Meklēšana

through the investigation of properties of heavy-metal free organic materials for OLEDs Submitted research findings in reputable scientific journals and presented them at 3 international conferences Future Directions: Based on the outcomes of this project, there are several promising directions for further research and development: Exploration of alternative materials and device architectures to improve efficiency and stability; Investigation of scalable fabrication methods for large-area OLED production; Evaluation of the long-term reliability and environmental impact of the developed OLED devices. We would like to express our gratitude to all project team members, collaborators, and funding agency for their support and contributions throughout the duration of the project. The achievements and knowledge gained through this endeavour will undoubtedly contribute to the advancement of Heavy-metal free organic materials for organic electronics. Project progress 30

-1107. Dokane, K. , Mertena, L., Megre, D. , Kondratovics, U. , 2013. Changes in photosynthetic parameters during graft union and adventitious root formation in cutting grafts of Rhododendron subg. h ymenanthes . Acta Horticulturae, 990: 457–464. Grabovskis, A., Marcinkevics, Z. , Rubins, U., Kviesis-Kipge, E., 2013. Effect of probe contact pressure on the photoplethysmographic assessment of conduit artery stiffness. Journal of Biomedical Optics, 18: 1–7. Grantina-Ievina, L., Andersone, U ., Berkolde-Pīre, D., Nikolajeva, V ., Ievinsh, G. , 2013. Critical tests for determination of microbiological quality and biological activity in commercial vermicompost samples of different origins. Applied Microbiology and Biotechnology, 97: 10541–10554. Grantina-Ievina, L, Minova, S., Rostoks, N. , 2013. Impact of barley ( Hordeum vulgare L.) transgenic line H228.2A on substrate and rhizosphere microorganisms and the possibility of horizontal gene transfer. Zemdirbyste-Agriculture, 100: 425

summer! During all renovation works, the UL Botanical Gardenwill be open to visitors and the usual activities will continue. The Foundation has co-financed the first phase of work in the amount of 213,430 euros. Support for the UL Botanical Gardenenvisages restoration and supplementation of collection and exposition plantings, arrangement of the territory infrastructure in accordance with modern requirements - creating and renovating footpaths, pond footbridges, recreation areas to make the garden an attractive place for the general public. engage in research and education, enjoy exhibitions, concerts and other cultural events. "In many parts of the world, in addition to educational and scientific tasks, botanical gardens also serve as quality recreation, inspiration, spending time with dear people, as a place for cultural events. We have thought about and discussed with each other when passing the Botanical Garden. Cooperation with the University of Latvia is another balanced step

emission intensity quenching along with band broadening here occurred. For the PLD-grown sample (e.g. s4), the expected temperature-dependent PL behaviour was established (energy red-shift, emission broadening and PL intensity quenching with T increased), with peak energy value at 2.8 eV (at low temperature). Comparing the growth techniques and the corresponding PL yield, best optical response was obtained from PLD (2 mV signal), then magnetron sputtering (1 mV), and MOCVD being the worst (0.5 mV). Overall optical response, however was moderate-to-low, as signal to noise ratio is approx. 100:1 for the 1 mV signal. In all of the samples grown using different techniques, excitation-dependent optical investigation showed no emission saturation or E -shift as laser power density (LPD) was increased by 2 orders of magnitude (8-800 kW/cm 2 ). Furthermore, the absence of excitonic feature(s), a high Stokes energy shift, and low values of characteristic k -parameter ( k =0.78 – magnetron

molecular dynamics simulations show that on the defectfree anatase TiO 2 (001) nanotube surface water adsorbs molecularly via weak interactions with the Ti sites and hydrogen bonds to surface oxygens. This binding mode is a consequence of strain-induced curvature effects, as our investigations have shown that neither the nanostructuring by slab thickness reduction nor solvation of thin planar TiO 2 (001) films alters the surface chemistry of the partially dissociated contact layer. The water molecules form a relatively strong hydrogen bond network, both for a buckled monolayer and for a multilayer-like (2 ML) film. While doping with sulfur, at the atom fraction (1/18) studied, weakens the interactions between the surface and water, nitrogen doping renders the surface more reactive to water, with a proton transfer to the surface and the formation of an NH group at the N site taking place in every studied case. At 2 ML coverage, even a second surface-assisted proton transfer takes place within

