Results 71 to 80 of about 2,641 (110)

4,2':6',4''- and 3,2':6',3''-terpyridines: the conflict between well-defined vectorial properties and serendipity in the assembly of 1D-, 2D- and 3D-architectures [PDF]

, 2017
A comparative investigation of the coordination assemblies formed between Co(NCS) 2 and two monotopic 4,2':6',4''-terpyridine (4,2':6',4''-tpy) ligands or two related ditopic ligands is reported.
Constable, Edwin C., Housecroft, Catherine E., Klein, Y. Maximilian, Prescimone, Alessandro   +3 more
core   +2 more sources

Infrared Spectroscopy Applied to Materials Used as Thermal Insulation and Coatings

Journal of Aerospace Technology and Management, 2013
http://dx.doi.org/10.5028/jatm.v5i4.265 It is very important to control the characteristics of a polymer used in rubber compositions and paints in aerospace applications.
Natália Beck Sanches, Ricardo Pedro, Milton Faria Diniz, Elizabeth da Costa Mattos, Silvana Navarro Cassu, Rita de Cássia Lazzarini Dutra   +5 more
doaj  

Exploring the role of the α-carboxyphosphonate moiety in the HIV-RT activity of α-carboxy nucleoside phosphonates [PDF]

, 2016
As α-carboxy nucleoside phosphonates (α-CNPs) have demonstrated a novel mode of action of HIV-1 reverse transcriptase inhibition, structurally related derivatives were synthesized, namely the malonate 2, the unsaturated and saturated bisphosphonates 3 ...
Arnold, Eddy, Balzarini, Jan, Das, Kalyan, Ford, Alan, Maguire, Anita R., Maguire, Nuala M., Mullins, Nicholas D.   +6 more
core   +1 more source

5-Fluorouracil Loaded Chitosan–PVA/Na+MMT Nanocomposite Films for Drug Release and Antimicrobial Activity [PDF]

, 2016
In the present study, chitosan and polyvinyl alcohol (PVA) were blended with different concentrations of sodium montmorillonite (Na?MMT) clay solution by a solvent casting method. X-ray diffraction and transition electron microscope results show that the
A. Babul Reddy, B. Manjula, E. R. Sadiku, P. Anand Babu, S. Periyar Selvam, T. Jayaramudu   +5 more
core   +2 more sources

Leveraging Prior Knowledge in Semi-Supervised Learning for Precise Target Recognition

Remote Sensing
Underwater acoustic target recognition (UATR) is challenged by complex marine noise, scarce labeled data, and inadequate multi-scale feature extraction in conventional methods.
Guohao Xie, Zhe Chen, Yaan Li, Mingsong Chen, Feng Chen, Yuxin Zhang, Hongyan Jiang, Hongbing Qiu   +7 more
doaj   +1 more source

Quantificação por NIR/MIR de resina poliuretânica em misturas binárias com nitrocelulose utilizadas em tintas

Polímeros, 2014
Foi elaborada uma nova metodologia nas regiões do infravermelho médio (MIR) e do infravermelho próximo (NIR), usando-se técnicas de Reflexão e/ou Transmissão para a determinação do teor de resina poliuretânica (PU) em misturas binárias com nitrocelulose (
Viviane Cristine Rodrigues, Rita de Cássia Lazzarini Dutra, Milton Faria Diniz, Elizabeth da Costa Mattos   +3 more
doaj   +1 more source

UTILIZAÇÃO DE TÉCNICAS ESPECTROSCÓPICAS NO INFRAVERMELHO (FTIR-UATR), ACOPLADAS A ANÁLISES ESTATÍSTICAS MULTIVARIADAS, NA ANÁLISE DE QUALIDADE DE COLORÍFICOS ALIMENTÍCIOS CONTENDO URUCUM

Revista Univap
Food colorings (FCs) have the important function of improving the appearance and flavor of foods. There are two types of FCs: the artificial ones, which are obtained by chemical synthesis, and the natural ones, which are extracted from natural sources.
Devanir De Sousa Corrêa, Lucas Ferreira Lyra, Fatima Maria Broca, Ana Maria Barbosa, Kumiko Koibuchi Sakane   +4 more
openaire   +2 more sources

Quantification of Aerospace Polymer Blends by Thermogravimetric Analysis and Infrared Spectrometry

Journal of Aerospace Technology and Management, 2019
Ethylene-propylene-diene elastomer (EPDM) is employed as thermal insulation for rocket motors, as well as EPDM blends with ethylene vinyl acetate (EVA) have been used in the aerospace industry.
Paulo Santos Rigoli, Lídia Mattos Silva Murakami, Milton Faria Diniz, Margarete Ferreira Prata Azevedo, Silvana Navarro Cassu, Elizabeth da Costa Mattos, Rita de Cássia Lazzarini Dutra   +6 more
doaj   +3 more sources

Quantification of elastomers in CR/NR/BR blends [PDF]

Polímeros
Using ternary blends is a technological solution to combine the best characteristics of different elastomers. Quantifying rubbers in a blend, in which each content influences the result, is a task complex and usually requires the coupling of techniques ...
Taynara Alves de Carvalho, Alexandra Helena de Barros, Rachel Farias Magalhães, Milton Faria Diniz, Lídia Mattos Silva Murakami, Jorge Carlos Narciso Dutra, Natália Beck Sanches, Rita de Cássia Lazzarini Dutra   +7 more
doaj   +1 more source

A study of fatigue crack closure using electric potential and compliance techniques [PDF]

Compared are closure data produced on the same specimen by the crack tip compliance gage and electric potential techniques. Experiments on 7075-T651 aluminum center cracked panels produced equivalent results on closure using the two techniques.
Cassatt, G. C., Clarke, C. K.
core   +1 more source