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Suaugusiųjų, sergančių onkologinėmis ligomis, psichologinės gerovės ir saviveiksmingumo sąsajos /
No full textPsychological positiveness of cancer patients is closely related to their emotional state. In most cases, it is a negative one and it prevents the patients from seeing life as satisfactory. Majority of people with oncologic diseases feel a strong disbalance between their feelings and the reality of their conditions which is affected by the symptoms and life expectancy. These people have to make significant effort to keep their life balance and to stay self-efficacious. Based on scientific evidence it has been proved that self-efficacy has positive effects on patients’ behaviour, on their wellbeing in general and can even have a positive effect on cancer treatment results. The aim of the study is to identify the connection of psychological wellbeing and self-efficacy in cancer patients. Based on the quantitative study, a connection was discovered between psychological wellbeing and self-efficacy of cancer patients. In order to improve the self-efficacy of oncology patients it is recommended to encourage patients to set life goals, to focus on self growth and self awareness which are the main components of psychological wellbeing
Development and validation of heat release characteristics identification method of diesel engine under operating conditions /
No full textThe decarbonisation of maritime transport in connection with the European Union and International Maritime Organisation directives is mainly associated with renewable and low-carbon fuel use. For optimisation of energy indicators of ship power plants in operation on renewable and low-carbon fuel, it is rational to use numerical research methods. The purpose of this research is to devise methodological solutions for determining the heat release characteristics, m and φz parameters of Wiebe model that can be applied to mathematical models of diesel engines under operating conditions. Innovative solutions are proposed, which in contrast with the methods used in practice, are not related to experimental registration of combustion cycle parameters. These registration techniques were replaced by the proposed exhaust gas temperature or exhaust manifold surface temperature registration method. The acceptable accuracy of results validates the methodological solutions for solving practical tasks: according to the Wiebe model, the error of determining m and φz compared with experimental data does not exceed 3–4%. The proposed method was implemented by simulating the energy indicators of two diesel engines, car engine 1Z 1.9 TDI (Pe = 66 kW; n = 4000 RPM) and multipurpose 8V396TC4 (Pe = 380–600 kW; n = 1850 RPM), in a single-zone model. The variation in experimental data when the engines operated on both diesel and rapeseed methyl ester (a biodiesel fuel), was approximately 1%. The authors anticipate further development of completed solutions with their direct application to ship power plants in real operating conditions
Simple view of reading across the transition from kindergarten to Grade 1 in a transparent orthography /
No full textPurpose: This longitudinal study investigated the simple view of reading (SVR) model and its cognitive basis in a transparent orthography of the Lithuanian across the transition from kindergarten to Grade 1. Method: The language and early literacy skills of 229 children (Mage = 6.79, SD = .47) were tested at the end of kindergarten (vocabulary, letter knowledge, phonological awareness, and RAN); listening comprehension and word reading fluency were tested at the start of Grade 1; and reading comprehension was measured at the end of Grade 1. Results: Together with parental education, word reading fluency and listening comprehension predicted reading comprehension (R2 = 43.2%). The second model, which also included language and early literacy skills, showed that vocabulary and phonological awareness indirectly predicted reading comprehension via listening comprehension, while phonological awareness, letter knowledge, and rapid automatized naming (RAN) indirectly predicted reading comprehension via word reading fluency (R2 = 43.6%). However, after allowing the direct paths from language and early literacy skills in kindergarten to reading comprehension, listening comprehension and word reading fluency were no longer significant predictors of reading comprehension, whereas vocabulary and letter knowledge were (R2 = 58.9%). Conclusion: The results provided support for the SVR model in transparent Lithuanian orthography in that linguistic and decoding components are important for early reading comprehension. However, the results also suggested that, in the Lithuanian context, kindergarten vocabulary and letter knowledge are stronger measures in predicting reading comprehension than listening comprehension and word reading fluency in Grade 1
Cheminiai elementai mūsų aplinkoje: XRF analizės rezultatų panaudos ir tyrimų plėtros galimybės /
No full textComprehensive correlation for the prediction of the heat release characteristics of diesel/CNG mixtures in a single-zone combustion model /
No full textFuel combinations with substantial differences in reactivity, such as diesel/CNG, represent one of the most promising alternative combustion strategies these days. In general, the conversion from diesel to dual-fuel operation can be performed in existing in-use heavy-duty compression-ignition engines with minimum modifications, which guarantee very little particles, less nitrogen oxide (NOx), and reduced noise by half compared to diesel. These factors make it feasible to retrofit a CNG fuel system on an existing diesel engine to operate it in dual fuel mode. However, the single-zone combustion models using the traditional single-Wiebe function are exceptionally adopted to assess the dedicated dual fuel engines, whereas the heat loss to the walls is estimated by using the Woschni heat loss formulation. It means that the fast and preliminary analysis of the unmodified engine performance by 1-zone models becomes complicated due to the obvious deterioration of the energy parameters, which, in turn, was predetermined from the deviation in the thermodynamic cycle variables as the calculation outcome. In this study, the main novelty lies in the fact that we propose a novel composition-considered Woschni correlation for the prediction of the heat release duration characteristics of diesel/CNG mixtures for the unmodified diesel engine. The elimination of former deficiencies distinctive to a single-zone thermodynamic model by applying the interim steps described became the core of the research presented in this paper. It led to successful derivation of the necessary correlation for modelling the heat release duration characteristics of an ICE operated in the dual fuel mode
