Article
Environmental Sciences
Joao Gilberto Meza Ucella-Filho, Ananias Francisco Dias Junior, Elias Costa de Souza, Joo Gabriel Missia da Silva, Analder Sant'anna Neto, Ana Paula Camara da Silva, Lourdes Maria Hilgert Santos, Daigard Ricardo Ortega Rodriguez, Mario Tomazello-Filho, Jose Otavio Brito
Summary: The interest of biofuel producers in Neotropical species with high growth rates and environmentally-friendly wood composition has increased. This study investigated the density and chemical characteristics of S. parahyba var. amazonicum wood for bioenergy generation. Trees with better growth produced wood with higher density, and higher concentrations of K and S, and lower concentrations of Ca and Cl. The wood of S. parahyba var. amazonicum has potential for bioenergy production, but monitoring chlorine and sulfur levels is important to mitigate climate change effects.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Daniel A. Hunter, Samuel P. Lavery, Paul R. Edwards, Robert W. Martin
Summary: The impact of secondary fluorescence on the measurement of material compositions in layered semiconductor thin films using X-ray analysis is assessed through simulations. It is found that the quantification of trace elements is susceptible to secondary fluorescence, which may lead to erroneous results. However, the overall impact on major constituents is minimal, indicating that previous wavelength-dispersive X-ray compositions are not compromised by secondary fluorescence.
MICROSCOPY AND MICROANALYSIS
(2022)
Article
Forestry
Carolina Benghi Pinto, Renato Marques, Cilmar Antonio Dalmaso, Matheus Severo de Souza Kulmann, Isabel Deliberali, Mauro Valdir Schumacher, Jairo Calderari de Oliveira Junior
Summary: The productivity of loblolly pine in southern Brazil is one of the highest in the world, thanks to genetic breeding programs, species adaptation, and silvicultural management. Understanding the relationship between wood productivity and soil attributes is crucial for guiding forest plantation management practices.
FOREST ECOLOGY AND MANAGEMENT
(2023)
Article
Chemistry, Physical
Heinz -Eberhard Mahnke
Summary: Recent research on cultural heritage objects has utilized various radiation techniques, ranging from simple visual inspections to highly complex and advanced methods. This interdisciplinary approach requires collaboration between the fields of art, humanities, and natural sciences.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Agronomy
Victor Chubarov, Tatiana Cherkashina, Artem Maltsev, Elena Chuparina, Alena Amosova, Sergey Prosekin
Summary: X-ray fluorescence analysis was used to assess the ecological state of an area potentially polluted by emissions from the aluminum industry and heat power engineering. The results showed significant contamination pollution levels in the soil and pine needles in the studied area.
Article
Nuclear Science & Technology
Junghwan Park, Yong Suk Choi, Junhyuck Kim, Jeongmook Lee, Tae Jun Kim, Young-Sang Youn, Sang Ho Lim, Jong-Yun Kim
Summary: A new Compton scattering X-ray radiation method was proposed for real-time, non-contact measurement of organic film thickness. X-ray fluorescence and Compton scattering showed good correlations with organic film thickness, with potential applications across different thickness ranges.
NUCLEAR ENGINEERING AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Dale E. Newbury, Nicholas W. M. Ritchie
Summary: The study confirms observations of unexpected deviations in analytical accuracy when using L-shell X-ray peaks for intermetallic compounds, and extends the analysis to a wide range of elements. Compound standards often improve analytical accuracy, but don't always provide satisfactory results.
