산처리(酸處理) 조건(條件)이 한천(寒天)의 수율(收率) 및 성질(性質)에 미치는 영향(影響)

박영이,이철,양한철,Park, Young-Yi,Lee, Chul,Yang, Han-Chul 한국식품과학회 1985 한국식품과학회지 Vol.17 No.5

참우뭇가사리 (Gelidium amansii sp.)를 원예(原藻)로 하여 추출조건( 抽出條件)(산(酸)의 종류(種類)와 농도(濃度) 및 추출시간(抽出時間) 등)에 따른 한천(寒天)의 수율(收率)과 이화학적성질(理化學的性質)을 분석(分析)하였으며, 조건별(條件別)로 추출(抽出)된 한천(寒天)에 대하여 agarose와 agaropectin의 비율(比率)을 측정(測定) 검토(檢討)하였다. 자숙중(煮熟中)에 염산(鹽酸), 황산(黃酸) 및 초산(酢酸)을 가했을 때, 추출(抽出)된 한천(寒天)의 수률(收率)과 젤리강도를 비교(比較)한 결과(結果) 염산(鹽酸)을 가하여 추출(抽出)한 것이 가장 우수(優秀)하였으며 산(酸)의 알맞은농도(濃度)는 0.005-0.01N HCI의 범위임을 알았다. 산(酸)을 첨가하지 않고 추출(抽出)한 대조구(對照區)의 수율(收率)과 젤리강도는 13.3%, $306g/cm^2$였다. 산(酸)의 종류(種類)와 농도별(濃度別)로 가장 높은 수율(收率)을 보인 추출조건(抽出條件)은 0.007N HCI의 38.7%, 0.007N $H_2SO_4$의 40.5%. 0.05N $CH_2 COOH의 42.4%였다. 그리고 가장 높은 젤리강도를 보인 추출조건(抽出條件)은 0.005N HCI일 때의 $511g/cm^2$, $0.005N\;CH_2 COOH일 때의 $463g/cm^2$, 0.01M $CH_2COOH$ 일때의 $436g/cm^2$였다. 그리고 구(對照區)와 젤리강도 및 수율(收率)이 가장 높게 나타난 산처리추출(酸處理抽出)된 한천중(寒天中) agarose의 함량이 가장 많은 것은 젤리강도가 가장 높은 0.005N HCI 처리구한천(處理區寒天)이었으며, 이때 성분(成分)과 황산기(黃酸基)의 함량은 가장 적었다. Agar was prepared from domestic agarophyte (Gelidium amansii) by a process of acid extraction. Optimal conditions in the acid treatment of the seaweed and the gelling properties of the agar thus prepared were investigated. The yield and gel strength of the control (the agar extracted with distilled water) showed 13,3% and 306g/$cm^2$, respectively. The yield of 38.7% was obtained when agar was extracted with 0.007N Hydorchloric acid while the gel strength of agar,511g/$cm^2$ was observed with the agar extracted with 0.005N Hydorchloric acid solution. The agar extracted with hydrochloric acid solution showed excellent properties of agar at the acid concentration range 0.005N-0.01N The cooking time of 60 min. was found to be effective to the yield and also to the gelling property of the agar and the cooking longer than 60 min. was proved to be destructive to agar. In general, yield and gelling properties of the agar obtained showed a close relation to the acid concentration and cooking time, but no consistent influence on the contents of ash and sulfur trioxide.

힘-토크 센서가 없는 로봇 팔의 DC모터 전류 값을 이용한 컴플라이언스 제어기 설계

박영이,백준영,이민철 제어로봇시스템학회 2008 제어로봇시스템학회 국내학술대회 논문집 Vol.2008 No.10

조정래의 < 태백산맥 > 연구

박영이 수련어문학회 1989 睡蓮語文論集 Vol.16 No.-

N/A

Fe-6 (Cu-Sn) 소결합금의 기계적 성질에 미치는 Sn 첨가량의 영향

박영도,김도연 대한금속재료학회(대한금속학회) 1983 대한금속·재료학회지 Vol.21 No.3

The effects oP Sn contents and sintering temperature on dimensional change, tensile strength and hardness of sintered Fe-6 (Cu-Sn) alloy were investigated. Due to liquid phase occuring during sintering, all the specimens showed dimensional expansion after sintering and the sintering temperature at which a relatively large expansion occured decreased with Sn content. Thus the addition of small amount of Sn in place of Cu aids the sintering operation because it lowers the liquid phase forming temperature. From mechanical property tests, it has been shown that the properties obtained from compacts of Fe-4Cu-2Sn composition sintered at 900℃ were similar to those obtained from Fe-6Cu compacts sintered at 1100℃. For the specimens with larger amounts of Sn, a significant decrease in tensile strength was observed. Therefore, it is concluded that the optimum ratio of Cu : Sn is 2 : 1. The microstructures of the sintered specimens are presented and an attempt is made to relate these to the mechanical properties and dimensional change after sintering.

