Radiation impacts on morphological and qualitative properties in common buckwheat (Fagopyrum esculentum) and tatary buckwheat (Fagopyrum tataricum) seeds

Je-Hyeok Yu,Min-Heon Yun,Seon-Mo Yang,Dong-Seop Kim,Young-Ho Yun,Kyung-Ho Ma,Eun-Ho Son,Sok-Young Lee,Hong-Sig Kim,Sun-Hee Woo 한국육종학회 2015 한국육종학회 심포지엄 Vol.2015 No.07

Breeding and cultivation techniques are being treated very severely regarding ecological and physiological development in buckwheat. This study was conducted to focus on the diversity occurring in the cultivated and tartary buckwheat and provide an overview of the characteristics and genetic resources activities. Morphological results showed that the height of common buckwheat ranges from 82-90cm, common buckwheat induced by 200Gy ranges from 52-75cm, common buckwheat induced by 300Gy ranges from 43-56cm, common buckwheat induced by 400Gy ranges from 33-60cm whereas the tartary buckwheat hight ranges from 65-87cm, and while it exposed to various radiation (200Gy, 300Gy and 400Gy), the obtained height ranges from 73-92cm, 55-80cm and 60-75cm respectively. However, the stems from the both cultivar are hollow and that’s why, the plant is very prone to lodging. The leaf color of common buckwheat was green, 200Gray, 300Gy 400Gy common buckwheat light green and green, whereas the tartary buckwheat green and bottle-green, 200Gray 300Gy 400Gy tatary buckwheat bottle-green, common buckwheat (control, 200Gy, 300Gy, 400Gy) stem color is light green and pink, flower color is white, tartary buckwheat (control, 200Gy, 300Gy, 400Gy) flower color is light green. The stem color from tartary buckwheat showed (200Gy, 300Gy, 400Gy) light green and light red color. The results revealed that the two buckwheat cultivars showed diversified characteristics.

비유탕 유과 제조를 위한 진공팽화기의 개발 및 공정변수에 따른 유과의 팽화특성

유제혁 ( Je Hyeok Yu ),류기형 ( Gi Hyung Ryu ) 한국산업식품공학회 2010 산업 식품공학 Vol.14 No.3

기존의 재래식 유탕팽화유과의 문제점을 개선하기 위하여 진공을 이용한 진공팽화기를 설계 제작하였다. 공정변수에 따른 진공팽화유과의 특성을 비교 분석하기 위하여 부피팽화율, 밀도, 절단강도, 색도, 미세구조를 측정하였다. 진공팽화기의 공정변수는 가열온도(100, 120, 140, 160, 180℃), 예열시간(0, 2, 4, 6, 8분), 진공팽화시간(5, 10, 15, 20분)이며, 가열온도 100℃, 예열시간 6분, 진공팽화시간 10분에서 진공팽화 유과의 부피팽 화율은 10.04로 가장 높게 측정되었고, 밀도는 0.15 g/cm3로 가장 낮게 측정되었지만, 부피팽화율 9.47, 밀도 0.16 g/cm3으로 측정된 가열온도 120℃, 예열시간 4분, 진공팽화시간 5분에서의 진공팽화유과가 유탕유과의 외관 및 조직과 가장 유사하였다. 절단강도는 가열온도 100℃, 예열시간 6분, 진공팽화시간 15분에서 140 g/cm2로 가장 낮게 측정되었다. 색도는 예열시간과 진공팽화시간이 증가함에 따라 백색도가 증가하는 경향을 보였고, 황색도는 감소하는 경향을 보였으며, 적색도는 유의적 차이가 없었다. 진공팽화유과의 백색도(L값)가 유탕팽화유과보다 25정도 높았으며, 적색도(a값)와 황색도(b값)는 유의적 차이는 보이지 않았으며, 진공팽화유과의 미세구조는 가열온도 120℃, 예열시간 4분, 진공팽화시간 5분에서 기공이 작고 균일하였다. 유탕팽화유과와 비교 시 절단강도는 유사하였으나, 부피팽화율은 낮았고, 밀도는 높았다. 셀이 균일하게 형성된 진공팽화의 미세구조와는 달리 유탕팽화유과의 미세구조는 표면과 내부층의 차이가 확인되었다. 진공팽화기의 최적 공정조건은 진공팽화유과의 품질을 고려 할 때, 가열온도 120℃, 예열시간 4분, 진공팽화시간 5분으로 판단되었다. The aim of this study was to analyse the quality of Yukwa puffed by using a vacuum puffing machine and compare to deep-fried Yukwa. The effect of vacuum puffing condition including heating temperature(100-160℃), preheating time(0-8 min) and vacuum puffing time(5-20 min) on physical and microstructure characteristics of the Yukwa was investigated. Vacuum puffed Yukwa at 100℃ heating temperature, 6 min preheating time and 10 min puffing time had highest value in volumetric expansion ratio(10.04) and lowest value in bulk density(0.15 g/cm3). The breaking strength showed the lowest value of 140 g/cm2 in vacuum puffing Yukwa at 100℃ heating temperature, 6 min preheating time and 15 min puffing time. The Yukwa puffed with the vacuum puffing machine at 100℃ heating temperature, 6 min preheating time and 15 min puffing time had the higher value of bulk density and the lower value of volumetric expansion ratio than those of deep-fried Yukwa. Increasing preheating time and vacuum puffing time caused an increase in white and an decrease in yellowness. The vacuum-puffed Yukwa exhibited smaller and uniform cell structure, while deep-fried Yukwa exhibited apparently in larger pores inside and smaller pores near the surface layer. The optimum condition of vacuum puffing machine for the production of vacuum-puffing Yukwa was 120℃ heating temperature, 4 min preheating time and 5 min puffing time.