MICROSCOPY AND MICROANALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Sounderya Nagarajan, Florent Poyer, Laura Fourmois, Delphine Naud-Martin, Kadda Medjoubi, Andrea Somogyi, Gabrielle Schanne, Lucas Henry, Nicolas Delsuc, Clotilde Policar, Helene C. Bertrand, Florence Mahuteau-Betzer
Summary: In this study, two bimodal probes suitable for X-ray fluorescence imaging were designed, capable of labeling organelles. One probe altered the localization in live cells, while the other retained good photophysical properties and labeling ability in live cells. The influence of calcium channels on probe uptake was also investigated.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Spectroscopy
Brendan J. Orenstein, David T. Flannery, Lachlan W. Casey, William T. Elam, Christopher M. Heirwegh, Michael W. M. Jones
Summary: A new automated method based on statistical threshold is proposed to remove diffraction peaks from multiple-detector spectra, which retains more fluorescence data and increases the information content available for diffraction-free elemental quantification and mapping. The proposed method does not require an increase in dwell times or additional data to be collected to compensate for the removed fluorescence data.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2023)
Article
Spectroscopy
Stefano Martinuzzi, Claudia Giovani, Walter Giurlani, Emanuele Galvanetto, Nicola Calisi, Michael Casale, Claudio Fontanesi, Samuele Ciattini, Massimo Innocenti
Summary: The proposed method for measuring metallic coating thickness relies on self-produced standards made through an electroplating process and ensures sufficiently homogeneous thickness distribution consistent with certified standard specifications.
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
(2021)
Article
Multidisciplinary Sciences
Christopher Dostal
Summary: This study utilized portable X-Ray fluorescence to analyze pigment patterns in 33 paintings by Julian Onderdonk, and identified distinctive pigment preferences for different periods of his career by analyzing the dated works and assigning undated works based on their pigment patterns.
Article
Nanoscience & Nanotechnology
Nicolo D'Anna, Dario Ferreira Sanchez, Guy Matmon, Jamie Bragg, Procopios C. Constantinou, Taylor J. Z. Stock, Sarah Fearn, Steven R. Schofield, Neil J. Curson, Marek Bartkowiak, Y. Soh, Daniel Grolimund, Simon Gerber, Gabriel Aeppli
Summary: The progress of miniaturization in integrated electronics has led to atomic and nanometer-sized dopant devices in silicon. However, the ability to obtain atomic-species-specific images of the final structure remains a challenge, which is necessary for building more complex nano-scale devices. This study demonstrates the use of X-ray fluorescence to create an element-specific image of As dopants in Si without affecting the device's low temperature electronic properties.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Hongming Chen, Miao Lin, Changbin Zhao, Dongwei Zhang, Yang Zhang, Fuhai Chen, Yong Chen, Xin Fang, Qing Liao, Hong Meng, Meijin Lin
Summary: This article introduces a highly efficient organic fluorescent scintillator, which is mixed with CBP to form a large area flexible film for X-ray radiography, exhibiting high spatial resolution and low detection limit. This research provides a new approach for efficient X-ray scintillation and imaging.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Qianqian Xu, Wenjing Xia, Lazhen Zhou, Zhengwei Zou, Qiuxia Li, Lijun Deng, Sha Wu, Tao Wang, Jingduo Cui, Zhiguo Liu, Tianxi Sun, Junsong Ye, Fangzuo Li
Summary: Liver fibrosis is an important stage in the development of chronic liver disease. In this study, confocal mu-XRF was used to analyze the deposition of iron in liver fibrosis induced by TAA. The results suggest that iron deposition may play a significant role in the progression of hepatic fibrosis induced by TAA.
Article
Chemistry, Physical
Laszlo Szentmiklosi, Boglarka Maroti, Szabolcs Csakvari, Thomas Calligaro
Summary: Non-destructive characterization of decorated porcelain artifacts requires the joint use of surface-analytical methods for the decorative surface pattern and methods of high penetration depth for bulk-representative chemical composition.
Article
Forestry
Michael Douglas Roque Lima, Larissa Goncalves Moraes, Rita de Cassia Carvalho Silva, Udson de Oliveira Barros Junior, Lina Bufalino, Alvaro Augusto Vieira Soares, Gabriel Assis-Pereira, Delman de Almeida Goncalves, Mario Tomazello-Filho, Thiago de Paula Protasio
Summary: Reforestation with Eucalyptus species is important for biomass energy in Brazil, but the northern region lacks such crops. This study evaluates the effect of planting spacing, tree age, and stem forking on dendrometric variables and wood density of T. vulgaris trees in Eastern Amazonia. Forked trees had higher volume and dry wood mass, while wider spacing and longer tree age resulted in higher wood density.
