86 research outputs found
Effect of halogenless flame retardants on the thermal properties, flammability, and fire hazard of cross-linked EVM/NBR rubber blends
Fatty Acids Analysis Using Gas Chromatography-Mass Spectrometer Detector (GC/MSD) - Method Validation Based on Berry Seed Extract Samples
Hydrogenation of Acetophenone in the Presence of Ru Catalysts Supported on Amine Groups Functionalized Polymer
Amorphous and ordered organosilicas functionalized with amine groups as sorbents of platinum (II) ions
Microstructure and Phase Constitution Near the Interface of Explosively Welded Aluminum/Copper Plates
Formation of a quasicrystalline phase in Al–Mn base alloys cast at intermediate cooling rates
Reactive oxygen species and male reproductive hormones
Reports of the increasing incidence of male infertility paired with decreasing semen quality have triggered studies
on the effects of lifestyle and environmental factors on the male reproductive potential. There are numerous exogenous
and endogenous factors that are able to induce excessive production of reactive oxygen species (ROS) beyond that of
cellular antioxidant capacity, thus causing oxidative stress. In turn, oxidative stress negatively affects male reproductive
functions and may induce infertility either directly or indirectly by affecting the hypothalamus-pituitary-gonadal (HPG)
axis and/or disrupting its crosstalk with other hormonal axes. This review discusses the important exogenous and
endogenous factors leading to the generation of ROS in different parts of the male reproductive tract. It also highlights
the negative impact of oxidative stress on the regulation and cross-talk between the reproductive hormones. It further
describes the mechanism of ROS-induced derangement of male reproductive hormonal profiles that could ultimately
lead to male infertility. An understanding of the disruptive effects of ROS on male reproductive hormones would
encourage further investigations directed towards the prevention of ROS-mediated hormonal imbalances, which in turn
could help in the management of male infertility
Life-course perspective and the ageing of the workforce in the context of public policy
Przemiany demograficzne społeczeństw europejskich wpływają na starzenie się pracowników i zmiany ich ścieżek zawodowych. Państwa członkowskie oraz agencje unijne podejmują działania przeciwdziałające negatywnym konsekwencjom starzenia się siły roboczej. Artykuł ma na celu odpowiedź na pytanie o znaczenie i stosowanie perspektywy cyklu życia w praktyce działań agencji unijnych. W pierwszej części zarysowany jest problem starzenia się pracowników. Następnie zaprezentowano perspektywę cyklu życia jako koncepcję teoretyczny z zakresu polityki społecznej oraz jego odniesienie do starzenia się. W kolejnej części omówiono umocowanie prawne, programowe i działania podejmowane przez cztery agencje Unii Europejskiej, mające w swoich kompetencjach dziedziny związane ze starzeniem się pracowników. W podsumowaniu przewiduje się przyszłe trendy rozwoju polityki wobec tych zjawisk i formułuje argumenty na rzecz konieczności ich holistycznego ujęcia.Demographic changes in European societies influence the ageing of the workforce and changes in career paths of workers in the European Union. Member States and EU agencies take various actions to counteract the negative consequences of the ageing of the workforce. This article discusses the importance and practical application of the life-course perspective in the activities of EU agencies. Its first part outlines the problem of the ageing of the workforce Next, the article presents the life-course perspective as a theoretical concept in social policy and its relevance to the concept of ageing. Then, the article describes the legal basis, the programme and the activities undertaken by four EU agencies. The summary predicts future trends in public policies towards the ageing of the workforce together with arguments in favour of the need for a holistic approach
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