Results 171 to 180 of about 3,385 (255)

Rotenone Induces Morphological Damage and Reduction in Catecholamine Levels in the Central Nervous System of the Ascidian Styela plicata

Environmental Toxicology, EarlyView.
ABSTRACT Ascidians are invertebrates that occupy a key phylogenetic position as a sister group of the vertebrates. The organization of their central nervous system (CNS), with cortex and medulla, indicates a plesiomorphic character of the gray and white matter of vertebrates, making this group of animals useful for studies of neurodegenerative events ...
Andressa de Abreu Mello, Carlos Augusto Borges de Andrade Gomes, Rafaela Rocha dos Santos, Cintia Monteiro de Barros, Silvana Allodi   +4 more
wiley   +1 more source

Microbial growth rates captured using Raman-SIP reveal a highly active subsurface biosphere fueled by serpentinization. [PDF]

Nat Commun
Kashyap S, Caro TA, Templeton AS.
europepmc   +1 more source

A Low‐Power Radioisotope XRF Spectrometer for Detection of Light Elements on Planetary Missions

X-Ray Spectrometry, EarlyView.
ABSTRACT Current X‐ray spectrometers for in situ geochemical analysis on planetary missions typically rely either on X‐ray tubes, which demand electrical power and add mass and thermal complexity, or on alpha particle X‐ray spectrometers (APXS) that use rare 244Cm$$ {}^{244}\mathrm{Cm} $$ sources, and come with severe concerns on radiation safety and ...
Leandro Silveri, Artem Knyazev, Hashem Alaidaros, Maryam Manzoor Amanullah, Zach Ioannou, Tengiz Ibrayev, Danish Khan, Sara Leardini, Laura Manenti, Simi Maria Emilia Mangani, Safa Naseem, Sandhya Sharma, Sara Trevisan, Alia Zino, Francesco Arneodo   +14 more
wiley   +1 more source

Strong nickel enrichment co-located with redox-organic interactions in Neretva Vallis, Mars. [PDF]

Nat Commun
Manelski HT, Wiens RC, Broz A, Hurowitz JA, Tice M, Clegg S, Dehouck E, Randazzo N, Connell SA, Forni O, VanBommel SJ, Schröder S, Mandon L, Gabriel TSJ, Bedford CC, Martinez RK, Cloutis EA, Cousin A, Cable ML.   +18 more
europepmc   +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

Publisher Correction: Diversities of chromite mineralization induced by chemo-thermal evolution of the mantle during subduction initiation. [PDF]

Nat Commun
Zhang PF, Zhou MF, Robinson PT, Malpas J, Yumul GP, Wang CY, Li J.   +6 more
europepmc   +1 more source

Alteration of X‐Ray Emission Band Spectrum Under Bragg Diffraction

X-Ray Spectrometry, EarlyView.
ABSTRACT We use a Zr/Si multilayer presenting a gradient of period to probe the shape of the Si L2,3 emission band (maximum around 92 eV) in and out of Bragg conditions. The sample was prepared by magnetron sputtering and its reflectance measured in the photon energy range of interest with synchrotron radiation.
Philippe Jonnard, Jean‐Michel André, Karine Le Guen, Nawel Temmar, Anthony Boucly, Nicolas Rividi, Wanqiu Bai, Angelo Giglia, Nicola Mahne, Sheng Guo, Jingtao Zhu   +10 more
wiley   +1 more source

Discovery of a heavy silicon isotope mantle reservoir. [PDF]

Natl Sci Rev
Liu MR, Wang J, Cui ZX, Wei GJ, Yang Q, Xu YG, Kerr AC, Wyman D, Bai JH, Zhu GH, Ma L, Hao LL, Zhou JS, Fan JJ, Huang TY, Zhang MY, Wang Q.   +16 more
europepmc   +1 more source

Integration of Micro‐CT and XRF Mapping for Multimodal 3D Analysis of Polychrome Wooden Artifacts

X-Ray Spectrometry, EarlyView.
ABSTRACT Over the past 5 years, computer applications have become crucial to archeological research. Since the 1990s, the focus has transitioned from data management tools to the development of virtual models. Recently, digital documentation of cultural heritage has gained considerable focus, with 3D modeling of objects.
Josiane E. Cavalcante, Olga Araujo, Alessandra Machado, Roberta M. P. S. Borges, Isis V. N. S. Franzi, Anderson G. de Paula, Roberta Leitão, Marcelino dos Anjos, Renato Freitas, Ricardo T. Lopes, Davi F. Oliveira   +10 more
wiley   +1 more source

Gold geochemical anomalies delineated by the stratigraphic zoning anomaly lower limit contrast method: a case study of panjiaba, Shaanxi province, China. [PDF]

Sci Rep
Yuekun W, Shaolei K, Jin L, Shangqi L, Chaoran D.   +4 more
europepmc   +1 more source