Article
Forestry
Roger Chambi-Legoas, Mario Tomazello-Filho, Jean -Paul Laclau, Gilles Chaix
Summary: The objective of this study was to understand the interactive effects of K fertilization, water availability, and tree age on stem growth and xylem traits of E. grandis trees over a full rotation. The results showed that K fertilization increased tree growth rates but led to an interruption of growth during a severe drought in 2014. However, K fertilization had a positive effect on growth recovery following drought. The main changes in xylem traits during drought occurred in vessel characteristics.
FOREST ECOLOGY AND MANAGEMENT
(2023)
Article
Agronomy
Daigard Ricardo Ortega Rodriguez, Raul Sanchez-Salguero, Andrea Hevia, Daniela Granato-Souza, Gabriel Assis-Pereira, Fidel A. Roig, Mario Tomazello-Filho
Summary: During the past 20 years, the tropical Amazon forests have experienced frequent and severe droughts, leading to unknown impacts on wood traits. This study investigated the long-term and short-term effects of drought on growth and wood density of C. fissilis, and found that certain wood traits, such as ring width and wood density, were highly sensitive to drought. The species showed functional plasticity in forming its wood to adapt to dry conditions. Changes in water limitations during the dry season altered growth thresholds and long-term resilience, increasing vulnerability to climate warming scenarios.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Plant Sciences
Danilo Soares Gissi, Benjamin M. Torke, Mario Tomazello-Filho, Ana Paula Fortuna-Perez
Summary: A new species of Stylosanthes, S. acicularis, was discovered in the Chapada das Mesas National Park in Maranhao, Brazil. It was previously misidentified as S. angustifolia. The new species closely resembles S. hippocampoides but differs in stem indumentum, bristle length, leaflet shape and venation, and shape of the outer bracteole margin. This article provides a morphological description, illustrations with X-ray imaging of the leaflet venation, as well as notes on its geographical distribution, habitat, and conservation status.
Article
Materials Science, Paper & Wood
Patricia Neves, Valdemir dos Santos, Mario Tomazello-Filho, Matheus Roberto Cabral, Holmer Savastano Savastano Junior
Summary: This study investigated the variability in the morphological, physiological, mechanical, thermal, and crystallographic properties of Curaua fiber extracted from different leaf regions. The results showed no statistical differences in tensile strength, Young's modulus, and elongation between the fiber classes. Primary and secondary fibers exhibited superior mechanical performance compared to vascular fibers. Different results were found for aspect ratio and crystalline cellulose contents and crystal sizes among the fiber types.
Review
Forestry
Leif Armando Portal-Cahuana, Claudia Fontana, Gabriel Assis-Pereira, Peter Groenendijk, Fidel A. Roig, Mario Tomazello-Filho
Summary: The article provides an overview of dendrochronological studies in Peru, highlighting the species diversity and the applications in climate reconstruction and forest management. However, there are sampling gaps in representing the climatic and geographic complexity. The tree diversity in Peru offers a valuable opportunity for future studies on the growth and interactions of tropical tree species with climate.
Article
Environmental Sciences
Daigard Ricardo Ortega Rodriguez, Rail Sanchez-Salguero, Andrea Hevia, Daniela Granato-Souza, Bruno B. L. Cintra, Bruna Hornink, Laia Andreu-Hayles, Gabriel Assis-Pereira, Fidel A. Roig, Mario Tomazello-Filho
Summary: The analysis and reconstruction of climate variability in tropical forests using tree-ring records have been increasing. This study assesses the potential of using wood traits such as density and chemical concentrations, in addition to ring width, stable oxygen isotope, sulfur and calcium concentrations, to study climate variability in the Amazon region. The results show that a multi-proxy tropical tree-ring approach can provide reliable reconstructions of climate variability over the Amazon basin.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Forestry
Roger Chambi-Legoas, Mario Tomazello-Filho, Cristiane Vidal, Gilles Chaix
Summary: Near-infrared hyperspectral imaging can be used to build wood density maps for 6-year-old Eucalyptus grandis trees, allowing for feasible early tree selection. The study of inter-annual variations in wood density is important for accurate early selection of trees in drier sites.
