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排序方式: 共有132条查询结果,搜索用时 31 毫秒
1.
Lisboa Thalles Pedrosa de Faria Lucas Vincius Alves Guilherme Figueira Matos Maria Auxiliadora Costa Matos Renato Camargo 《Journal of Solid State Electrochemistry》2021,25(8):2301-2308
Journal of Solid State Electrochemistry - This work describes a simple, rapid, and cost-effective method for fabrication of paper-based carbon electrode (US$ <0.01) using conductive ink... 相似文献
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Sodiun borohydride reacts with oxazolidinium methiodides derived from ephedrine and pseudoephedrine, in ethereal solvents, cleaving regioselectively the C-N bond of the ring and leading, in good yields, to chiral amine-borane adducts of know absolute configuration. The 1HNMR data allow to predict the most stable conformation. 相似文献
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de Farias Davi Marques de Faria Lucas Vinícius Lisboa Thalles Pedrosa Matos Maria Auxiliadora Costa Muñoz Rodrigo Alejandro Abarza Matos Renato Camargo 《Journal of Solid State Electrochemistry》2020,24(5):1165-1173
Journal of Solid State Electrochemistry - In this paper, we compare reduced graphene oxide (RGO) electrode with multi-walled carbon nanotubes (MWCNT) as modifiers for the sensitive detection of... 相似文献
6.
Leandro F. Pedrosa William P. de Macedo Antonia C. R. Furtado Guilherme P. Guedes Luiz C. S. Pinheiro Jackson A. L. C. Resende 《合成通讯》2013,43(24):3373-3386
New thieno[2,3-b]pyridine phosphoramidates compounds were synthesized and characterized by infrared; 1H, 13C, and 31P NMR spectroscopy; and high-resolution mass spectrometry. The products were obtained in good yields (64–82%) under mild conditions by nucleophilic aromatic substitution reaction of aminoalkylphosphoramidates over 4-chlorothieno[2,3-b]pyridine-5-carbonitrile. The crystal structures of two compounds were solved by x-ray diffraction and showed a network of intermolecular interactions involving phosphoramidate groups. Druglike properties and toxicity of the new compounds were studied with the help of the software Molinspiration, Osiris, and Toxtree, and were compared with the standard drugs amphotericin B, miltefosine, benznidazole, and nifurtimox. [Supplementary materials are available for this article. Go to the publisher's online edition of Synthetic Communications® for the following free supplemental resource(s): Full experimental and spectral details.] 相似文献
7.
The boson-fermion mapping problem is investigated for the case when pure collective quadrupole and two-quasiparticle modes are considered. Approximate expressions of the boson images of the fermion operators are derived.Dedicated to the memory of M. Gmitro. 相似文献
8.
A. V. Melnikov L. G. Eliseev S. A. Grashin A. V. Gudozhnik S. E. Lysenko V. A. Mavrin S. V. Perfilov V. A. Vershkov L. I. Krupnik A. A. Chmyga A. D. Komarov A. S. Kozachok C. Hidalgo A. Alonso J. L. dePablos M. A. Pedrosa 《Czechoslovak Journal of Physics》2005,55(12):1569-1578
Comparison of the plasma electric potential evolution in the T-10 tokamak and TJ-II stellarator was performed. The core potential
was measured by the heavy-ion beam probing and the edge potential was measured by Langmuir probe. The intrinsic potentials
in both devices are different in sign, positive in TJ-II low-density discharge and negative in T-10 higher-density discharges,
but during ECRH they evolve similarly: the potential becomes more positive, and increase of ECRH power leads to stronger rise
of core potential.
Presented at the Workshop “Electric Fields, Structures and Relaxation in Edge Plasmas”, Tarragona, Spain, July 3–4, 2005. 相似文献
9.
Bruno P. Crulhas Naira P. Ramos Gustavo R Castro Valber A. Pedrosa 《Journal of Solid State Electrochemistry》2016,20(9):2427-2433
In this work, highly sensitive and selective hydrogel microstructures to detect hydrogen peroxide releasing from cancer cell based on electrochemical biosensors are proposed. Gold nanoparticles (AuNPs) were conjugated with horseradish peroxidase and were dispersed in the prepolymer solution of poly(ethylene glycol) diacrylate. The prepolymer solution was photolithographically patterned in alignment with an array of Au microelectrodes fabricated on glass. Performance of this biosensor was characterized by transmission electron microscopy, electrochemical impedance spectroscopy, and cyclic voltammetry. Under the optimal condition, the proposed biosensor can detect hydrogen peroxide (H2O2) in a wide linear range from 2 to 100 μM with a low detection limit of 0.01 μM. It can be also directly used to mark out extracellular H2O2 released from prostate cells. Furthermore, the reproducibility, stability, and selectivity of the biosensor are analogous with the previous report, so this methodology can be used in physiological and pathological detection of H2O2 in the future. 相似文献
10.
Four novel benzamido-functionalized prolinamides have been prepared and tested as organocatalysts for enantioselective aldol reaction of aldehydes and cyclic ketones in water. In particular, prolinamide derived from achiral ethylene diamine was the best catalyst leading to anti aldols in excellent diastereomeric (up to 98/2) and enantiomeric (up to 99/1) ratios, thereby showing that lateral amide functionalities might be a key issue for facilitating "in water" chemistry. These catalysts are cheaper and easier to prepare than those previously described. 相似文献