http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Kim, Kihwan,Kim, Juran,Gang, Myeng Gil,Kim, Se-Ho,Song, Soomin,Cho, Yunae,Shin, Donghyeop,Eo, Young-Joo,Jeong, Inyoung,Ahn, Seung Kyu,Cho, Ara,Kim, Jayeong,Yoon, Seokhyun,Choi, Pyuck-Pa,Jo, William,Ki Elsevier 2019 Solar energy materials and solar cells Vol.195 No.-
<P><B>Abstract</B></P> <P>In this work, copper indium gallium selenide (Cu(In,Ga)Se<SUB>2</SUB>; CIGS) absorbers were grown on polyimide (PI)/molybdenum substrates by a three-stage co-evaporation process at various temperatures, film formation was systemically studied using various advanced characterization methods such as transmission electron microscopy, micro-Raman spectroscopy, Kelvin probe force microscopy, and atom probe tomography. The CIGS films on PI were found to exhibit considerable physical and electrical variations with respect to the process temperature of three-stage co-evaporation. In particular, when the process temperature reached 400 °C, the CIGS absorber on PI began to exhibit controlled microstructure and intergrain properties. By adjusting the microstructure and intergrain properties of the absorber films by means of the process temperature of three-stage co-evaporation, flexible CIGS solar cells on PI with an efficiency of 16.7% (with anti-refection coating) were achieved.</P> <P><B>Highlights</B></P> <P> <UL> <LI> CIGS absorber films were grown on flexible polyimide/molybdenum substrates. </LI> <LI> Low-temperature three-stage process (≤440 °C) with extrinsic Na addition was used to CIGS growth. </LI> <LI> CIGS film evolution was systemically observed using advanced material characterization techniques. </LI> <LI> Highly efficient CIGS cells on flexible polyimide substrates were realized while maintaining process manufacturability. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Detects abnormal behavior using motor power consumption
KiHwan Kim(김기환),Su-Mi Ryu(류수미),Min-Kyu Kim(김민규),Young-Jin Kang(강영진),HyunHo Kim(김현호),HoonJae Lee(이훈재),Jin-Heung Lee(이진흥) 한국컴퓨터정보학회 2018 韓國컴퓨터情報學會論文誌 Vol.23 No.10
In this paper, we used LSTM as a method to detect abnormal behavior of motors. We fixed the high layout size to 1 and changed the range of the input values and the neural network structure to see what change in power consumption prediction. Now, as the fourth industrial revolution era, smart factories are attracting attention. All the physical actions of smart factories are done using motors. Continuous monitoring of motor malfunctions helps to detect malfunctions and efficient operation. However, it is difficult to acquire the power consumption constantly due to the influence of the noise. We have experimented with a simple experimental environment, a method of predicting similarity to input data by adjusting the range of the input data or by changing the neural network structure.
GATA25, a novel regulator, accelerates the flowering time of Arabidopsis thaliana
Kim Kihwan,Lee Jooeun,Kim Byeonggyu,Shin Juhyung,Kang Tae-An,Kim Won-Chan 한국응용생명화학회 2022 Applied Biological Chemistry (Appl Biol Chem) Vol.65 No.2
Intrinsic and exogenous signals in conjunction precisely regulate the initiation of flowering. Both signals influence flowering time, which is an integral part of plant reproduction. The signals converge through different pathways, and their coordinated action leads to the onset of flowering. Genetic pathways related to the regulation of flowering time are well-known from research into the molecular genetics of Arabidopsis thaliana. Specifically, crucial components of the photoperiodic pathway and floral integrators play a critically significant role in flowering. In this study, we found that GATA25 is a novel transcription factor that accelerates flowering time under long days. GATA25 encodes C-X2-C-X20-C-X2-C conserved cysteine residues of the zinc-finger domain and CCT domain which process photoperiodic flowering and regulate circadian rhythms. Flowering was accelerated by overexpression of GATA25 throughout the Arabidopsis thaliana. In contrast, GATA25 fused to SRDX (SUPERMAN repressive domain X)-motif plants showed delayed flowering. We also demonstrated that GATA25 induced the expression of floral integrator genes and photoperiodic pathway-related genes. Together, these results suggest that GATA25 might act to accelerate flowering time. Intrinsic and exogenous signals in conjunction precisely regulate the initiation of flowering. Both signals influence flowering time, which is an integral part of plant reproduction. The signals converge through different pathways, and their coordinated action leads to the onset of flowering. Genetic pathways related to the regulation of flowering time are well-known from research into the molecular genetics of Arabidopsis thaliana . Specifically, crucial components of the photoperiodic pathway and floral integrators play a critically significant role in flowering. In this study, we found that GATA25 is a novel transcription factor that accelerates flowering time under long days. GATA25 encodes C-X 2 -C-X 20 -C-X 2 -C conserved cysteine residues of the zinc-finger domain and CCT domain which process photoperiodic flowering and regulate circadian rhythms. Flowering was accelerated by overexpression of GATA25 throughout the Arabidopsis thaliana . In contrast, GATA25 fused to SRDX (SUPERMAN repressive domain X)-motif plants showed delayed flowering. We also demonstrated that GATA25 induced the expression of floral integrator genes and photoperiodic pathway-related genes. Together, these results suggest that GATA25 might act to accelerate flowering time.
