Results 131 to 140 of about 2,513,721 (330)

Experimental Observation of a Calcium Silicon Double Carbonate

Angewandte Chemie, EarlyView.
High‐pressure and ‐temperature reactions between Ca5(Si2O7)(CO3)2 tilleyite and CO2 carbon dioxide yield the first experimental evidence of the double carbonate Ca2Si(CO3)4 and a new Ca2(C4O10) phase containing tetrahedral [CO4] units. These findings reveal unexpected carbonate chemistry and highlight pathways for carbon incorporation under mantle ...
Benedito Donizeti Botan‐Neto, David Santamaria‐Perez, Julia Bungarten, Lkhamsuren Bayarjargal, Björn Winkler, Alberto Otero‐de‐la‐Roza, Bihan Wang   +6 more
wiley   +2 more sources

Composição física da carcaça e rendimento dos cortes comerciais de bovinos de dois grupos genéticos abatidos com diferentes pesos

Boletim de Indústria Animal, 2007
Nove novilhos ¾ Nelore-¼ Canchim e nove ¾ Nelore-¼ Caracu, com peso vivo médio inicial de 312 e 303kg, respectivamente e média de idade de 22 meses, foram utilizados para avaliar os efeitos dos grupos genéticos e dos diferentes pesos ao abate (430, 470 e 530kg) sobre a composição física e o rendimento dos cortes comerciais da carcaça.
Fabiana Maldonado, Augusto César de Queiroz, Guilherme Fernando Alleoni, Flávio Dutra de Resende, Paulo Roberto Leme, Celso Boin, Romeu Fernandes Nardon, João José Assumpção Abreu Demarchi, Rodrigo Vidal Oliveira   +8 more
openaire   +5 more sources

Admisson Process to the Scholarship PNPD/CAPES – PPGFSC/UFSC [PDF]

, 2017
The Program’s Coordinator of the Graduate Program in Physics of the Federal University of Santa Catarina (PPGFSC/UFSC), in exercising his attributions conferred by the Normative Resolution nº.
Física, Programa de Pós-graduação
core  

Critical Limitations in Cryogenic Laser Cooling of Solids: Symmetry‐Related Fluorescence Trapping and Condensation‐Induced Parasitic Heating

Advanced Science, EarlyView.
This study uncovers two overlooked bottlenecks in cryogenic laser cooling of solids: symmetry‐driven fluorescence trapping and water vapor condensation. We demonstrate that breaking sample symmetry enhances fluorescence escape, while condensation dominates parasitic heating below 135 K.
Biao Zhong, Jiayi Zhang, Haodong Yang, Lianzhong Deng, Mauro Tonelli, Ercang Luo   +5 more
wiley   +1 more source

ALGUNAS ACTIVIDADES EXPERIMENTALES COMO ESTRATEGIAS DIDÁCTICAS PARA LA FORMACIÓN DE PROFESORES DE FÍSICA

Investigación y Postgrado
La formación de docentes adecuadamente preparados en el área de física constituye un aspecto fundamental para el avance de esta ciencia básica, cuyas aplicaciones constituyen un factor de primer orden para el desarrollo socioeconómico de cualquier país.
Eddie Alcívar-Castro, Orley Benedicto Reyes Meza, Margarita Ávila-Rosales   +2 more
doaj  

PHYSICAL AND NURSING : TALKING ABOUT LEVERS, FORCE AND PAIN

Revista de Pesquisa Cuidado é Fundamental Online, 2012
Objetivo: Analisar as dificuldades enfrentadas pelos cuidadores familiares para cuidar de idosos no domicílio. Metódo: Trata-se de estudo exploratório-descritivo, com abordagem qualitativa. Os dados foram coletados por meio de entrevista semi-estruturada.
Maria Aparecida de Luca Nascimento, Dalmo Valério Machado de Lima, Márcia Barbosa Paiva, Aline Verônica Oliveira Gomes   +3 more
doaj  

A Soft, Flexible Implant for Wireless Photothermal–Pyroelectric Neurostimulation

Advanced Science, EarlyView.
A replication strategy is used to enlarge the exposed surface area of barium titanate within flexible films with embedded carbon nanotubes, enabling efficient photothermal‐pyroelectric stimulation. Polar crystalline nanosheets show superior performance in guiding neural progenitor cells toward neuronal differentiation.
Jiang Wu, Minmin Mao, Beltzane Garcia Cirera, Hao Ye, Xiangzhong Chen, Josep Puigmartí‐Luis, Ni Qin, Salvador Pané   +7 more
wiley   +1 more source

La pregunta y el método en la exposición de las cuatro causas en Aristóteles

Revista Filosofía UIS, 2011
Se encuentran dos exposiciones de la teoría de las cuatro causas en Aristóteles; una en Metafísica A y otra en Física II, 3. Si bien ambas exhibiciones son iguales en el contenido, difieren sí en la forma de la exposición.
Cristina Pérez Díaz
doaj  

Biocompatible Magnetopyroelectric Composite Films for Cell Stimulation

Advanced Science, EarlyView.
Magnetopyroelectric films couple Fe3O4 nanoparticles with pyroelectric P(VDF‐TrFE) to turn alternating magnetic fields into controlled heat and pyroelectric currents. This heavy‐metal free platform safely boosts neural progenitor cells differentiation via synergistic thermal and pyroelectrical cues, engages AKT and calcium pathways, and opens practical
Hao Ye, Joaquin Llacer‐Wintle, Semih Sevim, Elric Zhang, Denis von Arx, Lukas Hertle, Martina Accursi, Minsoo Kim, Josep Puigmartí‐Luis, Bradley J. Nelson, Xiang‐Zhong Chen, Salvador Pané   +11 more
wiley   +1 more source

Halide‐Exchange Arrest Enables Reabsorption‐Free CsPbCl3/CsPbI3 Perovskite Core/Shell Nanocrystals

Advanced Science, EarlyView.
Achieving large Stokes shifts in perovskite nanocrystals is challenging due to halide mobility that disrupts stable core–shell structures. Using CdCl2 passivation, this work stabilizes CsPbCl3/CsPbI3 heterostructures, yielding a ≈1.2 eV Stokes shift, high quantum yield, and fast exciton transfer, enabling reabsorption‐free emitters for advanced ...
Hiba H. Karakkal, Saptarshi Chakraborty, Matteo L. Zaffalon, Jordi Llusar, Shehla Gul, Andrea Fratelli, Leonardo Poletti, Laura Lazzarini, Daniela Erminia Manno, Francesco Meinardi, Francesco Carulli, Francesca Rossi, Ivan Infante, Sergio Brovelli   +13 more
wiley   +1 more source