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Par cilvēcisko lietu nepastāvību
1598
Teoloģiski ētiskais, vēsturiskais traktāts “Par cilvēcisko lietu nepastāvību” iesākas ar veltījumu dažādiem Rīgas rātskungiem. Par savstarpējo apmaiņu ar laipnībām var uzskatīt Dāvida Hilhena vēstuli grāmatas autoram un savukārt Georga Cīglera sacerēto dzeju par godu D. Hilhenam. G. Cīglers nopublicējis savā grāmatā arī Rostokas zinātnieka, vēsturnieka Dāvida Hitreja vēstuli autoram. Hitrejs raksta, ka neraugoties uz redzes problēmām, esot iepazinies ar G. Cīglera grāmatu (grāmata iznāca 1598 un 1599 gadā). Pazemīgie veltījumi ietekmīgām personām ieviesās arī tāpēc, ka sacerētāji tādējādi kompensēja trūkstošo autora honorāru, jo bagātie patricieši parasti parādā nepalika. Eksemplāriem atšķi…
Lattice operations on Rickart *-rings
2014
Various authors have investigated properties of the star order (introduced by M.P. Drazin in 1978) on algebras of matrices and of bounded linear operators on a Hilbert space. Rickart involution rings (*-rings) are a certain algebraic analogue of von Neumann algebras, which cover these particular algebras. In 1983, M.F. Janowitz proved, in particular, that, in a star-ordered Rickart *-ring, every pair of elements bounded from above has a meet and also a join. However, the latter conclusion seems to be based on some wrong assumption. We show that the conclusion is nevertheless correct, and provide equational descriptions of joins and meets for this case. We also present various general proper…
Bradyrhizobium sp. nodulating the Mediterranean shrub Spanish broom (Spartium junceum L.)
2002
Aims: The molecular diversity of 25 strains of rhizobia, isolated in Sicily from root nodules of the Mediterranean shrubby legume Spanish broom (Spartium junceum L.), is presented in relation to the known rhizobial reference strains. Methods and Results: Our approach to the study of the S. junceum rhizobial diversity combined the information given by the 16S and the intergenic spacer (IGS) 16S–23S rDNA polymorphic region by obtaining them in a single polymerase chain reaction (PCR) step. The PCR fragment size of the S. junceum isolates was 2400–2500 bp and that of the reference strains varied from 2400 in Bradyrhizobium strains to 2800 in Sinorhizobium strains. Inter- and intrageneric lengt…
Vēsture: Sabiedrība, pārvalde un saimniecība Baltijas jūras reģionā no aizvēstures līdz jaunajiem laikiem
2012
Šajā LU Rakstu sējumā iekļautie raksti pamatojas gan uz referātiem, kas tikuši nolasīti 2008.–2010. gadā LU 66., 67. un 68. zinātniskās konferences Arheoloģijas, kā arī Viduslaiku un jauno laiku vēstures sekcijā, gan uz LU Vēstures un filozofijas fakultātes doktorantu pētījumiem. Raksti ir sadalīti divās daļās, kas, lai gan hronoloģiski pārklājas, tomēr atspoguļo dažādas vēstures jomas – pirmā krājuma daļa ir veltīta aktuāliem arheoloģiskiem pētījumiem, savukārt otrajā daļā iekļautie raksti pievēršas viduslaiku un jauno laiku vēstures problemātikai. Krājuma rakstos no dažādām pētnieciskām perspektīvām aplūkoti Baltijas jūras reģiona – pārsvarā Latvijas teritorijas (viena raksta gadījumā att…
Empirical Study on Cyber Range Capabilities, Interactions and Learning Features
2021
Emerging technologies and the globalization require constant investment in people and their performance in actual and virtual environments. New technologies such as autonomous systems, machine learning and artificial intelligence (AI) radically re-contextualize the human dimension of the organization. Technological developments are changing the ways people experience the physical and the virtual environments. Strategic changes have revealed new critical vulnerabilities such as social media-based disinformation campaigning with impact on the human aspects at state, societal, organizational and individual levels. Scenarios of gathering information, committing fraud or getting access to critic…
Individual participant data systematic reviews with meta-analyses of psychotherapies for borderline personality disorder
2021
IntroductionThe heterogeneity in people with borderline personality disorder (BPD) and the range of specialised psychotherapies means that people with certain BPD characteristics might benefit more or less from different types of psychotherapy. Identifying moderating characteristics of individuals is a key to refine and tailor standard treatments so they match the specificities of the individual participant. The objective of this is to improve the quality of care and the individual outcomes. We will do so by performing three systematic reviews with meta-analyses of individual participant data (IPD). The aim of these reviews is to investigate potential predictors and moderating patient chara…
Connecting Disasters and Climate Change to the Humanitarian-Development-Peace Nexus
2022
As climate change increasingly affects the world, much is said about the rising amounts of aid required to support emergency response, long-term development to adapt, and peacebuilding to ensure that conflict does not undermine these efforts. Bringing these ideas together, some advocate for the addition of a separate climate change stream into the humanitarian, development, and peace/peacebuilding nexus (or triple nexus). Based on a critical literature review and synthesis, this article articulates and conceptualizes how climate change perspectives and actions should be integrated into the existing streams of the humanitarian, development, and peace/peacebuilding nexus, rather than being ad…
Taking Stock and Re-Examining the Role of Science Communication
2021
Eight science communication research projects have been funded by the European Commission since 2018. These projects are a response to one of the European Commission's 'Science with and for Society' (SwafS) funding calls ¿ 'SwafS-19: Taking stock and re-examining the role of science communication.' Together these projects have received almost ¿10 million in research funding, and each has been affected to some extent by the COVID-19 global pandemic. This paper provides an overview of the eight projects, how they adapted to the challenges caused by the pandemic, and the subsequent implications for science communication policy and research funding.
Salinity and Bacterial Diversity: To What Extent Does the Concentration of Salt Affect the Bacterial Community in a Saline Soil?
2014
In this study, the evaluation of soil characteristics was coupled with a pyrosequencing analysis of the V2-V3 16S rRNA gene region in order to investigate the bacterial community structure and diversity in the A horizon of a natural saline soil located in Sicily (Italy). The main aim of the research was to assess the organisation and diversity of microbial taxa using a spatial scale that revealed physical and chemical heterogeneity of the habitat under investigation. The results provided information on the type of distribution of different bacterial groups as a function of spatial gradients of soil salinity and pH. The analysis of bacterial 16S rRNA showed differences in bacterial compositi…
Characteristics of the salivary microbiota in cheilitis granulomatosa.
2019
Background Cheilitis granulomatosa (CG) is a disturbing and persistent idiopathic lip swelling. The cause and treatment has not been wholly elucidated. Some reports infer that CG is mainly associated with dental infection but no firm or reliable microbiological evidence has been provided for a causative organism. This study aimed to evaluate whether microorganisms contribute to the etiology of CG in order to inform appropriate treatment options in clinic. Material and Methods Unstimulated saliva was collected from 15 CG patients who were diagnosed clinically and pathologically and 15 healthy controls (HC). DNA was extracted from the precipitate of the centrifuged saliva for 16s rRNA high-th…