Impaired dendritic cell-mediated immunity in lymphoid organs may underlie the high brain viral load to determine lethality in SARS-CoV-2-infected K18-hACE2 mice

Yu Jin Lee,Sang Hyeok Seok,Na Yun Lee,Yoon Woo Lee,Hee Jung Chang,Ji-Yeon Hwang,Da In On,Hyun Ah Noh,Jun-Won Yun,Jeon-Soo Shin,Jun-Young Seo,Ki Taek Nam,Ho Lee,Ho Young Lee,Jun Won Park,Je Kyung Seong 한국실험동물학회 2022 한국실험동물학회 학술발표대회 논문집 Vol.2022 No.1

Murine COVID-19 lethality is characterized by lymphoid depletion associated with suppressed antigen presenting cell functionality

Yu Jin Lee,Sang Hyeok Seok,Na Yun Lee,Jun Won Park,Je Kyung Seong,Ho Young LEE 한국실험동물학회 2023 한국실험동물학회 학술발표대회 논문집 Vol.2023 No.2

개회충 유충 감염에서 발생되는 호산구성 폐질환의 특성

김유진 ( Yu Jin Kim ),경선영 ( Sun Young Kyung ),안창혁 ( Chang Hyeok An ),임영희 ( Young Hee Lim ),박정웅 ( Jung Woong Park ),정성환 ( Seong Hwan Jeong ),이상표 ( Sang Pyo Lee ),최동철 ( Dong Chull Choi ),정영배 ( Young Bae Je 대한결핵 및 호흡기학회 2007 Tuberculosis and Respiratory Diseases Vol.62 No.1

