독일발트문학과 발트국 특집> : 도네라이티스의 소외 계층인 리투아니아인의 고난 받은 생활에서 영감을 받은 경건하면서도 매혹적인 ..사계절..연구

라이마유크네비츄테 ( Laima Juknevi?i?t? ) 한국독일어문학회 2014 독일어문학 Vol.65 No.-

오늘날 도네라이티스는 리투아니아의 문학 전통의 가장 중요한 대표자 중 한 사 람이 될 것으로 간주된다. 도네라이티스의 가장 유명한 ..사계절..이라는 걸작이 그 의 죽음 이후에 출판되었다. ..사계절..은 18 세기의 사회 문화적으로 소외된 동쪽 프 러시아에서 살고 있었던 사람들의 무자비한 일상생활에 대해 설명한다. 도네라이티 스는 매우 독실한 루터교 성직자로서 좋은 평판을 가지고 있었기 때문에 미래의 비 평가들은 과거 시대의 신뢰성이 높은 계정으로 그의 작품을 고려했다. 흥미로운 점 은 ..사계절..에서는 도네라이티스의 자연의 묘사가 일반 기독교 캐논보다 이교도의 세계관에 더 밀접하게 상관관계가 있다는 것이다. 도네라이티스는 리투아니아 마이 너의 경계 내에서 지배적인 농노시스템에 대해서 복잡한 태도를 가지고 있었다. 한 편으로는, 도네라이티스는 자신의 작품의 몇몇 부분에서 모든 사람이 출생 시와 동 일하다고 하면서도 한편으로는 농노 시스템 자체를 비난하지는 않았다.

Numerical study on Reynolds number effects on the aerodynamic characteristics of a twin-box girder

Shujin Laima,Buchen Wu,Chao Jiang,Wenli Chen,Hui Li 한국풍공학회 2019 Wind and Structures, An International Journal (WAS Vol.28 No.5

For super long-span bridges, the aerodynamic forces induced by the flow passing the box girder should be considered carefully. And the Reynolds number sensitively of aerodynamic characteristics is one of considerable issue. In the study, a numerical study on the Reynolds number sensitivity of aerodynamic characteristic (flow pattern, pressure distribution and aerodynamic forces) of a twin-box girder were carried out using large eddy simulation (LES) with the dynamic Smagorinsky–Lilly subgrid model. The results show that the aerodynamic characteristics have strong correlation with the Reynolds number. At the leading edge, the flow experiences attachment, departure, and reattachment stages accompanying by the laminar transition into turbulence, causing pressure plateaus to form on the surface, and the pressure plateaus gradually shrinks. Around the gap, attributing that the flow experiences stages of laminar cavity flow, the wake with alternate shedding vortices, and turbulent cavity flow in sequence with an increase in the Reynolds number, the pressures around the gap vary greatly with the Reynold number. At the trailing edge, the pressure gradually recovers as the flow transits to turbulence (the flow undergoes wake instability, shear layer transition-reattachment station), In addition, at relative high Reynolds numbers, the drag force almost does not change, however, the lift force coefficient gradually decreases with an increase in Reynolds number.

Correlation analysis of the wind of a cable-stayed bridge based on field monitoring

Li, Hui,Laima, Shujin,Li, Na,Ou, Jinping,Duan, Zhondong Techno-Press 2010 Wind and Structures, An International Journal (WAS Vol.13 No.6

This paper investigates the correlation of wind characteristics monitored on a cable-stayed bridge. Total five anemoscopes are implemented into the bridge. Two out of 5 anemoscopes in inflow and two out of 5 anemoscopes in wake-flow along the longitudinal direction of the bridge are installed. Four anemoscopes are respectively distributed at two cross-sections. Another anemoscope is installed at the top of the tower. The correlation of mean wind speed and direction, power spectral density, the turbulent intensity and integral length of wind in flow at two cross-sections are investigated. In addition, considering the non-stationary characteristics of wind, the spatial correlation in time-frequency is analyzed using wavelet transform and different phenomenon from those obtained through FFT is observed. The time-frequency analysis further indicates that intermittence, coherence structures and self-similar structures are distinctly observed from fluctuant wind. The flow characteristics around the bridge deck at two positions are also investigated using the field measurement. The results indicate that the mean wind speed decrease when the flow passing through the deck, but the turbulence intensity become much larger and the turbulence integral lengths become much smaller compared with those of inflow. The relationship of RMS (root mean square) of wake-flow and the mean wind speed of inflow is approximately linear. The special structures of wake-flow in time-frequency domain are also analyzed using wavelet transform, which aids to reveal the forming process of wake-flow.

