Results 21 to 30 of about 790 (261)

Efecto tóxico de los extractos de semillas de Annona muricata potenciados con dimetilsulfóxido sobre larvas IV y pupas de Aedes aegypti

open access: yesRevista Peruana de Biología, 2020
El objetivo de este estudio fue demostrar que los principios activos de las semillas de Annona muricata combinados con el extracto etanólico y dimetilsulfóxido (EE-DMSO), incrementan la mortalidad de larvas IV y pupas de Aedes aegypti con relación a ...
Miguel Constante Bobadilla Alvarez   +1 more
doaj   +1 more source

NFYB Integrates Hormonal Signals into Tissue Allometry by Promoting Protein Biosynthesis

open access: yesAdvanced Science, EarlyView.
In the American cockroach, NFYB acts as a spatiotemporin that translates distinct hormonal cues into tissue‐specific allometry. Juvenile hormone activates NFYB in the early fat body, while 20‐hydroxyecdysone induces it in late wing pads. NFYB then promotes protein biosynthesis via core translational machinery, driving differential growth across the ...
Fangfang Liu   +11 more
wiley   +1 more source

¿Multiplicar Tetrastichus howardi (Hymenoptera: Eulophidae) en la oruga de la seda afecta su biología?

open access: yesActa Biológica Colombiana, 2016
La multiplicación sucesiva de parasitoides en hospederos alternativos, puede afectar las características biológicas y comprometer los sistemas de cría masiva de estos.
Nahara Gabriela Piñeyro   +5 more
doaj   +1 more source

Stem Cell Differentiation Disperses Transcriptional Clusters via a Conserved Surface‐Condensate Trajectory

open access: yesAdvanced Science, EarlyView.
Stem cell differentiation follows a conserved surface condensate trajectory: H3K27ac super enhancers nucleate large RNA polymerase II clusters that grow and unfold before transcriptional activity disperses them. This work reveals how biophysical forces at enhancer surfaces dynamically build and dismantle stem cell transcription hubs, reshaping cell ...
Tim Klingberg   +18 more
wiley   +1 more source

Efecto tóxico de Argemone subfusiformis Ownb. y Tagetes patula Link sobre larvas del IV estadio y pupas de Aedes aegypti L.

open access: yesRevista Peruana de Biología, 2008
En el presente trabajo se evaluó el efecto tóxico de los extractos etanólicos foliares de Argemone subfusiformis “cardo santo” y Tagetes patula “marigold” sobre larvas IV y pupas de Aedes aegypti.
Judith Vidal   +3 more
doaj   +1 more source

Bio‐Based Polyurethanes for Sustainable and Multifunctional Applications

open access: yesAdvanced Science, EarlyView.
Bio‐based polyurethanes prepared from vegetable oils, lignin, and polysaccharides have attracted increasing interest as alternatives to fossil‐derived polyurethanes. This review summarizes recent progress in their chemistry, structural engineering, and advanced applications, highlighting the roles of feedstocks, chain‐segment design, dynamic covalent ...
Xin Li   +6 more
wiley   +1 more source

Influência de extratos de formas evolutivas sobre atividades de oviposição de fêmeas de Aedes (s) albopictus (Skuse)

open access: yesRevista de Saúde Pública, 1992
Extratos aquosos de larvas, pupas e ovos foram testados em relação à sua influência sobre o comportamento de oviposição de fêmeas de Aedes (s) albopictus a concentrações de: 1 larva/3 ml; 1 pupa/3ml; 1 ovo/3ml.
Marques Cristiano C.A., Miranda Cristina
doaj   +3 more sources

Guidelines for High‐Throughput Screening for Natural Products With Anti‐Aging Activity Based on Drosophila Intestinal Homeostasis

open access: yesAgriFood: Journal of Agricultural Products for Food, EarlyView.
ABSTRACT Aging represents a critical risk factor for chronic diseases, driving an urgent demand for interventions promoting healthy longevity. This study establishes standardized guidelines for high‐throughput screening (HTS) of anti‐aging natural products using Drosophila melanogaster, leveraging its intestinal homeostasis as a biomarker.
Xiao Sheng, Lei Zhang
wiley   +1 more source

Does salinity make a difference—Kidney anatomy of Saimaa (Pusa saimensis) and Baltic ringed seals (Pusa hispida botnica)

open access: yesThe Anatomical Record, EarlyView.
Abstract As habitat salinity markedly differs between the endangered, freshwater‐dwelling Saimaa ringed seal (Pusa saimensis Nordquist, 1899) and the brackish water‐inhabiting Baltic ringed seal (Pusa hispida botnica Gmelin, 1788), we investigated whether this difference has resulted in morphological changes to their kidneys.
Heini Nihtilä, Juha Laakkonen
wiley   +1 more source

Baeuveria bassiana (Bals)Vuill y Metarhizium anisioplae (Metsch.) Sorokin para el control de pupas de Prodiplosis longifila Gagné en el cultivo de esparrago

open access: yesScientia Agropecuaria, 2012
El objetivo del presente trabajo fue evaluar el efecto de los hongos entomopatógenos Baeuveria bassiana y Metarhizium anisioplae sobre las pupas de Prodiplosis longifila para reducir la población de adultos de este insecto.
Carolina Cedano, Pedro Cubas
doaj   +2 more sources

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