Results 21 to 30 of about 2,653 (117)

By‐product of heparin extraction as a sustainable alternative to enhance the use of nitrogen in agriculture

Environmental Progress &Sustainable Energy, EarlyView.
Abstract This study evaluates the potential of a new organic fertilizer derived from porcine intestinal mucosa (designated BHE), a by‐product of the heparin extraction process, as a sustainable nitrogen (N) source for agriculture. The work was conducted in two stages: (i) chemical and spectroscopic characterization of BHE compared with poultry litter ...
Aline Zanquetti, Felipe Augusto Bueno Rossi, Jonatas Thiago Piva, Larissa Macedo dos Santos‐Tonial   +3 more
wiley   +1 more source

Análise de métodos executivos de solo pregado a partir de ensaios de arrancamento realizados em laboratório

Geotecnia, 2010
Avaliou-se experimentalmente a influência de três diferentes metodologias executivas (número de injeções) na resistência ao cisalhamento da interface solo-reforço (qs) de uma estrutura de solo pregado construída em laboratório.
Danilo Silva, Benedito Bueno
doaj   +1 more source

Multielemental Analysis in Rice Grains by Total Reflection X‐Ray Fluorescence

X-Ray Spectrometry, EarlyView.
ABSTRACT Rice (Oryza sativa) is a staple food cultivated worldwide and represents a significant source of essential nutrients for humans. However, this cereal may also contain potentially toxic elements including chromium, arsenic, and lead typically present at trace concentrations (ng.g−1).
F. T. S. Tsuyama, R. G. Leitão, C. G. L. Canellas, G. C. Ferreira, J. L. Pereira, R. S. Santos, J. T. Assis, D. F. Oliveira, M. J. Anjos   +8 more
wiley   +1 more source

Comparison of the cleaning efficacy of the FKG race system and hand instrument in molar root canal Comparação da eficácia de limpeza entre o sistema FKG race e instrumentos manuais em molares inferiores

Journal of Applied Oral Science, 2006
INTRODUCTION AND OBJECTIVE: The aim of this study was to evaluate the ability of root canal cleaning of the RaCe rotary instrumentation system (FKG Dentaire - La-Cheaux-de Fonds - Switzerland), compared to manual filing with Stainless Steel K-files ...
Carla Renata Sipert, Renata Pardini Hussne, Celso Kenji Nishiyama   +2 more
doaj   +1 more source

Portable, Benchtop and Micro‐XRF in Agriculture—Present and Future From the Hardware Perspective

X-Ray Spectrometry, EarlyView.
ABSTRACT X‐ray fluorescence (XRF) spectrometry has been an important tool in agricultural studies recently. This technique allows the multielemental, direct, and in situ analysis. The objective of this review is to evaluate the use of XRF in agriculture focusing on plant and soil samples based on indexed articles in the Scopus database from 2020 to ...
Eduardo de Almeida, Felipe Rodrigues Santos, Fabio Luiz Melquiades, Gabriel Sgarbiero Montanha, Tiago Rodrigues Tavares, Eduardo Santos, Higor José Freitas Alves da Silva, Hudson Wallace Pereira de Carvalho   +7 more
wiley   +1 more source

Evaluation of apical deviation in root canals instrumented with K3 and ProTaper systems Avaliação do desvio apical em canais instrumentados pelos sistemas K3 e ProTaper

Journal of Applied Oral Science, 2006
OBJECTIVES: this study evaluated the apical deviation of curved root canals instrumented with K3 and ProTaper systems. MATERIAL AND METHODS: twenty root canals of human maxillary and mandibular first molars were employed, which were divided into 2 groups:
Mariana Diniz Bisi dos Santos, Marília Fagury Marceliano, Patrícia Rodrigues de Almeida Silva e Souza   +2 more
doaj   +1 more source

Trace Element Analysis in Human Neuroblastoma Cell Spheroids Supplemented With ZnCl2 by Micro‐XRF

X-Ray Spectrometry, Volume 55, Issue 4, Page 545-552, July/August 2026.
ABSTRACT Neuroblastoma, the most common extracranial solid tumor of childhood, is responsible for ~10% of pediatric cancer deaths and has high potential for metastasis. Metals are extremely important in biological processes, and changes in their levels have been correlated with the development of cancerous growth.
J. E. P. Rosa, R. G. Leitão, G. C. Ferreira, C. Palmero, E. G. Oliveira‐Barros, M. A. Oliveira, C. G. L. Canellas, L. E. Nasciutti, D. F. Olivera, R. T. Lopes, M. J. Anjos   +10 more
wiley   +1 more source

Different Routes for Camellia Sinensis–Mediated Synthesis of Iron Oxide Nanoparticles: Structural, Thermal, and Magnetic Properties

ChemistrySelect, Volume 11, Issue 19, 20 May 2026.
Different green‐assisted routes (After Synthesis—ASR; Green Subsequent—SSR; Green in situ—ISSR) using Camellia sinensis to produce functionalized iron‐based oxide nanoparticles with controlled and distinct structural and magnetic properties. ABSTRACT Green‐assisted iron oxide nanoparticles (NPs) were synthesized using Camellia sinensis extract (green ...
Jeferson Marques Santos, Renzo Rueda‐Vellasmin, Juan A. Ramos‐Guivar, Edson C. Passamani   +3 more
wiley   +1 more source

Thickness Calculation of Pigment Layers and Gold Leaves Using XRF and MA‐XRF Data

X-Ray Spectrometry, Volume 55, Issue 2, Page 335-348, March/April 2026.
ABSTRACT In this work, XRF and MA‐XRF data were used to estimate the thickness of Chromium Oxide (Cr₂O₃) pigment and gold leaf applied over Lead White (2PbCO3.Pb(OH)2). The thickness determination was based on the differential attenuation of the Pb‐Lα and Pb‐Lβ characteristic X‐rays, which allows correlating the overlying material layer with the Pb(Lα ...
Renato Pereira de Freitas, Ana Letícia Castro de Oliveira, André Rocha Pimenta, Elicardo Alves de Souza Gonçalves, Valter de Souza Felix, Marcelo Oliveira Pereira, Leandro Oliveira Pereira, Rafael Barreto Almada, Raysa Costa Nardes, Marcelino dos Anjos   +9 more
wiley   +1 more source

Avaliação da terminologia utilizada em instrumentação agropecuária

Ciência da Informação, 1995
Há dificuldades em conceituar instrumentação agropecuária. Este trabalho tece algumas considerações sobre o termo instrumentação, mostrando a dificuldade encontrada pelos editores de publicações oficiais brasileiras para definir sua terminologia e ...
Vera Lúcia de Campos Octaviano
doaj