Meklēšana

ADDRESS: O.Vācieša str. 4, Rīga,Latvija, LV-1004 Phone: +371 26183323, E-Mail: liga.jankevica@lu.lv; exp-biology@inbox.lv HEAD OF LABORATORY: Dr.biol. Līga Jankevica Staff : Dr. biol. I. Salmane, Dr. biol. D. Teļnovs, M. Sc. I. Dubova, student A. Apine Main research topics: Biological control (fundamental and practical aspects) 1) Investigation of the prevalence of functional biodiversity (entomophages, parasitoids, acarophages, entomopathogenic fungi, bacteria, baculoviruses) in agrocenoses; 2) Optimization of biological plant protection methods and development of new biological plant protection preparations to limit the multiplication of the most important agricultural and forestry pests; 3) Isolation of new isolates of virulent entomopathogenic microorganisms, determination of their properties; 4) Development of environmentally friendly phytopreparations (insecticidal and fungicidal properties of various plant extracts, including conifers, as well as plant growth

. Series 93 (2007) 012038 (5 pp). 28. A. Kuzmin, S. Larcheri and F. Rocca. Zn K-edge XANES in nanocrystalline ZnO, J. Phys.: Conf. Series 93 (2007) 012045 (6 pp). 29. E. Pentjuss, V.Eglitis, A. Lusis. “Mecmesin test stand (MultiTest 1-i model) for mechanical testing of PCB”. Latvian Journal of Physics and Technical Sciences, No.5, 2007, p.51-61.30. G. Veveris, V. Eglītis, A. Lusis, D. Erts. Effect of temperature on the micropore sizes in leached NaAlSi glass fibres. Latvian Journal of Physics and Technical Sciences, 2007, No.4, p 63-68.31. J.Kuzmins, A.Gazeikina, M.Lapionoka. „Distance Education technologies in informatics students training". Proceedings of International Conference “Quality of informatics and physics teachers training.”, Russia, Yekaterinburg, April 2007, 63-69.pp.32. J.Kuzmins, L.Kuzmina. Notions based education model. Proceedings of Contemporary Problems of Higher Education. 3.International Conference, Russia, Yekaterinburg, September 2006, 32-40.pp.33. Yu

filiāle, personīgi Maksimam Jegorovam, Modrim Bērzonim, Andim Cirsim, Evitai Knospiņai, Vadimam Sergejevam, Romānam Tarasovam AS „EXIGEN SERVICES LATVIA”, personīgi Ivaram Pukstam, Uldim Smilts, Mārim Āriņam, Guntai Bizikai, Mārim Dancim, Igoram Patrejevam, Imantam Popam, Mārtiņam Popēnam, Jurim Smirnovam, Jurijam Šļamovam, Agrim Šnepstam, Artim Teilānam AS „Latvenergo”, personīgi Ingai Kolai, Aivim Studentam, Jānim Sideram, Ģirtam Vikmanim AS „Latvijas kuģniecība”, personīgi Robertam Kirkupam, Artūram Žurzdinam AS „RĪGAS SILTUMS”, personīgi Birutai Krūzei, Jurim Ozolam AS „SAF TEHNIKA”, personīgi Airai Loitei, Mārtiņam Rudovičam Banku augstskola, personīgi Andrim Sarnovičam, Jānim Innum biedrība „JUNIORU FUTBOLA KLUBS „OLIMPS””, personīgi Raimondam Laizānam, Mārtiņam Meieram Gulbenes novada dome, personīgi Gunai Švikai, Intaram Umbraško IK „DIGITAL TEAM”, personīgi Mārtiņam Doniņam LU aģentūra „Latvijas Universitātes Matemātikas un informātikas institūts (LU

