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Plant Regeneration and Bulblet Formation of Allium wakegi Araki
Song,Won-seob,Yang,Deok-Chun,Yoon,Jae-Ho,Ryu,Sang-Hyun 한국자원식물학회 2004 Plant Resources Vol.7 No.1
Allium wakegi was cultured shoot tip in the condition of light culture. The Allium wakegi added plant growth regulator was observed of plant regeneration and bulblet formation. Callus Induction and growing rate was the best of 78% when added alone 2,4-D 0.5mg/L. In the formation of shoot, its regeneration rate was 96% when added BA 0.5mg/L in the light culture condition. When BA 0.5mg/L and NAA 0.5mg/L mixed and BA 0.5 mg/L and NAA 1.0mg/L mixed, the rates were 99% and 97% respectively, and these conditions were suitable for forming shoot. In the formation of roots, when added NAA 2.0mg/L in the light culture condition, the regeneration rate was 90.6 % and the roots were abnormal. When added NAA 1.0mg/L, the rate was 82 % and the highest. In the formation of bulbs, when BA 05mg/L and NAA 1.0mg/L mixed, the root generantion and its size in the bulbs was the best compare to other treatment experiments.
A field study of colloid transport in surface and subsurface flows
Zhang, Wei,Tang, Xiang-Yu,Xian, Qing-Song,Weisbrod, Noam,Yang, Jae E.,Wang, Hong-Lan Elsevier, etc 2016 Journal of hydrology Vol.542 No.-
<P><B>Abstract</B></P> <P>Colloids have been recognized to enhance the migration of strongly-sorbing contaminants. However, few field investigations have examined combined colloid transport via surface runoff and subsurface flows. In a headwater catchment of the upper Yangtze River, a 6m (L) by 4m (W) sloping (6°) farmland plot was built by cement walls to form no-flow side boundaries. The plot was monitored in the summer of 2014 for the release and transport of natural colloids via surface runoff and subsurface flows (i.e., the interflow from the soil-mudrock interface and fracture flow from the mudrock-sandstone interface) in response to rain events. The water sources of the subsurface flows were apportioned to individual rain events using a two end-member model (i.e., mobile pre-event soil water extracted by a suction-cup sampler <I>vs</I>. rainwater (event water)) based on <I>δ</I> <SUP>18</SUP>O measurements. For rain events with high preceding soil moisture, mobile pre-event soil water was the main contributor (generally >60%) to the fracture flow. The colloid concentration in the surface runoff was 1–2 orders of magnitude higher than that in the subsurface flows. The lowest colloid concentration was found in the subsurface interflow, which was probably the result of pore-scale colloid straining mechanisms. The rainfall intensity and its temporal variation govern the dynamics of the colloid concentrations in both surface runoff and subsurface flows. The duration of the antecedent dry period affected not only the relative contributions of the rainwater and the mobile pre-event soil water to the subsurface flows but also the peak colloid concentration, particularly in the fracture flow. The <10μm fine colloid size fraction accounted for more than 80% of the total suspended particles in the surface runoff, while the colloid size distributions of both the interflow and the fracture flow shifted towards larger diameters. These results highlight the need to avoid the application of strongly-sorbing agrochemicals (e.g., pesticides, phosphorus fertilizers) immediately before rainfall following a long no-rain period because their transport in association with colloids may occur rapidly over long distances via both surface runoff and subsurface flows with rainfall.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Subsurface flow was apportioned into rainwater and mobile pre-event soil water. </LI> <LI> The duration of no-rain period affects peak colloid concentration. </LI> <LI> Rainfall intensity and its temporal variation govern colloid discharge dynamics. </LI> </UL> </P>
Sang-Mook Kim,Hwa Sub Oh,Jong Hyeob Baek,Kwang-Ho Lee,Gun Young Jung,Jae-Ho Song,Ho-Jong Kim,Byung-Jun Ahn,Dong Yanqun,Jung-Hoon Song IEEE 2010 IEEE electron device letters Vol.31 No.8
