Results 31 to 40 of about 81,222 (227)

Reframing the Fields [PDF]

open access: yes, 2004
The conception of metaphoric process elaborated by Mary Gerhart and Allan Russell illuminates a key mechanism often involved in the most significant advances in science and religion.
Burrell David   +6 more
core   +2 more sources

A comparative study of resource allocation in Pteridium in different Brazilian ecosystems and its relationship with European studies

open access: yesBrazilian Journal of Biology
Pteridium is a cosmopolitan genus that acts as an invasive species in many parts of the world. Most research on this genus has occurred in Europe, and there is a lack of data on it from South America, in spite of causing considerable conservation ...
DM Silva Matos   +3 more
doaj   +1 more source

The role of Pteridium arachnoideum(Kaulf) on the seed bank of the endangered Brazilian Cerrado

open access: yesBrazilian Journal of Biology
The native bracken (Pteridium arachnoideum) often occurs in mono-specific stands in the Brazilian Cerrado, and this dominance can impact on both the above-ground vegetation and soil seed bank.
R. O. Xavier   +3 more
doaj   +1 more source

Fate of ptaquiloside-A bracken fern toxin-In cattle.

open access: yesPLoS ONE, 2019
Ptaquiloside is a natural toxin present in bracken ferns (Pteridium sp.). Cattle ingesting bracken may develop bladder tumours and excrete genotoxins in meat and milk.
Paulo César Dos Reis Aranha   +5 more
doaj   +1 more source

On the Fourier Spectra of the Infinite Families of Quadratic APN Functions [PDF]

open access: yes, 2008
It is well known that a quadratic function defined on a finite field of odd degree is almost bent (AB) if and only if it is almost perfect nonlinear (APN).
Bracken, Carl, Zha, Zhengbang
core   +3 more sources

Alterações anátomo-histopatológicas em ratos submetidos à dieta com extrato de broto de samambaia (Pteridium aquilinum var. arachnoideum) de dois municípios do estado do Paraná Macroscopic and microscopic changes in rats fed on a bracken fern diet (Pteridium aquilinum var. arachnoideum) from different regions of Parana State, Brazil

open access: yesArquivo Brasileiro de Medicina Veterinária e Zootecnia, 2005
The carcinogenicity of bracken fern harvest from two regions of Paraná State to induce hematury in rats was studied. In order to do that, 33 Wistar rats were divided in three groups.
G.D. Cruz   +3 more
doaj   +1 more source

Ultrafast and accurate 16S rRNA microbial community analysis using Kraken 2

open access: yesMicrobiome, 2020
Background For decades, 16S ribosomal RNA sequencing has been the primary means for identifying the bacterial species present in a sample with unknown composition.
Jennifer Lu, Steven L. Salzberg
doaj   +1 more source

Exogenous preculture with sucrose and abscisic acid improves post-cryopreservation survival of eastern bracken fern gametophytes

open access: yesScientific Reports, 2023
Cryopreservation is an important technique used in the conservation of various plant tissues. This study proposes a cryopreservation method for the long-term conservation of eastern bracken fern gametophytes (Pteridium aquilinum var.
Bo-Kook Jang   +4 more
doaj   +1 more source

The Gut Commensal Butyricimonas Virosa Modulates Gut Microbiota‐Dependent Thiamine Metabolism and Attenuates Mouse Steatotic Liver Disease

open access: yesAdvanced Science, EarlyView.
This study reveals that dietary stachyose enriches Butyricimonas virosa, effectively attenuating metabolic dysfunction‐associated steatotic liver disease (MASLD). Mechanistically, B. virosa enhances gut thiamine monophosphate synthesis, which elevates hepatic thiamine pyrophosphate levels.
Ningning He   +17 more
wiley   +1 more source

Pathomorphological and immunohistochemical studies of tumours in the urinary bladders of water buffalo in marmara, the central and western black sea region of turkey [PDF]

open access: yesKafkas Universitesi Veteriner Fakültesi Dergisi, 2017
In this study, non-neoplastic and neoplastic lesions in the urinary bladders of water buffalo were determined in the Marmara, the central and western part of the Black Sea region of Turkey.
YÜCEL TENEKECİ G   +4 more
doaj   +1 more source

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