Iskanje po katalogu digitalne knjižnice

Opis: The paper focuses on providing basic characteristics of income inequality in a group of selected European countries in the period from 2000 to 2019. After presenting stylized facts and brief literature review, the paper proceeds to empirical analysis of income inequality in the observed countries by panel data techniques. Fixed and random effects models are estimated. After Hausman test approved the usage of fixed effects model, it was tested for serial correlation and robust standard errors were calculated. The empirical analysis of the determinants of income inequality shows that GDP growth, share of population in upper 10% of income percentile, Human Development Index and unemployment rate increase income inequality measured by Gini index, while share of workforce and share of population with tertiary education decrease income inequality. The results of the empirical analysis provide insight into determinants of income inequality, which may be useful for economic policy decision makers in their efforts to decrease the income inequality.
Ključne besede: income inequality, Gini index, economic growth, panel analysis, fixed effects model
Objavljeno v DKUM: 30.06.2025; Ogledov: 0; Prenosov: 10
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Opis: This paper aims to explore the economic effects of the COVID-19 pandemic and the war in Ukraine on the twenty-seven European Union (EU) member states, known as the EU-27. A vector autoregression (VAR) of quarterly data for the period 2020–2022 was employed to study the impact of the coronavirus and the Russian invasion of Ukraine on growth, unemployment and inflation in the EU-27. The results from the empirical analysis indicated that the war in Ukraine lowered growth and raised inflation and unemployment, while the COVID-19 pandemic did not affect growth, increased unemployment and decreased inflation in the EU-27. It may be concluded that the war in Ukraine shifted the EU aggregate supply curve to the left, whereas the coronavirus pandemic resulted in inflation-unemployment trade-off in the EU.
Ključne besede: European Union, COVID-19, war in Ukraine, economic effects
Objavljeno v DKUM: 30.05.2025; Ogledov: 0; Prenosov: 8
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Opis: Melipona scutellaris is a Brazilian stingless bee that is important for pollinating wild flora and agriculture crops. Fungicides have been widely used in agriculture, and floral residues can affect forager bees. The goal of our study was to evaluate the effects of sublethal concentrations of pyraclostrobin on the midgut ultrastructure of M. scutellaris forager workers. The bees were collected from three non-parental colonies and kept under laboratory conditions. The bees were orally exposed continuously for five days to pyraclostrobin in syrup at concentrations of 0.125 ng a.i./µL (FG1) and 0.005 ng a.i./µL (FG2). The control bees (CTL) were fed a no-fungicide sucrose solution, and the acetone solvent control bees (CAC) received a sucrose solution containing acetone. At the end of the exposure, the midguts were sampled, fixed in Karnovsky solution, and routinely processed for transmission electron microscopy. Ultrastructural analysis demonstrated that both the fungicide concentrations altered the midgut, such as cytoplasmic vacuolization (more intense in FG1), the presence of an atypical nuclear morphology, and slightly dilated mitochondrial cristae in the bees from the FG1 and FG2 groups (both more intense in FG1). Additionally, there was an alteration in the ultrastructure of the spherocrystals (FG1), which could be the result of cellular metabolism impairment and the excretion of toxic metabolites in the digestive cells as a response to fungicide exposure. The results indicate that ingested pyraclostrobin induced cytotoxic effects in the midgut of native stingless bees. These cellular ultrastructural responses of the midgut are a prelude to a reduced survival rate, as observed in previous studies.
Ključne besede: digestive tract, Meliponini, mitochondria, morphology, strobilurin, sublethal effects
Objavljeno v DKUM: 07.04.2025; Ogledov: 0; Prenosov: 7
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Opis: Helichrysum italicum (family Asteraceae), due to its various beneficial health effects, represents an important plant in the traditional medicine of Mediterranean countries. Currently, there is a renewed interest in this medicinal plant, especially in investigations involving the isolation and identification of its bioactive compounds from extracts and essential oils, as well as in experimental validation of their pharmacological activities. In this paper, we review the current knowledge on the beneficial health effects of Helichrysum italicum extracts, essential oils, and their major bioactive polyphenolic compounds, ranging from antioxidative, anti-inflammatory, and anticarcinogenic activities to their antiviral, antimicrobial, insecticidal, and antiparasitic effects. This review also provides an overview of the most promising extraction and distillation techniques for obtaining high-quality extracts and essential oils from Helichrysum italicum, as well as methods for determining their antioxidative, antimicrobial, anti-inflammatory, and anticarcinogenic activities. Finally, new ideas for in silico studies of molecular mechanisms of bioactive polyphenols from Helichrysum italicum, together with novel suggestions for their improved bioavailability through diverse encapsulation techniques, are introduced.
Ključne besede: Helichrysum italicum, polyphenolic compounds, biological effects, extraction methods, distillation methods, encapsulation methods
Objavljeno v DKUM: 15.03.2024; Ogledov: 327; Prenosov: 21
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Opis: The paper studies the effects of foreign (the US, the UK and the Chinese) and domestic economic policy uncertainty (EPU) shocks on unemployment in Germany, France, Italy and Spain. The analysis is run separately for the rates of adult and youth unemployment. Impulse responses derived from vector autoregressive models show that the magnitudes of the responses of the adult and youth segments of the labour market are quite different. Following an uncertainty shock, the youth unemployment rate increases significantly more than the adult unemployment rate. This is the case for France, Italy and Spain. The German labour market seems to be resistant to foreign (except Chinese) and domestic EPU shocks, while the remaining labour markets, foremost the Spanish and Italian ones, are susceptible to uncertainty shocks, especially to the US EPU shocks.
Ključne besede: economic policy uncertainty, youth unemployment, adult unemployment, spillover effects, impulse responses
Objavljeno v DKUM: 26.09.2023; Ogledov: 370; Prenosov: 50
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