Results 31 to 40 of about 1,635 (177)

An arbuscular mycorrhiza from the 407‐million‐year‐old Windyfield Chert identified through advanced fluorescence and Raman imaging

open access: yesNew Phytologist, Volume 249, Issue 1, Page 448-459, January 2026.
Summary Mycorrhizal associations between fungi and plants are a fundamental aspect of terrestrial ecosystems. Mycorrhizas occur in c. 85% of extant plants, yet their geological record remains sparse. Rare fossil evidence from early terrestrial environments offers crucial insights into these ancient symbioses, but visualizing fossil fungi at the ...
Christine Strullu‐Derrien   +7 more
wiley   +1 more source

EPR and Fluorescence Spectroscopy in the Photodegradation Study of Arabian and Colombian Crude Oils

open access: yesInternational Journal of Photoenergy, Volume 2006, Issue 1, 2006., 2006
EPR and fluorescence spectroscopy were used to evaluate the degradation of crude oils of different origins that were submitted to photochemical weathering under tropical conditions. The EPR spectra obtained showed signals of the paramagnetic species: the vanadyl VO2+ ion and organic free radicals.
Carmen L. B. Guedes   +6 more
wiley   +1 more source

Effects of the Cinarcik - Ismit August 17, 1999 earthquake on the composition of thermal and mineral waters as revealed by chemical and isotope investigations

open access: yesGeofísica Internacional, 2002
Se presentan los efectos del sismo Ismit ocurrido el 17 de agosto de 1999 sobre los cambios en la composición química de aguas termales y minerales en las zonas más afectadas de (1) Kuzuluk, (2) Bursa, y (3) Yalova/Gemlik en la zona de fallas “North ...
W. Balderer   +4 more
doaj   +1 more source

Vitamin D deficiency induces erectile dysfunction: Role of superoxide and Slpi

open access: yesBritish Journal of Pharmacology, Volume 182, Issue 15, Page 3669-3687, August 2025.
Background and Purpose Epidemiological studies suggest a relationship between vitamin D deficiency and erectile dysfunction (ED). We hypothesized that vitamin D deficiency or vitamin D receptor (VDR) knockout causes ED and analysed the underlying molecular mechanisms.
Miguel A. Olivencia   +14 more
wiley   +1 more source

MINFLUX nanoscopy: Visualising biological matter at the nanoscale level

open access: yesJournal of Microscopy, Volume 298, Issue 2, Page 219-231, May 2025.
Abstract Since its introduction in 2017, MINFLUX nanoscopy has shown that it can visualise fluorescent molecules with an exceptional localisation precision of a few nanometres. In this overview, we provide a brief insight into technical implementations, fluorescent marker developments and biological studies that have been conducted in connection with ...
Alexander Carsten   +2 more
wiley   +1 more source

A 19th Century Stormwrecked Black‐Capped Petrel From Vermont Offers Insight Into Historical Vagrancy Processes

open access: yesEcology and Evolution, Volume 15, Issue 2, February 2025.
Small historical museum collections can provide unexpected data points in telling the story of how climate change has impacted species. We report a (re)discovered Black‐capped Petrel (Pterodroma hasitata) from the 19th‐century Middlebury College Vertebrate Natural History collection and confirmed its late 1800s Vermont origin through a combination of ...
Oliver W. Patrick   +5 more
wiley   +1 more source

Mediciones de presión con el método de fluorescencia del rubí

open access: yesTecnología en Marcha, 2011
Por sus múltiples ventajas, el uso de rubí en mediciones de presión es un tema de amplio interés en la ciencia e ingeniería actual. El procedimiento se basa en la existencia de una relación proporcional entre las condiciones de presión y temperatura ...
Juan Carlos Fallas-Chinchilla   +3 more
doaj  

Evaluation of Optical Properties of Different Restorative Composite Resins

open access: yesRevista da Faculdade de Odontologia de Porto Alegre, 2008
Devido à exigência estética, tem-se buscado materiais restauradores que se aproximem da aparência do dente natural. Para tal, é importante conhecer as propriedades ópticas tanto das estruturas dentais quanto dos materiais restauradores.
Raquel Pachaly   +3 more
doaj   +1 more source

YBX1 Promotes Esophageal Squamous Cell Carcinoma Progression via m5C‐Dependent SMOX mRNA Stabilization

open access: yesAdvanced Science, Volume 11, Issue 20, May 28, 2024.
Liu et al. identify that YBX1, an m5C reader protein, is upregulated in ESCC tissues. Further, YBX1 promotes ESCC progression by stabilizing SMOX mRNA and consequently activating the mTOCR1 signaling pathway in an NSUN2‐mediated m5C modification‐dependent manner.
Liwen Liu   +12 more
wiley   +1 more source

Single‐cell RNA sequencing reveals inflammatory retinal microglia in experimental autoimmune uveitis

open access: yesMedComm, Volume 5, Issue 4, April 2024.
Inflammatory retinal microglia with high expression of Cd74 and Ccl5 are identified at the disease peak of experimental autoimmune uveitis (EAU) by single‐cell RNA sequencing. Targeting Cd74 and Ccl5 effectively alleviated microglial activation and disease phenotype in the EAU model .
Jiangyi Liu   +9 more
wiley   +1 more source

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