128 Results Found

Poppers are legal and largely used in France despite severe side effects, such as methaemoglobinaemia (MetHbia). Our work aimed to assess the prevalence of poppers consumers among patients with a MetHbia higher than or equal to 5% in French universit...

Background/Objectives: Alkyl nitrites are a class of inhalant, commonly known as ‘poppers’. Although having medical uses, some other effects include a ‘rush’, ‘high’, ‘euphoria’, or feeling of excitemen...

Alkyl nitrites (“poppers”) are a diverse class of volatile chemical compounds with a varied legal and medical history. Though once commonly prescribed to treat angina, popper use is now almost exclusively recreational. Currently, poppers...

A family of Ruddlesden–Popper (n = 1) layered perovskite-related phases, Az₂PbCl_xBr_4−x with composition 0 ≤ x ≤ 4 were obtained using mechanosynthesis. These compounds are isostructural with K₂NiF₄ and therefore adopt the idealised n = 1 Ruddlesden–P...

Objectives: we aim to assess the contribution of the EarPopper device to hearing in children with middle ear effusion (MEE). Methods: The study has three parts, including 1. tympanometry and audiometry before and six weeks after using the EarPopper t...

The use of ferroelectric materials for light-harvesting applications is a possible solution for increasing the efficiency of solar cells and photoelectrocatalytic devices. In this work, we establish a fully autonomous computational workflow to identi...

Discovering new energy materials is a key step toward satisfying the needs for next-generation energy conversion and storage devices. Among the various types of oxides, Ruddlesden–Popper (RP) oxides (A₂BO₄) are promising candidates for electrochemica...

For the first time, the possibility of obtaining B-site disordered, Ruddlesden–Popper type, high-entropy oxides has been proven, using as an example the LnSr(Co,Fe,Ga,Mn,Ni)O₄ series (Ln = La, Pr, Nd, Sm, or Gd). The materials were synthesized...

Layered A_n+1B_nO_3n+1 (n = 1…∞) Ruddlesden–Popper (RP) phases are a promising system for a variety of applications. Within the RP family, the thermodynamic properties of the phases are essentially additive with variation in the n val...

The intrinsic chaotic phase distribution in Ruddlesden-Popper Perovskite (RPP) hinders its further improvement of photoluminescence (PL) emission and limits its application in optical devices. In this work, we achieve the phase distribution regulatio...

On the basis of Karl Popper’s Three Worlds Theory, a theoretical approach to landscape can be derived, which includes the physical foundations of landscape (Landscape 1), the individual construction and emotions drawn from and placed upon lands...

The NdNiO₃ (NNO) system has attracted a considerable amount of attention owing to the discovery of superconductivity in Nd_0.8Sr_0.2NiO₂. In rare-earth nickelates, Ruddlesden–Popper (RP) faults play a significant role in functional properties, mo...

The lattice dynamics of tetragonal Sr₂VO₄ with a Ruddlesden—Popper-layered crystal structure was studied via Raman spectroscopy. We observed three of the four expected Raman-active modes under ambient conditions. Mode Grüneisen parameters...

The work focused on the layered perovskite-related materials as the potential electrolytic components of such devices as proton conducting solid oxide fuel cells for the area of clean energy. The two-layered perovskite BaLa₂In₂O₇ with the Ruddlesden&...

Sr₂TiO₄, a prominent member of the Ruddlesden–Popper (RP) perovskite family, has garnered significant interest in photocatalysis, primarily owing to its distinctive two-dimensional (2D) layered structure. In this review, we provide an insightfu...

This study presents comprehensive DFT calculations to determine the structural, electronic, mechanical, and optical properties of the Ruddlesden–Popper Phase family member, La₂XO₄, which has an orthorhombic crystal structure with a Cmce space g...

