Search results for "Aka"
showing 10 items of 2351 documents
LU bibliotēkas sniegto pakalpojumu atbilstība LU akadēmiskā personāla informacionālajām vajadzībām
2005
Prezentācijā sniegta informācija par pētījuma "LU bibliotēkas sniegto pakalpojumu atbilstība LU akadēmiskā personāla informacionālajām vajadzībām" rezultātiem
Ueber die zweckmässige Führung des academischen Lebens: ein Leitfaden zu Vorlesungen [Über die zweckmässige Führung des akademischen Lebens...]
1805
RISK FACTORS FOR BILE LEAKAGE AFTER LIVER RESECTION FOR NEOPLASTIC DISEASE
2022
Bioaugmentācijas pielietošana notekūdeņu dūņu pārstrādes stimulēšanai
2020
Pirms dūņas varētu izmantot, kā augsnes mēslojumu, tās ir jāstabilizē, samazinot patogēnu, toksisko un organisko vielu daudzumu, kā arī samazinot smakojošu materiālu rašanos. Darba mērķis bija raksturot bioaugmentācijas un salmu pievienošanas ietekmi notekūdeņu dūņu paraugiem to pārstrādes stimulēšanai. Lai šo mērķi sasniegtu, dažādās kombinācijās, tika izveidoti dūņu, salmu, mikroorganismu un ūdeni saturoši eksperimentālie paraugi. Mikroorganismu elpošanas intensitāte, dažādu fizioloģisko grupu KVV skaits, kā arī veidotā amonjaka daudzums un fitotoksiskums tika uzskatīti kā svarīgākie parametri izvirzītā darba mērķa sasniegšanai. Darba rezultāti sniedz informāciju, ka kviešu salmi un bioau…
Factors controlling plankton productivity, particulate matter stoichiometry, and export fluxin the coastal upwelling system off Peru
2020
Abstract. Eastern boundary upwelling systems (EBUS) are among the most productive marine ecosystems on Earth. The high productivity in surface waters is facilitated by upwelling of nutrient-rich deep waters, with high light availability enabling fast phytoplankton growth and nutrient utilization. However, there are numerous biotic and abiotic factors modifying productivity and biogeochemical processes. Determining these factors is important because EBUS are considered hotspots of climate change, and reliable predictions on their future functioning requires understanding of the mechanisms driving biogeochemical cycles therein. In this study, we used in situ mesocosms to obtain mechanistic un…
The Influence of Spatial Correlation and Severity of Fading on the Statistical Properties of the Capacity of OSTBC Nakagami-m MIMO Channels
2009
This paper deals with the analysis of statistical prop- erties of the capacity of spatially uncorrelated orthogonal space- time block coded (OSTBC) Nakagami-m multiple-input multiple- output (MIMO) channels. We have derived exact closed-form expressions for the probability density function (PDF), cumula- tive distribution function (CDF), level-crossing rate (LCR), and average duration of fades (ADF) of the channel capacity. We have also investigated the statistical properties of the approximated capacity of spatially correlated OSTBC Nakagami-m MIMO channels. The results are studied for different values of the fading parameter m, corresponding to different fading conditions. It is observed …
Differential roles of cAMP and cGMP in megakaryocyte maturation and platelet biogenesis
2012
The cyclic nucleotides cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP) regulate the activity of protein kinase A (PKA) and protein kinase G (PKG), respectively. This process helps maintain circulating platelets in a resting state. Here we studied the role of cAMP and cGMP in the regulation of megakaryocyte (MK) differentiation and platelet formation. Cultured, platelet-producing MKs were differentiated from fetal livers harvested from 13.5 days postcoital mouse embryos. MK development was accompanied by a dramatic increase in cAMP production and expression of soluble guanylate cyclase, PKG, and PKA as well as their downstream targets vasodilator-stimulated ph…
Treatment of Advanced Hormone Receptor-Positive (HR+) HER2-negative Breast Cancer
2019
AbstractThe article gives an overview of current treatment options for metastatic hormone receptor-positive and HER2-negative breast cancer. The focus is on combined therapies, e.g., with CDK4/6 inhibition compared with purely endocrine-based therapies in the pre- and postmenopause, presenting the latest study results. The addition of a CDK4/6 inhibitor to endocrine-based therapy with an aromatase inhibitor or fulvestrant leads to a marked improvement in progression-free survival and is independently beneficial whether palbociclib, ribociclib or abemaciclib is involved. The particular clinical status of inhibition of cyclin-dependent kinases argues for its use in the first-line treatment of…
The gait is less stable in children with cerebral palsy in normal and dual-task gait compared to typically developed peers
2021
There is limited evidence about gait stability and its alteration by concurrent motor and cognitive tasks in children with cerebral palsy (CP). We examined gait stability and how it is altered by constrained cognitive or motor task in CP and their typically developed (TD) controls. Gait kinematics were recorded using inertial-measurement units (IMU) from 18 patients with hemiplegia (13.5 +/- 2.4 years), 12 with diplegia (13.0 +/- 2.1 years), and 31 TD controls (13.5 +/- 2.2 years) during unconstrained gait, and motor (carrying a tray) and cognitive (word naming) task constrained gait at preferred speed (similar to 400 steps/task). Step duration, its standard deviation and refined-compound-m…
Toimintaterapeuttien ja vanhempien yhteistyö toimintaterapiassa lapsille, joilla on CP-oireisto
2017
Tutkimuksessa selvitettiin toimintaterapeuttien ja vanhempien välistä yhteistyötä Kelan järjestämässä vaikeavammaisten kuntoutuksessa lapsille, joilla oli CP-oireisto. Tutkimuksessa käytettiin aineistoa, joka oli kerätty Kelan kuntoutuksen avopalveluja tuottaneilta toimintaterapeuteilta vuosina 2008–2009. Aineisto kerättiin The Measure of Processes of Care for Service Providers -itsearviointimittarilla (MPOC-SP), jolla kysyttiin palveluntuottajilta, kuinka paljon he olivat toteuttaneet asiakaslähtöisiä toimintatapoja yhteistyössään lasten vanhempien kanssa. Tämän tutkimuksen aineisto analysoitiin SPSS-ohjelmalla. Tutkimuksen tuloksina oli, että lasta kuntouttavista toimintaterapeuteista 92 …