Recherche en Didactique, Éducation et Formation, Osmozes projekta realizācijai. Z.Rubene. Uzsākta partnerība starp LU un Lietišķā menedžmenta augstskolu, Ismaninga, Vācija. Kopīgas doktora studiju programmas “Pedagoģijas zinātne” īstenošanai. Citi sasniegumi: D.Nīmante, L.Daniela, B.Martinsone uzstāšanās ar referātu “The implementation challenges of programs “Support for positive behavior” and “Social emotional development” in children’s home – shelter: experience of Latvia”. L.Daniela kopā ar kolēģiem no Polijas, Portugāles, Rumānijas un UK uzstāšanās ar referātu “Meaningful Time for Professional Growth or a Waste of Time? A Study in Five Countries on Master's Dissertation/Thesis Work” in Teacher Education European Conference of Educational Research (ECER) Annual conference. A. Misseyanni, L. Daniela, M. Lytras, P. Papadopoulou, C. Marouli Uzstāšanās ar referātu “Analyzing Active Learning Strategies in Greece and Latvia: Lessons Learnt and the Way Ahead

Alle, V., Kondratovics, U., Vikmane, M., Osvalde, A., 2019. Cadmium and lead accumulation and anatomical changes in roots of Vicia faba under heavy metal contamination. 19th International Multidisciplinary Scientific GeoConference SGEM 2019, 19(3.2): 71–78. Alle, V. , Osvalde, A., Vikmane, M., Kondratovics, U. , 2019. The effect of cadmium and lead pollution on growth and physiological parameters of field beans ( Vicia faba ). Agronomy Research, 17: 1261-1272 Bahhir, D., Yalgin, C., Ots, L., Järvinen, S., George, J., Naudí, A., Krama, T., Krams, I. , Tamm, M., Andjelković, A., Dufour, E., González de Cózar, J.M., Gerards, M., Parhiala, M., Pamplona, R., Jacobs, H.T., Jõers, P. 2019. Manipulating mtDNA in vivo reprograms metabolism via novel response mechanisms. PLOS Genetics, 15(10), e1008410. Birzina, R. , Cedere, D., Petersone, L., 2019. Factors influencing the first year students’ adaptation to natural science studies in higher education. Journal of Baltic Science

PUBLISHED SCIENTIFIC PAPERS: In journals with SNIP > 1 R1. Š.Svirskas, M.Dunce, E.Birks, A.Sternberg, J.Banys Electromechanical properties of Na 0.5 Bi 0.5 TiO 3 -SrTiO 3 -PbTiO 3 solid solutions J.Phys.Chem.Sol. vol.114, p. 94-99, 2018, doi.org/10.1016/j.jpcs.2017.11.007 R2. E.Birks, M.Dunce, J.Peräntie, J.Hagberg, A.Sternberg. Direct and indirect determination of electrocaloric effect in Na0.5Bi0.5TiO3. J.Appl.Phys.vol.121, p.224102, 2017, doi.org/10.1063/1.4985067 R3. R.Ignatans, M.Dunce, E.Birks, A.Sternberg. Novel octahedral tilt system a+b+c+ in (1-x) Na0.5Bi0.5TiO3-xCdTiO3 solid solutions. J.Mater.Sci. 52, 7149-7157, 2017, DOI 10.1007/s10853-017-0950-8 R4. Birks E., Dunce M., Ignatans R., Kuzmin A., Plaude A., Antonova M., Kundzins K., Sternberg A. Structure and dielectric properties of Na0.5Bi0.5TiO3-CaTiO3 solid solutions. Journal of Applied Physics, vol.119, pp.0741102 (7), 2016, doi.org/10.1063/1.4942221 R5. Dimza V., Popov A.I., Lace L., Kundzins M., Kundzins K.,

