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141.
Ji-Myung Choi Huong Thu Vu Seong-Jin Shin Jun-Yong Ahn You-Jin Kim Sol Song Mi-Ran Han Jun-Haeng Lee Jong-Soo Kim Jonathan C. Knowles Hae-Hyoung Lee Ji-Sun Shin Jong-Bin Kim Jung-Hwan Lee 《Molecules (Basel, Switzerland)》2022,27(9)
Therapeutic iodoform (CHI3) is commonly used as a root-filling material for primary teeth; however, the side effects of iodoform-containing materials, including early root resorption, have been reported. To overcome this problem, a water-soluble iodide (NaI)-incorporated root-filling material was developed. Calcium hydroxide, silicone oil, and NaI were incorporated in different weight proportions (30:30:X), and the resulting material was denoted DX (D5~D30), indicating the NaI content. As a control, iodoform instead of NaI was incorporated at a ratio of 30:30:30, and the material was denoted I30. The physicochemical (flow, film thickness, radiopacity, viscosity, water absorption, solubility, and ion releases) and biological (cytotoxicity, TRAP, ARS, and analysis of osteoclastic markers) properties were determined. The amount of iodine, sodium, and calcium ion releases and the pH were higher in D30 than I30, and the highest level of unknown extracted molecules was detected in I30. In the cell viability test, all groups except 100% D30 showed no cytotoxicity. In the 50% nontoxic extract, D30 showed decreased osteoclast formation compared with I30. In summary, NaI-incorporated materials showed adequate physicochemical properties and low osteoclast formation compared to their iodoform-counterpart. Thus, NaI-incorporated materials may be used as a substitute for iodoform-counterparts in root-filling materials after further (pre)clinical investigation. 相似文献
142.
Vu H.H. Nguyen Son H. Doan Tram T. Van Phuc H. Pham Tran T.N. Nguyen Ngoc N. Nguyen Thach N. Tu Nam T.S. Phan 《应用有机金属化学》2019,33(4)
Iron‐based metal–organic framework VNU‐20 was utilized as a heterogeneous catalyst for cascade reactions between ketoximes and dibenzyl ether to produce 2,4,6‐triphenylpyridines. Additionally, benzyl alcohol and (dimethoxymethyl)benzene could be used as an alternative starting materials for the transformation. The oxidant exhibited a remarkable impact on the reactions, and di‐tert‐butylperoxide was the most appropriate candidate. The VNU‐20 displayed higher efficiency than many homogeneous and heterogeneous catalysts. The catalyst was reusable for the cascade reactions without a noticeable deterioration in catalytic activity. This transformation is new, and would offer alternative routes to triphenylpyridines utilizing ketoximes as building blocks. 相似文献
143.
The hydrolysis of dihydropyranyl acetals by sulfurie acid leads to cyelenones, but by the use of pyridinium ptoluenesulfonate, δ-ketoaldehydes may be isolated. Those compounds do not undergo aldol condensation under these conditions. 相似文献
144.
145.
We report a flexible all-optical gain controlled bidirectional optical amplifier. The device achieves constant gain and low noise figure over a large input power range. Moreover, the device removes Rayleigh backscattered light and amplifier noise. 相似文献
146.
Vu Xuan Minh Zhidkov E. P. Kadyshevskii V. G. 《Theoretical and Mathematical Physics》1986,67(1):418-423
Theoretical and Mathematical Physics - 相似文献
147.
The push-rod dilatometric investigations of polycrystalline copper selenide between room temperature and 460 K have been performed. The results obtained for the low-temperature phase are in qualitative disagreement with previous X-ray dilatometric results. Using our own structural data we have succeeded to explain this discrepancy in terms of the anisotropy of the low-temperature phase. 相似文献
148.
Michele Conforti Grard Cornujols Kristina Vu
kovi 《Journal of Combinatorial Theory, Series B》2004,90(2):257-307
We prove that square-free perfect graphs are bipartite graphs or line graphs of bipartite graphs or have a 2-join or a star cutset. 相似文献
149.
150.
Van H. Vu 《Graphs and Combinatorics》1997,13(2):197-208
In this paper we determine the maximum cardinality m of a family A= {A 1,..., A m} of subsets of a set of n elements with the property that for each A i there are at most s A j such that |A i ∩ A j | is odd (even). A tight upper bound is given in the case s < c(2 n,2/n). In the remaining cases we give an asymptotically tight upper bound. As an application we give a tight upper-bound for the cardinality of a family with even multi-intersection. Both results generalize a result of Berlekamp and Graver. 相似文献