Results 21 to 30 of about 5,557 (136)

Fusão de imagens por IHS para melhorar a identificação de uso do solo em elementos amostrais Image fusion through IHS to improve identification of land use in sample elements

open access: yesEngenharia Agrícola, 2007
Fotografias aéreas métricas atuais sobre áreas específicas nem sempre estão disponíveis. Esse é um dos principais problemas no Brasil para aplicação de técnicas de amostragem de área para a estimativa de safras.
Marcos Adami   +6 more
doaj   +1 more source

A distributed large‐volume soil sampling approach to address spatial heterogeneity in eDNA data collection

open access: yesMethods in Ecology and Evolution, Volume 17, Issue 6, Page 1726-1734, June 2026.
Abstract Soil sampling for eDNA is a useful approach to assess ecological communities in specific locations, such as comparing community composition across different site treatments. However, species' dispersal abilities and habitat selection, among many other factors, drive the uneven distribution of organisms across the landscape. Thus, to accurately
Karen Dyson   +7 more
wiley   +1 more source

Assessing D‐Squame as a Minimally Invasive Technique to Evaluate the Cutaneous Immune Response mRNA in a Dog Model of Canine Atopic Dermatitis

open access: yesVeterinary Dermatology, Volume 37, Issue 3, Page 353-364, June 2026.
ABSTRACT Background Canine atopic dermatitis (cAD) is a multifactorial, inherited skin disease, estimated to affect ≤ 15% of dogs. Studies of skin messenger mRNA in cAD currently use invasive methods, including blood sampling and biopsy collection, whilst advances in human atopic dermatitis study methodology have demonstrated reliable use of minimally ...
Xavier Langon   +5 more
wiley   +1 more source

Delineamento experimental e tamanho de amostra para alface cultivada em hidroponia Experimental design and sample size for hydroponic lettuce crop

open access: yesCiência Rural, 2000
Este estudo visa a estabelecer o delineamento experimental e o tamanho de amostra para a cultura da alface (Lactuca sativa) em hidroponia, pelo sistema NFT (Nutrient film technique).
Valéria Schimitz Marodim   +4 more
doaj   +1 more source

Distribuição espacial de Toxoptera citricida (Kirkaldy) (Hemiptera: Aphididae) na cultura de citros Spatial distribution of Toxoptera citricida (Kirkaldy) (Hemiptera: Aphididae) in citrus orchards

open access: yesRevista Brasileira de Fruticultura, 2006
O estudo da distribuição espacial de pragas é fundamental para elaboração de planos de amostragem para o uso do manejo integrado de pragas. Para o afídeo Toxoptera citricida (Kirkaldy), estudou-se a distribuição espacial em talhões de pomares de citros ...
Francisco Ricardo de Toledo   +2 more
doaj   +1 more source

Risk factors associated with owner‐reported sleep disturbances in Nordic horses

open access: yesEquine Veterinary Journal, Volume 58, Issue 3, Page 728-735, May 2026.
Abstract Background Very little is known about sleep disturbances in horses, although several management or animal‐based factors may contribute to an increased risk of disturbances. Objectives To investigate factors related to rest and sleep behaviour of horses kept in stalls as perceived by Nordic horse owners or caretakers and their association with ...
H. Suomala   +4 more
wiley   +1 more source

Do young Carollia perspicillata (Chiroptera: Phyllostomidae) present higher infestation rates of Streblidae (Diptera)? Jovens de Carollia perspicillata (Chiroptera: Phyllostomidae) apresentam maiores taxas de infestação de Streblidae (Diptera)?

open access: yesBrazilian Journal of Biology, 2012
Ecological aspects related to parasitism are one of the less studied issues in parasitology research, and the scarce evidence available supports that younger specimens present higher infestation rates.
CEL. Esbérard   +4 more
doaj   +1 more source

Mammal Responses to Habitat Degradation Induced by Cashew Expansion in West Africa

open access: yesAnimal Conservation, Volume 29, Issue 2, Page 169-182, April 2026.
Relationships between (a) estimated mammal species richness, (b) overall mammal species photographic rate, (c) carnivore photographic rate, (d) insectivore photographic rate, (e) omnivore photographic rate and (f) herbivore photographic rate and the local habitat characteristics as denoted by the scores of the first component of the Principal Component
Daniel Na Mone   +6 more
wiley   +1 more source

Dimensionamento de amostra na estimação da população de corós em áreas de campo nativo e de cultivo no Estado do Rio Grande do Sul Sample size for estimating population density of white grubs in native and cultivated areas in Rio Grande do Sul State, Brazil

open access: yesCiência Rural, 2011
É importante quantificar a densidade populacional de corós para definir o momento adequado para o controle da praga. Assim, o objetivo deste trabalho foi determinar o tamanho de amostra (número de trincheiras por hectare) para a estimação da média de ...
Alberto Cargnelutti Filho   +5 more
doaj  

Tamanho ótimo de amostra para avaliação de caracteres de frutos de abacaxizeiro em experimentos com adubação usando parcelas grandes

open access: yesRevista Brasileira de Fruticultura, 2013
O objetivo deste estudo foi determinar o tamanho ótimo de amostra para avaliar a massa, o comprimento e o diâmetro de frutos de abacaxieiro, usando parcelas grandes submetidas a diferentes adubações.
Willian Krause   +4 more
doaj   +1 more source

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