Results 151 to 160 of about 8,035 (247)

Carbon, Nitrogen, and Corresponding Stable Isotope Signatures Reveal Channel Banks as Major Sediment Sources in a Tropical Agricultural Watershed

Land Degradation &Development, Volume 37, Issue 13, Page 9008-9020, 15 August 2026.
ABSTRACT Uncertainties about the applicability of δ13C and δ15N as tracers of sediment sources in tropical river basins highlight the need for more in‐depth investigations of these isotopes. This study therefore assessed the effectiveness of δ13C and δ15N signatures in discriminating sediment sources in an agricultural catchment in Northeast Brazil ...
Fábio Farias Amorim, Yuri Jacques Agra Bezerra da Silva, Rennan Cabral Nascimento, Ygor Jacques Agra Bezerra da Silva, Angelo Jamil Maia, Tales Tiecher, Jean Paolo Gomes Minella, Yusheng Zhang, Hari Ram Upadhayay, Simon Pulley, Adrian L. Collins   +10 more
wiley   +1 more source

Protestos rurais em Pernambuco, Brasil: 1964 a 1968

, 2010
Cet article passe en revue les protestations et les grèves rurales dans l’agro-industrie sucrière de Pernambuco, au Brésil, pendant les années 1964 à 1968, et il soulève quelques questions sur le processus de restructuration du mouvement syndical rural après l’instauration de la dictature militaire au Brésil en 1964.
openaire   +2 more sources

Biochar‐Induced Shifts in Fungal Community Structure and Their Association With Soil Physical Properties in Degraded Soil From the Brazilian Semiarid

Land Degradation &Development, Volume 37, Issue 13, Page 9067-9083, 15 August 2026.
ABSTRACT Soil degradation compromises ecosystem functioning. Biochar, a carbon‐rich amendment, has gained attention as a promising strategy to enhance soil structure and restore microbial balance. This study investigated the effects of two biochars, cashew bagasse biochar (CBB) and a co‐pyrolyzed biochar produced from sewage sludge and cashew pruning ...
João Marcos Rodrigues dos Santos, Arthur Prudêncio de Araujo Pereira, Kaio Gráculo Vieira Garcia, Ícaro Vasconcelos do Nascimento, Francisco Luan Almeida Barbosa, Tiago da Costa Dantas Moniz, Gilvanete da Silva Henrique, Murilo de Sousa Almeida, Vania Maria Maciel Melo, Mirian Cristina Gomes Costa, Helon Hébano de Freitas Sousa, Adriana Guirado Artur, Christiana de Fátima Bruce da Silva, Odair Pastor Ferreira, Antônio Gomes de Souza Filho, Erika Valente de Medeiros, Ademir Sergio Ferreira Araujo, Rafael Santiago da Costa, Jaedson Cláudio Anunciato Mota   +18 more
wiley   +1 more source

Shannon Entropy and Lévy Statistics for Machine Learning‐Assisted Spectral Sensing in Random Fiber Lasers With Magnetic Core–Shell Nanoscatterers

Nanophotonics, Volume 15, Issue 15, 13 August 2026.
Random laser emission was observed in a polymer optical fiber structure doped with magnetic Fe3O4@SiO2 core–shell nanoparticles. A direct relationship was demonstrated between Shannon entropy and Lévy statistics regarding intensity fluctuations in the emission modes. The analysis indicated a potential application in a proposed magnetic field and energy
Emanuel P. Santos, Wenyu Du, Edwin D. Coronel, Alyson J. A. Carvalho, G. Palacios, Cecília L. A. V. Campos, Zhijia Hu, Ernesto P. Raposo, Anderson S. L. Gomes   +8 more
wiley   +1 more source

Excess mortality during the COVID-19 pandemic and its spatial distribution in the state of Pernambuco, Brazil: an ecological study. [PDF]

Epidemiol Serv Saude
Silva LM, Silva APSC, Galvão MHR, Silva ALAD, Maia LTS.   +4 more
europepmc   +1 more source

Scanner‐agnostic artificial intelligence approach for fast bone scintigraphy

Journal of Applied Clinical Medical Physics, Volume 27, Issue 8, August 2026.
Abstract Purpose Current bone scintigraphy protocols often demand full‐count, 10–15 min scans to preserve image quality, and existing deep‐learning (DL) denoisers typically need to be retrained or retuned for each camera manufacturer. We introduce a scanner‐agnostic adaptive‐diffusion U‐Net designed to reconstruct diagnostic‐grade images from half‐time
Vinicius de Oliveira Menezes, Cleiton Cavalcante Queiroz, Antônio Augusto Silva Oliveira, Aurílio José dos Santos Filho, Allisson Francisco de Morais, Adriano de Oliveira Vigário, Maria Eduarda Flamini, Felipe Alves Mourato, Tsang Ing Ren, Marcos Antônio Dórea Machado   +9 more
wiley   +1 more source

Brown spiders (Loxosceles) are taking hold in Pernambuco, Brazil: a case series, 2018-2022. [PDF]

Epidemiol Serv Saude
Amorim MLP, Simão DGO, Albuquerque JPVES, Ramos BMT, Nascimento GJLD, Mello MJG.   +5 more
europepmc   +1 more source

Improvement in Outcomes of Childhood Acute Myeloid Leukemia Treatment: A Survival Analysis at a Reference University Hospital in Rio de Janeiro, Brazil

Cancer Reports, Volume 9, Issue 8, August 2026.
ABSTRACT Background Acute myeloid leukemia (AML) represents 15% to 20% of all pediatric acute leukemias and is responsible for nearly 30% of deaths in this population. While high‐income countries report overall survival (OS) rates near 75%, survival in Brazil remains significantly lower, ranging between 30% and 40%.
Thais Alcantara Bonilha, Deborah Sutter Ayres Pereira, Alice Maria Boulhosa de Azevedo, Adriana Martins de Sousa, Elaine Sobral da Costa, Marcelo Gerardin Poirot Land   +5 more
wiley   +1 more source

Mycobacterium tuberculosis and SARS‐CoV‐2 Co‐Infection: An Efficient Cell Model to Study Lung Host–Pathogen Interactions

Current Protocols, Volume 6, Issue 8, August 2026.
Abstract In less than a year, SARS‐CoV‐2 managed to displace Mycobacterium tuberculosis (Mtb) as the leading cause of death worldwide due to a single infectious agent. Both pathogens affect the respiratory tract, mainly the lungs. However, the impact that a possible Mtb + SARS‐CoV‐2 co‐infection can have on the host response is still unknown. Herein we
Thays Maria Costa de Lucena, Débora Elienai de Oliveira Miranda, Juliana Vieira de Barros Arcoverde, Mariana Souza Bezerra Cavalcanti, Willyene Marilia Dantas, Lindomar José Pena, Michelle Christiane da Silva Rabello, Jaqueline de Azevêdo Silva   +7 more
wiley   +1 more source