Background: () is the predominant malaria species in countries approaching elimination. In the context of climate change, understanding environmental drivers of transmission can guide interventions, yet evidence is limited, particularly in Latin America.
Objectives: We estimated the association between temperature and precipitation and malaria incidence in a malaria elimination setting in Peru.
Parkinson's disease (PD) is a complex neurodegenerative disorder. Recent evidence reveals connections between neuroinflammatory processes and intestinal microbiota alterations in the progression of this pathology. This comprehensive review explores the intricate relationships between them, highlighting their combined impact on PD.
View Article and Find Full Text PDFPyroxenes (AMXO) consisting of infinite one-dimensional edge-sharing MO chains and bridging XO tetrahedra are fertile ground for finding quantum materials. Thus, here, we have studied calcium cobalt germanate (CaCoGeO) and calcium cobalt silicate (CaCoSiO) crystals in depth. Heat capacity data show that the spins in both compounds are dominantly Ising-like, even after being manipulated by high magnetic fields.
View Article and Find Full Text PDFCharge-transfer excitations are of paramount importance for understanding the electronic structure of copper-oxide based high-temperature superconductors. In this study, we investigate the response of a Bi Sr CaCu O crystal to the charge redistribution induced by an infrared ultrashort pulse. Element-selective time-resolved core-level photoelectron spectroscopy with a high energy resolution allows disentangling the dynamics of oxygen ions with different coordination and bonds thanks to their different chemical shifts.
View Article and Find Full Text PDFBackground: Covert atrial fibrillation (AF) is a predominant aetiology of embolic stroke of undetermined source (ESUS). Evidence suggested that AF is more frequently detected by implantable loop recorder (ILR) than by conventional monitoring. However, the predictive factors associated with occult AF detected using ILRs are not well established yet.
View Article and Find Full Text PDFNitrogen-vacancy (NV) centers in diamond are a promising platform for nanoscale NMR sensing. Despite significant progress toward using NV centers to detect and localize nuclear spins down to the single spin level, NV-based spectroscopy of individual, intact, arbitrary target molecules remains elusive. Such sensing requires that target molecules are immobilized within nanometers of NV centers with long spin coherence.
View Article and Find Full Text PDFWe report superconductivity in the full Heusler compound LiPdSi (space group , No. 225) at a critical temperature of = 1.3 K and a normalized heat capacity jump at , Δ/γ = 1.
View Article and Find Full Text PDFSuperconducting states onsetting at moderately high temperatures have been observed in epitaxially stabilized NiO-based thin films. However, recently, it has also been reported that superconductivity at high temperatures is observed in bulk LaNiO at high pressure, opening further possibilities for study. Here we report the reduction profile of LaNiO in a stream of 5% H/Ar gas and the isolation of the metastable intermediate phase LaNiO, which is based on Ni.
View Article and Find Full Text PDFOur study aimed to assess the impact of active packaging with pomegranate peel extract (0.06 mg gallic acid eq./cm) and/or high-pressure treatment (600 MPa, 7 min) on the instrumental color, lipid, and protein oxidation of Iberian dry loins formulated with reduced nitrate/nitrite levels (0, 37.
View Article and Find Full Text PDFvan der Waals materials provide a versatile toolbox for the emergence of new quantum phenomena and fabrication of functional heterostructures. Among them, the trihalide VI stands out for its unique magnetic and structural landscape. Here we investigate the spin and orbital magnetic degrees of freedom in the layered ferromagnet VI by means of temperature-dependent X-ray absorption spectroscopy and X-ray magnetic circular and linear dichroism.
View Article and Find Full Text PDFWe synthesize four novel quasi-one-dimensional organic-inorganic hybrid iron chloride compounds (CHNHFeCl, CH(NH)FeCl, C(NH)FeCl, and CHNFeCl) and characterize their structural and magnetic properties. These materials crystallize in a hexagonal perovskite-type structure, constituting a triangular array of face-sharing iron chloride octahedra chains running along the -axis, isolated from one another by the organic cation. Through magnetization and heat capacity measurements, we find that the intrachain coupling is weakly ferromagnetic for each variant.
View Article and Find Full Text PDFA layered rhombohedral polymorph of indium(III) triiodide is synthesized at high pressure and temperature. The unit cell symmetry and approximate dimensions are determined by single crystal X-ray diffraction. Its 3̄ crystal structure, with = 7.
