Results 41 to 50 of about 4,028 (197)

Efecto del paratión metílico en poblaciones del picudo del algodonero.

Agronomía Mesoamericana, 2006
Dosis letales medias del insecticida Paratión Metílico fueron determinadas en poblaciones de picudo del algodonero Anthonomus grandis colectadas en Río Bravo Tamaulipas, México; Tiquisate, Guatemala y Weslaco Texas E.U.A.
Jesús Lorea Gallardo, Dan A. Wolfenbarger   +1 more
doaj   +1 more source

Actividad molusquicida de Laguncularia racemosa (L) C.F. Gaerth sobre Galba cubensis (Pfeiffer, 1839)

Ecosistemas y Recursos Agropecuarios, 2017
Se evaluó la eciencia molusquicida de Laguncularia racemosa sobre Galba cubensis utilizando dos extractos acuosos y aplicación directa de polvo (ADP), los extractos acuosos se elaboraron por el método de reposo en crudo (EMRC) y de infusión (EMI).
Luis José Rangel-Ruiz, Luis Alfredo Cruz-Morales, Juan Armando Arévalo-de la Cruz, Jaquelina Gamboa-Aguilar, Eduardo Moguel-Ordoñez, Coral Jazvel Pacheco-Figueroa, Luis Fernando Roa-de la Fuente   +6 more
doaj   +1 more source

MICROSCOPIC CHANGES IN THE INTERNAL ORGANS OF WHITE MICE DURING EXPERIMENTAL IRON (IV) CLATHROCHELATE TOXICOSISS

Ukrainian Journal of Veterinary Sciences, 2021
Iron (IV) clathrochelate based on a macrobicyclic ligand of the hexahydrazide type is a unique compound that contains iron in a rare high valence IV. Preclinical and clinical studies of this complex, which were started for the first time in Ukraine, have
B. V. Borysevich, Viktoriia Lisova, I. M. DERKACH, Serhii Derkach, V. B. Dukhnitskyi, A. M. TYSHKIVSKA   +5 more
doaj   +1 more source

Crustal Heat Flow Drives the Earthquake Magnitude Distribution

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Earthquake magnitude‐frequency distributions exhibit significant space‐time variations, which can provide critical insights into the physical processes driving seismicity. Understanding these variations is crucial for assessing seismic hazards and uncovering the physical processes driving earthquakes.
P. Corrado, M. Taroni, L. Cordrie, R. Basili, W. Marzocchi, J. Selva   +5 more
wiley   +1 more source

Bioestadística aplicada: software DL50 [PDF]

, 2016
Este trabajo presenta un software para el estudio de la supervivencia a través del método probit; el cual es utilizado en diversos trabajos de investigación y en tesis de grado. El software fue desarrollado para estimar los valores de la dosis letal 50,
Kornuta, Carlos, Rivero, Marta Ofelia, Acosta, Nelson   +2 more
core  

Fault Friction, Plate Rheology, and Mantle Torques From a Global Dynamic Model of Neotectonics

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract Improvements in software, parallel computing, global data sets, and laboratory flow‐laws help to develop the global Earth5 thin‐shell finite‐element model of Bird et al. (2008, https://doi.org/10.1029/2007jb005460) into a benchmark study. All experiments confirm that modeled faults (other than megathrusts) have low effective friction of 0.085 ±
Peter Bird, Jon Bryan May, Michele M. C. Carafa   +2 more
wiley   +1 more source

DETERMINAÇÃO DA DL50 E TOXICIDADE AGUDA DE COMPLEXO DE RUTÊNIO CIS-[RU(BPY)2(2-MIM)CL]+ (FOR011A) EM CAMUNDONGOS SWISS

Revista Multidisciplinar em Saúde, 2023
INTRODUÇÃO: Doenças cardiovasculares (DCVs) são as causas mais comuns de morbidade no mundo. Entender os fatores de riscos das DCVs, como obesidade e sedentarismo, são de grande importância para conhecer melhor os fatores iniciadores destas doenças. No Brasil, a hipertensão arterial sistêmica (HAS) apresenta-se como um dos principais fatores de riscos ...
João Pedro Honorato Oliveira, Paula Mariana Maia Nogueira, Danilo Galvão Rocha, Priscilla Nascimento dos Santos, Renata de Sousa Alves, Helena Serra Azul Monteiro   +5 more
openaire   +1 more source

Seismic Velocity Variations, Ground Deformation and the Role of Fluids During a Low‐Energy Seismic Swarm

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract On March 9th $9\mathrm{th}$, 2023, three small earthquakes (3.8≤Mw≤4.5) $(3.8\le {M}_{w}\le 4.5)$ occurred near Umbertide (Central Italy), within 4 hours. Analyzing seismic ambient noise in the frequency band 0.1–1 Hz from six seismometers within 20 km of the Mw 4.5, we detect a significant drop in seismic velocity at the time of occurrence of
Eugenio Mandler, Lucia Zaccarelli, Massimo Nespoli, Maria Elina Belardinelli, Francesco Pintori, Enrico Serpelloni, Adriano Gualandi, Lauro Chiaraluce   +7 more
wiley   +1 more source

Sensibilité de Lymnaea natalensis à quelques extraits de plantes, à l'âge de deux semaines

Revue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux, 1989
Le pouvoir molluscicide de 17 extraits de plantes nigérianes a été évalué sur des Lymnaea natalensis Krauss de 2 semaines (méthode par extraction aqueuse sans évaporation). Cinq extraits ont été inactifs ; en revanche les extraits de Balanites aegytiaca,
S.L. Kela, R.A. Ogunsusi, V.C. Ogbogu, N. Nwude   +3 more
doaj   +1 more source

AVALIAÇÃO DE TOXICIDADE AGUDA: ESTRATÉGIAS APÓS A “ERA DO TESTE DL50“

Revista Eletrônica de Farmácia, 2007
O presente trabalho discute a avaliacao da toxicidade aguda sistemica apos a eliminacao do teste da DL50 (dose letal mediana). Os tres testes alternativos em animais empregados hoje, Dose Fixa, Toxicidade Aguda de Classe e o Teste “Up and Down”, trouxeram significante melhora para o bem-estar animal.
openaire   +2 more sources