Anti-inflammatory Activity of Some Potassium Salts of N,N-Disubstituted 4-Aminoazobenzenesulfonic Acids in Rat Adjuvant Arthritis

Maryte Kazemekaite,Laima Leonaviciene,Ruta Bradunaite,Zita Staniulyte,Algirdas Palaima,Valdemaras Razumas 대한약학회 2008 Archives of Pharmacal Research Vol.31 No.6

Anti-inflammatory effects of three potassium salts of N,N-disubstituted 4-aminoazobenzenesulfonic acids were investigated and compared to that of acetylsalicylic acid (ASA) in rats with adjuvant arthritis (AA). Prophylactic oral administration of all compounds in a dose of 150 mg/ kg ameliorated AA symptoms in animals. The most pronounced anti-inflammatory activity at the end of the experiment showed compound 1 containing imino group: it significantly suppressed joint swelling by 48.2% in female and by 44.2% in male rats with AA. The development of polyarthritis after the treatment with this compound was the lowest in female (20%) and male (40%) rats (in control – 100% of animals with polyarthritis). All derivatives, and especially compound 1, also improved the systemic parameters of disease such as blood indices and internal organs’ weight, and showed no toxicity on the main organs such as liver and spleen.

Correlation analysis of the wind of a cable-stayed bridge based on field monitoring

Hui Li,Shujin Laima,Na Li,Jinping Ou,Zhondong Duan 한국풍공학회 2010 Wind and Structures, An International Journal (WAS Vol.13 No.6

This paper investigates the correlation of wind characteristics monitored on a cable-stayed bridge. Total five anemoscopes are implemented into the bridge. Two out of 5 anemoscopes in inflow and two out of 5 anemoscopes in wake-flow along the longitudinal direction of the bridge are installed. Four anemoscopes are respectively distributed at two cross-sections. Another anemoscope is installed at the top of the tower. The correlation of mean wind speed and direction, power spectral density, the turbulent intensity and integral length of wind in flow at two cross-sections are investigated. In addition, considering the non-stationary characteristics of wind, the spatial correlation in time-frequency is analyzed using wavelet transform and different phenomenon from those obtained through FFT is observed. The time-frequency analysis further indicates that intermittence, coherence structures and self-similar structures are distinctly observed from fluctuant wind. The flow characteristics around the bridge deck at two positions are also investigated using the field measurement. The results indicate that the mean wind speed decrease when the flow passing through the deck, but the turbulence intensity become much larger and the turbulence integral lengths become much smaller compared with those of inflow. The relationship of RMS (root mean square) of wake-flow and the mean wind speed of inflow is approximately linear. The special structures of wake-flow in time-frequency domain are also analyzed using wavelet transform, which aids to reveal the forming process of wake-flow.

Spatial correlation-based WRF observation-nudging approach in simulating regional wind field

Hehe Ren,Shujin Laima,Wen-Li Chen,Anxin Guo,Hui Li 한국풍공학회 2019 Wind and Structures, An International Journal (WAS Vol.28 No.2

Accurately simulating the wind field of large-scale region, for instant urban areas, the locations of large span bridges, wind farms and so on, is very difficult, due to the complicated terrains or land surfaces. Currently, the regional wind field can be simulated through the combination of observation data and numerical model using observation-nudging in the Weather Research and Forecasting model (WRF). However, the main drawback of original observation-nudging method in WRF is the effects of observation on the surrounding field is fully mathematical express in terms of temporal and spatial, and it ignores the effects of terrain, wind direction and atmospheric circulation, while these are physically unreasonable for the turbulence. For these reasons, a spatial correlation-based observation-nudging method, which can take account the influence of complicated terrain, is proposed in the paper. The validation and comparation results show that proposed method can obtain more reasonable and accurate result than original observation-nudging method. Finally, the discussion of wind field along bridge span obtained from the simulation with spatial correlation-based observation-nudging method was carried out.

