Search results for "kl"
showing 10 items of 5772 documents
Metodika un aparatūra 14C aktivitātes noteikšanai mazaktīvos paraugos
1999
Darbu kopsavilkums fizikas doktora grāda iegūšanai
No temperatūras atkarīga gadolīnija jonu iebūvēšanās kalcija fluorīda oksifluorīdu stikla keramikā
2021
Caurspīdīga, ar retzemju joniem aktivēta oksifluorīdu stikla keramika ir potenciāla alternatīva augstas efektivitātes luminiscējošu materiālu izstrādē. Kristāliskā fāze keramikā ir iemesls paaugstinātai luminiscences efektivitātei salīdzinājumā ar stiklu. Šādā materiālā ir aktuāli kontrolēt aktivatoru iebūvēšanos kristāliskajā fāzē. Darba mērķis ir raksturot Gd(III) jonu iebūvēšanos dinamiku caurspīdīgas stikla keramikas kristāliskajā fāzē atkarībā no karsēšanas temperatūras un izvēlētā sastāva. Šajā pētījumā tika sintezēti stikli ar sekojošiem sastāviem: 46 SiO2 - 20 Al2O3 - 8 CaCO3 - 25.9 CaF2 - 0.1 GdF3 un 46 SiO2 - 20 Al2O3 - 8 CaCO3 - 20.9 CaF2 - 5 XF - 0.1 GdF3, kur X ir Li, K, Na. Pa…
Ūdeņu kvalitātes rādītāju izvērtējums saimniecības ,,Rūķīši” zivju dīķos
2016
Ūdens kvalitātes rādītāju izvērtējums saimniecības “Rūķīši” zivju dīķos. Ozoliņa L.P., zinātniskais vadītājs lekt., ķīm.maģ. Z. Balcerbule. Bakalura darbs, 45 lapaspuses, 13 tabulas, 12 attēli, 4 pielikumi, 29 literatūras avoti. Latviešu valodā. Darbā analizēti 3 dažādi ūdens paraugi – 2 no saimniecības “Rūķīši” zivju dīķiem un 1 no Lazdaga ezera. Ūdens kvalitātes rādītāju izmaiņas tika pētītas 3 mēnešu laika posmā no marta līdz maijam. Tika noteikta nitrātjonu koncentrācija jonometriski, izšķīdušā skābekļa koncentrācija ar Vinklera metodi, ķīmiskā skābekļa patēriņš permanganatometriski, kā arī ūdens cietība ar divām metodēm – kompleksonometriski titrējot un fotometriski ar optiskās šķiedra…
Zvaigžņotā Debess: 2000, Rudens (169)
2000
Contents: M.Zepe. Water Steam in the Venus Atmosphere ; B.Sala, L.Kondraševa. Use of Solar Energy ; A.Balklavs. Century Long Astrophysics ; Z.Alksne, A.Alksnis. Plenty of Extrasolar Planets ; Z.Alksne, A.Alksnis. Unexpected Discovery of Spiral Structure in a Dwarf Elliptical Galaxy ; A.Balklavs. Hunting for the Black Holes ; J.Jaunbergs. Private Enterprise on Mir ; T.Czarnik. Surviving Explosive Decompression ; M.Gills. Space Research 40 Years Ago – Chronicle ; M.Krastiņš. Impressions about Rose Center for the Earth and Space ; K.Bērziņš. On Friendly Terms with Cosmology: Basic Principles and Models of the Universe (continuation) ; V.Flerov, A.Cēbers, D.Docenko, V.Kaščejev. Latvia 24th Open…
Combining workload balance and patient priority maximisation in operating room planning through hierarchical multi-objective optimisation
2022
Abstract Previous analysis suggested the opportunity to consider the preferences of different stakeholders (hospital, patients, doctors and nurses) through the adoption of both patient priority maximisation and workload balance as performance criteria. The aim of this paper is to develop an effective and efficient solution approach for the operating room planning and scheduling capable to take into account the patient priority maximisation and workload balance criteria at the same time. This work is inspired by the need of a deeper understanding of the quality of the solutions obtained when a combination of the two criteria leads the OR planning decisions. Starting from a hierarchical multi…
Becoming an Inclusive Teacher at the Interface of School and Teacher Education
2015
The aim of this study is to assess how the pedagogical solutions of the inclusive teaching practice in class teachers' adult education programme support the development to become an inclusive teacher. What kind of interpretations do the students make of inclusion and inclusive school? How does the participation in school community with reflective support by teacher education community enhance inclusive professional orientation? The research material consists of qualitative network material written by 22 adult students: teaching practice plans, reflective practice stories and teaching practice feedback. The analytical approach was thematic text analysis. Inclusion was interpreted as pupils’ …
Pseudocomplements in sum-ordered partial semirings
2007
We study a particular way of introducing pseudocomplementation in ordered semigroups with zero, and characterise the class of those pseudocomplemented semigroups, termed g-semigroups here, that admit a Glivenko type theorem (the pseudocomplements form a Boolean algebra). Some further results are obtained for g-semirings – those sum-ordered partially additive semirings whose multiplicative part is a g-semigroup. In particular, we introduce the notion of a partial Stone semiring and show that several well-known elementary characteristics of Stone algebras have analogues for such semirings.
Die, diese, keine, meine, alle, viele, manche und ähnliche Wörter. Zur Problematik der Wortartenbestimmung
2014
Klemens Rzymski o sukcesji apostolskiej
2014
1910. anniversary of the death of Saint Clement of Rome, the third successor of Bishop of Rome, celebrated a few years ago († 101), became an opportunity to remind his teaching, which he left in the Epistle to the Corinthians, written by him. The content of this letter is an important witness of the emerging church organization. That, what was happening in Corinth and, without a doubt, in Rome, is one of the stages of the Church’s history of major importance. The contemporary situation related to the authority prompted the acceptance of the institutional proposal based on the Holy Scripture and the practice of the Apostles. Transferring saving mission “from hands to hands”, called apostolic…
Large stocks of peatland carbon and nitrogen are vulnerable to permafrost thaw
2020
Significance Over many millennia, northern peatlands have accumulated large amounts of carbon and nitrogen, thus cooling the global climate. Over shorter timescales, peatland disturbances can trigger losses of peat and release of greenhouses gases. Despite their importance to the global climate, peatlands remain poorly mapped, and the vulnerability of permafrost peatlands to warming is uncertain. This study compiles over 7,000 field observations to present a data-driven map of northern peatlands and their carbon and nitrogen stocks. We use these maps to model the impact of permafrost thaw on peatlands and find that warming will likely shift the greenhouse gas balance of northern peatlands. …