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RISS 인기검색어
- 검색키워드
- 저자 : Bernard Durand (검색결과 5 건)
- 무료
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Differential Cytokinins Binding to Dioecious Plant Ribosomes
Chung, See Ryun,DURAND, Bernard 생화학분자생물학회 1986 BMB Reports Vol.12 No.4
It has been reported that the administration of auxins, gibberellins and cytokinins to plants affects nuclear transcription. Other observations suggest that cytokinins also have an effect at the translational level. Based on our knowledge of sexual differentiation of the dioecious plant Mercurialis annua, we believe that genetically male meristem is a specific target organ of cytokinins. Exogenous cytokinins provoked obvious changes of these male meristems, including the appearance of certain tRNA species and enzymes specific to female flowers. In the present study, the binding of benzylaminopurine, furfurylaminopurine, dimethylallylaminopurine and zeatin, as well as their less acaive ribosides, were compared in order to detect any relations between physiological action and binding efficiency.
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Cytokinins Binding to Dioecious Plant Ribosomes
정시련,베르나듀랑,Chung, See-Ryun,Durand, Bernard 생화학분자생물학회 1977 한국생화학회지 Vol.10 No.3
사이토 카이닌 유도체와 자웅이주 식물의 라이보좀과의 결합에 관한 연구로서 방사성화합물 6-benzylamino[8-$^{14}C$]purine을 조사수단으로 이용하여 이것과 남성 및 여성 라이보좀과의 분 결합에 관한 결과를 보고한 바 있다. 이 연구는 한걸음 더 나아가 benzylaminopurine과 furfurylaminopurine (kinetin) 및 이들 각각의 riboside가 남성 라이보좀과 결합하는 상호 관계를 밝혀보고저 하는 것이다. The binding interactions between cytokinin analogs and ribosomes of a dioecious plant are studied. Molecular interactions between cytokinins and ribosomes have been investigated and compared to male and female by using radioactively labeled 6-benzylamino [8-$^{14}C$] purine as a probe. Further results on the binding of benzylaminopurine to male ribosomes in connection with kinetin, 6-furfurylaminopurine, and their respective ribosides are reported presently.
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정시련,베르나 듀랑 ( See Ryun Chung,Bernard Durand ) 생화학분자생물학회 1977 BMB Reports Vol.10 No.3
The binding interactions between cytokinin analogs and ribosomes of a dioecious plant are studied. Molecular interactions between cytokinins and ribosomes have been investigated and compared to male and female by using radioactively labeled 6-benzylamino [8-^(14)C] purine as a probe. Further results on the binding of benzylaminopurine to male ribosomes in connection with kinetin, 6-furfurylaminopurine, and their respective ribosides are reported presently.
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The thickness of BaTiO3 tape castings as function of the slip system
Román Nava,Sophie Guillemet-Fritsch,Juan Aguilar-Garib,Edgar Reyes,Bernard Durand 한양대학교 세라믹연구소 2012 Journal of Ceramic Processing Research Vol.13 No.2
One of the most popular techniques in the fabrication of multilayer ceramic capacitor (MLCC) is tape casting, which requires the preparation of a slip that could be either solvent or water-based. A requirement of MLCC miniaturization has pushed improvement of this technique up to the point of fabricating ceramic films below 10μm. However, less information on a direct comparison of aqueous and non-aqueous slips systems using BaTiO3 for dielectric tapes below 3.5 μm is available in the literature. Therefore, solvent and water-based systems were studied in this research aimed to weight the different factors on the thickness reduction; in particular the relation between slip viscosity and ceramic tape thickness was established for both slips formulations. It was found that viscosity below 100 mPa·s is a not a general rule since there is an important influence of the solvent medium; nevertheless adhesion tape-substrate plays an important role over the thinning of water-based formulations. The slip viscosity is defined by the dispersant type of aqueous systems and the binder of non aqueous systems, while reduction of the powder size is more sensitive to the solvent medium as for polar/non –polar mixtures. Ceramic tape homogeneity is strongly affected by the presence of hard aggregation and should be accounted for with the use of nanoparticles. A condition was also demonstrated where low viscosities and thinner layers are related.
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( Beat Müllhaupt ),( Paul Kwo ),( Kosh Agarwal ),( Christophe Duvoux ),( Francois Durand ),( Marcus Peck-Radosavljevic ),( Eric M. Yoshida ),( Leslie Lilly ),( Bernard Willems ),( Hugo Vargas ),( Prin 대한간학회 2016 춘·추계 학술대회 (KASL) Vol.2016 No.1
Aims: The aim of this analysis is to evaluate outcomes in patients who underwent liver transplant after initiating treatment with ledipasvir (LDV)/sofosbuvir (SOF)+ribavirin (RBV) in the SOLAR-1 and SOLAR-2 trials. Methods: We combined data from the SOLAR-1 and SOLAR-2 studies, in which 7 groups of patients with HCV genotype (GT) 1 or 4 were randomized to receive 12 or 24 weeks of LDV/SOF+ RBV: patients without a transplant with 1) Child-Pugh-Turcotte (CPT) B or 2) CPT C cirrhosis; or transplanted patients with 3) no cirrhosis (F0 to F3), 4) CPT A, 5) CPT B or, 6) CPT C cirrhosis, or 7) fibrosing cholestatic hepatitis. Results: Seventeen patients underwent liver transplantation during the study. For all but one patient, this was the first liver transplant. Six were CPT B at screening (5 Group 1, 1 Group 5) and 11 were CPT C (Group 2). Median baseline MELD score was 17 (range 7-23), with the majority (11/17) having scores ≥15. Seven patients underwent transplant prior to completing their full course of treatment. All patients were HCV RNA <LLOQ at the time of liver transplant. All but one patient (94%, 16/17) maintained virologic response 12 weeks after transplant (pTVR12). All patients who achieved pTVR12 received at least 11 weeks of LDV/SOF+RBV. The one patient who did not achieve pTVR12 discontinued study drug on day 21 and underwent liver transplant the following day. Conclusions: Few patients with decompensated cirrhosis treated in the SOLAR studies underwent liver transplantation after initiating LDV/SOF+RBV therapy. For the 17 who did undergo transplant, 94% achieved pTVR12. The data suggest that 11 weeks of treatment prior to transplantation can prevent reinfection of the graft. Future studies are needed to assess the optimal timing and length of treatment in the peri-transplant setting.
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