Anti-inflammatory Activity of Some Potassium Salts of N,N-Disubstituted 4-Aminoazobenzenesulfonic Acids in Rat Adjuvant Arthritis

Kazemekaite, Maryte,Leonaviciene, Laima,Bradunaite, Ruta,Staniulyte, Zita,Palaima, Algirdas,Razumas, Valdemaras 대한약학회 2008 Archives of Pharmacal Research Vol.31 No.6

Anti-inflammatory effects of three potassium salts of N,N-disubstituted 4-aminoazobenzene-sulfonic acids were investigated and compared to that of acetylsalicylic acid (ASA) in rats with adjuvant arthritis (AA). Prophylactic oral administration of all compounds in a dose of 150mg/kg ameliorated AA symptoms in animals. The most pronounced anti-inflammatory activity at the end of the experiment showed compound 1 containing imino group: it significantly suppressed joint swelling by 48.2% in female and by 44.2% in male rats with AA. The development of polyarthritis after the treatment with this compound was the lowest in female (20%) and male (40%) rats (in control - 100% of animals with polyarthritis). All derivatives, and especially compound 1, also improved the systemic parameters of disease such as blood indices and internal organs' weight, and showed no toxicity on the main organs such as liver and spleen.

油菜小胞子 發育時期가 胚狀體發生에 미치는 影響

Jin Ki Bang(方鎭淇),Jung Il Lee(李正日),Laima S. Kott 한국육종학회 1991 한국육종학회지 Vol.23 No.4

To obtain the basic information for rapeseed breeding, embryogenesis by microspore-developmental stages and the relationship between anther length and microspore-developmental stages were investigated. The embryogenesis by bud sizes were most efficient from 3.5 to 4.5mm for Topas and from 2.8 to 3.3 mm for MSB 69-11, and the anther lengths were from 2.0 to 2.9mm. The best response for the tested varieties was from buds with a petal/anther ratio of 2/3 and 3/4. The late uninucleate stage has been identified as optimal for embryo production in B. napus. At the late uninucleate stage the exine was rigid, dark yellow in color and the nucleus was displaced to the periphery of the cell.

Fabrication of diamond/W – Cu functionally graded material by microwave sintering

Chenlong Wei,Jigui Cheng,Mei Zhang,Rui Zhou,Bangzheng Wei,Xinxi Yu,Laima Luo,Pengqi Chen 한국원자력학회 2022 Nuclear Engineering and Technology Vol.54 No.3

A four-layered W/Cu functionally graded material (FGM) (W90% þ Cu10%/W80% þ Cu20%/W70% þ Cu30%/W60% þ Cu40%, wt.% fraction) and a four-layered diamond/WeCu FGM (W90% þ Cu10%/W80% þ Cu20%/W70% þ Cu30%/W55% þ Cu40% þ diamond5%, wt.% fraction) were fabricated by microwavesintering. The thermal conductivity and thermal shock resistance of diamond/WeCu FGM andWeCu FGM were investigated. The morphologies of the diamond particles and different FGMs wereanalyzed using AFM, SEM, EDS, and TEM. The results show that a 200 nm rough tungsten coating wasformed on the surface of the diamond. The density of the tungsten-coated diamond/WeCu FGM, obtainedby microwave sintering at 1200 C for 30 min, was 94.66%. The thermal conductivity of the fourlayereddiamond/WeCu FGM was 220 W$m-1$K-1, which is higher than that of the four-layered W/CuFGM (209 Wm 1 K 1). This indicates that adding an appropriate amount of tungsten-coated diamond tothe high Cu layer W/Cu FGM improves the thermal conductivity of the composite. The diamond/WeCuFGM sintered at 1200 C for 10 min exhibited better thermal shock resistance than diamond/WeCu FGMsintered at 1100 C for 10 min

油菜의 小胞子培養에 의한 胚狀體發生과 植物體分化

Jin Ki Bang(方鎭淇),Jung Il Lee(李正日),Laima S. Kott 한국육종학회 1991 한국육종학회지 Vol.23 No.3

Fifteen genotypes of rapeseed were used in the study of embryogenesis and temeprature treatment to the embryo induced from microspore culture. Embryo yields, frequency of normal embryo production and plant regeneration rate were greatly different between genotypes and between plants within a genotype. Embryo yield ranged from 6 to 302 embryos per bud, normal embryos ranged from 7 to 84.1% of total embryos produced, and plant regeneration from embryos showed from 0 to 35.4%, of embryos subcultured. Plant regeneration from embryo age of 28 days was most efficient by cold temperature treatment at 4℃ and exposure times for 9 days.