Search results for "photos"
showing 10 items of 701 documents
Latvijas Universitātes izlaidumi fotoliecībās
2020
Latvijas Universitātes Muzejs par godu izlaidumu sezonai piedāvā iepazīt Latvijas Universitātes Muzeja Latvijas Universitātes vēstures kolekcijās, Latvijas Universitātes foto arhīvā un personīgajos foto albumos esošās izlaiduma fotogrāfijas. Izlaidums universitātē ir svinīgs akts, kur visi vienas fakultātes studiju programmu absolventi pēc veiksmīgi nokārtotiem gala pārbaudījumiem un studiju noslēguma darba aizstāvēšanas saņem Latvijas Universitātes diplomus. Tradicionāli izlaidumi norisinās Alma Mater sirdī (Lielajā aulā) skaistākajā vasaras laikā jūnijā un jūlijā.
Pa pēdām Aristotelim
2019
Virtuālā izstāde "Pa pēdām Aristotelim" veltīta jaunā studiju gada sagaidīšanai un vēsturiskam atskatam par studentu svētkiem "Aristotelis". Izstādē apskatāmas fotogrāfijas, kurās attēlota svētku gaita no to rašanās līdz pat mūsdienām, kā arī informācija par svētku dibināšanu un svētku norisi.
Studentu dziesmu un deju festivāls “Gaudeamus” dalībnieku atmiņās
2021
Izstādi “Studentu dziesmu un deju festivāls “Gaudeamus” dalībnieku atmiņās” veido bijušo un esošo Latvijas Universitātes pašdarbības kolektīvu dalībnieku fotogrāfijas no dažādiem svētkiem un ar svētkiem saistītām aktivitātēm – mēģinājumiem, svētku gājieniem un koncertiem. Tāpat izstādē iespējams iepazīties ar bijušā Deju folkloras kopas “Dandari” dalībnieka Aivara Narvaiša iespaidiem par “Gaudeamus” svētkiem, nelielu izstādē apskatāmo svētku vēsturi un interesantāko informāciju, kā arī festivāla “Gaudeamus” hronoloģiju.
Monitoring the evolution of coastline in Sicily by aerial photos and high resolution satellite imagery
2009
Italy is one of the country more exposed to coasts erosion: about 1200 km of coasts on about 8350 km are moved back of about 25 m in the last 50 years. Particularly Sicily have about 300 km of coasts moved back. There are various reasons of this phenomenon: natural factor (climatic or physical-oceanographic) with environmental and economic effects. The paper reviews the activity of the Dipartimento di Rappresentazione of University of Palermo in cooperation with the Regional Agency of Environmental Protection (ARPA) about the coastline evolution in Sicily. The research is carried out on selected physiographic units marked out by important erosive phenomena. The coastline trend are reconstru…
Antifungal activity improved by coproduction of cyclodextrins and anabaenolysins in Cyanobacteria
2015
Department of Chemistry, Nanoscience Center, University of Jyväskylä, FI-40014, Jyväskylä, Finland Cyclodextrins are cyclic oligosaccharides widely used in the pharmaceutical industry to improve drug delivery and to increase the solubility of hydrophobic compounds. Anabaenolysins are lipopeptides produced by cyanobacteria with potent lytic activity in cholesterolcontaining membranes. Here, we identified the 23- To 24-kb gene clusters responsible for the production of the lipopeptide anabaenolysin. The hybrid nonribosomal peptide synthetase and polyketide synthase biosynthetic gene cluster is encoded in the genomes of three anabaenolysin-producing strains of Anabaena.We detected previously u…
Restoration and Enhancement of Historical Stereo Photos
2021
Restoration of digital visual media acquired from repositories of historical photographic and cinematographic material is of key importance for the preservation, study and transmission of the legacy of past cultures to the coming generations. In this paper, a fully automatic approach to the digital restoration of historical stereo photographs is proposed, referred to as Stacked Median Restoration plus (SMR+). The approach exploits the content redundancy in stereo pairs for detecting and fixing scratches, dust, dirt spots and many other defects in the original images, as well as improving contrast and illumination. This is done by estimating the optical flow between the images, and using it …
Modeling of the N-terminal Section and the Lumenal Loop of Trimeric Light Harvesting Complex II (LHCII) by Using EPR
2015
The major light harvesting complex II (LHCII) of green plants plays a key role in the absorption of sunlight, the regulation of photosynthesis, and in preventing photodamage by excess light. The latter two functions are thought to involve the lumenal loop and the N-terminal domain. Their structure and mobility in an aqueous environment are only partially known. Electron paramagnetic resonance (EPR) has been used to measure the structure of these hydrophilic protein domains in detergent-solubilized LHCII. A new technique is introduced to prepare LHCII trimers in which only one monomer is spin-labeled. These heterogeneous trimers allow to measure intra-molecular distances within one LHCII mon…
Synergistic Anticancer Therapy by Ovalbumin Encapsulation-Enabled Tandem Reactive Oxygen Species Generation
2020
Abstract The anticancer efficacy of photodynamic therapy (PDT) is limited due to the hypoxic features of solid tumors. We report synergistic PDT/chemotherapy with integrated tandem Fenton reactions mediated by ovalbumin encapsulation for improved in vivo anticancer therapy via an enhanced reactive oxygen species (ROS) generation mechanism. O2 .− produced by the PDT is converted to H2O2 by superoxide dismutase, followed by the transformation of H2O2 to the highly toxic .OH via Fenton reactions by Fe2+ originating from the dissolution of co‐loaded Fe3O4 nanoparticles. The PDT process further facilitates the endosomal/lysosomal escape of the active agents and enhances their intracellular deliv…
Mössbauer spectroscopy on the reaction center of Rhodopseudomonas viridis
1992
Proteins called “reaction centers” (RC) can be isolated from many photosynthetic bacteria. They have one non-heme iron in a quinone acceptor region. The RC of Rhodopseudomonas viridis contains an additional tightly bound tetra-heme cytochrome c subunit. The electronic configuration of both cytochrome and the non-heme iron has been studied in the crystallized protein by Mossbauer spectroscopy at different redox potentials, pH-values, and with an addition of o-phenanthroline. At high potentials (Eh=+500mV) all heme irons are in the low spin Fe3+-state, and at low potential (Eh=−150mV) they are low spin Fe2+ with the same Mossbauer parameters for all hemes independent of pH. Redox titrations c…
Truncated recombinant light harvesting complex II proteins are substrates for a protein kinase associated with photosystem II core complexes
1998
AbstractPrevious studies directed towards understanding phosphorylation of the chlorophyll a/b binding proteins comprising light harvesting complex II (LHC II) have concentrated on a single phosphorylation site located close to the N-terminus of the mature proteins. Here we show that a series of recombinant pea Lhcb1 proteins, each missing an N-terminal segment including this site, are nevertheless phosphorylated by a protein kinase associated with a photosystem II core complex preparation. An Lhcb1 protein missing the first 58 amino acid residues is not, however, phosphorylated. The results demonstrate that the LHC II proteins are phosphorylated at one or more sites, the implications of wh…