Results 41 to 50 of about 3,615 (175)

Underwater Acoustic Target Recognition with a Residual Network and the Optimized Feature Extraction Method

Applied Sciences, 2021
Underwater Acoustic Target Recognition (UATR) remains one of the most challenging tasks in underwater signal processing due to the lack of labeled data acquisition, the impact of the time-space varying intrinsic characteristics, and the interference from
Feng Hong, Chengwei Liu, Lijuan Guo, Feng Chen, Haihong Feng   +4 more
doaj   +1 more source

Caracterização por FT-IR da superfície de borracha EPDM tratada via plasma por micro-ondas FT-IR characterization of EPDM rubber surface treated by microwave plasma

Polímeros, 2012
A superfície de uma borracha de etileno-propileno-dieno (EPDM) vulcanizada foi modificada via plasma por microondas, com gases Ar, Ar/O2, N2/O2 e N2/H2, tendo como objetivo melhorar as propriedades adesivas da superfície.
Renata P. dos Santos, Mauro S. de O. Junior, Elizabeth da C. Mattos, Milton F. Diniz, Rita de C. L. Dutra   +4 more
doaj   +3 more sources

New Ultra Small Iron-Oxide Nanoparticles with Titanium-Carbamate Coating: Preparation and Magnetic Properties [PDF]

, 2012
This work deals with the preparation and chemical characterization of new Ultra-Small Iron-Oxide Superparamagnetic Nanoparticles (USPIONs) functionalized with Titanium-carbamate. The synthesis was performed starting from oleate-coated and 2-pyrrolidone-
Dolci, S., Domenici, V., Jaglicic, Z., Pampaloni, G.   +3 more
core   +1 more source

Detection of Symmetry Enriched Topological Phases

, 2013
Topologically ordered systems in the presence of symmetries can exhibit new structures which are referred to as symmetry enriched topological (SET) phases.
Chen, Xie, Huang, Ching-Yu, Pollmann, Frank   +2 more
core   +1 more source

Precipitation of niobic acid from potassium niobate in sulphuric acid solution: A route to niobium oxide

The Canadian Journal of Chemical Engineering, EarlyView.
Graphical abstract illustrating the niobic acid precipitation process applied and the product obtained. Abstract This study investigates the precipitation of niobic acid (Nb2O5.nH2O) from potassium niobate solution with addition of sulphuric acid, and its subsequent thermal conversion into niobium oxide (Nb2O5). Thermodynamic modelling with PHREEQC and
Cássia R. Souza, Gabriela C. Silva, Isabel P. Silva, Frederico M. Penha, Sônia D. F. Rocha   +4 more
wiley   +1 more source

Natural products from stem bark of Calophyllum andersonii [PDF]

, 2018
Phytochemical study on the stem bark of Calophyllum andersonii has resulted in the isolation of five xanthones, namely (1) caloxanthone I, (2) pyranojacareubin, (3) macluraxanthone, (4) caloxanthone C, and (5) euxanthone.
Ee, Gwendoline Cheng Lian, Jong, Vivien Yi Mian, Karunakaran, Thiruventhan, Tee, Keng Hong, Teh, Soek Sin, Wong, Ka Woong   +5 more
core  

Chromium speciation using an aminated amberlite XAD-4 resin column combined with microsample injection-flame atomic absorption spectrometry [PDF]

, 2018
Amberlite XAD-4 resin (AXAD-4) was chemically modified to an aminated Amberlite XAD-4 (AAXAD-4) resin and characterized by infrared spectroscopy. AAXAD-4 resin was used as an efficient solid phase for the preconcentration and speciation of Cr(III) and Cr(
Aksoy, Erkan, Elçi, Latif, Elçi, Şükrü Gökhan, Siyal, A.N.   +3 more
core   +1 more source

Assessment of the Interaction between Ammonium Dinitramide and Isocyanurate Bonding Agents for Application on Technologies of Composite Solid Propellants

Propellants, Explosives, Pyrotechnics, EarlyView.
This work investigates the interaction of two isocyanurate‐based bonding agents with ammonium dinitramide: triallyl isocyanurate and 1,3,5‐tris(2‐hydroxyethyl) isocyanurate, which contain alkene and hydroxyl functional groups in their side chains, respectively.
Jessica O. Silva, Josiane R. C. Silva, Kamila P. Cardoso, Milton F. Diniz, Márcio Y. Nagamachi, Luiz F. A. Ferrão   +5 more
wiley   +1 more source

A new family of high nuclearity CoII/DyIII coordination clusters possessing robust and unseen topologies [PDF]

, 2015
Mixing Co(NO3)2·6H2O/Dy(NO3)3·6H2O/(E)-4-(2-hydroxy-3-methoxybenzylideneamino)-2,3-dimethyl-1-phenyl-1,2-dihydropyrazol-5-one (HL)/pivalic acid/Et3N in various solvents results in the synthesis of seven compounds formulated as [CoII2DyIII2(μ3-MeO)2(L)2 ...
Alaa Abdul-Sada, Albert Escuer, Alexandropoulos, Armstrong, Benjamin Berkoff, Burkovskaya, Cai, Chandrasekhar, Chesman, Chibotaru, Coles, Coles, Dolomanov, Egorov, Farrugia, George E. Kostakis, Gogoleva, Graham J. Tizzard, Griffiths, Hossain, Johnson, Kieran Griffiths, King, Kitos, Kostakis, Kostakis, Kostakis, Kostakis, Liu, Liu, Loukopoulos, Maayan, Macrae, Mereacre, Mondal, O'Keeffe, Orlova, Palatinus, Papatriantafyllopoulou, Pattacini, Peng, Peng, Powell, Roof, Sañudo, Schmidt, Sharples, Sheldrick, Sheldrick, Simon J. Coles, Spek, Tasiopoulos, Tasiopoulos, Winpenny, Wix, Wooles, Zhang, Zhao, Zheng   +58 more
core   +1 more source

Activating Paper Applying Gelatin, Starch and Chitosan Coatings Loaded With O/W Emulsions Encapsulating Rutin, Carvacrol and α‐Tocopherol

Packaging Technology and Science, EarlyView.
Emulsion type governed the microstructure and functionality of papers coated with biopolymers matrix loaded with hydrophobic bioactives encapsulated into O/W emulsions. Emulsified systems improved UV–Vis barrier and antioxidant activity, whereas gelatin coatings with conventional or Pickering emulsions provided the greatest mechanical reinforcement ...
Kamila de L. Santos, Ana Mônica Quinta Barbosa Bittante, Rodrigo Vinícius Lourenço, Júlio Cesar de Carvalho Balieiro, Paulo José do Amaral Sobral   +4 more
wiley   +1 more source