electric field effects on the activation of the NFAT-SEAP reporter expression system were started. The first version of prototype was fabricated and tested. From the preliminary data we need to improve the resistivity of the contact to the chip electrodes. It will be done soon by improving holder design. Electroporation experiments on a chip is going. 14.09.2022. During this period the experiment was expanded in various areas. The final design of the chip was finished. Additionally, a new experimental chip was developed and fabricated for pH measurement system calibration. Components and electronics for pH sensor were assembled already. New algorithm to enhance the sensitivity of pH sensor was develop after experiment with pH calibration chip. We are working on it now. A new methodology was developed to glue the oxygen sensor and mini-Luer lock. Simultaneously, a lot of experiments with melanoma cancer cell line is going on. The focus is on the electroporation and adhesion experiments

for “First-principles molecular dynamics simulations of layered MoS 2 material” paper was continued. The topic of the article was narrowed to a MoS 2 compound. Additional NpT calculations for MoS 2 compound at 300 K were started. Study of the documentation of the project "A Universal Force Engine for Advanced Molecular Dynamics" ( ipi-code.org ) for path integrals method implementation was started. From January 13th to 24th, there was a mobility to the University of Duisburg-Essen. Activities in framework of the post-doctoral project as well as interesting results obtained in University of Duisburg-Essen, Chair of Theoretical Chemistry during last half-year were discussed on common seminar with participation of Prof. E. Spohr, Dr. S. Kenmoe and PhD student T. Kox The manuscript of the paper „Validation of 2D constrained models for TiO 2 nanotubes over a broad range of diameters” was updated. All remarks about previous version of the paper were taken into account. Results

Chemistry Olympiad, each country's team is selected to participate in the International Chemistry Olympiad. The goals of the Olympiad are also to stimulate the activities of students interested in chemistry by solving chemistry tasks independently and creatively, as well as to promote international contacts in chemistry. This year, Latvia must organize the twentieth - anniversary - Baltic Olympics. The UL Faculty of Chemistry has been chosen as the organizer of the Baltic Olympics in Latvia. Every three years, each of the Baltic States hosts the Baltic Chemistry Olympiad at one of its universities. The project is supported by the patron “Fudeks” (EUR 570). Strengthening the Studies of Anthropology at the UL in 2012 The field of anthropology in Latvia and the UL is new and needs to be strengthened as a resource, promoting the competitiveness of study programs and opening them to capable anthropologists on a European and global scale. UL will not only gain a strong and foreign program

How to apply for exchange studies within bilateral/network cooperation agreements? The selection of the candidates take place at the beginning of each study semester and is organised by the international coordinator of the respective faculty . (Exception: Department of Asian studies select their candidates individually). Candidate shall address to the Mobility Division of the Department for International Cooperation with an already approved and signed nomination form issued by the respective faculty, which is accordingly forwarded to the chosen partner university/network. Student nomination does not guarantee a study exchange place in the chosen partner university/network. For successful processing of application procedure in partner university/network, student shall follow all required procedures and set deadlines. Important! Application requirements for exchange studies abroad may differ from university to university. Majority of bilateral/network cooperation agreements do

research and studies on humic substances. In these fields not only national but also international funding has been obtained and major part of research achievments are. In respect to these field at University of Latvia several international conferences (European Landscape conference, IHSSS Nordic Baltic Chapter conference. 36th Nordic Hydrology conference and others) has been organised with a significant number of participants. Research directions of the staff of environmental science department have been recognized as priority directions of science in Latvia for a period 2006 – 2009 (Climate change) and period 2010 – 2013 (sustainable use of national resources), as well as for period 2018 – 2020 (bioeconomy, sustainable use of natural resources) and thus the staff of Department had a possibility to participate in National Research programs. The capacity and research performance of the staff of the Department of Environmental science is appreciated including the research directions amongst