Search results for "USM"
showing 10 items of 902 documents
Antiviral Agents From Fungi : Diversity, Mechanisms and Potential Applications
2018
Viral infections are amongst the most common diseases affecting people worldwide. New viruses emerge all the time and presently we have limited number of vaccines and only few antivirals to combat viral diseases. Fungi represent a vast source of bioactive molecules, which could potentially be used as antivirals in the future. Here, we have summarized the current knowledge of fungi as producers of antiviral compounds and discuss their potential applications. In particular, we have investigated how the antiviral action has been assessed and what is known about the molecular mechanisms and actual targets. Furthermore, we highlight the importance of accurate fungal species identification on ant…
The protective value of a defensive display varies with the experience of wild predators
2019
AbstractPredation has driven the evolution of diverse adaptations for defence among prey, and one striking example is the deimatic display. While such displays can resemble, or indeed co-occur with, aposematic ‘warning’ signals, theory suggests deimatic displays may function independently of predator learning. The survival value of deimatic displays against wild predators has not been tested before. Here we used the mountain katydid Acripeza reticulata to test the efficacy of a putative deimatic display in the wild. Mountain katydids have a complex defence strategy; they are camouflaged at rest, but reveal a striking red-, blue-, and black-banded abdomen when attacked. We presented live kat…
Finländska svensklärares undervisningspraktiker och deras samband med elevers inlärningsresultat
2019
Lärarens val av undervisningspraktiker spelar en avgörande roll för elevers inlärningsresultat. I lärarkognitionen ingår förmågan att på adekvata sätt styra och handleda elevens inlärningsprocess och utvärdera dess utgång med livslångt lärande som huvudsyfte. I artikeln kartläggs och analyseras vilka samband som finns mellan undervisningspraktiker och elevers inlärningsresultat i svenskans långa lärokurs i slutet av den grundläggande utbildningen. Materialsamplet härstammar från den finländska nationella utvärderingen från 2013 och omfattar 1679 elever och 98 lärare, vars respons genomgick en fördjupad analys. Ur analysen framgick en tämligen traditionell bild av lärarnas arbetssätt. Vissa …
Mucin induces CRISPR-Cas defense in an opportunistic pathogen
2022
It is unknown what circumstances promote particular bacterial defenses against bacterial viruses (phages). Almeida & Hoikkala et al. show that mucin, derived from mucus, greatly accelerates CRISPR-Cas defenses against phage in an opportunistic pathogen. Parasitism by bacteriophages has led to the evolution of a variety of defense mechanisms in their host bacteria. However, it is unclear what factors lead to specific defenses being deployed upon phage infection. To explore this question, we co-evolved the bacterial fish pathogen Flavobacterium columnare and its virulent phage V156 in presence and absence of a eukaryotic host signal (mucin) for sixteen weeks. The presence of mucin leads to a …
Brīvmūrniecības izpausmes Krievijas impērijā no 1730.gadiem līdz 1825.gadam
2016
Bakalaura darbs "Brīvmūrniecības izpausmes Krievijas impērijā no 1730.gadiem līdz 1825.gadam" sniedz ieskatu Krievijas brīvmūrniecības vēsturē sākot ar tās izcelšanos 18.gadsimta pirmajā pusē un beidzot ar imperatora Nikolaja I aizliegumu. Šī darba mērķis ir analizēt brīvmūrniecības attīstības gaitu un izpausmes Krievijas impērijā no 1730.gadiem līdz 1825.gadam. Darba ievadnodaļās tiek sniegts vispārīgs ieskats brīvmūrniecības izcelsmē, kā arī dots brīvmūrnieku terminoloģijas un svarīgāko idejisko nostādņu raksturojums. Darba pamatnodaļās ir analizēta brīvmūrnieku darbība Krievijas impērijas politiskajā un sabiedriskajā jomā.
Neuvostoliitto ja suomalainen soitonopetus : rajoja ja mahdollisuuksia
2021
Artikkelissa käsitellään suomalaisen instrumenttiopetuksen kehitystä. Fokuksessa on Neuvostoliiton vaikutus erityisesti pianon- ja viulunsoiton opetukseen ajanjaksona, jolloin suomalainen musiikkikoulutus kehittyi voimakkaasti, 1960-luvulta 1980-luvulle. This article discusses the development of teaching of musical instruments in Finland. The focus is fixed on the Soviet impact during the decades when Finnish music education was strongly developing, from the 1960s to 1980s. The focus is, in particular, the teaching of two instruments, the piano and the violin. Both received still noticeable influences from the top musicians and their methods in Soviet Union. Attention is paid both on struct…
3-4 gadīgu bērnu emocionālo izpausmju sekmēšana vizuālajā mākslā
2019
Bakalaura darba autore: Signe Aukmane-Vīksna. Bakalaura darba tēma: ‘’3-4 gadīgu bērnu emocionālo izpausmju sekmēšana vizuālajā mākslā.’’ Bakalaura darba izvirzīts pētījuma mērķis: teorētiski un praktiski izzināt emocionālo izpausmju sekmēšanas iespējas vizuālajā mākslā. Pētījums sastāv no divām daļām. Teorētiskajā daļā tika analizēta literatūra par emocijām, vizuālo mākslu un tās ietekmi uz bērnu emocionālo izpausmi. Empīriskajā daļā tika izmantota novērošanas metode, lai izzinātu kā bērni pauž savas emocijas vizuālās mākslas nodarbībās. Pirms pētījuma sākuma darba autore izstrādāja 5 kritērijus, lai izvērtētu bērnu emocionālo izpausmi vizuālajā mākslā pirms darba uzsākšanas un pēc tā. Tik…
Soil moisture variations from boreal forests to the tundra
2023
Soil moisture has a profound influence on life on Earth, and this vital water resource varies across space and time. Here, we explored soil moisture variations in boreal forest and tundra environments, where comprehensive soil moisture datasets are scarce. We installed soil moisture sensors up to 14 cm depth at 503 measurement sites within seven study areas across northern Europe. We recorded 6,138,528 measurements to capture soil moisture variations of the snowless season from April to September 2020. We described the spatio-temporal patterns of soil moisture, and test how these patterns are linked to topography and how these links vary in space and time. We found large spatial variation a…
Trialling the 4C framework in an Indian grade 3 mathematics classroom
2017
This thesis describes an action research carried out in a Grade 3 maths classroom in a low income, English medium school in Mumbai, India. The maths teacher in the study used the 4C model proposed by Do Coyle (2010) as a framework of Content and Language Integrated Learning (CLIL) for teaching maths in English to students whose exposure to English outside the classroom was negligible. The aim of this research was to understand from a teacher’s perspective how the 4C framework contributed to this specific context and how group-work enhanced the 4C framework. The action research was carried over a period of nearly five months in three cycles. Through the entire duration of the action research…
Opportunities and limitations of in-gas-cell laser spectroscopy of the heaviest elements with RADRIS
2022
International audience; The radiation detection resonance ionization spectroscopy (RADRIS) technique enables laser spectroscopic investigations of the heaviest elements which are produced in atom-at-a-time quantities from fusion-evaporation reactions. To achieve a high efficiency, laser spectroscopy is performed in a buffer-gas environment used to thermalize and stop the high-energy evaporation residues behind the velocity filter SHIP. The required cyclic measurement procedure in combination with the applied filament collection for neutralization as well as confinement of the stopped ions and subsequent pulse-heat desorption constrains the applicability of the technique. Here, some of these…