Ultrathin inorganic halogenated perovskites have attracted attention owing to their excellent photoelectric properties. In this work, we designed two types of Ruddlesden–Popper hybrid perovskites, Cs_n+1Sn_nBr_3n+1 and Cs_nSn_n+1Br_3n+2, and studied their...

Various types of 2D organic–inorganic perovskite solar cells have been developed and investigated due to better electron transport behavior and environmental stability. Controlling the formation of phases in the 2D perovskite films has been con...

Hydrogen (H₂) is regarded as a promising and renewable energy carrier to achieve a sustainable future. Among the various H₂ production routes, photocatalytic water splitting has received particular interest; it strongly relies on the optical and stru...

The new phases BaLa_0.9M_0.1InO_3.95 (M = Ca²⁺, Sr²⁺, Ba²⁺) with a Ruddlesden-Popper structure were obtained. It was established that all investigated samples were capable for the water uptake from the gas phase. The ability of water incorporation was d...

Compounds Sr_3−xPr_xFe_1.25Ni_0.75O_7−δ with 0 ≤ x ≤ 0.4 and Ruddlesden–Popper n = 2 type structures were synthesized and investigated by X-ray and neutron powder diffraction, thermogravimetry, and Mössbauer spectroscopy...

Using reduced-dimensional halide perovskites is emerging as a promising strategy for enhancing the stability of optoelectronic devices such as solar cells, even if their performances remain a step below those of the 3D halide perovskites. Two-dimensi...

The target of this work is to develop advanced electrode materials with excellent performance compared to conventional cathodes. Cobalt-free Ruddlesden−Popper oxides Sr₃Fe_2−xCu_xO_7−δ (SFCx, x = 0, 0.1, 0.2) were successfully synthesized and assessed a...

The present work explores the possibility of incorporation of silicon into the crystal structure of Ruddlesden-Popper La₂NiO_4+δ mixed conducting ceramics with the aim to improve the chemical compatibility with lanthanum silicate-based solid ele...

In this paper, the review of the new class of ionic conductors was made. For the last several years, the layered perovskites with Ruddlesden-Popper structure A^IILnInO₄ attracted attention from the point of view of possibility of the realization of io...

Ruddlesden–Popper (RP) transition-metal oxide phases with the general formula A_n+1B_nO_3n+1 are versatile functional materials that can accommodate a large variety of compositions without compromising structural stability. Substitutions at the A...

Contemporary systems painting directly engages with the material of contemporary culture, not necessarily the technological substrates of computation, social media, the Internet, and artificial intelligence, but the concept of the algorithm and the c...

Sluggish oxygen reduction reaction (ORR) remains a critical barrier to advancing intermediate-temperature electrochemical energy devices. Here, we demonstrate that strain engineering in two platforms, epitaxial thin films and freestanding membranes,...

The significance of play in the construction of landscape involving the feedback relationships between social conventions and the individual and between the individual and physical space, contrastingly, has so far received only little scientific atte...

This paper addresses the social resonances to the complex causes, effects, and feedback of land loss in southern Louisiana, particularly with respect to the region’s vulnerability to the impacts of anthropogenic climate change, especially again...

In this work, evidence of isothermal magnetic entropy change ($∆S_M$) over a broad temperature region is presented in a series of La_1.4Sr_1.6Mn_2−xNb_xO₇ Ruddlesden–Popper compounds with niobium modification (Nb) (0.0 ≤ x ≤ 0.15) at...

Achieving the fast oxygen reduction reaction (ORR) kinetics at the cathode of solid oxide fuel cells (SOFCs) is indispensable to enhance the efficiency of SOFCs at intermediate temperatures. Mixed ionic and electronic conducting (MIEC) oxides such as...

Catalysts with a Ruddlesden–Popper structure (LaSrFeO₄, La_0.5Sr_1.5FeO₄, and La_1.5Sr_0.5FeO₄) were successfully synthesized and tested for the complete oxidation of C₁–C₄ hydrocarbons (methane, ethane, propane, and n-butane) as representati...

