• 한국작물학회지
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• 제48권3호
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• pp.232-237
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• 2003

콩나물 세근 발생을 억제하기 위하여 주로 BA가 이용되고 있다. 본 연구는 종자의 수분 흡수형태를 기초로 BA 처리시기가 콩나물의 발아와 생장에 미치는 영향을 구명하여 BA의 처리량을 경감할 수 있는 방법을 강구하고자 실시하였다. 건조 원료콩을 BA 4 ppm 용액에 침종 첫 5.5시간, 두 번째 5.5시간, 이를 합한 11시간 침종시켜 6일간 콩나물로 재배한 후 조사한 결과를 요약하면 다음과 같다. 1. 종자의 수분흡수는 침종 후 5.5시간까지 급격히 일어났으며 그 이후에는 현저히 둔화되는 형태를 보였다. 2. 하배축 길이가 4cm 이상의 콩나물 비율은 첫 5.5시간 또는 총 11시간 침종한 것에 비하여 두 번째 5.5시간 동안 BA를 처리할 경우 증가되었다. 3. BA처리시기 및 장단에 관계없이 세근은 발생되지 않았다. 그러나 하배축과 뿌리 길이는 첫 5.5시간 또는 두 번째 5.5시간 BA를 처리한 것에 비하여 이를 합한 총 11시간 BA를 처리할 경우 짧아졌던 반면, 하배축과 hook 직경은 굵어지는 것으로 나타났다. 4. 자엽의 생체중을 제외한 여타 생체중과 건물중은 첫 5.5시간, 두 번째 5.5시간, 이를 합한 총 11시간의 BA 처리간에 차이가 없었다. 5. BA 처리시기가 콩나물의 발아와 생장에 영향을 미치는 것보다는 BA처리비용에 커다란 차이를 보이는 것으로 분석되어 BA는 흡수가 완만한 두 번째 5.5시간에 처리하는 것이 가장 효과적이었다.

• 한국세라믹학회지
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• 제26권6호
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• pp.737-746
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• 1989

After Ba-ferrite powders synthesized hydrothermally and its heated powders were dissolved partially with HCl treatment time, the BaO/Fe2O3 mole ratio of dissolved solutions and powders were measured by AAS, also, lattice constants, particle morphology and magnetic properties in HCl treated, heated and no-heated Ba-ferrite powders were abtained by means of XRD, SEM and VSM, respectively. From above analysis results, the effect of Ba/Fe mole ration in suspension(as starting material) on the BaO/Fe2O3 composition and particle characteristics of products were investigated, and the effect of heat treatment on magnetic properties of products examined. The composition, lattice constant and crystal phase of products depend on the Ba/Fe mole ratio in suspension. Ba content in surface or outer part of Ba-ferrite powder is higher than inner and heterogeneous, and the excess Ba ions in the inner part of particle move into the outer by heating, so that the mole ratio of BaO/Fe2O3 in the more jinner approaches more to the stoichiometric composition 1 : 6. The crystallinity, coercivity and saturation magnetization of products are increased by heat treatment, and the heat-treated samples synthesized hydrothermally in lower temperature are appreciated to have better powder characteristics.

• 아시안잔디학회지
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• 제9권3호
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• pp.213-223
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• 1995

