Results 51 to 60 of about 4,091 (207)

How many species of fossil arachnids are there? [PDF]

open access: yes, 2008
The species-level diversity of fossil Chelicerata is summarized for each order. 1952 valid species of fossil\ud chelicerates are currently recognized, of which 1593 are arachnids.
Anderson, L. I.   +3 more
core   +1 more source

Modifying Antibiotic Activity of Synthetic Thiadiazine Analogs Against MDR Bacteria and ADMET Analysis

open access: yesChemistryOpen, EarlyView.
The study demonstrated that thidiazine compounds potentiated the action of antibiotics. The compounds associated with norfloxacin against S. aureus showed greater significance in relation to the other medications. The indiscriminate use of antibiotics has led to the selection of resistant bacterial strains, significantly reducing the effectiveness of ...
João Arthur de Oliveira Borges   +15 more
wiley   +1 more source

Geometric Morphometrics Reveal Body Shape Variation in Freshwater Shrimps of the Genus Macrobrachium Lacking a Mandibular Palp (Formerly Pseudopalaemon Sollaud, 1911) (Decapoda: Palaemonidae)

open access: yesActa Zoologica, EarlyView.
ABSTRACT Shape variation in the cephalothorax of Macrobrachium species without mandibular palp using geometric morphometrics was used as a tool to support species differentiation and propose new diagnostic characters for taxonomic identification.
Thaís Arrais Mota   +4 more
wiley   +1 more source

Pilot Study on Fingerprinting the Isotopic Signatures of Fossiliferous Limestones as a Tool for Forensic Investigation of Fossil Trafficking (Cretaceous Crato Formation, Brazil)

open access: yesGeosciences
Unauthorized fossil trafficking violates national legislation and deprives cultural and natural heritage. This study proposes a pilot method to fingerprint the origin of fossils by characterizing the carbon and oxygen stable isotope signatures of fossil ...
Marcos Antônio Pimentel de Sousa   +3 more
doaj   +1 more source

Contrasting Approaches in the Implementation of GRADE Methodology in Guidelines for Haemophilia and Von Willebrand Disease

open access: yesHaemophilia, EarlyView.
ABSTRACT Introduction The 2024 ISTH clinical practice guideline (CPG) for treatment of congenital haemophilia, the NBDF‐McMaster Guideline on Care Models for Haemophilia Management, and ASH ISTH NBDF WFH guidelines on the diagnosis and management of VWD all utilised GRADE methodology.
Mark W. Skinner   +59 more
wiley   +1 more source

First Eumastacoidea and new Locustopsidae (Orthoptera: Caelifera) from the Crato Formation of Brazil [PDF]

open access: yesContributions to Entomology
The first genus and species of Eumastacoidea from the Lower Cretaceous Crato Formation of northeastern Brazil is described. Cratomastax mariellaae gen. et sp. nov.
Ole-Kristian Odin Schall   +4 more
doaj   +3 more sources

Gymnosperms from the Lower Cretaceous Crato Formation (Brazil). I. Araucariaceae and Lindleycladus (incertae sedis) [PDF]

open access: yesFossil Record, 2004
Fossil conifers from the Early Cretaceous, most likely late Aptian, Crato Formation were studied. The excellent preservation of several of those fossils allowed detailed investigations of the leaf epidermis by light microscope (LM) and by scanning ...
L. Kunzmann   +2 more
doaj   +1 more source

The Species of Isoptera (Insecta) from The Early Cretaceous Crato Formation: A Revision [PDF]

open access: yesAmerican Museum Novitates, 2008
Abstract The termite species from Brazil's Early Cretaceous (Aptian-aged) Crato (Santana) Formation are evaluated on the basis of the degree of character variation seen in modern species, using a series of 56 specimens, scanning electron microscopy of minute structures, and a bivariate plot of the proportional sizes of sclerotized body structures.
David A. Grimaldi   +2 more
openaire   +1 more source

Ximenia americana L. From Popular Use to Anti‐Inflammatory Activities: A Comprehensive Review

open access: yesFood Frontiers, Volume 7, Issue 2, March 2026.
ABSTRACT Ximenia americana (L.), known as “yellow plum,” “sea lemon,” or “Brazilian plum,” is a tropical/subtropical plant widely used in traditional medicine. Its roots, leaves, flowers, stem, and fruits are traditionally employed to treat various inflammatory disorders.
Bruno Anderson F. Silva   +9 more
wiley   +1 more source

Dominance of Ricinus communis in the Semi‐Arid Region Mediated by Allelopathy

open access: yesWeed Research, Volume 66, Issue 2, March/April 2026.
ABSTRACT The introduction of invasive alien species can adversely affect the functioning of natural ecosystems. Ricinus communis L., widely present in the Brazilian semi‐arid region, establishes itself in areas with native species, such as Handroanthus impetiginosus (Mart.
Bruno M. Alcântara   +7 more
wiley   +1 more source

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