Results 21 to 30 of about 10,549 (210)

O catador de materiais recicláveis no município de Ponta Grossa, Paraná

Revista Desenvolvimento Social, 2021
A política pública social constitui-se em um dos pilares do Estado e volta-se para a provisão de recursos destinados a ações redistributivas que possibilitem meios de subsistência hábeis a alcançar e garantir equidade mínima na sociedade.
Reidy Rolim de Moura, Karoline Dutra Szul, Thais Sanson Sene   +2 more
doaj   +1 more source

Do landfills affect the environmental quality of nearby streams?

Biotemas, 2017
When inappropriately disposed, solid waste may contaminate the soil, water and air, leading to severe negative impacts on biodiversity. The Brazilian National Policy for Solid Waste (PNRS) requires municipalities to ensure the environmental quality of ...
Leandro Schlemmer Brasil, Karina Dias-Silva   +1 more
doaj   +1 more source

Relaxor ferroelectric behavior: An approach considering both the dipolar and electrical conductivity contributions

Journal of Advanced Dielectrics, 2021
The relaxor behavior of PLZT ferroelectric ceramics has been analyzed in a wide frequency and temperature ranges, below and above the temperature for the formation of the so-called polar nano-regions (PNRs).
C. Carreras-Casas, O. García-Zaldívar, A. Peláiz-Barranco, Y. González-Abreu, F. Calderón-Piñar, J. D. S. Guerra   +5 more
doaj   +1 more source

A política nacional de resíduos sólidos: problemáticas da implementação municipal

Campos Neutrais, 2023
Desde 2010 o Brasil possui uma política nacional sobre a gestão dos resíduos sólidos, entretanto a política ainda não foi totalmente implementada nos municípios brasileiros.
Beatriz Brasil da Silva Monteiro, Maria Dolores Lima da Silva   +1 more
doaj  

Blood pressure and indices of glomerular filtration area in hypertensive and normotensive Prague rats [PDF]

, 2000
The involvement of the kidney in the pathogenesis of hypertension has long been recognised, although the specific renal mechanisms underlying this phenomenon are still unknown.
Davis, J. M., Hellmann, H., Thurau, K.
core   +1 more source

AgNb7O18 : an ergodic relaxor ferroelectric [PDF]

, 2014
AgNb7O18 is an ergodic relaxor ferroelectric at room temperature with an incipient transition to the nonergodic state. Electron diffraction confirms a locally polar symmetry, while X-ray diffraction perceives a nonpolar structure.
Beanland, R., Woodward, David I.
core   +1 more source

Stabilization of Polar Nano Regions in Pb-free ferroelectrics

, 2017
Formation of polar nano regions through solid-solution additions are known to enhance significantly the functional properties of ferroelectric materials.
Abernathy, D. L.,, Borreguero, J. M.,, Budisuharto, A. Setiadi,, Christianson, A. D.,, Dmowski, W.,, Egami, T.,, Jørgensen, M. R.V.,, Lund University., Novak, N.,, Pramanick, A.,, Weyland, F.,   +10 more
core   +1 more source

Nanostructured Conductive Polypyrrole for Antibacterial Components in Flexible Wearable Devices

Research, 2023
The power generated by flexible wearable devices (FWDs) is normally insufficient to eradicate bacteria, and many conventional antibacterial strategies are also not suitable for flexible and wearable applications because of the strict mechanical and ...
Yuzheng Wu, Dezhi Xiao, Pei Liu, Qing Liao, Qingdong Ruan, Chao Huang, Liangliang Liu, Dan Li, Xiaolin Zhang, Wei Li, Kaiwei Tang, Zhengwei Wu, Guomin Wang, Huaiyu Wang, Paul K. Chu   +14 more
doaj   +1 more source

Development of Ferroelectric Order in Relaxor (1-x)Pb(Mg1/3Nb2/3)O3 - xPbTiO3

, 2002
The microstructure and phase transition in relaxor ferroelectric Pb(Mg1/3Nb2/3)O3 (PMN) and its solid solution with PbTiO3 (PT), PMN-xPT, remain to be one of the most puzzling issues of solid state science.
A. A. Bokov, A. A. Bokov, A. A. Bokov, A. A. Bokov, A. A. Bokov, A. A. Bokov, A. A. Bokov, B. Dkhil, B. Noheda, B. Noheda, B. Noheda, C.-S. Tu, D. Viehland, E. V. Colla, G. Burns, G. Calvarin, G. K. Williamson, G. Shirane, H. Arndt, J. Gao, K. Fujishiro, K. Hirota, L. Bellaiche, L. E. Cross, L. W. Finger, N. de Mathan, O. Bunina, O. Didault, O. Noblanc, P. Bonneau, P. M. Gehring, P. Stephens, R. Blinc, R. D. Shannon, R. E. Newhnam, R. Pirc, S. B. Vakhrushev, S. J. Jang, S. L. Swartz, S. W. Choi, S. Wakimoto, S.-E. Park, S.-E. Park, T. Shrout, T. Y. Koo, V. Westphal, W. Kleemann, Y. Bing, Y. Imry, Y. Uesu, Z.-G. Ye, Z.-G. Ye, Z.-G. Ye, Z.-G. Ye, Z.-G. Ye   +54 more
core   +1 more source

Direct observation of the formation of polar nanoregions in Pb(Mg 1/3Nb2/3)O3 using neutron pair distribution function analysis [PDF]

, 2005
Using neutron pair distribution function analysis over the temperature range from 1000 to 15 K, we demonstrate the existence of local polarization and the formation of medium-range, polar nanoregions (PNRs) with local rhombohedral order in a prototypical
Darling, TW, Dmowski, W, Egami, T, Heffner, RH, Hong, KS, Jeong, IK, Lee, JK, Park, JS, Proffen, T   +8 more
core   +1 more source