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1.
Time pressure, work-related spousal support seeking, and relationship satisfaction : spillover and crossover effects among dual-earner couples
Sara Tement, Katarina Katja Mihelič, Bettina Kubicek, 2023, izvirni znanstveni članek

Opis: The present study examined how time pressure at work is transmitted to the home domain and how it affects individuals’ (spillover) as well as their partners’ relationship satisfaction (crossover). We examined the role of work-related spousal support seeking and proposed that it serves as a mediator of the spillover as well as the crossover process. We further explored whether the proposed spillover-crossover process is gender-contingent. Using a sample of 308 dual-earner couples, we found support for a positive link between time pressure at work and spousal support seeking. As hypothesized, spousal support seeking served also as a crossover mechanism. However, distinct spillover and crossover processes were found for men and women. These findings not only point to a new spillover and crossover mechanism but also highlight gender-specific patterns in the role of support seeking. As this coping strategy is feasible when job stressors are high, it should be considered a part of stress management trainings and organizational practices.
Ključne besede: spillover, crossover, time pressure, dual-earner couples, work-related spousal support, relationship satisfaction, gender differences
Objavljeno v DKUM: 13.07.2023; Ogledov: 389; Prenosov: 46
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2.
Chemical composition of Juniperus communis L. fruits supercritical CO2 extracts: dependence on pressure and extraction time
Branislava Barjaktarović, Milan Sovilj, Željko Knez, 2005, izvirni znanstveni članek

Opis: Ground fruits of the common juniper (Juniperus communis L), with a particle size range from 0.2500.400 mm, forming a bed of around 20.00 +/- 0.05 g, were extracted with supercritical CO2 at pressures of 80,90, and 100 bars and at a temperature of 40 De. The total amount of extractable substances or global yield (mass of extract/mass of raw material) for the supercritical fluid extraction process varled from 0.65 to 4.00"10 (wt). At each Investigated pressure, supercriticaI CO2 extract fractions collected In successive time intervals over the course of the extraction were analyzed by capillary gas chromatography, using flame ionization (GO-FIO) and mass spectrometric detection (GC-MS). More than 200 constituents were detected In the extracts, and the contents of 50 compounds were reported in the work. Dependence of the percentage yields of monoterpene, sesquiterpene, oxygenated monoterpene, and oxygenated sesquiterpene hydrocarbon groups on the extraction time was investigated, and conditions that favored the yielding of each terpene groups were emphasized. At all pressures, monoterpene hydrocarbons were almost completely extracted from the berries in the first 0.6 h. It was possible to extract oxygenated monoterpenes at 100 bar in 0.5 h and at 90 bar in 1.2 h. Contrary to that, during an extraction period of 4 h at 80 bar, it was possible to extract only 75% of the maximum yielded value of oxygenated monoterpene at 100 bar. Intensive extraction of sesquiterpenes could be by no means avoided at any pressure, but at the beginning of the process (the first 0.5 h) at 80 bar, they were extracted about a and 3 times slower than at 100 and 90 bar, respectively. Oxygenated sesquiterpenes were yielded at fast, constant extraction rates at 100 and 90 bar In 1.2 and 3 h, respectively. This initial fast extraction period was consequently foIlowed by much slower extraction of oxygenated sesquiterpenes.
Ključne besede: chemical processing, high pressure technology, CO2, supercritical fluid extraction, pressure, extraction time, Juniperus communis, oxygenated terpenes, juniper berry oil, carbon dioxide
Objavljeno v DKUM: 01.06.2012; Ogledov: 2177; Prenosov: 56
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