Results 131 to 140 of about 537,528 (303)

Raman Microscopy at the Organic–Inorganic Interfaces in Human Calcified Aortic Valves Shows the Co‐Existence of Whitlockite Crystals and Carbonated Hydroxyapatite‐Mineralized Collagen Fibrils

open access: yesAdvanced Functional Materials, EarlyView.
This study advances our understanding of aortic valve stenosis by capturing spatially resolved chemical and structural changes at the nanoscale. The findings highlight the potential of combined Raman and electron microscopy for understanding calcification mechanisms across diverse tissue types.
Robin H. M. Van der Meijden   +11 more
wiley   +1 more source

Events and copulas

open access: yesIsogloss
This paper focuses on the study of a particular phenomenon of variation related to the distribution of Spanish copulas: the (in)compatibility of event nouns with predication structures where the copula estar and an evaluative adjective are combined ...
Gonzalo Escribano
doaj   +1 more source

Heterogeneous Productivity Shocks, Elasticity of Substitution and Aggregate Fluctuations [PDF]

open access: yes
We use a Dixit-Stiglitz setting to show that aggregate productivity fluctuations can be generated through changes in the dispersion of firms' productivity.
Alessio, Moro, Rodolfo, Stucchi
core   +1 more source

Depression and the medicalization of sadness: conceptualization and recommended help-seeking [PDF]

open access: yes, 2013
Critiques of the validity of the DSM diagnostic criteria for depressive disorder argue that it fails to differentiate between abnormal sadness due to internal dysfunction or depression (sadness without an identifiable cause), and normal sadness (sadness ...
Durà-Vilà, G, Leavey, G, Littlewood, R
core  

Slight Truncation Changes in Iron Oxide Nanocubes Strongly Affect Their Magnetic Properties

open access: yesAdvanced Functional Materials, EarlyView.
Subtle variations in nanoparticle morphology can lead to significant changes in functional properties. An automated shape‐fitting method captures minor differences in corner truncation between iron oxide nanocubes of similar sizes synthesized under identical conditions, revealing pronounced disparities in their magnetic and hyperthermia behavior ...
Kingsley Poon   +7 more
wiley   +1 more source

The Spanish impersonal se-construction. Constructional variation and change

open access: yesConstructions, 2005
The aim of this paper is to analyze, synchronically and diachronically, aspects of the Spanish impersonal se-construction that have not yet been satisfactorily accounted for in Spanish linguistics.
Johan Pedersen
doaj  

A Surface‐engineered Microfluidic Device for Antibody‐Mediated Negative Selection of High‐Quality Sperm for Assisted Reproduction

open access: yesAdvanced Functional Materials, EarlyView.
This study reports a microfluidic device with a functionalized surface utilizing a polyoxazoline coating and covalently immobilized gold nanoparticles and anti‐phosphatidylserine antibody. The device efficiently eliminates pre‐apoptotic and apoptotic spermatozoa and yields sperm with substantially improved quality and low DNA damage, offering a simple ...
Soraya Rasi Ghaemi   +5 more
wiley   +1 more source

Variation, evolution and the syntax of Afro-Bolivian Spanish gender agreement

open access: yesJournal of Ibero-Romance Creoles, 2010
This paper combines sociolinguistic and formal syntactic approaches to characterize the constraints regulating gender agreement variation across the Determiner Phrase (DP) in Afro-Bolivian Spanish (ABS).
Sandro Sessarego   +1 more
doaj  

Oral corpus of Spanish migrants residing in the city of Seville (Corpus.migra.sev) : construction, encoding, and exploration

open access: yesÉtudes romanes de Brno
Corpus.migra.sev is a computerized corpus consisting of semi-directed interviews, based on a conversational script, conducted with Peruvian, Colombian, Nicaraguan, and Ecuadorian speakers residing in the city of Seville.
Doina Repede
doaj   +1 more source

From Single Atoms to Nanoparticles: Pathways Toward Efficient and Durable Pt/TiO2 Photocatalysts

open access: yesAdvanced Functional Materials, EarlyView.
Platinum single atoms on TiO2 nanosheets evolve into clusters and nanoparticles under ethanol photoreforming and thermal treatments. By controlling deposition and post‐treatments, particle size and location on specific facets are modulated. The study reveals how stability pathways determine efficiency, guiding the design of more durable photocatalysts.
Juan José Delgado   +6 more
wiley   +1 more source

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