Investigation of Silurian (Wenlock-Ludlow) deep-marine facies in the Baltic basin through organic-walled microphytoplankton analysis /
No full textImplications of macrophyte distribution patterns in the Curonian Lagoon for monitoring of submerged vegetation in transitional water bodies /
No full textFor the implementation of the Water Framework Directive and the Marine Strategy Framework Directive, nu-merous indicators based on macrophytes have been developed in coastal and shelf zones. However, transitional water bodies (e.g., estuaries, lagoons) have multiple overlaying strong environmental gradients that limit the assessment of the relationships between macrophyte ecological patterns and anthropogenic pressures. The aim of this study was to assess the abundance and distribution of macrophytes in the Curonian Lagoon and to analyze the spatial patterns of macrophyte species considering their morphofunctional properties (i.e., community surface index, which is the sum of the ratios between the specific surface of thallus structure elements and biomass of each macrophyte species in a sampling site) in relation to environmental factors, such as Secchi depth, salinity, wave exposure and area of wetlands. In the estuarine part of the Curonian Lagoon, the sampling of macrophytes was carried out in 2014–2015. Data on hydro-physical parameters were obtained from the water monitoring and hydrological model, while the CORINE data were used for the delineation of wetlands. The species diversity in the studied part of the Curonian Lagoon consisted 12 species (7 of them belong to phylum Chlorophyta and 5 to Magnoliophyta). From dominant algae, Chara contraria and Chara aspera mainly occurred along the northeastern part of the study area, whereas Cladophora glomerata mainly grew as epiphyte along the eastern shore of the lagoon. From dominant angiosperms, Potamogeton perfoliatus and Stuckenia pectinata occurred in the whole study area, while Myriophyllum spicatum rarely formed dense stands and usually was within the stands of charophytes or pondweeds. The salinity was the most important environmental factor, where the relative coverage of Zannichellia palustris, Potamogeton rutilus and all algae species, except Nitellopsis obtusa, correlated with salinity. The Secchi depth was of less importance and correlated with the relative coverage of N. obtusa, while a negative correlation was determined for S. pectinata. The mean community surface index depended on the depth gradient where it was significantly higher at ≤ 1.0 m depth than at 1.1–2.0 m depth. The community surface index significantly negatively correlated (the Spearman rS = −0.65) with the area of wetlands, which surrounded the eastern shore of the study area. Therefore, the tested morphofunctional index has a potential to define the ecological status considering macrophyte communities in the transitional water bodies
Sustainable development solutions: growing and processing raspberries on Lithuanian farms /
No full textThe EU’s goals by 2050 are to ensure food security, prevent bio-diversity loss, and strengthen the EU food system’s resilience. Recent scientific research and the situation in the global market show that the cultivation and processing of raspberries is currently completely unsustainable. This sector is experiencing a huge decline in Lithuania. Therefore, we chose the sustainability of raspberry growing (from farm) and processing (to fork) as an object. The aim of this article was (i) to analyze the raw material of the raspberry plant for product sustainable processing, (ii) to create a digital sustainability measurement model, and (iii) to present sustainable development solutions for effective raspberry growing and processing on Lithuanian farms using content and descriptive methods. This paper discusses how to help small raspberry growers and processors achieve sustainable economic, environmental, and social performance from field raw material to processed products. Analysis of the scientific literature has revealed qualitative and quantitative sustainability indicators for improving raspberry production. The assessment of the sustainability according to our created model revealed the (un)sustainable factors and the current situation in raspberry farms on a Likert scale from very unsustainable to very sustainable. Based on the evaluation we have determined sustainable development solutions. Raspberry growing and processing in Lithuania can contribute to environmental conservation, economic growth, and social well-being, fostering a more sustainable and resilient agricultural sector by investing in R&D, improving productivity, creating employment opportunities and supporting rural communities, establishing a robust waste management system, and embracing renewable energy sources. Raspberry growers and processors can use the digital model we created for the sustainability, efficiency, and development directions of their farm
The concept of cultural landscape of state parks and the concept of change.
No full textProtected areas in Lithuania are established for the protection of natural and man-made complexes and objects, landscape diversity, performance of scientific research and for the monitoring of the environment. The cultural landscapes of state parks represent the diversity of the interaction between man and the natural environment. Just like the entirety of Lithuania, the landscape of state parks is experiencing various tendencies of change. A detailed analysis of natural and social processes, factors of influence, and the scale and consequences of it will determine the change as a whole of cultural landscape. To develop the concept of cultural landscape development in state parks, it is necessary to assess the factors influencing the landscape: the abundance of visitors, physical or aesthetic comfort, the harmony between the architecture and the environment, and the level of protection of tangible and intangible heritage
Evaluation of the effectiveness of renaturalization tools of renaturalized sections of Lithuanian rivers /
No full textMore than 40% of natural riverbeds of Lithuanian rivers have been affected by straightening, in the installation of melioration systems. The solution of gentle renaturalization was chosen and mild renaturalization measures were installed in straightened sections of riverbeds. A detailed assessment of the ecological condition of the renaturalized river sections was carried out according to the physico-chemical, ecological condition, biological (fish index, river macroinverte-brates, river macrophyte indexes) quality elements at 2019–2022. The results of complex studies show the renaturalization measures implemented have the greatest positive effect on the studied parameters in the river with the strongest turbulent flow formed