of Riga, Latvia. Science of the Total Environment, 747, article No 140921, doi.org/10.1016/j.scitotenv.2020.140921 Druva-Lusite, I., Karlsons, A ., Andersone-Ozola, U., Ievina, B., Nečajeva, J., Samsone, I., and Ievinsh, G. 2020. Physiological performance of a coastal marsh plant Hydrocotyle vulgaris in natural conditions in relation to mineral nutrition and mycorrhizal symbiosis. Proc. Latvian Acad. Sci., Section B, Vol. 74 (4), 252–262. DOI: 10.2478/prolas-2020-0040. 2019 Jakobsone, G., Osvalde, A. 2019. Pecularities of calcium and iron effects on some wild terrestrial orchids in vitro and in vivo. In Vitro Cellular & Developmental Biology-Plant, 55:121–131. DOI 10.1007/s11627-019-09959-5. Karlsons, A., Osvalde, A. 2019. Effect of foliar fertilization of microelements on highbush blueberry (Vaccinium corumbosum L.) nutrient status and yield components in cutover peatlands. Agronomy Research 17(1), 133–143, 2019 doi.org/10.15159/AR.19.028 Alle, V., Osvalde, A

-rays and recorded at 9K, are successfully completed and revealed that the Eu 3+ doping creates traps in all samples, but to obtain information about the processes and specific defect type research has to be moved on and carry out additional analysis. During October/November - mobility to partner Institution, Vinča Institute of Nuclear Science, Belgrade, Serbia. New material LaF 3 : 2mol%Er 3+ , 20mol%Yb 3+ was synthesized by optimized microwave-assisted hydrothermal route, and pure spinel Mg 2 Al 2 O 4 : Yb 3+ structure was obtained. By now phase composition and morphology of acquired structures were investigated. During December participation in the workshop ‘’The Student Deep Science Hackathon’’, at Institute of Solid State Physics, University of Latvia (ISSP UL). First tests – application of GdF 3 : Er 3+ , Yb 3+ @SiO 2 and GdF 3 : Er 3+ , Yb 3+ in biology and medicine are started – measurements of luminescence in the temperature range 298 K–403 K. The ongoing research will be continued

°, 225 °, 270 ° and 315 °). Thesis was submitted: Janis Spigulis, Uldis Rubins, Edgars Kviesis-Kipge, Andris Grabovskis, Aleksejs Lihacovs, Ilze Lihacova, Dmitrijs Bliznuks, Ilona Kuzmina, Ilze Oshina, Marta Lange, “Advanced imaging technologies for distant assessment of in-vivo skin,” in which I co-authored the Northern Optics & Photonics Conference in Lund, Sweden, September 12 - 14, 2018. July 30 to September 23 - vacation. Published thesis: Janis Spigulis, Uldis Rubins, Edgars Kviesis-Kipge, Andris Grabovskis, Aleksejs Lihacovs, Ilze Lihacova, Dmitrijs Bliznuks, Ilona Kuzmina, Ilze Oshina, Marta Lange, “Advanced imaging technologies for distant assessment of in-vivo skin” Northern Optics & Photonics 2018 conference proceedings. The thesis is available here: photonicsweden.org/wp-content/uploads/NorthernOptics2018_proceedings.pdf An informative presentation and poster about the project and its current and planned activities have been prepared. Participation

spectroscopic methods. UV absorption spectra of SiO 2 glasses and optical fiber waveguides produced from this glass were studied. The main factors, which limit the optical transmissivity of these glasses and waveguides are silicon dangling bonds in 210 nm region, peroxide radicals in 230 nm region and oxygen dangling bonds in the 260 nm region. However the Raman scattering data indicate that in a number of synthetic SiO 2 glasses part of the 260 nm absorption can originate from photoinduced reaction between oxygen and chlorine impurities. 7. Chlorine impurities in SiO2- type materials High-purity synthetic SiO2 materials are routinely produced from SiCl4 , additionally, Cl2 treatment is used for removing of silanol groups in synthesis of "dry" glasses. As a result, all so called "high purity" SiO2 glasses contain undesired Cl impurities. To enable theri quantification and detection, the forms of Cl embedding in SiO2