3,978 Results Found

Parmigiano Reggiano is an Italian product with a protected designation of origin (P.D.O.). It is an aged hard cheese made from raw milk. P.D.O. products are protected by European regulations. Approximately 3 million wheels are produced each year, and...

The intrinsic instability of organic electrolytes seriously impedes practical applications of lithium–oxygen (Li-O₂) batteries. Recent studies have shown that the use of high-concentration electrolytes can suppress the decomposition reaction of...

The effect of the botanical origin, pH level and ethanol content of different oenological tannins on the color of malvidin-3-O-monoglucoside solution, including their effectiveness as copigments, was studied. Briefly, a model wine solution (4 g/L of...

The Southern Hunan area is located in the superposition of the Qin-Hang Cu-Pb-Zn polymetallic ore belt and the Nanling W-Sn-Mo polymetallic ore belt, which is an important window to study the mineralization of W-Sn-Mo and Cu-Pb-Zn polymetallic deposi...

Accurately tracing the geographical origin of Zanthoxylum schinifolium Sieb. et Zucc. is important for brand authentication, quality control, and food safety assurance. In this study, the stable isotope ratios (δ¹³C, δ¹⁵N, δ²H, &del...

In recent years, isotopic analysis has been proven a valuable tool for the determination of the origin of various materials. In this article, we studied the ¹⁸O and ¹³C isotopic values of 210 olive oil samples that were originated from different regi...

The evolution of the early atmosphere was driven by changes in its chemical composition, which involved the formation of some critical gases. In this study, we demonstrate that nitrous oxide (N₂O) can be produced from Miller’s early atmosphere...

The mature larva and pupa of Otiorhynchus smreczynskii are described and illustrated with complete chaetotaxy for the first time. Five larval instars and the factors for larval growth are determined, and the larval development of this species is comp...

Melting phase relations of the diamond-forming olivine (Ol)–jadeite (Jd)–diopside (Di)–(Mg, Fe, Ca, Na)-carbonates (Carb)–(C-O-H-fluid) system are studied in experiments at 6.0 GPa in the polythermal Ol₇₄Carb_18.5(C-O-H)_7.5-Omp...

The availability of sensitive analytical methods to detect per- and polyfluoroalkyl substances (PFASs) in food of animal origin is fundamental for monitoring programs to collect data useful for improving risk assessment strategies. The present study...

In this study, Italian industrial hemp (Cannabis sativa L.) intended for food use was isotopically characterized for the first time. The stable isotope ratios of five bioelements were analyzed in different parts of the plant (i.e., roots, stems, infl...

We investigate the origin of ferroelectricity in the BiFeO₃–LaFeO₃ system in rhombohedral R3c and tetragonal P4mm symmetries by ab initio density functional theory calculations and compare their electronic features with paraelectric orthorhombi...

Titanium dioxide nanoparticles (TiO₂ NPs) are widely used in sunscreens, cosmetics and body implants, and this raises toxicity concerns. Although a large number of reports claim that they are safe to use, others claim that they induce reactive oxygen...

Ribose 2′-O-methylation (Nm), a key RNA modification, is catalyzed by diverse 2′-O-methyltransferases (2′-O-MTases), yet the evolutionary trajectories of these enzymes remain poorly studied. Here, with a comprehensive collection of...

Arrays of titania nanotubes (TiO₂NTs) were developed by electrochemical anodization and doped with silver on their surface by photodeposition to achieve TiO₂NTs/Ag. It is found that only anatase TiO₂NTs were formed, with the preferential growth direc...

This paper addressed the effect of post-annealed treatment on the electroluminescence (EL) of an n-ZnO/p-GaN heterojunction light-emitting diode (LED). The bluish light emitted from the 450 °C-annealed LED became reddish as the LED annealed at a temp...

The energy level schema of the ground term of the nickel ion in NiCr${}_2$O${}_4$ was calculated. The parameters of the interaction with the electric field were determined, and the distribution pattern of the electric dipole moments over different positions of...

