Results 171 to 180 of about 1,096,091 (290)

Tecnologia social: uma estratégia para o desenvolvimento [PDF]

, 2004
Esta publicação apresenta reflexões de diversos representantes de instituições governamentais, do terceiro setor, da sociedade civil e de universidades sobre o tema da Tecnologia ...
Antonio E. Lassance, Jr., Claiton José Mello, Eduardo José Siqueira Barbosa, Flávio Cruvinel Brandão, Henrique Tahan Novaes, Jacqueline Rutkowski, Jacques De Oliveira Pena, Juçara Santiago Pedreira, Ladislau Dowbor, Paul Singer, Renato Dagnino, Sidney Lianza, Silvio Caccia Bava, Sonia Maria Portella Kruppa   +13 more
core  

Vast, overlooked peat, and organic soils in Brazil's Cerrado: carbon storage, dynamics, and stability

New Phytologist, Volume 250, Issue 5, Page 2946-2965, June 2026.
Summary Tropical peatlands are critical for climate mitigation due to their dual role as major carbon sinks and methane sources. In rainforests, high and stable rainfall supports peat accumulation in tropical climates. However, groundwater‐fed peatlands in seasonally dry tropical ecosystems remain poorly understood, despite their potential importance ...
Larissa S. Verona, Amy E. Zanne, Susan Trumbore, Paulo N. Bernardino, Guilherme M. Alencar, Thalia Andreuccetti, David Herrera‐Ramírez, João C. F. Cardoso, Demetrius Lira‐Martins, Guilherme G. Mazzochini, Natashi Pilon, Rafael S. Oliveira   +11 more
wiley   +1 more source

Canine Leishmaniasis in Rio de Janeiro, Brazil (2000–2015): Taxonomic Characterisation of Etiological Agents and Geospatial Case Analysis

Zoonoses and Public Health, Volume 73, Issue 4, Page 314-325, June 2026.
ABSTRACT Introduction Canine Leishmaniasis is a vector‐borne zoonotic disease caused by several species of protozoa of the genus Leishmania. In the state of Rio de Janeiro (RJ), Leishmania braziliensis is the most prevalent species causing tegumentary leishmaniasis (TL) and Leishmania infantum is the main causative agent of visceral leishmaniasis (VL).
Luciana de Freitas Campos Miranda, Laryssa Fabiano do Rosário Coelho, Samanta Cristina das Chagas Xavier, Artur Augusto Velho Mendes Junior, Renan Nunes Albuquerque, Aline Fagundes da Silva, Andreza Pain Marcelino, Fernanda Nunes Santos, Sandro Antonio Pereira, Rodrigo Caldas Menezes, Armando de Oliveira Schubach   +10 more
wiley   +1 more source

Desenvolvimento Rural e Conservação do Campo [PDF]

, 1997
openaire   +2 more sources

Wound Repair Using PVA–CA Electrospun Dressings and Cold Plasma In Vivo

Journal of Applied Polymer Science, Volume 143, Issue 20, May 20, 2026.
In vivo wound healing evaluation of different treatments in a murine excisional wound model. (a) Representative photographs of wound closure at 3, 7, and 14 days post‐treatment for the different groups: Control, PVA‐CA, PVA‐CA‐Ag, NTP, PVA‐CA‐NTP, and PVA‐CA‐Ag‐NTP. (b) Experimental design showing six treatment groups with n = 18 wounds per group.
Jonalba M. Pereira, Emilia A. L. S. Arisawa, Antônio L. M. Maia‐Filho, José F. Silva, Nicoly Alves, Carolina H. da‐Silveira, Lucia Vieira   +6 more
wiley   +1 more source

Downward Positive Leader Propagation Modes and Their Effects in Positive Cloud‐to‐Ground Lightning Characteristics

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 9, 16 May 2026.
Abstract The return stroke in a cloud‐to‐ground (CG) flash is initiated when the downward leader either reaches the ground or connects with an upward leader from a grounded structure. Unlike negative downward leaders, which typically propagate in a highly branched manner, downward positive leaders (DPLs) can propagate either in a branched or unbranched
Marcelo M. F. Saba, Diego R. R. da Silva, Ivan T. Cruz, Tagianne P. da Silva, Paola B. Lauria, José Claudio O. Silva, Gabriel S. Diniz, Tom A. Warner, Rasha U. Abbasi, João Carlos M. Alves, Giovane B. Suss, Miguel B. Guimarães Neto, Listz S. Araujo, Ny T. Kieu   +13 more
wiley   +1 more source

Electrochemical Oxidation of Abietic and Dehydroabietic Acids for Sustainable Access to C‐7 and C‐15 Oxygenated Abietanes

ChemSusChem, Volume 19, Issue 9, 14 May 2026.
Batch and flow electrochemical methods enable direct C‐7 oxidation of abietic and dehydroabietic acids from colophony or their methyl derivatives to the corresponding ketones, while a mediated protocol enables additional C‐15 oxygenation, providing sustainable and selective routes to diversified abietane derivatives.
Inês S. Martins, Carlos A. M. Afonso, Jaime A. S. Coelho   +2 more
wiley   +1 more source

Stylosanthes cv. Campo Grande response to Bradyrhizobium inoculation in an Amazon Cerrado Oxisol

Agronomy Journal, Volume 118, Issue 3, May/June 2026.
Abstract Species of the genus Stylosanthes show great potential for use in mixed pastures and as green manure due to their symbiotic potential in symbiosis with diazotrophic bacteria, particularly Bradyrhizobium. These herbaceous legumes can improve pasture quality and contribute to sustainability.
Josimar da Silva Chaves, Krisle Da Silva, Segundo Urquiarga, Eliane do Nascimento Cunha Farias, Jerri Édson Zilli   +4 more
wiley   +1 more source

Cassava production systems optimized for double output: Seed‐cuttings and root yields

Agronomy Journal, Volume 118, Issue 3, May/June 2026.
Abstract Cassava (Manihot esculenta Crantz) is a strategic crop for food security but continues to face major challenges related to low root yields and the lack of optimized systems for producing high‐quality seed‐cuttings. This study evaluated the effects of different planting densities, varieties, and agrochemical‐based seed‐cutting treatments ...
Marcos de Souza Campos, Rafael Parreira Diniz, Dominik Klauser, Michael Robinson, Eder Jorge de Oliveira   +4 more
wiley   +1 more source

Yield, stability, and plasticity of Arabica coffee genotypes under contrasting pruning systems

Agronomy Journal, Volume 118, Issue 3, May/June 2026.
Abstract Coffee yield instability caused by biennial bearing causes coffee yield instability, reducing production predictability and farm income. Biennial drastic pruning (Zero Crop), which alternates harvest and no‐harvest years, has been proposed to reduce this instability, but its benefits depend on genotype performance under contrasting management.
Weverton Pereira Rodrigues, Henrique Duarte Vieira, Rafael Nunes de Almeida, Fábio Luiz Partelli, Dimmy Herlen Silveira Gomes Barbosa, Antonio Santana Batista de Oliveira Filho   +5 more
wiley   +1 more source