<P>The strain and piezoelectric fields in InGaN blue light-emitting diodes on a GaN layer, which is grown on a planar sapphire substrate or patterned sapphire substrates (PSSs), such as a microsized PSS and a nanosized PSS (NPSS), are investigated by micro-Raman spectroscopy and electroreflectance (ER) spectroscopy. The obtained piezoelectric field in InGaN multiple quantum wells (QWs) grown on the planar substrate is 0.83 MV/cm, and it is 0.70 MV/cm for the case of the NPSS. These results are attributed to the fact that the GaN layers on the PSSs have a smaller residual strain compared to that on the planar sapphire, and thus, strain reduction in the GaN layer can reduce the piezoelectric field in the InGaN QWs grown on top of it.</P>
(Sang Jae Lee),(Song Shil Lee),(Kwang Ho Kim) 경희대학교 한의학연구소 2000 JOURNAL OF ORIENTAL MEDICINE Vol.5 No.1
To examine effect of omahwan(烏麻丸)-赤何首烏(Polygonum multiflorum THUNB.), 白何首烏 (Cynanchum wilfordii H.), 黑芝麻(Sesamum indicum L.)-on the aged human immune system, a series of humoral immunological parameters was compared in aged female (age 60-70 years) before
Bioinspired Parabola Subwavelength Structures for Improved Broadband Antireflection
Song, Young Min,Jang, Sung Jun,Yu, Jae Su,Lee, Yong Tak WILEY-VCH Verlag 2010 Small Vol.6 No.9
<B>Graphic Abstract</B> <P>Subwavelength structures (SWSs) with a parabola shape are fabricated by a combination of laser interference lithography of a photoresist (PR), thermal reflow, and subsequent pattern transfer. The SWSs show antireflection properties in a broader wavelength range than conventional cone-shaped SWSs, and have potential in optoelectronics for improved device performance. <img src='wiley_img_2010/16136810-2010-6-9-SMLL201000079-content.gif' alt='wiley_img_2010/16136810-2010-6-9-SMLL201000079-content'> </P>
Immediate type hypersensitivity reaction to MRI contrast media (초)
( Jae Woo Jung ),( Mi Yeong Kim ),( Sung Yoon Kang ),( Seo Young Lee ),( Min Hye Kim ),( Woo Jung Song ),( Jae Woo Kwon ),( Tae Whan Kim ),( Sae Hoon Kim ),( Hye Ryun Kang ),( Heung Woo Park ),( Whal 대한내과학회 2010 대한내과학회 추계학술대회 Vol.2010 No.-
Song, Min-Keun,Seon, Hyo-Jeong,Kim, In-Gyu,Han, Jae-Young,Choi, In-Sung,Lee, Sam-Gyu Korean Academy of Rehabilitation Medicine 2012 Annals of Rehabilitation Medicine Vol.36 No.3
<P><B>Objective</B></P><P>To investigate the effect of combined therapy of exercise and nootropic agent on cognitive function in a focal cerebral infarction rat model.</P><P><B>Method</B></P><P>Forty 10-week old male Sprague-Dawley rats were subjected to photothrombotic cerebral infarction of the left parietal lobe. All rats were randomly divided into 4 groups: group A was photothrombotic cerebral infarction rats without any treatment (n=10); group B was photothrombotic cerebral infarction rats with swimming exercise (n=10); group C was photothrombotic cerebral infarction rats with oral administration of acetyl-L-carnitine (n=10); group D was photothrombotic cerebral infarction rats with swimming exercise and oral administration of acetyl-L-carnitine (n=10). Cognitive function was evaluated using the Morris water maze test on the 1st day, and the 1st, 2nd, and 4th week after the induction of cerebral infarction. The activity of superoxide dismutase (SOD) and the level of malondialdehyde (MDA) in the hippocampus were measured. The neuronal cells of the hippocampus were histopathologically evaluated.</P><P><B>Results</B></P><P>The escape latency was shorter in groups B, C, and D than in group A. However, the differences were not statistically significant at the 1st, 2nd and 4th week. The activity of SOD was the highest in group D. The level of MDA was the lowest in group D. We observed more normal neuronal cells in groups B, C, and D.</P><P><B>Conclusion</B></P><P>The combined therapy of exercise and nootropic agent was helpful in ameliorating oxidative stress in the focal cerebral infarction rat model. However, the effect did not translate into improvement of cognitive function.</P>