Yellowfin tuna of the Indian Ocean is overfished, and a better understanding of the stock structure is needed to enable sustainable management. Here, otolith δ¹⁸O values of young-of-the-year fish from known nursery areas of the equatorial Indian Ocea...

The origin of magnetism in wide-gap semiconductors doped with non-ferromagnetic 3d transition metals still remains intriguing. In this article, insights in the magnetic properties of ordered mesoporous Cu-doped SnO₂ powders, prepared by hard-templati...

In order to understand the structure-property relationship, SPR, an energy-partitioning quest for the origin of the barrier to the internal rotation of two iso-structuralmolecules, hydrogen peroxide, H₂O₂, and fluorine peroxide, F₂O₂ is performed. Th...

Crystalline tin oxide has been investigated for industrial applications since the 1970s. Recently, the amorphous phase of tin oxide has been used in thin film transistors (TFTs) and has demonstrated high performance. For large area electronics, TFTs...

In this study, we report the effect of Zr⁴⁺ doping on the optical energy gap and microwave dielectric properties of rutile TiO₂. Rietveld analysis explicitly confirmed that Zr⁴⁺ occupies the octahedral site, forming a single-phase tetragonal structur...

The insight of the activity phase and reaction mechanism is vital for developing high-performance ammonia synthesis electrocatalysts. In this study, the origin of the electronic-dependent activity for the model Cu₂O catalyst toward ammonia electrosyn...

Chrysanthemi Flos ‘Hangbaiju’ (HBJ) is a common Chinese medicinal material with the same origin as the medicinal and edible cognate plant in China, whose quality is seriously affected by the place of origin. In this study, four stable iso...

In this work, from the MgO-enriched residue originated from ludwigite ore, value-added magnesium hydroxide sulfate hydrate (MHSH) whiskers were prepared via sulfuric acid leaching and leachate purification, followed by hydrothermal synthesis. During...

Pacific white shrimp (Litopenaeus vannamei) is a major aquaculture product worldwide. For consumers, discriminating domestic from imported sources of shrimp meat, and individual domestic sources, can be highly desirable because of the different meat...

This study employed stable isotopes of δ¹⁸O and δ²H in conjunction with other hydrological parameters to understand the origin, inferred residence time, and seasonal effect of groundwater in the shallow aquifers of the eastern Dahomey Bas...

In our previous work, epitaxial Ba(Zr_0.2Ti_0.8)O₃ thick films (~1–2 μm) showed an excellent energy storage performance with a large recyclable energy density (~58 J/cc) and a high energy efficiency (~92%), which was attributed to a nanoscale...

Despite potential advantages of metal oxide semiconductors (MOSs)-based gas sensors, the limitation of very high baseline resistance is still unsatisfactory for practical application. By means of element doping, the performance of metal oxide materia...

Food authenticity is becoming increasingly important to consumers, producers, and retailers. Furthermore, more and more food properties considered to be value-relevant are advertised. Food fraud, which is the intentional misrepresentation of a food&r...

While Low Emission Zone (LEZ) enforcement cameras provide a constant stream of traffic data, such resources remain significantly underexploited for urban mobility planning, as their current application is restricted to enforcing vehicle access regula...

Titania-based materials are abundant in technological applications, as well as everyday products; however, many of its structure–property relationships are still unclear. In particular, its surface reactivity on the nanoscale has important cons...

Brines in playas and salt lakes provide crucial raw materials for potassium and lithium products in fertilizers and the energy sector. In this contribution, elemental and multiple H, O, Sr, B, and Li isotopic constraints were employed to determine th...

In order to further understand the shape memory mechanism of a silicon dioxide/shape memory polyurethane (SiO₂/SMPU) composite, the thermodynamic properties and shape memory behaviors of prepared SiO₂/SMPU were characterized. Dynamic changes in the m...