The design of new oxide compounds that can be used as oxygen- or proton-conducting electrolytes for solid oxide fuel cells is actively in progress. Despite the intensive research activities regarding electrolytes with perovskite/fluorite structures,...

Inorganic materials with layered perovskite structures have a wide range of physical and chemical properties. Layered perovskites based on BaLa_nIn_nO_3n+1 (n = 1, 2) were recently investigated as protonic conductors. This work focused on the oxygen ion...

Considerable attention has been directed to understanding the influence of heterointerfaces between Ruddlesden–Popper (RP) phases and ABO₃ perovskites on the kinetics of oxygen electrocatalysis at elevated temperatures. Here, we report the effect of...

An improved understanding of the correlation between the electronic properties of Mn-O bonds, activity and stability of electro-catalysts for the oxygen evolution reaction (OER) is of great importance for an improved catalyst design. Here, an in-dept...

Ruddlesden–Popper type electrodes with composition La₂CuO_4−δ are alternative cathode materials for solid oxide fuel cells (SOFCs); however, the undoped compound exhibits low electrical conductivity for potential applications, which...

Layered Ruddlesden-Popper (RP) lanthanide nickelates, Ln_n+1Ni_nO_3n+1 (Ln = La, Pr, and Nd; n = 1, 2, and 3) have generated great interest as potential cathodes for proton conducting fuel cells (PCFCs). The high-order phase (n = 3) is especially intrig...

Double oxides with the structure of the Ruddlesden–Popper (R-P) layered perovskite A_n+1B_nO_3n+1 attract attention as materials for various electrochemical devices, selective oxygen-permeable ceramic membranes, and catalytic oxidative reactions....

Two-dimensional lead halide perovskites are of significant interest for a variety of practical applications. However, the relationships between their composition and properties are not fully clear. Here we investigated photoluminescence from 2D Ruddl...

This work focuses on the validation of a possible connection of the known Ruddlesden-Popper (RP) phases and the novel concept of the migration-induced field-stabilized polar (MFP) phase. To study this subject, model structures of RP phases in bulk st...

We report on the use of 2D Ruddlesden–Popper (RP) perovskites as optoelectronic materials in building-integrated applications, addressing the challenge of balancing transparency, photoluminescence, and stability. With the addition of polyvinylp...

Cardiac surgery constitutes a significant surgical insult in a patient population that is often marred by significant comorbidities, including frailty and reduced physiological reserve. Prehabilitation programs seek to improve patient outcomes and re...

Understanding pathophysiological causes of constipation is worthwhile in directing therapy and improving symptoms. This review aims to identify and fill gaps in the understanding of the pathophysiology of constipation, understand its prevalence, revi...

The Ross procedure introduced a new technique for aortic valve replacement by utilizing a pulmonary autograft to replace the diseased aortic valve. This approach provides a living, dynamic valve substitute capable of growth and adaptation to systemic...

Tricuspid atresia (TA) is a cyanotic congenital heart defect defined by agenesis of the tricuspid valve and resultant right ventricular hypoplasia, representing 1.4–2.9% of congenital heart disease. Survival depends on interatrial and intervent...

Quantized conduction achieved in layered materials offers a wide range of applications in electronics. A comprehensive analysis of electronic properties of Sr₂ZrO₄/TiN- and Sr₂ZrO₄/TaN-layered heterostructure is carried out using plane wave-based fir...

This work studied the phase constitution, bond characteristics, and microwave dielectric performances of Sr₂TiO₄ ceramics. Based on XRD and Rietveld refinement analysis, pure tetragonal Ruddlesden–Popper type Sr₂TiO₄ ceramic is synthesized at 1...

In this review, we provide a survey of the application of advanced first-principle methods on the theoretical modeling and understanding of novel electronic, optical, and magnetic properties of the spin-orbit coupled Ruddlesden–Popper series of irida...