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showing 10 items of 4004 documents

Composite Membranes of Sulfonated Poly(ether ether ketone) with Active Carbon: Composite Preparation and Investigation of their Properties for Potent…

2020

Authors of this work acknowledge funding from European Union`s Horizon 2020 Research and Innovation Program project under grant agreement No 768789.

surface zeta potentiallcsh:TN1-997Thermogravimetric analysisMaterials science020209 energySynthetic membraneimpedance analysisEther02 engineering and technology7. Clean energychemistry.chemical_compoundSulfonated poly(ether ether ketone)0203 mechanical engineering:NATURAL SCIENCES:Physics [Research Subject Categories]0202 electrical engineering electronic engineering information engineeringZeta potentialmedicineGeneral Materials Sciencelcsh:Mining engineering. Metallurgychemistry.chemical_classificationImpedance analysisSurface zeta potentialSulfuric acidco2 reductionPolymersulfonated poly(ether ether ketone)020303 mechanical engineering & transportsMembranechemistryChemical engineeringCO2 reductionSwellingmedicine.symptomMedžiagotyra
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Brief an Garlieb H. Merkel

1797

Ms. 930a, Nr. 5, Bl. 11r-14v Recke, Charlotte Elisabeth (Elisa) Constantia v. der. Brief an Garlieb H. Merkel, Pyrmont (?), d[en] 8. May 1797 Autora rokraksts / Autograph, vācu un franču val. / Deutsch und Französisch [8] lpp. / S. Attēlu numuri / Bildnummern: 930a-005-1 – 930a-005-8 Der Brief von Elisabeth von der Recke wurde wahrscheinlich in Pyrmont verfasst. Die Autorin bezieht sich auf einen Brief Merkels, auf den sie antwortet. Sie äußert ihre grundsätzliche Zustimmung zur Idee einer Befreiung der Bauern in Liv- und Kurland und kann als Besitzerin zweier Güter, die ihr von der Kaiserin Katharina II. übereignet wurden, als Adressatin von Merkels Forderungen, die er in „Die Letten“ form…

svētlaimeMerkel Garlieb Helvig (1769-1850)Recke Charlotte Elisabeth (Elisa) Constantia v. der (geb. v. Medem 1754-1833)Bernstorff Andreas Peter Graf von (1735-1797)muižas:HUMANITIES and RELIGION [Research Subject Categories]Apgaismības laikmetsMerķelis Garlībs Helvigs (1769-1850)LiteraturKatrīna II (Katrīna Lielā Krievijas imperatore)Katharina II von Russland (1719-1796) (Katharina die Große)zemnieku brīvlaišanaBauernbefreiungFranzösische RevolutionMustergutliteratūraKrongüterparaugsaimniecībaGlückseligkeitReke Elizabete Šarlote Konstance fon (dz. Mēdema 1754-1833)Franču revolūcijaAufklärung
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Mazā sēņu grāmatiņa

2021

Raksts par grāmatu "Praktiskā sēņu zinātne" (Praktische Pilzkunde), kas tika izdota 1919. gadā sērijā "Miniatūru bibliotēka" (Miniatur-Bibliothek). Grāmata ir par tā laika Vācijā izplatītākajām sēnēm, to lietošanu un drošu lietošanu uzturā. Grāmata glabājas Latvijas Universitātes muzeja Botāniskajā un mikoloģijas kolekcijā.

sēnes:NATURAL SCIENCES::Biology::Organism biology::Plant physiology [Research Subject Categories]grāmata
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Ferdinands Erdmanis Štolls. Sēņu pasaule

2023

“Muzeja sērijas” trešā grāmata “Ferdinands Erdmanis Štolls. Sēņu pasaule.” Tā ir neliels ieskats mikologa F. E. Štolla (Ferdinand. Erdman Stoll; 1874–1966) vairāk kā 1000 lapu lielajā sēņu attēlu kolekcijā, ko zinātnieks ir izveidojis pētot Latvijas sēnes un, kas pamatā sastāv no paša pētnieka zīmētajiem akvareļiem. Akvareļu kolekcija ir viens no Latvijas Universitātes Muzeja Botānikas un mikoloģijas kolekciju dārgumiem, kas joprojām ir ne tikai pētnieku interešu objekts, bet spēj iepriecināt jebkuru interesentu ar savām estētiskajām kvalitātēm. Publicētos akvareļus raksturo citāti no 1934. gadā izdotās F. E. Štolla grāmatas “Latvijas sēnes”, kas ir pirmā izdotā mikoloģijas grāmata latviešu…

sēnesmycologymikoloģijaakvareļiwatercolors:HUMANITIES and RELIGION::History and philosophy subjects::History subjects::History of science [Research Subject Categories]mushroomsFerdinand Erdmann Stoll
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Models of tax payments of performers of economic activity in Latvia

