Results 61 to 70 of about 1,128 (134)

Green Biocomposites From Agro‐Waste With Central Layer Architecture: A Performance Comparison Against Glass Fiber Composite

Advances in Polymer Technology, Volume 2026, Issue 1, 2026.
This study develops and evaluates green biocomposites using agro‐waste fibers, maize husk fiber composite (MFC), luffa fiber composite (LFC), and betelnut husk fiber composite (BFC) as core reinforcements in a central‐layer unsaturated polyester resin (UPR) matrix, comparing their performance with a 5% glass fiber composite (5% GFC) and neat UPR ...
Md. Hasibul Hasan, Sourav Biswas, Md. Abdus Sabur, G. M. Shafiur Rahman, Muhammad Abdullah Al Mamun, Srijoni Sengupta   +5 more
wiley   +1 more source

Ionothermal Synthesis of Sulfido‐Antimony Dicubanes with 3d‐Metal Spiro‐Atoms

Zeitschrift für anorganische und allgemeine Chemie, Volume 651, Issue 18, December 10, 2025.
The Lewis‐acidic ionic liquid [BMIm]Cl·4.4AlCl3 activates Sb2S3. With MCl2 (M = Fe, Co, Ni), dicubanes (MSb6S8)4+ can be crystallized. These clusters consist of two cubes that share one vertex, the spiro‐atom M. Counteranions are either [AlCl4]– or the novel group [S(AlCl3)4]2–. All three compounds are paramagnetic. Their optical band gaps range from 1.
Oliver Dreimann, Michael Ruck
wiley   +1 more source

ANÁLISE DE MEDICAMENTOS CONTENTO CLORIDRATO DE CICLOBENZAPRINA POR ESPECTROSCOPIA NO INFRAVERMELHO

Revista UniVap, 2017
O cloridrato de ciclobenzaprina é um dos medicamentos mais utilizados para atuar no relaxamento muscular e alivio de dores agudas ou crônicas, promovendo uma diminuição nos espasmos musculares, torcicolos e dor lombar. Este trabalho propõe-se a analisar,
Willian de Carvalho Nunes, Kumiko Koibuchi Sakane   +1 more
doaj   +1 more source

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  

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

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

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

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

An End-to-End Underwater Acoustic Target Recognition Model Based on One-Dimensional Convolution and Transformer

Journal of Marine Science and Engineering
Underwater acoustic target recognition (UATR) is crucial for defense and ocean environment monitoring. Although traditional methods and deep learning approaches based on time–frequency domain features have achieved high recognition rates in certain tasks,
Kang Yang, Biao Wang, Zide Fang, Banggui Cai   +3 more
doaj   +1 more source