Results 61 to 70 of about 42,982 (160)

Investigating the Chemical, Antifungal, and Cytotoxic Properties of Cochlospermum vitifolium Leaves and Stem Bark Extracts

open access: yesChemistry &Biodiversity, Volume 23, Issue 4, April 2026.
This figure contains images created by Freepik from Flaticon. ABSTRACT Comprehensive analysis of the chemical properties and bioactivities of plant extracts is essential for identifying compounds with therapeutic potential. This study analyzed hydroethanolic extracts from the leaves and stem bark of Cochlospermum vitifolium, investigating their ...
Francisco A. S. D. Pinheiro   +9 more
wiley   +1 more source

Caracterización de asfaltos modificados con diferentes aditivos

open access: yesIngeniería, 2011
El uso de asfaltos modificados en la construcción de pavimentos flexibles se ha extendido a nivel mundial como respuesta a condiciones más severas durante su vida útil y buscando un mejor desempeño que permita prolongar su duración.
Fabián Elizondo Arrieta   +2 more
doaj   +1 more source

Sustainable Bioactive Films From Avocado Seed Starch: Biodegradable Extruded Materials Reinforced With Starch Nanocrystals for Active Packaging

open access: yeseFood, Volume 7, Issue 2, April 2026.
Biodegradable avocado seed starch films reinforced with nanocrystals exhibited enhanced thermal stability, decreased water vapor permeability, stronger antioxidant activity, and antimicrobial properties, while still allowing rapid composting degradation.
Pedro Francisco Muñoz‐Gimena   +5 more
wiley   +1 more source

Lingüística de interações moleculares

open access: yesTrans/Form/Ação, 1991
As moléculas biológicas mais interessantes são longos polímeros. Em analogia com a linguagem humana alfabética, estes podem ser chamados de textos, e analisados, quanto à estrutura primária, como sequência de letras (monômeros; como nucleotídeos ...
Romeu Cardoso Guimarães
doaj   +1 more source

Infrared Nano‐Spectroscopy of Single Cell Sections at the Ultrastructural Level

open access: yesNanophotonics, Volume 15, Issue 6, 27 March 2026.
Using nano‐FTIR spectroscopy, we resolve subtle differences in infrared absorption among individual subcellular regions of a human cell line with 50 nm spatial resolution. The multichannel information of nano‐FTIR spectra can provide a basis for detailed biochemical interpretation on the ultrastructural level that complement existing electron ...
Florina Marxer   +6 more
wiley   +1 more source

Preparação e caracterização de membranas microporosas obtidas a partir de blendas de PVDF/PMMA.

open access: yes, 2015
: Microporous membranes were prepared from different blends of PVDF/PMMA (polyvinylidene fluoride/polymethyl methacrylate) using the technique of phase inversion by immersion-coagulation in the presence of a non-solvent, dissolving the polymers in DMF (N'
Menezes, Hilary C.   +2 more
core   +1 more source

Influencia de aditivos (polímeros y polialuminio) en las propiedades físico-mecánicas de mezclas asfálticas en caliente

open access: yesFIGEMPA, 2020
A nivel mundial se ha emprendido el uso de aditivos a fin de tener mezclas asfálticas de mejor calidad y que permitan disminuir el envejecimiento prematuro de las mismas, en nuestro país se requiere investigaciones que sean ejecutadas con distintos ...
Paul Javier León-Torres   +2 more
doaj   +1 more source

Influence of Acrylonitrile Content on Processing, Morphology, Thermal Behavior, and Mechanical Properties of PA/NBR Thermoplastic Vulcanizates

open access: yesJournal of Applied Polymer Science, Volume 143, Issue 11, March 15, 2026.
Influence of acrylonitrile (ACN) content on the processing behavior and morphological development of PA/NBR thermoplastic vulcanizates. Torque‐time profiles, SEM, and SEM/AFM images show that an intermediate ACN level (38%) promotes improved phase dispersion and morphological uniformity, especially with increased processing time, resulting in the most ...
André Luís dos Santos da Silva   +4 more
wiley   +1 more source

Purpose and Profit: Social and Environmental Marketing for Large Companies in Adverse Scenarios

open access: yesCorporate Social Responsibility and Environmental Management, Volume 33, Issue 2, Page 1656-1670, March 2026.
ABSTRACT This qualitative study explored how large companies use social and environmental marketing to boost results in adverse scenarios, analyzing interviews with marketing managers and public documents. The findings reveal distinct strategies. To attract investors, environmental, social, and governance (ESG) communication is targeted at limited ...
Celso Jacubavicius   +4 more
wiley   +1 more source

Hidrogel como substituto da irrigação complementar em viveiro telado de mudas de cafeeiro Hydrogel as a substitute for irrigation in screened seed nursery coffee

open access: yesCiência Rural, 2013
O cafeeiro, em sua fase inicial de mudas, requer um adequado suprimento de água, pois o estresse hídrico pode causar reduções no crescimento e subsequentemente na produção em campo.
Patricia Angélica Alves Marques   +2 more
doaj  

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