Results 31 to 40 of about 131,894 (228)

CONTRIBUIÇÃO DO PARQUE FLORESTA FÓSSIL NO MEIO URBANO DE TERESINA (PI) [PDF]

open access: yes, 2014
O presente artigo objetiva destacar a importância do Parque Floresta Fóssil do rio Poti para Teresina–PI, analisando sua viabilidade de uso, assim como demonstrar os agentes e processos atuantes na área do parque.
Freitas, Jackson   +5 more
core   +1 more source

Note on the paleobiogeography of Compsognathidae (Dinosauria: Theropoda) and its paleoecological implications

open access: yesAnais da Academia Brasileira de Ciências, 2014
The paleobiogeography of the theropod clade Compsognathidae is here reaccessed in order to test the hypothesis of this taxon being adapted specifically to inhabit semi-arid environments.
MARCOS A.F. SALES   +2 more
doaj   +1 more source

Estudo do uso de eteno verde ou fóssil na síntese de pead e pelbd nominalmente iguais: há diferença efetiva entre esses materiais? / Study on the use of green or fossil ethene in the synthesis of hdpe and pelbd nominally equal: is there an effective difference between these materials? [PDF]

open access: yes, 2020
Neste trabalho, polietilenos fósseis e verdes nominalmente iguais, produzidos pela empresa Braskem, foram analisados com o objetivo de avaliar se mesmo apresentando mesmos índices de fluidez, densidades, propriedades mecânicas e térmicas iguais, a ...
Filho, Marco Aurélio da Silva Carvalho   +6 more
core   +1 more source

Late Pleistocene echimyid rodents (Rodentia, Hystricognathi) from northern Brazil

open access: yesAnais da Academia Brasileira de Ciências, 2016
Echimyidae (spiny rats, tree rats and the coypu) is the most diverse family of extant South American hystricognath rodents (caviomorphs). Today, they live in tropical forests (Amazonian, coastal and Andean forests), occasionally in more open xeric ...
THAIS M.F. FERREIRA   +4 more
doaj   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

open access: yesAdvanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas   +6 more
wiley   +1 more source

Electrospun Wood‐Derived Biopolymers as Electrodes in Electrochemical Energy Storage Technologies

open access: yesAdvanced Functional Materials, EarlyView.
Electrospinning transforms wood‐derived cellulose and lignin into architecturally defined, binder‐free carbon electrodes with tuneable porosity and functionality. This review shows how fibre design enables decoupled charge and mass transport, enhancing performance across battery systems, while identifying key challenges in spinnability, scalability ...
Michael W. Thielke   +3 more
wiley   +1 more source

Energy trends and the water-energy binomium for Brazil

open access: yesAnais da Academia Brasileira de Ciências, 2015
According to the demands of energy saving and carbon emission reduction, the water vs. energy nexus has become a major concern worldwide. Brazil occupies a singular position in the global energy system.
Gisele O. Da Rocha   +2 more
doaj   +1 more source

Structural Power Composites Based on High Mass Loading Zn‐Ion Hybrid Supercapacitors with Metal Mesh Current Collectors and Aramid Nanofiber/Glass Fiber Composite Electrolytes

open access: yesAdvanced Functional Materials, EarlyView.
A multifunctional structural power composite is developed by integrating high‐mass‐loading Zn‐ion hybrid supercapacitors with metal mesh current collectors and aramid nanofiber‐based composite electrolytes, enabling simultaneous load‐bearing capability and enhanced areal energy storage.
Yuseung Choi   +8 more
wiley   +1 more source

A Miniaturized Autonomous Thermomagnetic Generator

open access: yesAdvanced Functional Materials, EarlyView.
Micro, autonomous and high power thermomagnetic generator operating between a heat dissipator and a processor. ABSTRACT Thermomagnetic generators (TMG) are promising devices for converting low‐grade waste heat into electricity. Self‐actuation using permanent magnets is the key to autonomy.
Morgan Almanza   +11 more
wiley   +1 more source

FOSSIL RECORDS

open access: yesBothalia: African Biodiversity & Conservation, 1965
No abstract ...
R. A. Dyer
doaj   +1 more source

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