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51.
52.
53.
G. Guglielmo 《Fresenius' Journal of Analytical Chemistry》1892,31(1):192
Ohne Zusammenfassung 相似文献
54.
Guglielmo Lunardon 《Geometriae Dedicata》1986,20(2):121-131
Summary In this paper, for q even, we construct an ovoid O
3 and a spread S of the finite classical polar space Q+(7, q) determinated by a hyperbolic quadric Q+ of PG(7, q) such that there is a subgroup of PGO
+
8
(q) isomorphic to PGL2(q
3), which maps O
3 in itself and S in S and is 3-transitive on O
3 and on S; for q>2, S is not a Desarguesian spread of Q+(7, q) and O
3 is a Desarguesian ovoid.
Al Prof. Adriano Barlotti in occasione del suo 60o compleanno 相似文献
Varietà di Segre e ovoidi dello spazio polare Q+(7, q)
Al Prof. Adriano Barlotti in occasione del suo 60o compleanno 相似文献
55.
56.
Adolf Emil Siegrist Gza Kormny Guglielmo Kabas Hans Schlpfer 《Helvetica chimica acta》1977,60(7):2334-2370
Preparation of heterocyclic substituted stilbenyl derivatives of 2H-1,2,3-triazole Schiff's bases derived from 2- and 4-(p-formylphenyl)-2H-1,2,3-triazoles and o- or p-chloroaniline are reacted with various p-tolyl substitued aromatic heterocycles in the presence of dimethylformamide and potassium hydroxide or potassium t-butoxide to yield the corresponding heterocyclic substituted stilbenes (“Anilsynthesis”). In order to avoid opening of the 2H-1,2,3-triazole ring, the reaction is carried out without external heating. In many cases an improvement in yield is obtained by irradiation with UV. light at the beginning of the reaction. 相似文献
57.
Guglielmo Lunardon 《Combinatorica》2001,21(4):571-581
We point out the relationship between normal spreads and the linear k-blocking sets introduced in [9]. We give a characterisation of linear k-blocking sets proving that the projections and the embeddings of a PG(kt,q) in are linear k-blocking sets of . Finally, we construct some new examples.
Received December 19, 1997/Revised September 19, 2000
RID="*"
ID="*" Partially supported by Italian M.U.R.S.T. 相似文献
58.
59.
Analytical investigation of the SAFE diagram for bladed wheels,numerical and experimental validation
Compressor and turbine bladed wheels interact with the fluid distributed by the stator vanes. They are subject to vibration and fatigue loading, especially when resonance conditions are excited. Avoiding resonance is fundamental when designing bladed wheels. The Campbell diagram approach is too conservative since bladed wheels show many close frequency natural modes, thus it is almost impossible to avoid frequency matching. Singh?s Advanced Frequency Evaluation (SAFE) diagram, or interference diagram, also introduces shape matching in addition to the frequency, for resonance prediction, therefore many frequency matching cases can be identified as non-critical and thus tolerated. The present paper explains and demonstrates the SAFE diagram by introducing an analytical expression to identify bladed wheel resonance conditions. The mode shape matching with a harmonic component is investigated by means of specific examples. Symmetry properties of the matching distribution of harmonic indices and mode shapes are also introduced and demonstrated. Finally, a bladed wheel analysis is used for validation, both in FE simulations and experiments. 相似文献
60.
Cavitand‐Grafted Silicon Microcantilevers as a Universal Probe for Illicit and Designer Drugs in Water
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Dr. Elisa Biavardi Dr. Stefania Federici Dr. Cristina Tudisco Dr. Daniela Menozzi Dr. Chiara Massera Andrea Sottini Prof. Guglielmo G. Condorelli Dr. Paolo Bergese Prof. Enrico Dalcanale 《Angewandte Chemie (International ed. in English)》2014,53(35):9183-9188
The direct, clean, and unbiased transduction of molecular recognition into a readable and reproducible response is the biggest challenge associated to the use of synthetic receptors in sensing. All possible solutions demand the mastering of molecular recognition at the solid–liquid interface as prerequisite. The socially relevant issue of screening amine‐based illicit and designer drugs is addressed by nanomechanical recognition at the silicon–water interface. The methylamino moieties of different drugs are all first recognized by a single cavitand receptor through a synergistic set of weak interactions. The peculiar recognition ability of the cavitand is then transferred with high fidelity and robustness on silicon microcantilevers and harnessed to realize a nanomechanical device for label‐free detection of these drugs in water. 相似文献