조건 평균법에 의한 난류 예혼합 화염편 구조와 전파 속도 예측

박영도(Yeongdo Park),허강열(Kang Y. Huh) 한국연소학회 2021 한국연소학회지 Vol.26 No.4

A governing equation is derived from the equation of the reaction progress variable for the conditional flamelet structure and the turbulent burning velocity in turbulent premixed combustion. Direct numerical simulations are conducted for constant density flames to validate the newly derived conditional flamelet equation. Good agreement is shown between the conditional flamelet equation and the flamelet structures and turbulent burning velocities from DNS. They are validated for laboratory flames as well by numerical solutions of the modified laminar premixed flame code in Cantera. Reasonable agreement is shown with a tuning constant for turbulent diffusivity to consider the uncertainty involved in each experimental setup and conditions in the references.

유색감자 추출물의 항돌연변이 및 항암 활성

박영은,정진철,조현묵,황영선,이현진,최수산나,이수진,박은선,고은아,김난솔,임정대,정명근 한국작물학회 2008 한국작물학회지 Vol.53 No.1

본 연구는 괴경 내부에 적색 및 보라색의 안토시아닌 색소를 함유한 유색감자의 추출물을 대상으로 S. typhimurium TA98과 TA100 균주의 돌연변이 유발여부를 확인하였고, 직접돌연변이원인 4-nitroquinoline-1-oxide(4-NQO)와 간접 돌연변이원인 bozo(a)pyrene(BaP)에 의해 유발될 수 있는 돌연변이에 대한 항돌연변이 활성과 6종의 인간 암세포주(전립선암세포주: LNCaP, 결장암 세포주: HCT-15와 SW-620, 위암 세포주: ACHN, 폐암 세포주: A549, 백혈병 세포주: MOLT-4F)를 대상으로 SRB 방법을 이용하여 항암활성을 비교하였다. 그 결과 유색감자 중 괴경 내부에 보라색의 안토시아닌을 다량 함유한 자영 품종이 다른 품종에 비해 높은 수준의 항돌연변이활성 및 항암활성을 나타내었으며, 특히 자영 품종의 추출물은 다른 세포주 보다 전립선암 세포주에 대한 항암활성이 특이적으로 우수한 양상을 확인하였다. 자영 품종의 추출물은 5ug/mL 이상의 농도에서 암세포의 증식을 억제할 뿐 아니라, 전립선암 세포주 LNCaP와 PC-3에 대해 세포사멸을 유발하는 결과를 Cell Death Detection ELISA와 TUNEL Assay로 확인하였고, 세포사멸과 연관된 유전자의 발현분석을 western blot으로 확인하였다. 이상의 결과에서 괴경 내부에 안토시아닌을 함유한 유색감자는 괴경 내부의 색상이 백색인 일반감자에 비해 강한 항돌연변이활성 및 항암활성을 나타내므로 유색감자는 기능성이 증대된 식용감자로서의 이용가치가 충분하며, 유색감자를 이용한 기능성식품 소재개발 및 의료산업의 신규소재화가 가능하리라 판단된다. Colored potatoes are an excellent source of dietary polyphenols including anthocyanins. Generally, anthocyanins from fruits and vegetables exhibit anti-carcinogenesis and anti-cancer properties in vitro test. This experiment was conducted to know the effects of colored potato extracts contained anthocyanins on antimutagenic activity and anticancer activity to six human cancer cell lines containing LNCaP (androgen-dependent) prostate cancer cells. Extracts of three colored potatoes ('Hongyoung', 'Jayoung' and 'Jasim') and the white potato ('Superior') cultivars were used in this study. The extracts of three colored potatoes inhibited the mutagenicities induced by direct mutagen such as 4-nitro-quinoline-1-oxide (4-NQO) and another indirect mutagens of bezo(a)pyrene (BaP). Also, the extracts of 'Hoyoung' and 'Jayoung' showed higher antimutagenic activity than 'Jasim' and 'Superior' against to direct or indirect mutagen on both strains of TA98 and TA100. The activity of growth-inhibitory of extract of four potato cultivars were screened by SRB (sulphorhodamine B) method on diverse human cancer cells representing different types of cancers. Among the extract of four potato cultivars, the extract of 'Jasim' showed moderate inhibition on proliferation of LNCaP, ACHN and MOLT-4F cells and did not inhibit the proliferation of other cancer cells. On the other hand, extract of 'Superior' did not inhibit the proliferation of any tested cancer cell lines. However, the extracts of 'Hongyoung and Jayoung' inhibited the proliferation of cancer cells with GI50 values ranging from 2.5 to 30~;~mug/mL . On the basis of the GI50 values, it is clear that LNCaP cells were more sensitive to extracts of colored potato cultivars than other cancer cells. The extract of 'Jayoung' at 30~;~mug/mL were more active and inhibited cell proliferation, and induced apoptosis in LNCaP cells. This result revealed that the extracts of colored potatoes are expected to be good candidate for development into source of antimutagenic and anticancer agent.