2019

Economic theory sources widely discuss the fiscal policy, the ways of encouraging economic development, improve the welfare of people, improve employment and promote progress by fiscal instruments. On one side, it is possible to use the expenditure policy, on the other side, tax revenue can be optimised by reducing tax gaps. State officials often view self-employment as a missed opportunity deserving more focused attention. The European Union also supports this position. The question of self-employment is important for performers of economic activity. The aim of the research: on the basis of theoretical (legislative) and empirical analysis to find out advantages and disadvantages of tax pay…

tax payment:SOCIAL SCIENCES::Business and economics [Research Subject Categories]Latviaperformer of economic activity
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Fiscal policy as an instrument for reducing income inequality: case of Latvia

2020

With the help of fiscal policy, government may influence both overall demand and the disposable income of the population, as well as solve social equality challenges in the society by allocating income among different groups of population. Income inequality in Latvia, which is expressed by the Gini index of disposable income, is the third highest in the European Union, so the question about the most effective instruments for reducing income inequality is pressing. Inequality results in reduced efficiency of social capital and economic distribution, worsening of population health indicators, rising social tension, increased crime and rising poverty, which can have a negative impact on long-t…

tax reform:SOCIAL SCIENCES::Business and economics [Research Subject Categories]fiscal policyincome inequality
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Teachers' Survey on Emergency Remote Teaching Experience during Spring 2020 (COVID-19)

2021

Latvian Council of Science State Research Program “Covid-19 mitigation” project “Life with COVID-19: Evaluation of overcoming the coronavirus crisis in Latvia and recommendations for societal resilience in the future” No. VPP-COVID-2020/1-0013 Emergency Remote Teaching Questionnaire for Latvian Teachers of Comprehensive Schools during Spring 2020 (COVID-19 "First wave"). Participated 1543 teachers from all regions of Latvia.

teachersattālinātās mācības:SOCIAL SCIENCES::Social sciences::Education [Research Subject Categories]Covid-19tālmācība
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Effect of Core–Shell Rubber Nanoparticles on the Mechanical Properties of Epoxy and Epoxy-Based CFRP

2022

This research was funded by M-Era.Net project MERF “Matrix for carbon reinforced epoxy laminates with reduced flammability” grant No. 1.1.1.5/ERANET/20/04 from the Latvian State Education Development Agency and M-Era.Net project “EPIC—European Partnership for Improved Composites“ funded by grant No. TH06020001. A.S., K.S. and A.Z. are grateful to funding received from the European Union Horizon 2020 Framework program H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under grant agreement No. 739508, project CAMART2.

tensile propertiescore–shell rubber nanoparticlesepoxy; CFRP; core–shell rubber nanoparticles; tensile properties; fracture toughness; glass transition temperatureGeneral Materials Science:NATURAL SCIENCES::Physics [Research Subject Categories]glass transition temperatureCFRPepoxyfracture toughness
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Flame-Retardant and Tensile Properties of Polyamide 12 Processed by Selective Laser Sintering

2022

This research was funded by the European Regional Development Fund within Measure 1.1.1.1 “Industry-Driven Research” of the Specific aid objective 1.1.1 “To increase the research and innovation capacity of scientific institutions of Latvia and their ability to attract external funding by investing in human resources and infrastructure” of the Operational Program “Growth and Employment” (Project No. 1.1.1.1/19/A/143). A.S. and A.Z. are grateful to funding received from the European Union Horizon 2020 Framework programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under grant agreement No. 739508, project CAMART2.

tensile propertiespolyamide 12flame-retardant properties; vertical burn test; tensile properties; anisotropy; additive manufacturing; polyamide 12; selective laser sinteringCeramics and Composites:NATURAL SCIENCES::Physics [Research Subject Categories]vertical burn testanisotropyselective laser sinteringflame-retardant propertiesadditive manufacturingEngineering (miscellaneous)Journal of Composites Science
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Latvijas Vēstures Institūta Žurnāls. 2020, Nr. 2 (112)

2020

the Duchy of Courland and SemigalliaLatvijas Neatkarības karšlatviešu tradicionālais apģērbsvērtības tiesības un mantojums interešu grupu saskarsmē” (The importance of human rights in the heritage management: values rights and heritage among the stakeholders’ interests) [Starptautiska zinātniskā konference “Cilvēktiesību loma un nozīme kultūras mantojuma jomā]:HUMANITIES and RELIGION::History and philosophy subjects::History subjects [Research Subject Categories]RecenzijasTurku Universitātē notika konference “Nāves vēstures” (Histories of Death)nacistiskā okupācijaTamāra PuškinaStarptautiska konference “Cilvēks un karš. Atzīmējot simtgadi kopš Neatkarības kara beigām Latvijā”Mālpils pils 1582. un 1590. gada revīziju protokoliTatjana Berga
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