Results 181 to 190 of about 45,249 (286)

Characterization of Respirable Particulate Matter Collected With Cyclones in School Environments of the Metropolitan Region of Rio de Janeiro

X-Ray Spectrometry, Volume 55, Issue 2, Page 366-373, March/April 2026.
ABSTRACT The relevance of investigating atmospheric particulate matter (PM) in the school environment is related to its significant impact on the health of school‐age children. In this context, the present study focuses on the characterization of suspended atmospheric PM in eight elementary schools located in the metropolitan region of Rio de Janeiro ...
J. L. Pereira, F. T. S. Tsuyama, Hamilton S. G. Filho, R. Leitão, C. G. L. Canellas, J. T. Assis, M. J. Anjos   +6 more
wiley   +1 more source

Analysis of seepage failure mechanism in silty-fine sand and its prevention and control research. [PDF]

Sci Rep
Qin P.
europepmc   +1 more source

Evaluating the Microstructure and Interaction of Bioaggregates in Concrete Using microCT

X-Ray Spectrometry, Volume 55, Issue 2, Page 285-293, March/April 2026.
ABSTRACT This study investigates the use of x‐ray computed microtomography (microCT) to evaluate the incorporation of bioaggregates—specifically macauba (Acrocomia aculeata) endocarp and jute fibers—into cement‐based composites. MicroCT enables non‐destructive, three‐dimensional characterization of the internal microstructure, providing insights into ...
Olga M. O. de Araujo, Caio M. S. F. F. dos Santos, Davi F. de Oliveira, Rodolfo G. M. de Andrade, Saulo R. Ferreira, Ricardo T. Lopes   +5 more
wiley   +1 more source

Biochar for Soil Amendment: Applications, Benefits, and Environmental Impacts. [PDF]

Bioengineering (Basel)
Pokharel U, Neelgund G, Ray RL, Balan V, Kumar S.   +4 more
europepmc   +1 more source

Evaluation of Some Parameterization Models for Photon Cross Sections in Quantitative Dual‐Energy CT

X-Ray Spectrometry, Volume 55, Issue 2, Page 294-302, March/April 2026.
ABSTRACT Using multienergy CT with energy‐dispersive detectors and dual‐energy CT (DECT), traditional CT images can be combined to extract material parameters such as electron density (ρ e ) and effective atomic number (Z eff ). This study evaluates parameterizations for deriving ρ e and Z eff from CT numbers (HU) to generate new CT images.
L. D. H. Soares, L. A. S. Lopes, M. E. Poletti   +2 more
wiley   +1 more source

Thyroid Response to Peripheral Endocrine Factors: Neuropeptide Y Influences Thyroid Function in the Reptile <i>Podarcis siculus</i>. [PDF]

Int J Mol Sci
Sciarrillo R, Lallo A, Carrella F, Gallicchio V, Mileo A, Valvano BS, De Falco M.   +6 more
europepmc   +1 more source

Analysis of Heme Using a Combination of Total Reflection X‐Ray Fluorescence Analysis and Solid‐Phase Extraction

X-Ray Spectrometry, Volume 55, Issue 2, Page 303-308, March/April 2026.
ABSTRACT In this study, a method to analyze iron originating from heme using a combination of total reflection X‐ray fluorescence (TXRF) analysis and solid‐phase extraction is presented. In this method, heme in a sample solution was collected on a reverse‐phase solid‐phase extraction column filled with octadecyl bonded silica, and then the collected ...
Haruka Hoshi, Shinsuke Kunimura
wiley   +1 more source

Study on the colonization changes with different dark septate endophytes and their regulation of the growth and physiological mechanisms of <i>Pinus sylvestris</i> var. <i>mongolica</i> under drought stress. [PDF]

PeerJ
Shao P, Deng X, Zhong S, Liao S, Wang Z, Song X.   +5 more
europepmc   +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

Overcoming Detection Challenges of 2,4‑D Herbicides via SERS through a Simple Modification of Citrate-Reduced Silver Nanoparticles. [PDF]

ACS Omega
Dognani G, Fuenzalida FB, Leopoldo Constantino CJ, Sanchez-Cortes S.   +3 more
europepmc   +1 more source