The study is aimed to understand effects of ethephon(lmg/1), ABA(0.lrng/l), BA(0.lmg/l). and NAA (0.lmg /1) soaking treatment on the seed germination of perennial ryegrass 'Dandy', creeping bentgrass 'Penlinks', tall fescue 'Arid' and kentucky bluegrass 'Nasaw'. These experiments are carried in vitro and their results are summarized as the followings ; In case of ethephon (lmg /1) soaking treatment of seed, the early germination of tall fescue 'Arid' and perennial ryegrass 'Dandy' was good without the soaking times. creeping bentgrass 'Penlinks' and kentucky bluegrass 'Nasaw' obtained the best results at 12 hr. soking treatment, and the longer the soaking time, the higher the germination percentage. The early germination percentage of tall fescue 'Arid' and perennial ryegrass 'Dandy' increased more highly at ABA(0. tmg /1) soaking treatment than at the control. The germination percent-age of creeping loentgrass 'Penlink' and kentucky bluegrass 'Nasaw' had respectively the best results at 6hr. and l2hr. soaking treatment. The early germination percentage of tall fescue 'Arid' and kentucky bluegrass 'Nasaw'increased more highly at BA (0.lmg /1) soaking treatment than at the control, and especially had the best results in 6hr. soaking treatment. perennial ryegrass 'Dandy' had the best results at l0min. soaking treatment, and the longer the soaking time, the lesser the germination percentage. The early germination of perennial ryegrass 'Dandy'. creeping bentgrass 'Penlinks' and tall fes- cue 'Arid' increased more highly at NAA (0.lmg /1) soaking treatment than at the control, and especially had the best results at l2hr. soaking treatment. However, the germination of Kentucky bluegrass 'Nasaw' seeds inhibited at NAA (0.lmg /1) soaking treatment. Key words: Ethephon, ABA, BA, NAA, Soaking treatment, Seed germination.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2001년도 하계학술대회 논문집
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• pp.624-627
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• 2001

Two kinds of Nd$_{1+x}$Ba$_{2-x}$Cu$_3$O$_{7-{\delta}}$, the sintering samples and zone melting samples, were heat treated under pure Ar at 95$0^{\circ}C$. The substitution of Nd ion for Ba ion in the Nd$_{1+x}$Ba$_{2-x}$Cu$_3$O$_{7-{\delta}}$ before and after the heat treatment were investigated by XRD. In order to know the effects of the heat treatment, the T$_{c}$ and J$_{c}$ of samples with the heat treatment and those without the heat treatment by Ar were comparatively studied. The results show that the substitution of Nd for Ba decreased, T$_{c}$, and J$_{c}$ increased after the treatment under Ar at 95$0^{\circ}C$. The Nd$_{1+x}$Ba$_{2-x}$Cu$_3$O$_{7-{\delta}}$ samples were oxygenated under pure oxygen at 30$0^{\circ}C$. From the XRD pattern it was found that the sample with x< 0.4 could transfer from tetragonal phase to orthorhombic phase after the oxygenation, but the sample with x>0.4 could not make the phase transition even after a long time oxygenation.ion even after a long time oxygenation.ation.n.ation.ation.

• 대한한방소아과학회지
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• 제37권2호
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• pp.1-11
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• 2023

Objectives We aimed to compare the bone age (BA) estimation by a deep learning-based program and by a specialist in pediatrics of Korean medicine using the Tanner-Whitehouse 3 (TW3) technique for the cases of children who visited a Korean medicine hospital for growth, and to report the effect of Korean medicine treatment. Methods For three children who visited the Korean medicine hospital for growth, BA estimation by the deep learning program and by the specialist in pediatrics of Korean medicine using the TW3 technique was compared, and the time required for estimation was investigated. The change of height, BA, and predicted adult height (PAH) using deep learning program after Korean medicine treatment was observed. Results BA estimation of the left hand bone X-ray by the specialist using the TW3 technique showed a difference of -0.03 to +0.15 years from the estimation by the deep learning program. The mean estimation time was 5 minutes and 49 seconds per one for the specialist and 48 seconds for the deep learning program. During the treatment period, the height percentile and PAH estimated by deep learning program were increased after Korean medicine treatment compared to baseline while acceleration of BA was suppressed compared to chronological age. Conclusions BA estimation using the deep learning program and the TW3 technique showed a difference of less than 0.15 years, and in three cases of patients with growth as the chief complaint, Korean medicine treatment increased height percentile and PAH without accelerating BA maturation.

