Results 121 to 130 of about 627,856 (223)

Projeto arquitetônico: necessidades e dificuldades do arquiteto frente às particularidades do processo construtivo de alvenaria estrututal [PDF]

open access: yes, 2006
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia CivilO estudo do projeto arquitetônico de alvenaria estrutural ainda é pouco discutido e difundido nos meios profissionais e ...
Melo, Mariana Coutinho de
core  

Portulaca abscondita (Portulacaceae, Caryophyllales), a new microendemic species from Monte Azul, Minas Gerais, Brazil

open access: yesNordic Journal of Botany, Volume 2026, Issue 9, September 2026.
Portulaca (Portulacaceae) is a cosmopolitan genus with centers of diversity in Africa and South America. In Brazil, 22 species are recognized, most occurring in xerophytic environments of the Cerrado, particularly in Campos Rupestres. These rocky montane habitats, especially in northern Minas Gerais state, remain undercollected despite their high ...
Danilo Alvarenga Zavatin   +7 more
wiley   +1 more source

Sinningia pampeana sp. nov. (Gesneriaceae) from the Pampa's rocky outcrops in southern Brazil and Uruguay

open access: yesNordic Journal of Botany, Volume 2026, Issue 9, September 2026.
Sinningia pampeana is a new rupicolous species from the rocky outcrops of the Pampa biome in southern Brazil and Uruguay. Morphological analyses based on herbarium material, field observations, and detailed illustrations support its recognition as a distinct species from Sinningia sellovii.
Gabriel Emiliano Ferreira   +4 more
wiley   +1 more source

Clionaidae From Northeastern Brazil: A New Species of Clionaopsis (Rützler 2002), Redescription of Spheciospongia symbiotica (Hechtel 1983), and New Records of Cervicornia cuspidifera (Lamarck 1815)

open access: yesNew Zealand Journal of Zoology, Volume 53, Issue 3, September 2026.
The family Clionaidae d’Orbigny, 1851, includes excavating sponges characterized by tylostyles and a diverse range of microscleres, including spirasters, amphiasters, microxeas, spiral microstrongyles, and derivatives lacking altogether. Despite recent taxonomic advances, generic boundaries within the family remain problematic due to overlapping ...
Elielton F. Nascimento   +2 more
wiley   +1 more source

Influence of Oxygen Contamination on the Genesis of Nonmetallic Inclusions in a Microalloyed Steel

open access: yessteel research international, Volume 97, Issue 9, Page 4647-4654, September 2026.
Oxygen contamination during melting of steels strongly affects the evolution of nonmetallic inclusions. Controlled remelting experiments, combined with SEM/EDS analysis and thermodynamic simulations, reveal how reoxidation promotes the transformation of alumina‐based inclusions into complex FeO–MnO oxides and other interactions.
Leandro Pianca Prandi   +2 more
wiley   +1 more source

Influence of Octenyl Succinic Anhydride Modification on Physicochemical and Functional Properties of Rice Starches With Varying Amylose Content

open access: yesStarch - Stärke, Volume 78, Issue 9, September 2026.
Amylose content governs OSA reactivity and starch functionality. OSA modification reduces amylose and promotes amylose‐dependent substitution, lowering gelatinization temperature and altering pasting behavior while improving stability and amphiphilicity.
Camila de Oliveira Pacheco   +8 more
wiley   +1 more source

Characterization of a Portable Computed Tomography System for In Situ Analysis of Wooden Sculptures in Cultural Heritage

open access: yesX-Ray Spectrometry, Volume 55, Issue 5, Page 763-777, September/October 2026.
ABSTRACT Portable X‐ray computed tomography (portable CT) has become an important tool for the non‐destructive investigation of cultural heritage objects, particularly when in situ analysis is required. This work presents the experimental characterization and application of a transportable cone‐beam CT system designed for the inspection of large and ...
Anderson de Paula   +7 more
wiley   +1 more source

Multielemental Analysis in Rice Grains by Total Reflection X‐Ray Fluorescence

open access: yesX-Ray Spectrometry, Volume 55, Issue 5, Page 743-753, September/October 2026.
ABSTRACT Rice ( Oryza sativa ) is a staple food cultivated worldwide and represents a significant source of essential nutrients for humans. However, this cereal may also contain potentially toxic elements including chromium, arsenic, and lead typically present at trace concentrations (ng.g−1).
F. T. S. Tsuyama   +8 more
wiley   +1 more source

Home - About - Disclaimer - Privacy