Search results for "PERT"
showing 10 items of 7689 documents
Magneto-structural correlations in discrete $Mn^{II}‐W^V$ cyano‐bridged assemblies with polyimine ligands
2010
We present the magneto-structural correlations for two novel discrete cyano-bridged assemblies based on cationic complexes of manganese(II) with diimine ligands and octacyanotungstate(V) ions. The crystal structure of [Mn II (terpy)(dmf)-(H 2 O) 2 ][Mn II (terpy)(H 2 O)(dmf)(μ-NC)W V (CN) 7 ] 2· 6H 2 O (1) (terpy = 2,2';6',2"-terpyridine, dmf = dimethylformamide) contains dinuclear {Mn II W V } - cyano-bridged anions, while the crystal structure of [Mn II (phen) 3 ] 2 [MnII(phen) 2 (μ-NC) 2 -W V (CN) 6 ] 2 (ClO 4 ) 2 ·9H 2 O (2) (phen = 1,10-phenanthroline) is built of tetranuclear {Mn II 2 W V 2} 2- square anions. Intramolecular Mn-W magnetic interactions through the cyano bridges are repr…
Modelling the dependence on medium and ionic strength of molybdate acidbase properties, and its interactions with phytate
2016
The importance of molybdenum from a biological, environmental and technological point of view is very well known since many decades [15]. In particular, it is mainly present in aqueous solutions as molybdate (MoO42), which is the biologically active form, entering in the cells by active transport systems. Though molybdate is the major species in neutral to basic pH conditions, at lower pH it undergoes protonation and, chiefly, polymerization, even at millimolar concentration levels [2]. Consequently, the modelling of its speciation and acidbase properties is not very simple, as demonstrated by the nonhomogeneity of available literature data. In this light, our group has started a systematic…
Toimijuus ja asiantuntijaksi kasvaminen monimediaisessa kielenopettamisessa
2011
This case study investigates the role of agency in the development of two students’ expertise during their participation in the year-long KOO-KIT program (Language Technology for Language Teachers) for pre-service language teachers at the Centre for Applied Language Studies of the University of Jyväskylä in the 2000s. The curriculum of the program was organized around project-based learning, with theoretical and pedagogical lessons and hands-on technology courses alternating with practical team work in web-based design. The data consist of the teachers’ observations and narrative assessments of the students’ performance, and the students’ self-reports during the one-year course. The finding…
Ergonomiskie darba vides riski tekstilrūpniecībā un to samazināšanas iespējas
2016
"Ergonomiskie darba vides riski tekstilrūpniecībā un to samazināšanas iespējas". Darba autore: Daiga Sidabra. Darba zinātniskā vadītāja: Dr.med., asociētā profesore Ženija Roja. Darbs izklāstīts uz 88 lpp., ietver 18 attēlus, 25 tabulas, 18 pielikumus, 20informatīvos avotus. Pētījums sastāv no 4 daļām. Pirmajā daļā ir apkopota un analizēta literatūra par tekstilrūpniecību, kā arī ergonomiskiem riskiem šūšanas operatoru darbā. Literatūras analīzes rezultāti liecina, ka šūšanas operatori savā ikdienas darbā pakļauti ergonomiskiem darba vides riskiem. Otrajā daļā izklāstīts par pētījumā lietotām metodēm, bet trešajā daļā ietverta datu apkopošana no veiktajām aptaujām un rezultātu analīze. Apko…
intelektuālā īpašuma aizsardzība muitas iestādē.