• 한국세라믹학회지
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• 제39권1호
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• pp.21-25
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• 2002

Effect of abnormal grain growth and heat treatment time on the electrical properties of donor-doped semiconductive BaTiO$_3$ceramics was examined. La-doped BaTiO$_3$ceramics was sintered at 134$0^{\circ}C$ for different times from 10 to 600 min in order to change the volume fraction of the abnormal grains in samples. As a result, samples with different volume fraction of abnormal grain growth from 22 to 100% were prepared. The samples were annealed at 120$0^{\circ}C$ for various times. The resistivity of the sam-ples at room and above Curie temperature was examined. The complex impedance measurement as functions of the volume fraction of abnormal grains and annealing time was conducted. Separation of complex impedance semicircle was observed in a sample in which abnormal and fine grains coexist. The results are discussed from a viewpoint of microstructure-property relationship.

• 원예과학기술지
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• 제16권4호
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• pp.531-532
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• 1998

본 연구는 철골소심(鐵骨素心)의 개화율 향상을 목적으로 BA 처리농도 및 적정시기를 구명하고자 실시하였다. BA 처리농도가 높을수록 개화율이 높아졌으며 $400mg{\cdot}L^{-1}$ 처리시 100% 개화하였으나 상대적으로 기형화 발생율이 높아 개화율을 높이기 위한 BA의 적정농도는 $300mg{\cdot}L^{-1}$으로 생각되었다. BA 처리시기에 따른 개화반응은 6월 부터 8월까지 처리한 것은 개화하였으나 4월, 5월, 9월 처리에서는 개화가 되지 않았다. 따라서 철골소심(鐵骨素心)의 개화에 적합한 BA 처리 농도는 $300mg{\cdot}L^{-1}$이었으며 처리적기는 8월말이 가장 많은 개화수와 꽃대를 생산하였다.

• 화훼연구
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• 제16권2호
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• pp.143-148
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• 2008

옥잠화속 식물 중 잎의 무늬가 다양하고 절엽 수명도 길어 절엽용 품종으로 적합한 'Ellerbroek', 'Francee', 'Halcyon'의 3품종을 대상으로 번식 효율을 높이기 위한 생장조절제인 BA 및 물리적 처리방법간의 액아발생 촉진 효과를 구명하고자 수행하였다. BA의 처리시기 및 농도별 액아 발생정도는 무처리에 비해 월등한 효과가 입증되지 않았다. 물리적 처리방법별 액아 발생 정도는 지상부 절단방법보다는 기부 상처가 더 효과적이었다. 'Ellerbroek'에서는 처리 방법 간에 액아 발생 증가 효과가 그다지 크지 않았으나 'Halcyon'에서는 무처리에 비해 기부 상처가 주당 4개의 액아수가 증가되었다. 또한 'Francee'에서는 액아 발생수가 BA처리나 지상부 절단 방법이 각각 주당 2개와 1.8개인데 반해 기부 상처시 주당 6.1개로 액아 발생 촉진 효과가 가장 뛰어났다.

• 한국응용과학기술학회지
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• 제20권4호
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• pp.346-352
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• 2003

BaTiO$_3$, powders were prepared by sol-gel process from different aging time and reaction temperature. Particle shape, size and crystal structure of prepared $BaTiO_3$ powders were analyzed by SEM, XRD and FT-IR. Effect of aging time alternation didn't particularly show up. Spherical nano-sized $BaTiO_3$ powders were obtained from condition more than reaction temperature $55^{\circ}C$, and obtained sintered $BaTiO_3$ powders of tetragonal phase from heat-treatment at $1,100^{\circ}C$.

• Journal of Plant Biology
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• 제29권4호
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• pp.255-262
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• 1986

Developmental changes of chlorophyll-protein (CP)-complex and plastid membrane proteins during the greening of rape (Brassica napus L.) cotyledons were examined in order to investigate the effect of benzymladenine (BA) on plastid development. The formation of CP-complexes was slightly promoted by BA treatment in early greening stage, at 24 h and 48 h after illumination. However, BA inhibited the development of CP-complexes at 72 h after illumination. On the profiles of plastid membrane proteins with greening time, it was found that the 24 kd protein was increased and the 56 kd protein was decreased in both water control and BA-treated cotyledons. However, the above two traits were retarded under BA treatment, respectively. From the obtained result, plastid development of rape cotyledon during greening was partially affected by interaction between light and BA dependent on its physiological age.