The Balun Mahai Basin (BLMH), located in the northern Qaidam Basin (QB), is endowed with substantial brine resources; however, the genetic mechanisms and potential of these brine resources remain inadequately understood. This study investigated the i...

Cattle are a primary reservoir of enterohemorrhagic Escherichia coli (EHEC) O157:H7. Currently, there are no effective methods of eliminating this important zoonotic pathogen from cattle, and colonization resistance in relation to EHEC O157:H7 in cat...

The Qinxi silver deposit is located in eastern Fujian Province, South China. It is hosted in the late Jurassic Nanyuan volcanic unit and controlled spatially by structural alteration zone. The origins of the deposit are understood poorly. In this stu...

Bi³⁺-doped sesquioxides exhibit dual emissions, marked by distinct Stokes shift and bandwidth, meaning unraveling their underlying origins is particularly intriguing. In this study, we employ first-principles calculations to investigate the luminesce...

The magnetic structure and the origin of band gap opening for Ba₂CuOsO₆ were investigated by exploring the spin exchange interactions and employing the spin–orbit coupling effect. It revealed that the double-perovskite Ba₂CuOsO₆, composed of th...

Dual Radon (²²²Rn) and δ¹⁸O-δ²H isotopes were utilized to (a) detect the origin of water, (b) pinpoint groundwater inflow zones and (c) determine rates of groundwater inflows in an expanding lake in central Ethiopia. The lake area expande...

(Co, Nb) co-doped rutile TiO₂ (CoNTO) nanoparticles with low dopant concentrations were prepared using a wet chemistry method. A pure rutile TiO₂ phase with a dense microstructure and homogeneous dispersion of the dopants was obtained. By co-doping r...

The African swine fever epidemic occurred in Poland at the beginning of 2014 and, up to date, the disease has been spreading mainly in the eastern part of the country. Unexpectedly, in November 2019 an infected wild boar case was confirmed in Lubuski...

Many small-size ore deposits occur in the Lower Paleozoic strata along the ENE-trending imbricate thrust fault in NW Tarim Basin. Based on field investigations and petrographic examinations, sulfur-related deposits mainly occur within the paleo-karst...

This paper discusses the origin and evolution of saline springs in north and central Laos, based on chemical and stable isotopes (δD, δ¹⁸O, δ¹¹B, and δ³⁷Cl). All the saline springs in this study are of the Na–Cl geochemi...

Oxidative stress plays a central role in the development and progression of abdominal aortic aneurysms (AAA), as it severely impairs the function and survival of vascular smooth muscle cells (VSMCs). MitoQ (mitoquinone mesylate), a mitochondria-speci...

Explaining the mechanisms by which fundamental novelties originated in the history of life is a key goal of evolutionary developmental biology (evo-devo). Several attractive systems for study are provided by land plants (embryophytes), a monophyletic...

The multiferroic $\beta$-NaFeO${}_2$ is theoretically investigated for the first time using a microscopic model and Green’s function technique. A small room-temperature ferromagnetism is observed, which could be explained by canting of the antiferrom...

The study of Ba_0.8Sr_0.2TiO₃/LaMnO₃/Ba_0.8Sr_0.2TiO₃ heterostructures on a MgO substrate with Ba_0.8Sr_0.2TiO₃ ferroelectric films revealed the occurrence of a metallic character of the temperature behavior of the resistance at a temperature less than 175...

In the present work, TiO₂/ZnO hybrid nanosponges have been synthesized for the first time. First, TiO₂ nanosponges were obtained by anodization under hydrodynamic conditions in a glycerol/water/NH₄F electrolyte. Next, in order to achieve the anatase...

Low-sulfur single-crystal Ni-base superalloys have demonstrated excellent cyclic oxidation resistance due to improved Al₂O₃ scale adhesion. This derives from preventing deleterious interfacial sulfur segregation that occurs at common ppm levels of S...