TREES-STRUCTURE AND FUNCTION
(2023)
Article
Forestry
Roberthi Alef Costa Teixeira, Michael Douglas Roque Lima, Arystides Resende Silva, Delman de Almeida Goncalves, Leo Jakson da Silva Moreira, Rodrigo Otavio Veiga de Miranda, Ananias Francisco Dias Jr, Mario Tomazello-Filho, Alvaro Augusto Vieira Soares, Thiago de Paula Protasio
Summary: This study aimed to evaluate the impact of different soil textures and nutritional doses on the growth of Tachigali vulgaris trees and provide guidance for commercial plantations in the Amazon region.
Article
Forestry
Larissa Goncalves Moraes, Michael Douglas Roque Lima, Gabriel Assis-Pereira, Delman de Almeida Goncalves, Graziela Baptista Vidaurre, Lina Bufalino, Fernanda Trisltz Perassolo Guedes, Mario Tomazello-Filho, Thiago de Paula Protasio
Summary: The spacing of 3.0 x 3.0 m in Tachigali vulgaris planting can reduce variability in wood properties and increase the proportion of medium-density wood, while forking increases the proportion of low-density wood. Further investigation is needed to understand how silviculture affects wood quality for potential energy crops in the Amazon region.
TREES-STRUCTURE AND FUNCTION
(2023)
Article
Forestry
Cassiana Alves Ferreira, Janet Gaby Inga Guillen, Raul Huacho Buendia, Osir Daygor Vidal Alanya, Danessa Clarita Reyes Aliaga, Walter Goytendia Centeno, Benji Steve Ascue Miranda, Sthefany Madjory Moya Mateo, Thonny Centeno Utos, Andres Velez Echeverry, Mario Tomazello Filho
Summary: This study describes the macroscopic wood anatomical features of 20 tree species from the Peruvian Amazon Forest, Selva Central, including an identification key and botanical validation. These wood species belong to 12 commonly found families in the tropical forests of Peru and are sold as timber in the domestic market and for export. The identification of these tropical tree species can be achieved by analyzing their wood macroscopic anatomical structure and can be used for controlling deforestation and illegal wood trade, as well as proposing policies for biodiversity conservation and sustainable use of natural resources.
Article
Forestry
Leif Armando Portal Cahuana, Erick Alberto Grandez Pina, German Payeza Tuesta, Mario Tomazello-Filho
Summary: This study evaluates the radial variation of wood density and fiber morphology of two commercial forest species in a tropical humid forest in Madre de Dios, Peru: Jacaranda copaia and Hura crepitans. The results show that Jacaranda copaia has a density growth in the pith-bark direction, while the variation in Hura crepitans is not significant, which can be explained by the morphology of its fibers.
Article
Ecology
Daigard R. Ortega Rodriguez, Raul Sanchez-Salguero, Andrea Hevia, Renata C. Bovi, Marciel J. Ferreira, James H. Speer, Fidel A. Roig, Mario Tomazello-Filho
Summary: This study analyzed the tree-ring nutritional evidence of C. fissilis trees to assess their sensitivity and resilience to drought. The results showed that C. fissilis is experiencing changes in nutrient concentration, use, and redistribution, which are associated with increasing wood density and decreasing growth over time, due to the increasing frequency of drought in the southern Amazon.
ECOLOGICAL PROCESSES
(2023)
Article
Forestry
Lu-Ke Zhang, Ke-Cheng Zhu, Hua-Yang Guo, Bao-Suo Liu, Bo Liu, Nan Zhang, Dian-Chang Zhang
Summary: A new cell line derived from the muscle tissue of the golden pompano, called golden pompano muscle (GPM), has been successfully developed and characterized in this study. GPM cells exhibit fibroblast-like morphology and have a high proliferation rate in Leibovitz's L-15 medium supplemented with fetal bovine serum. The GPM cell line has been stable for over 80 generations and can be cryopreserved. It has been confirmed that the GPM cells used in this study are from the golden pompano based on molecular characterization and chromosome analysis. In addition, GPM cells are susceptible to red-spotted grouper nervous necrosis virus (RGNNV) and can be used for gene expression studies and viral pathogenesis research. The interaction between host and virus can also be investigated using this cell line.