2017
Maģistra darbs „Intelektuālā īpašuma aizsardzība muitas iestādē” sniedz ieskatu Latvijas tiesību sistēmā pastāvošajās problēmās attiecībā uz intelektuālā īpašuma tiesību aizsardzību muitā, salīdzinot muitas iestāžu darbību intelektuālā īpašuma tiesību aizsardzības jomā Latvijā un citās Eiropas Savienības dalībvalstīs. Darbs kopumā ir sadalīts trīs nodaļās, sākot ar intelektuālā īpašuma tiesību un viltoto preču jēdzienu analīzi un jautājuma par intelektuālā īpašuma tiesību tvērumu muitas darbību reglamentējošos normatīvajos aktos izpēti, turpinot ar pārkāpuma preču konstatēšanas kārtību Valsts ieņēmumu dienestā, un beidzot ar izvērstu muitas darbību reglamentējošo normatīvo aktu piemērošanas…
L'écriture des documents numériques : Approche ergonomique
2007
Cet ouvrage traite de la conception de documents numériques utilisés en contexte professionnel et étudie en particulier les deux thèmes suivants : le découpage de l'information pour la mise en écran, les organisateurs de structure, de navigation et de mise en relief de l'information. L'influence sur la lecture des dispositifs de mise en forme matérielle et des organisateurs de structure et de navigation est souvent méconnue. Aussi les méthodes destinées à tester le rôle des dispositifs de mise en forme revêtent-elles une importance capitale et sont présentées à la fin de cet ouvrage. Les spécificités des supports (document papier et document numérique) sont également abordées en termes de c…
Global representation and multiscale expansion for the Dirichlet problem in a domain with a small hole close to the boundary
2019
For each pair (Formula presented.) of positive parameters, we define a perforated domain (Formula presented.) by making a small hole of size (Formula presented.) in an open regular subset (Formula presented.) of (Formula presented.) ((Formula presented.)). The hole is situated at distance (Formula presented.) from the outer boundary (Formula presented.) of the domain. Thus, when (Formula presented.) both the size of the hole and its distance from (Formula presented.) tend to zero, but the size shrinks faster than the distance. Next, we consider a Dirichlet problem for the Laplace equation in the perforated domain (Formula presented.) and we denote its solution by (Formula presented.) Our ai…
Spatial Cognition 2020/1: Book of abstracts : August 2-4, 2021, University of Latvia
2021
Spatial Cognition is concerned with the acquisition, development, representation, organization, and use of knowledge about spatial objects in real, virtual or hybrid environments and processed by human or artificial agents. Spatial Cognition includes research from different fields insofar as they are concerned with cognitive agents and space, such as cognitive and developmental psychology, linguistics, computer science, geography, cartography, philosophy, neuroscience, and education. Research issues in the field range from the investigation of human spatial cognition to mobile robot navigation, including topics such as wayfinding, spatial planning, spatial learning, internal and external re…
Effects of resistance training frequency on muscle strength, activity and mass during a 24-week intervention in the elderly
2016
Elderly populations are increasingly affected by sarcopenia, dynapenia and osteoporosis. They all increase frailty and decrease quality of life and life-expectancy. Resistance training (RT) has been reported extensively as a tool that can prevent, counter and in some cases reverse the course of the abovementioned diseases. Several studies covering RT adaptations in elderly populations have investigated periods between 6 up to 88 weeks with different frequencies, from 1 to 3 trainings / week and a wide range of intensities (30-85% or one repetition maximum) and different volumes. The aim of this study was to investigate the effect of different training frequencies (one, two or three times / …
Myostatin/activin blocking combined with exercise reconditions skeletal muscle expression profile of mdx mice
2015
Duchenne Muscular Dystrophy is characterized by muscle wasting and decreased aerobic metabolism. Exercise and blocking of myostatin/activin signaling may independently or combined counteract muscle wasting and dystrophies. The effects of myostatin/activin blocking using soluble activin receptor-Fc (sActRIIB-Fc) administration and wheel running were tested alone or in combination for seven weeks in dystrophic mdx mice. Expression microarray analysis revealed decreased aerobic metabolism in the gastrocnemius muscle of mdx mice compared to healthy mice. This was not due to reduced home-cage physical activity, and was further downregulated upon sActRIIB-Fc treatment in enlarged muscles. However…