View Article and Find Full Text PDFMagnetic toroidicity is an uncommon type of magnetic structure in solid-state materials. Here, we experimentally demonstrate that collinear spins in a material with R-3 lattice symmetry can host a significant magnetic toroidicity, even parallel to the ordered spins. Taking advantage of a single crystal sample of CoTeO with an R-3 space group and a Co triangular sublattice, temperature-dependent magnetic, thermodynamic, and neutron diffraction results reveal A-type antiferromagnetic order below 19.
View Article and Find Full Text PDFWe report the synthesis and magnetic characterization of stuffed rare-earth gallium garnets, REGaO (RE = Lu, Yb, Er, Dy, Gd), for up to 0.5. The excess rare-earth ions partly fill the octahedral sites normally fully occupied by Ga, forming disordered pairs of corner-shared face-sharing magnetic tetrahedra.
View Article and Find Full Text PDFInteracting electrons in one dimension (1D) are governed by the Luttinger liquid (LL) theory in which excitations are fractionalized. Can a LL-like state emerge in a 2D system as a stable zero-temperature phase? This question is crucial in the study of non-Fermi liquids. A recent experiment identified twisted bilayer tungsten ditelluride (tWTe) as a 2D host of LL-like physics at a few kelvins.
View Article and Find Full Text PDFWe report the high-pressure synthesis (6 GPa, 1200 °C) and ambient-pressure characterization of hexagonal HP-BaCoO. The material (with a 2H crystal structure) has a short intrachain Co-Co distance of about 2.07 Å.
View Article and Find Full Text PDFAtomic defects in the solid state are a key component of quantum repeater networks for long-distance quantum communication. Recently, there has been significant interest in rare earth ions, in particular Er for its telecom band optical transition that allows long-distance transmission in optical fibres. However, the development of repeater nodes based on rare earth ions has been hampered by optical spectral diffusion, precluding indistinguishable single-photon generation.
View Article and Find Full Text PDFBackground: Mechanical thrombectomy (MT) remains an effective treatment for patients with acute ischemic stroke receiving oral anticoagulation (OAC) and large vessel occlusion (LVO). However, to date, it remains unclear whether MT is safe in patients on treatment with OAC.
Aims: In our study, we performed a propensity-matched analysis to investigate the safety and efficacy of MT in patients with acute ischemic stroke receiving anticoagulants.
A series of garnets of formula ErGaO are described, for which we report the crystal structures for both polycrystalline and single-crystal samples. The limit in the garnet phase is between 0.5 and 0.
View Article and Find Full Text PDFWe report on the far-infrared, temperature-dependent optical properties of a CrI3 transition metal halide single crystal, a van der Waals ferromagnet (FM) with a Curie temperature of 61 K. In addition to the expected phonon modes determined by the crystalline symmetry, the optical reflectance and transmittance spectra of CrI3 single crystals show many other excitations as a function of temperature as a consequence of the combination of a strong lattice anharmonicity and spin-phonon coupling. This complex vibrational spectrum highlights the presence of entangled interactions among the different degrees of freedom in CrI3.
View Article and Find Full Text PDFOver the past decades, superconducting qubits have emerged as one of the leading hardware platforms for realizing a quantum processor. Consequently, researchers have made significant effort to understand the loss channels that limit the coherence times of superconducting qubits. A major source of loss has been attributed to two level systems that are present at the material interfaces.
View Article and Find Full Text PDFNeutral silicon vacancy centers (SiV^{0}) in diamond are promising candidates for quantum applications; however, stabilizing SiV^{0} requires high-purity, boron-doped diamond, which is not a readily available material. Here, we demonstrate an alternative approach via chemical control of the diamond surface. We use low-damage chemical processing and annealing in a hydrogen environment to realize reversible and highly stable charge state tuning in undoped diamond.
View Article and Find Full Text PDFThis study aimed to evaluate a pomegranate peel extract (PPE), selected for its level of phytochemical compounds and antioxidant activities, as a nitrite substitute in dry sausages, as well as its effect on lipid and protein oxidative changes and instrumental colour during the drying period (28 days). Of the extraction solvents screened, water: acetone 3:7 (v/v) was the most effective extraction solvent, yielding extracts with the highest content of phenolic compounds, flavonoids and condensed tannins and antioxidant activities (ABTS, DPPH and FRAP). Four batches of dry sausages were produced with different incoming amounts of sodium nitrite (NaNO) and PPE: 1) 150 ppm NaNO; 2) 0 ppm NaNO; 3) 0 ppm NaNO + 1% PPE (v/w) and 4) 0 ppm NaNO + 2% PPE (v/w).
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