체배지 및 고체배지 제조하고 효모를 배양한 결과, 꽃가루 분말이 15 g/L 이상 함유된 액체배지는 효모 배양 후 건물중이 YPD 배지(대조구)에 비해 많았고, 꽃가루 분말의 농도 의존적으로 효모 건물중이 증가하였다. 또한 액체배지에 NaCl을 1~20 g/L 추가 시 배양된 효모의 건물중이 한층 더 증가하였다. 유채 꽃가루로 제조한 고체배지를 이용하여 효모를 배양(48시간)한 결과, 콜로니(colonies) YPD 배지와 유사하게 잘 자랐다. The aim of this study was to analyze nutritional compositions of rapeseed pollen granules and to determine the possible usage of pollen granules as a yeast culture medium. Rapeseed pollen granules (per 100 g) were consisted of carbohydrate 58.9 g, protein 20.8 g, fat 4.1 g, ash 2.5 g and water 13.7 g. And fructose (13.7 g), glucose (11.1 g), and sucrose (6.6 g) of sugars and K (606.7 mg) and P (603.3 mg) of minerals were highly contained. In addition, free amino acids such as glutamic acid (2,482.4 mg), aspartic acid (2,136.5 mg), lysine (1,648.3 mg), and leucine (1,631.1 mg) were present at a higher level. When liquid medium, which was made from cracked pollen granules (5, 10, 15, 20, 25, 30, and 40 g/L), was tested for yeast culture, liquid medium containing pollen granules over 15 g/L showed higher yeast growth than YPD medium (control). Liquid medium containing both cracked pollen granules (15 g/L) and NaCl (1 ~ 20 g/L) improved yeast growth than the liquid medium without NaCl. In addition, when yeast growth was tested on solid medium made from pollen granules (15 g/L) at $30^{\circ}C$ for 2 days, yeast colonies were equally well-formed like those grown on YPD medium. Overall, rapeseed pollen granules have potential properties on yeast growth and could be used as a primary source for yeast culture.

감마선 검출을 위한 초전도 상전이 센서

이영화,김용함,Lee, Young-Hwa,Kim, Yong-Hamb 한국초전도학회 2008 Progress in superconductivity Vol.9 No.2

We are developing a sensitive gamma ray spectrometer based on superconducting transition edge sensors. The detector consists of a small piece of high purity Sn as an absorber and a Ti/Au bilayer as a temperature sensor. It is designed to measure the thermal signal caused by absorption of gamma rays. The mechanical support and the thermal contact between the absorber and the thermometer were made with Stycast epoxy. The bilayer was formed by e-beam evaporation and patterned by wet etching on top of a $SiN_X$ membrane. A sharp superconducting transition of the film was measured near 100 mK. When the film was biased to the edge of the transition, signals were observed due to single photon absorption emitted from an $^{241}Am$ source. The measured spectrum showed several characteristic peaks of the source including 59.5 keV gamma line. The full with at half maximum was about 900 eV for the 59.5 keV gamma line. The background was low enough to resolve low energy lines. Considerations to improve the energy resolution of the gamma ray spectrometer are also discussed.

척추후관절가동술이 만성요통환자의 통중과 요부안정성에 미치는 영향

이영화 ( Young Hwa Lee ),권원안 ( Won An Kwon ),이재홈 ( Jea Hong Lee ),김준현 ( Jun Hyun Kim ),배섬수 ( Sung Soo Bae ) 대한물리의학회 2008 대한물리의학회지 Vol.3 No.3

척수성 경수증에 대한 증례연구

이영화 ( Young Hwa Lee ),권원안 ( Won An Kwon ) 대한물리의학회 2010 대한물리의학회지 Vol.5 No.3

Purpose:Cervical spondylotic myelopathy is a varied clinical syndromes and the most serious condition of cervical spondylosis. Spinal cord dysfunction is often caused by the compression on spinal cord. The purpose of this report was to describe physical examination and the process of disorders on cervical spondylotic myelopathy(CSM). Methods:Three cases with cervical myelopathy were presented with magnetic resonance image(MRI), Nurick`s grade and Japanese Orthopaedic Association(JOA) score. Results:This studies showed a variable clinical course with gradual neurological deterioration in two cases. but one case was improved by operation and a regular aerobic exercise. MRI, Nurick`s grade, JOA score are a useful adjunct for CSM evaluation. Conclusion:The state of CSM is variable, which may affect conservative treatments and surgery. It is needed to be a carefull approach and studies for a conservative treatment and management on CSM.

실리콘 미세 가공을 이용한 열전형 미소유량센서 제작 및 특성

이영화 ( Young Hwa Lee ),노성철 ( Sung Cheoul Roh ),나필선 ( Pil Sun Na ),김국진 ( Kook Jin Kim ),이광철 ( Kwang Chul Lee ),최용문 ( Yong Moon Choi ),박세일 ( Se Il Park ),임영언 ( Young Eon Ihm ) 한국센서학회 2005 센서학회지 Vol.14 No.1

N/A A thermoelectric flow sensor for small quantity of gas flow rate was fabricated using silicon wafer semiconductor process and bulk micromachining technology. Evanohm R alloy heater and chromel-constantan thermocouples were used as a generation heat unit and sensing parts, respectively. The heater and thermocouples are thermally isolated on the Si₃N₄/ SiO₂/Si₃N₄ laminated membrane. The characteristics of this sensor were observed in the flow rate range from 0.2 slm to 1.0 slm and the heater power from 0.72 mW to 5.63 mW. The results showed that the sensitivities ((??(ΔV)/??(q)); AV : voltage difference, 4 : flow rate) were increased in accordance with heater power rise and decreasing of flow rate.

Meaning-making and Toulmin Elements in University Students` Argumentative Writing

이영화(Young Hwa Lee) 언어과학회 2011 언어과학연구 Vol.56 No.-

This study aims to analyze structures of argumentative writing of Korean university students based on meaning- making and Toulmin model. It also investigates the relationship between a successful and a non-successful pieces of work. The participants were 35 students, and the data comprised their argumentative essays. The findings revealed that most students used the basic Toulmin elements, claim, data, and warrant, with 78.9%, but a small number of the second elements, backing, qualifier, and rebuttal, were presented. While the successful essay established well organized ideational, interpersonal, and textual meaning-making with basic Toulmin elements, the lowest one failed to present desirable meaning-making despite both the basic and second Toulmin elements. This study concludes that Toulmin elements provided insufficient evidence to differentiate the overall quality of writing. Rather, the scores of the writing seem to derive from the meaning-making in the texts. (Sun Moon University)