연구배경: 개흡충증은 한국에서 호산구증다증과 호산구성 폐질환을 일으키는 흔한 원인의 하나이다. 우리는 개흡충증에 의한 호산구성 폐질환의 특장을 분석하였다. 방법: 2001년 9월 1일부터 2006년 3월 30일까지 개회충 2기유충에 의한 호산구증다증으로 진단 받은 141명의 환자들을 대상으로 하였다. 본 연구를 위해 단순 흉부 방사선 촬영. 흉부 컴퓨터단층촬영, 기관지내시경, 기관지폐포세척술과 각종 혈액학적 검사를 시행하였다. 개회충증의 진단은 개회충 2기유충의 순수 분비배설 항원을 사용하였다. 결과: 141명의 환자 중 32명이 개회충에 의한 호산구성 폐질환으로 진단되었다. 젖빛유리양상이 컴퓨터단층촬영에서 지배적으로 23/32명(71.9%)이었다. 13/32명(40.6%)은 무작위적 구역적 분포를 보였다. 흉수액이 9/32명(28.1%)에서 관찰되었다. 28/32명(87.5%)이 호흡기 증상을 호소하였다. 11/32명(34.4%)은 호흡기 증상과 소화기 증상을 동시에 호소하였다. 12/32명(37.5%)에서 간에 국소의 저음영의 침윤을 보였다. 결론: 개회충에 의한 호산구성폐질환의 임상적, 방사선적 특성은 다발성의 결절성 또는 경화성의 젖빛유리음영이 양폐 상하엽에 무작위적 분포를 하는 것이다. 앞으로 우리나라에서 호산구 증다증과 폐침윤을 보이는 성인에서 감별진단을 위해 개회충증의 가능성을 고려해야 할 것으로 판단된다. Background: Toxocariasis is a common cause of eosinophilia and eosinophilic lung disease in Korea. We analyzed the characteristics of eosinophilic lung disease in toxocariasis. Method: One hundred and forty one patients with eosinophilia caused by a toxocara larval infection were evaluated from September 1, 2001 through March 30, 2006. The plain chest x-ray, chest CT(computed tomography), and bronchoalveolar larvage(BAL) were examined. A diagnosis of toxocariasis was made by ELISA using that secretory-excretory antigen from the T. canis larvae. Results: Toxocarial eosinophilic lung diseases was diagnosed in 32 out of 141 patients. Ground glass attenuation was the main feature on the CT scans in 23 out of 141 patients (71.9%). Thirteen patients (40.6%) had a random in zonal distribution on CT. Pleural effusion was observed in 9 patients (28.1%). Twenty eight patients (87.5%) complained of respiratory symptoms. Eleven patients (34.4%) had gastrointestinal symptoms and 12 patients (37.5%) had liver infiltration. Conclusions: The most common findings of the chest CT in patients with toxocariasis was a randomly distributed ground grass attenuation. A toxocara infection should be considered in a differential diagnosis of patients who exhibit pulmonary infiltration with eosinophilia in Korea. (Tuberc Respir Dis 2007; 62: 19-26)

Effect of increased <i>p</i> CO ₂ in seawater on survival rate of different developmental stages of the harpacticoid copepod <i>Tigriopus japonicus</i>

Oh, Je Hyeok,Kim, Dongsung,Kim, Tae Won,Kang, Teawook,Yu, Ok Hwan,Lee, Wonchoel ZOOLOGICAL SOCIETY OF KOREA 2017 ANIMAL CELLS AND SYSTEMS Vol.21 No.3

<P><B>ABSTRACT</B></P><P>The rapid increase in carbon dioxide levels in seawater is causing ocean acidification and is expected to have significant effects on marine life. To explore the ability of the harpacticoid copepod <I>Tigriopus japonicus</I> to adapt to an increased concentration of dissolved carbon dioxide (CO<SUB>2</SUB>) in seawater, we compared the survival rates of adult and nauplius stages at 400, 1000, and 1550 ppm <I>p</I>CO<SUB>2</SUB> over a 14-day period. The survival rate of <I>T. japonicus</I> dramatically decreased over time with increase in <I>p</I>CO<SUB>2</SUB> concentration. At 1550 ppm, the survival rate showed a decrease of more than 20% at the end of the experimental period over that at 400 ppm. Furthermore, the survival rate decreased by a greater amount at all concentrations in nauplii than in adults, with a greater effect in wild-collected specimens than in culture-derived individuals. The results suggest that future ocean acidification may negatively influence the sustainability of <I>T. japonicus</I> and thus may eventually influence benthic ecosystems.</P>

Novel Chest Compression Depth Measurement Sensor Using IR-UWB for Improving Quality of Cardiopulmonary Resuscitation

Kim, Yeomyung,Yu, Byung Gyu,Oh, Je Hyeok,Kim, Tae Wook IEEE 2017 IEEE SENSORS JOURNAL Vol.17 No.10

<P>Cardiac arrest is a common cause of death in the world. Immediate high-quality cardiopulmonary resuscitation (CPR) improves the chances of survival of cardiac arrest patients. In particular, maintaining an adequate chest compression depth (CCD) during CPR is a key determinant for survival from cardiac arrest. If it is possible to measure the CCD accurately during CPR, we could increase the survival rate of patients by improving the quality of CPR. This work proposes a new sensor that could measure the CCD accurately during CPR. Compared with existing sensors that utilize pressures or accelerometers, the proposed sensor employs distance measurements based on the time-difference-of-arrival using impulse-radio ultra-wideband (IR-UWB). The method directly measures the CCD using two antennas at the chest and at the back, thereby eliminating the distance error under CPR environments, which is present in existing accelerometer sensors. The designed sensor has an 0.08 mm resolution, and an inaccuracy of less than +/- 1.25 mm, within a range of 0-40 cm. This sensor was applied to a CPR manikin to measure the CCD in an environment where CPR is performed.</P>

