Results 101 to 110 of about 1,095,170 (283)

Avaliação de atributos físicos e estoques de carbono e nitrogênio em solos com queima e sem queima de canavial Evaluation of physical properties and soil carbon and nitrogen stocks as affected by burning or green trash management of sugarcane

Revista Brasileira de Ciência do Solo, 2008
O Brasil é o maior produtor mundial de cana-de-açúcar, de modo que mudanças no seu manejo podem afetar sobremaneira o ambiente. Há quase um século, as pesquisas são baseadas em áreas sob queima da biomassa foliar (palhada) dessa cultura.
Edgar Fernando de Luca, Christian Feller, Carlos Clemente Cerri, Bernard Barthès, Vicente Chaplot, Dinailson Correa Campos, Célio Manechini   +6 more
doaj   +1 more source

Low-metallicity massive single stars with rotation. II. Predicting spectra and spectral classes of chemically-homogeneously evolving stars

, 2019
Context. Metal-poor massive stars are supposed to be progenitors of certain supernovae, gamma-ray bursts and compact object mergers, potentially contributing to the early epochs of the Universe with their strong ionizing radiation.
Hainich, R., Hamann, W. -R., Kehrig, C., Krtička, J., Kubát, J., Kubátová, B., Sander, A. A. C., Shenar, T., Szécsi, D., Tramper, F.   +9 more
core   +1 more source

Alkali Ion‐Incorporated HfO2 Dielectrics for Reconfigurable Neuromorphic Computing

Advanced Functional Materials, EarlyView.
This work presents an indium gallium zinc oxide (IGZO) transistor with an alkali cation‐integrated hafnium dioxide (HfO2) dielectric exhibiting synaptic behavior via ion retention. The solution‐based film fabrication strategy overcomes the limitations of atomic layer deposition (ALD) and precursor coating, enabling the control of synaptic retention ...
Seung Yeon Ki, In Cheol Kwak, Seonkwon Kim, Jihyun Kim, Dong Gue Roe, Se‐Jin Kim, Joohoon Kang, Jeong Ho Cho   +7 more
wiley   +1 more source

A Biologically‐Architected Wear and Damage‐Resistant Nanoparticle Coating From the Radular Teeth of Cryptochiton stelleri

Advanced Functional Materials, EarlyView.
The ultrahard teeth of mollusks that feed on rocky substrates contain a wear‐resistant coating on their surfaces consisting of densely packed mesocrystalline magnetic nanoparticles within an organic matrix. These coatings display significant hardness and toughness through their highly controlled mesocrystalline architectures.
Taifeng Wang, Yu Chen, Ezra Sarmiento, Taige Hao, Atsushi Arakaki, Michiko Nemoto, Pablo Zavattieri, David Kisailus   +7 more
wiley   +1 more source

MPI‐Guided Photothermal Therapy of Prostate Cancer Using Stem Cell Delivery of Magnetotheranostic Nanoflowers

Advanced Functional Materials, EarlyView.
Tumor‐tropic human mesenchymal stem cells (hMSCs) were used as delivery vehicles for magnetotheranostic gold–iron oxide nanoflowers. Magnetic particle imaging of the iron component demonstrated widespread intratumoral distribution and sustained retention in contrast to injection of naked nanoflowers.
Behnaz Ghaemi, Ana Rosu, Shreyas Kuddannaya, Gautier Laurent, Rana Bazzi, Stéphane Roux, Ali Shakeri‐Zadeh, Jeff W. M. Bulte   +7 more
wiley   +1 more source

Burnout in nurses [PDF]

Sestrinska reč, 2018
Introduction: Burnout syndrome is the answer to chronic, emotional and interpersonal stressors who are related to the workplace. It is characterized by mental or emotional exhaustion, a feeling of fatigue and depression with a more emphasis on ...
Bogdanovič Gorica, Kulić Veselinka, Kulić Vojo, Živanović Srđan   +3 more
doaj  

Efeitos da queima seguida de pastejo ou diferimento sobre o resíduo, temperatura do solo e mesofauna de uma pastagem natural Effects of burning followed by grazing or deferring on residual dry matter, soil temperature and mesofauna of a natural pasture

Ciência Rural, 1996
Foi realizado um experimento no Departamento de Zootecnia da UFSM, Santa Maria, RS, Brasil, com o objetivo de estimar os efeitos do fogo associado ao pastejo, com ou sem período de diferimento após a queima, sobre o resíduo e mesofauna edáfica de uma ...
Paulo Rogério Viegas Damé, Fernando Luiz Ferreira de Quadros, César Eduardo Bicca Kersting, José Pedro Pereira Trindade, Zaida Inês Antoniolli   +4 more
doaj   +1 more source

Spatially Tailorable Liquid Crystalline Elastomer Alignment During Digital Light Process 3D Printing

Advanced Functional Materials, EarlyView.
Here, we report the fabrication of 3D printable liquid crystalline elastomer (LCE) structures with spatially tailorable alignment domains within the same layer. This work addresses the long‐standing challenge of preparing complex 3D LCE architectures with patterned functional domains to achieve nonlinear deformations. Fabrication of multi‐domains in 3D
Adam Bischoff, Saman Jamshididana, Zach Miller, Kassandra Hernandez, Nicolas Gonsalves, Andre Olarra, Elliot Yoo, Jeremy A. Herman, Devin J. Roach   +8 more
wiley   +1 more source

Soil’s Physical, Chemical, and Biological Responses to Different Post-Harvest Management of Pinus elliottii in Santa Catarina, Brazil

Land
Post-harvest forest residue management and liming practices can significantly affect soil quality. This study evaluated the impacts of burnt pine harvest residues and lime application methods (surface-applied vs.
Ana Carolina de Mattos e Avila, Gunnar Kirchhof, Marlise Nara Ciotta, Sandra Denise Camargo Mendes, João Frederico Mangrich dos Passos, Marieli do Nascimento, Jackson Adriano Albuquerque   +6 more
doaj   +1 more source

Impacts of fire and grazing management on South Africa’s moist highland grasslands: A case study of the Steenkampsberg Plateau, Mpumalanga, South Africa

Bothalia: African Biodiversity & Conservation, 2015
Background: Grasslands are heavily utilised for livestock agriculture and the resultant degradation through mismanagement contributes to an estimated 60% of this biome being permanently transformed. This study focused on the impact of fire and grazing in
Ian T. Little, Philip A.R. Hockey†, Raymond Jansen   +2 more
doaj   +1 more source