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151.
Umberto Costantino Maria Antonietta Massucci Aldo La Ginestra Anna Maria Tarola Laura Zampa 《Journal of inclusion phenomena and macrocyclic chemistry》1986,4(2):147-162
The intercalation of imidazole and some organic species containing the imidazole ring, between the layers of crystalline zirconium phosphate has been investigated. Fourteen new, well-ordered intercalation compounds are obtained with the batch procedure at r.t. and/or 60°C. A mechanism of formation of the various compounds is proposed on the basis of the interaction between the guest molecules (with their dimensions and geometries) and the free PO3OH groups available between the layers of the host. The new phases have been characterized by TG and X-ray methods. 相似文献
152.
M. Larcheveque M. Vendl W. Eichenberg H. Löber H. Harkort E. Herlinger A. Ungewiß E. Delfeld R. C. Groves M. Bichowsky J. Gingold W. N. Segshda J. Kwascheninnikow K. Kumanin M. A. Besborodow C. La Rotonda und O. Arrhenius 《Fresenius' Journal of Analytical Chemistry》1935,101(3-4):125-133
Ohne Zusammenfassung 相似文献
153.
Souad Mokrane Laïd Makhloufi Nicolas Alonso-Vante 《Journal of Solid State Electrochemistry》2008,12(5):569-574
Conducting polypyrrole (PPy)/C (Vulcan XC-72) composite materials were synthesized by chemical polymerization method. These
materials were used as matrix to support platinum nanoparticles, which were produced by the carbonyl chemical route. For the
same catalyst loading (50 μg cm−2), it was observed that the nature of the composite strongly influences the electrochemical activity of nanoparticulated platinum
toward the oxygen reduction reaction in acid medium. The variation of the PPy/C ratio determines the so-called substrate effect
for electrocatalysis.
Dedicated to Prof. Dr. Teresa Iwasita on the occasion of her 65th birthday in recognition of her numerous contributions to
interfacial electrochemistry. 相似文献
154.
W. Palmaer E. Heyn O. Bauer H. E. Searle F. L. La Que W. R. van Wijk H. J. Lodeesen Nathalie Goldowski H. Fournier H. Thyssen J. Bourdouxhe E. Naumann U. R. Evans und W. Blum 《Fresenius' Journal of Analytical Chemistry》1939,116(5-6):216-221
Ohne Zusammenfassung 相似文献
155.
J. de Brevans W. von Genersich K. Fischer O. Gruenert C. von der Heide F. Jakob A. Röhrig C. Revis K. B. Lehmann M. Marchadier O. Biernath A. Krüger J. F. Liverseege N. Evers F. H. van der Laan H. Tydens W. Friese R. M. West W. E. Hillyer Ch. H. La Wall H. A. Bradshaw W. D. Mc Abee H. W. Wiley V. Gerlach E. Rost Fr. Franz A. Weitzel und Königliche wissenschaftliche Deputation für das Medizinalwesen in Preussen 《Fresenius' Journal of Analytical Chemistry》1914,53(7):455-467
Ohne Zusammenfassung 相似文献
156.
157.
Magnesium 总被引:1,自引:0,他引:1
L. La Rosa C. Fr. Miller Samuel G. Lasky Frau L. Walter-Levy 《Analytical and bioanalytical chemistry》1936,104(5-6):228-229
158.
Gianluca DAddese Laura Sani Luca La Rocca Roberto Serra Marco Villani 《Entropy (Basel, Switzerland)》2021,23(4)
The identification of emergent structures in complex dynamical systems is a formidable challenge. We propose a computationally efficient methodology to address such a challenge, based on modeling the state of the system as a set of random variables. Specifically, we present a sieving algorithm to navigate the huge space of all subsets of variables and compare them in terms of a simple index that can be computed without resorting to simulations. We obtain such a simple index by studying the asymptotic distribution of an information-theoretic measure of coordination among variables, when there is no coordination at all, which allows us to fairly compare subsets of variables having different cardinalities. We show that increasing the number of observations allows the identification of larger and larger subsets. As an example of relevant application, we make use of a paradigmatic case regarding the identification of groups in autocatalytic sets of reactions, a chemical situation related to the origin of life problem. 相似文献
159.
Electrical,optical, and structural characterization of p‐type N‐doped SnO thin films prepared by thermal oxidation of sputtered SnNx thin films
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A. Garzon‐Fontecha W. De La Cruz M. Quevedo 《Surface and interface analysis : SIA》2017,49(12):1225-1231
We present a study of electrical and optical properties of nitrogen‐doped tin oxide thin films deposited on glass by the DC Magnetron Sputtering method. The deposition conditions to obtain p‐type thin films were a relative partial pressure between 7% and 11% (N2 and/or O2), a total working pressure of 1.8 mTorr and a plasma power of 30 W. The deposited thin films were oxidized after annealing at 250°C for 30 minutes. X‐ray diffraction results showed that the as‐deposited thin films exhibit a Sn tetragonal structure, and after annealing, they showed SnO tetragonal structure. X‐ray photoelectron spectroscopy results showed the presence of nitrogen in the samples before and after annealing. The measured physical parameters of the thin films were optical band gap between 1.92 and 2.68 eV, resistivity between 0.52 and 5.46 Ωcm, a concentration of p‐type carriers between 1018 and 1019 cm?3, and a Hall mobility between 0.1 and 1.94 cm2V?1s?1. These thin films were used to fabricate p‐type thin film transistors. 相似文献
160.