Results 81 to 90 of about 1,975 (257)

Bianchi type II, III and V diagonal Einstein metrics re-visited [PDF]

open access: yesGeneral Relativity and Gravitation, 2009
We present, for both minkowskian and euclidean signatures, short derivations of the diagonal Einstein metrics for Bianchi type II, III and V. For the first two cases we show the integrability of the geodesic flow while for the third case a somewhat unusual bifurcation phenomenon takes place: for minkowskian signature elliptic functions are essential in
openaire   +4 more sources

Multifunctional Properties of Wintergreen (Gaultheria procumbens) Essential Oil: Antimicrobial, Antibiofilm, and Insecticidal Effects

open access: yesFlavour and Fragrance Journal, EarlyView.
Unveiling the potential of Wintergreen (Gaultheria procumbens) essential oil. ABSTRACT This study investigated the antimicrobial, antibiofilm, and insecticidal properties of wintergreen (Gaultheria procumbens L.) essential oil (GPEO). The EO was chemically characterized by GC–MS, confirming methyl salicylate as the predominant compound (99.3%).
Miroslava Kačániová   +10 more
wiley   +1 more source

Characterization of Fatty Acid Profiles and Nutritional Quality Indices in Commercial Spreadable Processed Cheeses: Comparative Analysis and Health Implications

open access: yesFood Safety and Health, EarlyView.
Natural processed cheeses showed a more favorable nutritional profile, including higher unsaturated fatty acids and better functional performance. A balanced fatty acid composition was identified as a key factor influencing meltability, oil separation, and overall quality of processed cheeses.
Shaimaa M. Hamdy   +3 more
wiley   +1 more source

LRS Bianchi Type II Massive String Cosmological Models with Magnetic Field in Lyra's Geometry

open access: yesAdvances in Mathematical Physics, 2013
Bianchi type II massive string cosmological models with magnetic field and time dependent gauge function () in the frame work of Lyra's geometry are investigated. The magnetic field is in -plane.
Raj Bali   +2 more
doaj   +1 more source

Bianchi type-III Tsallis holographic dark energy model in Saez–Ballester theory of gravitation

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
In this paper, we have investigated Tsallis holographic dark energy (infrared cutoff is the Hubble radius) in homogeneous and anisotropic Bianchi type-III Universe within the framework of Saez–Ballester scalar–tensor theory of gravitation.
M. Vijaya Santhi, Y. Sobhanbabu
doaj   +1 more source

An Investigation of the Relationship Between Central Bank Unconventional Monetary Policy and Bitcoin Activity

open access: yesInternational Journal of Finance &Economics, EarlyView.
ABSTRACT This article investigates whether the unconventional monetary policy (UMP) measures pursued by the Federal Reserve, the Bank of England, the Bank of Japan, and the European Central Bank since the Global Financial Crisis (GFC) are associated with an appetite for cryptocurrency.
Niamh Wylie, Martha O'Hagan‐Luff
wiley   +1 more source

Explaining Episodes of High Inflation: Demand‐ and Supply‐Side Drivers in Times of Uncertainty

open access: yesInternational Journal of Finance &Economics, EarlyView.
ABSTRACT In this paper, we investigate the extent to which uncertainty anticipates episodes of high inflation in 30 economies worldwide. Our analysis accounts for several factors, including inflation expectations, real global economic activity, and supply chain disruptions.
Maria‐Eleni K. Agoraki   +2 more
wiley   +1 more source

High‐Frequency Instruments With Time‐Varying Reliability: Understanding Identification in Macroeconomics

open access: yesJournal of Applied Econometrics, EarlyView.
ABSTRACT The effects of monetary policy shocks are regularly estimated using high‐frequency surprises in asset prices around central bank meetings as an instrument. These studies, insofar as they explicitly model the relationship between instrument and structural shock, assume a constant relationship between the instrument and the monetary policy shock.
Pooyan Amir‐Ahmadi   +2 more
wiley   +1 more source

Quantum fields in Bianchi type I spacetimes: The Kasner metric [PDF]

open access: yesPhysical Review D, 2018
Vacuum polarization of the quantized massive fields in Bianchi type I spacetime is investigated from the point of view of the adiabatic approximation and the Schwinger-DeWitt method. It is shown that both approaches give the same results that can be used in construction of the trace of the stress-energy tensor of the conformally coupled fields.
openaire   +2 more sources

Health Biomarkers of Pesticide Exposure in Rural Populations of Santa Fe, Argentina: Oxidative Stress and Genotoxicity

open access: yesJournal of Applied Toxicology, EarlyView.
ABSTRACT The present study aimed to quantify pesticide residues in environmental matrices and plasma and to evaluate their potential effects on oxidative stress and DNA damage in rural populations of Santa Fe province. Soil and rainwater samples were collected, and biological samples and semistructured surveys were obtained from volunteers in three ...
María Priscila Dechiara   +4 more
wiley   +1 more source

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