수분함량과 온도에 따른 즉석팽화 쌀 스낵의 물리적 특성

김철(Jin Tie),유제혁(Je-Hyeok Yu),류기형(Gi-Hyung Ryu) 한국식품영양과학회 2012 한국식품영양과학회지 Vol.41 No.6

멥쌀, 찹쌀, 찐멥쌀의 수분함량(9, 12, 15, 18%)과 즉석팽화기의 팽화온도(200, 210, 220℃)를 달리하여 제조한 즉석 팽화스낵의 체적밀도, 색도, 수분용해지수와 수분흡착지수, 미세구조 등의 물리적 특성을 조사하였다. 즉석팽화스낵 제조 시 수분함량과 팽화온도가 증가함에 따라 체적밀도는 감소하는 경향을 나타내었다. 색도에서 수분함량이 감소할수록, 팽화온도가 증가할수록 L값은 감소하는 경향을 나타내었고 a, b값은 증가하는 경향을 나타내었다. 수분용해지수와 수분흡착지수는 수분함량과 팽화온도가 증가할수록 증가하는 경향을 나타내었다. 멥쌀, 찹쌀, 찐멥쌀 간에는 체적밀도, 파괴력, 수분용해지수와 수분흡착지수에서 차이를 나타내었고 색도에서는 큰 차이를 나타내지 않았다. 미세구조는 수분함량이 9%에서 15%로 증가함에 따라 기공의 크기가 작고 균일하게 분포되었으며 찹쌀 즉석팽화스낵의 기공이 가장 작고 균일하게 나타났다. The physical properties of instant puffed rice snacks with non-glutinous, glutinous, and steamed non-glutinous rice were evaluated at different moisture content and puffing temperatures. Raw materials were tempered to 9%, 12%, 15%, and 18% moisture content and puffed at 200℃, 210℃ and 220℃. With the increase in moisture content and puffing temperature, puffed snacks were less bulky. As the moisture content decreased and puffing temperature increased, the whiteness (L) value of puffed snacks decreased, while the redness (a) and yellowness (b) values increased. WSI and WAI were higher with an increase in moisture content and puffing temperature. Instant puffed rice snacks made from non-glutinous, glutinous, and steamed non-glutinous rice showed differences in bulk density, WSI, and WAI, while no difference was found in color values. When the moisture content increased from 9% to 15%, the cells within the products became more uniform and smaller. The instant puffed rice snacks made from glutinous rice showed the smallest and most uniform cell structure.

Big Data Analysis on Isotopic Trend in Various Raidoactive Wastes of Decommissioned Nuclear Power Plants

Hyuk Han,Seung Uk Yoo,Dong hyeok Park,Yu Bin Ko,Chang Je Park 한국방사성폐기물학회 2020 한국방사성폐기물학회 학술논문요약집 Vol.2020 No.07

Co-SPND Initial Sensitivity Calculation and Activation Analysis With MC Simulation

Hyuk Han,Seung Uk Yoo,Chang Je Park,Yu Bin Ko,Dong Hyeok Park 한국방사성폐기물학회 2022 한국방사성폐기물학회 학술논문요약집 Vol.20 No.1

Self-Powered Neutron Detector (SPND) is one of devices for in-core fluxes detecting without external electricity source. SPND consisted with emitter, insulator and collector. When neutrons reacted with emitter material, it generates electrons and these electrons cross insulator area to make electric signal in collector area. For calculating sensitivity of SPND with Monte-Carlo code such as MCNP, many physical components must be considered. Cobalt shows that prompt signal and relatively low signal comparing with other delayed signal SPNDs. Initial sensitivity was calculated as 4.28×10?22 A/nv-cm for one electron. Due to Cobalt’s complex decay chain and maintaining high efficiency of SPND, it is necessary to analysis the effect of activation of emitter. Therefore, the DPA (Displacements Per Atom) assessment and activation analysis of the detector components have been evaluated with MCNP 6.2 and ORIGEN-S. With these activation analysis results, that is expected to be used to determine the shielding thickness of the storage system.