Interferon Alpha-2a Reduces Early Erythema After Full-Thickness Skin Graft in the Pig
KIM, JUN SIK,SON, DAEGU,CHOI, TAE HYUN,HAN, KIHWAN,KIM, JUN HYUNG,CHO, HYUN MI,KIM, WON HEE,KIM, SANG-HYON,KIM, NAM GYUN,LEE, KYUNG SUK,HWANG, O. HYUN,ROH, GU SEOB,PARK, JUNGBIN Blackwell Publishing Inc 2009 Dermatologic surgery Vol.35 No.10
<P>BACKGROUND</P><P>Skin grafting is a commonly performed procedure, but studies of changes in the levels of cytokines after skin grafting have not been reported.</P><P>OBJECTIVE</P><P>We examined changes in cytokines and the degree of erythema after skin grafting in pigs in the control group. Interferon alpha (IFN-α) was injected to reduce erythema, and subsequent changes in cytokines and the degree of erythema were examined in the experimental group.</P><P>METHODS</P><P>Vascular endothelial growth factor (VEGF), thrombospondin-1 (TSP1), and CD31 were examined using Western blot analysis and immunohistochemistry. The degree of erythema was measured at 2, 4, and 8 weeks using a chromometer.</P><P>RESULTS</P><P>In the control group, VEGF increased at 2 weeks and decreased at 4 and 8 weeks. TSP1 increased over time. CD31 increased to 4 weeks and decreased at 8 weeks. In the experimental group, VEGF was lower at 2 weeks and higher at 8 weeks than in the control group, TSP1 was higher at 2 weeks and lower at 8 weeks, and CD31 was lower at 4 and 8 weeks. Erythema in the experimental group was lower than that in the control group at 2 and 8 weeks.</P><P>CONCLUSION</P><P>IFN-α may be one of the agents that reduces erythema by suppressing excessive revascularization.</P>
액체질소 직접분사 냉각방식 mRNA 백신 극저온 저장용기 제작
김기환(Kihwan kim),문정민(Jeongmin Mun),김한영(Hanyoung Kim),김유빈(Yubin Kim),백정현(Jeonghyeon Baek),김석호(Seokho Kim) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.05
In particular, as the mRNA vaccine becomes a major preventive vaccine in the case of COVID-19, the transportation method is being studied to meet global demand. For example, recently developed as a COVID-19 vaccine, Pfizer vaccines should be stored in the temperature range of -70℃, and similar vaccines should also be stored a -30 ℃ or below. However, existing cold storage systems are too high cost to apply storage systems below -30 ℃ and are difficult to apply in transportation. In this study, storage of direct injection using liquid nitrogen was manufactured and maintaining temperature of demanded target. In addition, vaccine storage containers were designed with considering thermal insulation, manufactured, and performance evaluations were implemented.