양방향제어를 이용한 풍력발전용 DFIG의 특성

박영도(Young-Do Park),이우석(Woo-Suk Lee),서영택(Young-Taek Seo),오철수(Chul-Soo Oh) 대한전기학회 2000 대한전기학회 학술대회 논문집 Vol.2000 No.7

특집 : 「 동해 」 지명에 대한 지리학 세미나 ( Special Issue : Seminar on the Name of the Tong Hae ( East Sea ) )

박영한 대한지리학회 1992 대한지리학회지 Vol.27 No.3

카자흐스탄 최초의 무성영화 <켈린>에 재현된 고대 튀르크 전통과 텡그리(Tengri) 신앙

박영은(Park, Young Eun) 한국영화학회 2012 영화연구 Vol.0 No.53

This paper aims at analyzing Ermek Tursynov’s film <Kelin> through the category of ancient Turkish history and tradition, primitive faith and tengri belief, and the representation of a belief in the coexistence of life in order to examine how the film works as a driving force for the recovery of Kazakhstan’s identity in the post-Soviet era. It is one of the most important current trends of Kazakhstan’s film industry to revive the spiritual and cultural heritage of Central Asian mythology and folk beliefs, which had been forbidden for the Soviet period. From this perspective it is clear that the revival of the heritage of Central Asia will be a valuable subject. In this film, first of all, an attention should be paid to the structure of mise en scene, of which the director takes advantage to represent his confidence in the spirit and power of the Turks. He presents the relationship between nature and humans through continuous close-up shots, creates the atmosphere of animistic world through the bird’s eye view, and establishes an aura of shamanism through the eyes of wolves and falcons, the totems of the Turks. Of all things, we should take the fact that <Kelin> is a silent film into consideration, in which appears no difference between the language of human and the sounds of animals. These are to reflect the intention of the director, who tries to highlight the world that animals and humans live in harmony with each other. <Kelin> is not a simple film which reproduces the ancient customs of the Turks, but a film with strong messages. What the director Ermek Tursynov tries to reestablish in this film is new values for the future of Kazakhstan since he believes that it is possible for the present and the future generations of Kazakhstan recovering their national identity only when they are able to keep the memories of the past.

혼란스러운 시각의 영향에 따른 보행요소들의 평가

박영한,배성수,김경 대한물리치료학회 2000 대한물리치료학회지 Vol.12 No.1

BACKGROUND AND PURPOSE. The purpose of this study is to investigate the effect of the disturbed vision on the gait distance parameters on the healthy young population. SUBJECTS. Twenty four healthy college aged individuals are randomly assigned to both a condition with a strobe light and the other condition without a strobe light. METHODS. The instrumentation used for gait analysis is the GaitRite electronic walkway system with a personal IBM computer. The examiner asked all the subjects to walk 6 times on the gait mat without the strobe light and 6 times on the mat with the strobe light. The first 4 trials were practice and the last two trials were recorded in both conditions. The gait parameters analyzed were as follows : velocity, cadence, step length, and heel to heel base of support. RESULTS. Paired samples t-test used for this study did not found any significant differences between the two conditions because the p-values that were analyzed on the experiment were greater than 0.05. The gait parameters that were analyzed included : cadence, velocity, left and right heel to heel base of support, and left and right step length. DISCUSSION AND CONCLUSION. Based on this population, the condition of disturbed vision via the effect of the strobe light was not significantly challenging to compromise the body's sensory systems. However, in the elderly population, these systems can undergo age related changes. Visual changes rapidly decline in people 60 to 80 years of age and changes in the vestibular system include 20-40% reduction in hair cells.