Results 41 to 50 of about 17,231,346 (179)

Revealing the physiological basis of forester’s choice of poplar clones (Populus spp.)

open access: yesiForest - Biogeosciences and Forestry
Poplar plantations cover 31.4 million ha around the world and supply timber for paper, sawn wood and other wood-based products. In each region where poplars are planted, it is possible to identify “model clones” which are massively adopted by foresters ...
Bonnin SM   +3 more
doaj   +1 more source

Two‐dimensional guillotine cutting problem for large objects with non‐rectangular shapes

open access: yesInternational Transactions in Operational Research, EarlyView.
Abstract In this paper, we address the two‐dimensional single large object placement problem with guillotine cutting constraints, focusing on non‐rectangular shapes. We consider objects with circular or convex polygonal geometries and study a variant that includes defective regions from which no items can be extracted. Rectangular items are cut using a
Carise E. Schmidt   +3 more
wiley   +1 more source

Tooth Sensitivity, Bleaching Efficacy, and Quality of Life in Young People and Adults: A Stratified, Randomized Bi‐Center Study

open access: yesJournal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objectives This study compared tooth sensitivity, bleaching efficacy, and the impact on oral health‐related quality of life between at‐home and in‐office tooth bleaching in adults and young individuals. Materials and Methods Eighty participants, 40 young people (14–20 years) and 40 adults (40–60 years), were randomly assigned to receive either
Sirley Raiane Mamede Veloso   +5 more
wiley   +1 more source

Impacto das grandes enchentes na estrutura fundiária da planície aluvial do Rio Paraná, na Argentina [PDF]

open access: yes, 2008
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Civil.Nesta pesquisa se propõe mostrar o impacto das grandes enchentes na estrutura fundiária das ilhas que compõem a planície ...
Gardiol, Mario Ruben
core  

Ensambles de aves del Parque Nacional Pre-Delta (Entre Ríos, Argentina): análisis de la importancia ornitológica de distintas unidades ambientales

open access: yesEl Hornero, 2010
Se analizó la riqueza de especies, composición, abundancia y diversidad de aves en diferentes unidades ambientales en el Parque Nacional Pre-Delta (Entre Ríos, Argentina).
Ana L. Ronchi-Virgolini   +3 more
doaj   +1 more source

Efficacy of In‐Office Bleaching Using 35% Hydrogen Peroxide in an Attachable Syringe Varying the Application Tip: A Double‐Blind Randomized Clinical Trial

open access: yesJournal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective This randomized clinical trial evaluated the bleaching efficacy (BE), absolute risk and intensity of tooth sensitivity (TS), gingival irritation (GI), and esthetic self‐perception (ES) of an in‐office bleaching gel with an attachable syringe using different application tips in a randomized, double‐blind (participant‐ and evaluator ...
Gabrielle Gomes Centenaro   +4 more
wiley   +1 more source

Influencia de la calidad de sitio en el ataque de Platypus mutatus Chapuis (Coleoptera, Platypodidae) a una plantación de sauces (Salix babylonica x Salix alba cv 131/27)

open access: yesEcología Austral, 2004
Se estudió la influencia de la calidad del sitio sobre el ataque del taladro de los forestales (Platypus mutatus Chapuis) en una plantación de Salix babylonica x Salix alba cv 131/27, y se elaboró una alternativa de manejo de la plaga de bajo impacto ...
Edgardo A. Casaubon   +3 more
doaj  

The Effect of Brazil's Family Health Program on Cognitive Skills

open access: yesOxford Bulletin of Economics and Statistics, EarlyView.
ABSTRACT This paper examines the effect of Brazil's Family Health Program (Programa Saude da Familia, FHP) on cognitive skills (measured by test scores) of fifth‐grade students. We use biennial data from national exams between 2007 and 2015, and variation in the FHP implementation date across municipalities, birth cohort, and test year to identify the ...
Pinar Mine Gunes, Magda Tsaneva
wiley   +1 more source

Evolución geomorfológica del delta del Paraná: impulsores naturales y antrópicos [PDF]

open access: yes, 2023
El delta del Paraná se encuentra en la porción inferior de la cuenca del Plata. Con una superficie de 3.200.000 km2, forma parte del ambiente denominado "Río de la Plata", definido como un conjunto de formas vinculadas genéticamente entre sí, generadas ...
Vera, Damián   +2 more
core  

Estado de situación hidrometeorológica en Zona Núcleo Forestal, Delta Medio y Delta Frontal

open access: yes, 2016
Presentaciones en diapositivas realizadas en el marco de la reunión del Consejo Asesor Local de la EEA Delta debido a las condiciones meteorológicas y los aspectos hidrológicos de la cuenca del PlataEEA DeltaFil: González, Adrián Claudio.
Olemberg, Demián Jeremías   +2 more
core   +1 more source

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