Han, Kihwan,Choi, Jae Hoon,Choi, Tae Hyun,Jeon, Sea Yuong,Kim, Jun Sik,Kim, Nam Gyun,Lee, Kyung Suk,Son, Daegu,Kim, Jun Hyung,Kim, Sang-Hyon,Kang, Dawon,Park, Jungbin Lippincott Williams Wilkins, Inc. 2009 Annals of plastic surgery Vol.62 No.3
Currently, endoscopic endonasal reduction and transcaruncular reduction are frequently used as surgical treatments for medial orbital wall fractures. However, these 2 surgical techniques have not been comprehensively compared using objective criteria. Therefore, the results of these 2 techniques were compared retrospectively using 8 objective criteria in patients with medial orbital wall fracture.This study included 48 medial orbital wall fracture patients treated from June 1993 to July 2006: 29 had endoscopic endonasal reduction and 19 had transcaruncular reduction. Computed tomographic scans, double vision field testing for diplopia using Goldmann perimetry, and Hertel exophthalmometer (Richmond Products, Albuquerque, NM) were done pre- and postsurgery.The average follow-up period was 70.8 months. Among patients with pure medial orbital wall fractures, the average reduction rate was 89.2% for the endoscopic endonasal reduction group and 90.7% for the transcaruncular reduction group. One case in the endoscopic endonasal reduction group had a more than 2-mm enophthalmos after surgery. The diplopia correction rate was 1.8% in the endoscopic endonasal reduction group and 2.7% in the transcaruncular reduction group. None of the above differences was statistically significant. However, among patients with pure medial orbital wall fractures compared with the transcaruncular reduction group, the average operation time, the average hospital stay, and the average cost were significantly greater in the endoscopic endonasal reduction group.The 2 surgical methods had a similar effectiveness; however, transcaruncular reduction seemed to be more advantageous with respect to the operation time, the length of hospital stay, and cost.
가뭄 스트레스 특이적인 cis-regulatory element의 특성을 기반으로 한 신규 프로모터 구축
김기환 ( Kihwan Kim ),김병규 ( Byeonggyu Kim ),신주형 ( Juhyung Shin ),김원찬 ( Won-chan Kim ) 한국응용생명화학회(구 한국농화학회) 2021 Journal of Applied Biological Chemistry (J. Appl. Vol.64 No.1
가뭄은 작물의 성장과 생산성을 방해하는 비 생물학적 스트레스 중 하나다. 비 생물학적 스트레스에 대응하기 위해서는 식물이 불리한 환경 조건에서 스트레스에 나타내는 분자 조절 네트워크를 이해해야 한다. 비 생물학적 스트레스 (가뭄에 대응)에 대처할 수 있는 조합을 선별하기 위한 실험에서 스트레스 조건에서만 발현되는 5개의 가뭄 스트레스 유도성 프로모터를 선별하였으며, 이 중 36개의 cis-regulatory element를 선별하였다. 그 결과 가뭄 스트레스에서만 발현되는 유전자의 프로모터에서 cis-regulatory element를 새롭게 조합하여 미세 제어 조절을 할 수 있는 2 개의 합성프로모터(BL1, BL2)를 제작하였다. 합성프로모터를 포함한 형질전환식물(BL1-GUS, BL2-GUS)의 분석은 합성프로모터가 건조 조건에서 형질전환식물 내의 GUS유전자의 발현을 증가시키는 것을 통하여 확인하였다. 또한 Transient activation assay를 통해 DREB1A와 DREB2C에 의해 합성프로모터가 활성화되는 것도 확인하였다. 이러한 결과는 가뭄 특이적인 cis-regulatory element의 조합에 의해 제작한 합성프로모터가 다양한 비 생물학적 스트레스에 반응하고, 식물의 성장 지연을 유발하지 않고 스트레스에 효과적으로 대응할 수 있을 것이라 예상할 수 있다. Droughts are one of the abiotic stresses that hinders the growth and productivity of crop plants. Coping with abiotic stress is necessary to understand the molecular regulatory networks that makes plants respond to adverse environmental conditions. In our experiment to find a combination that can cope with abiotic stress (respond to drought), we screened 5 stressinducible promoters that are expressed only under stress conditions. This founded 36 cis-elements in stress-inducible promoters. With the result we designed 2 synthetic promoters (BL1, BL2) for fine-controlled regulation by assembling ciselements from the native promoters, which are expressed only under stress caused by droughts. Analysis of the transgenic plant (BL1-GUS, BL2-GUS) showed that the synthetic promoters increased the expression of β-glucuronidase (GUS) in transgenic plants under desiccation. Also in the transient activation assay demonstrated that synthetic promoters induced the cotransformation of effector DREB1A and DREB2C. These results expect that the synthetic promoter with a combination of droughtspecific elements can be used to respond to various abiotic stress and is resistant to stress without causing growth retardation.