Search results for "Riski"

Sulfate sensitivity of aquatic organism in soft freshwaters explored by toxicity tests and species sensitivity distribution

2023

Elevated concentrations of sulfate in waterways are observed due to various anthropogenic activities. Elevated levels of sulfate can have harmful effects on aquatic life in freshwaters: sulfate can cause osmotic stress or specific ion toxicity in aquatic organisms, especially in soft waters where Ca2+ and Mg2+ concentrations are low. Formerly, chronic toxicity test data in soft water have been scarce. The chronic and acute sulfate toxicity tests conducted with aquatic organisms from 10 families across various trophic levels in this study multiplied the number of tests conducted in soft freshwater conditions and enabled derivation of the species sensitivity distribution (SSD) and sulfate haz…

Elastīgais parametriskais modelis izdzīvošanas datiem ar konkurējošiem riskiem

2015

Konkurējošie riski ir izplatīta parādība izdzīvošanas analīzē. Tie rodas, kad subjekts atrodas vairāku savstarpēji izslēdzošu notikumu riska zonā. Populārākā metode, pētot šāda veida datus, ir Deivida Koksa semi-parametriskā modeļa izmantošana. Darbā ir aplūkots alternatīvais variants izdzīvošanas datiem ar konkurējošiem riskiem – elastīgais parametriskais modelis, kas sniedz gludus novērtējumus galvenajiem raksturlielumiem – konkrēto cēloņu riskam un kumulatīvo biežumu funkcijai. Turklāt, izmantojot šo modeli, ir viegli iekļaut no laika atkarīgus ietekmējošos mainīgos. Darbā tiek aprakstīta konkurējošo risku elastīgā parametriskā modeļa būtība, un metode ir salīdzināta ar Koksa modeli. Ir …

Manipulating Individual Decisions and Environmental Conditions Reveal Individual Quality in Decision-Making and Non-Lethal Costs of Predation Risk

2012

Habitat selection is a crucial decision for any organism. Selecting a high quality site will positively impact survival and reproductive output. Predation risk is an important component of habitat quality that is known to impact reproductive success and individual condition. However, separating the breeding consequences of decision-making of wild animals from individual quality is difficult. Individuals face reproductive decisions that often vary with quality such that low quality individuals invest less. This reduced reproductive performance could appear a cost of increased risk but may simply reflect lower quality. Thus, teasing apart the effects of individual quality and the effect of pr…

Cross-sectional associations between cardiorespiratory fitness and NMR-derived metabolic biomarkers in children : the PANIC study

2022

Objective: Cardiorespiratory fitness has been inversely associated with cardiovascular risk across the lifespan. Some studies in adults suggest that higher cardiorespiratory fitness is associated with cardioprotective metabolite profile, but the evidence in children is lacking. Therefore, we investigated the cross-sectional association of cardiorespiratory fitness with serum nuclear magnetic resonance derived metabolic biomarkers in children. Methods: A population sample of 450 children aged 6–8 years was examined. Cardiorespiratory fitness was assessed by a maximal exercise test on a cycle ergometer and quantified as maximal power output normalised for lean body mass assessed by dual-energ…

Kansalaisten hyvä kunto tukee kansantaloutta

2023

Fiziskie un kognitīvie riski gaisa kuģa salona apkalpes locekļiem un preventīvie pasākumi

2019

Pirmajā daļā apkopota un analizēta literatūra par gaisa kuģa salona apkalpes locekļu profesiju, kā arī fiziskajiem un kognitīvajiem riskiem un to ietekmi uz cilvēku. Otrajā daļā aprakstītas pētījumā pielietotās metodes, trešajā daļā tiek apkopoti pētījumā iegūtie dati un izklāstīta rezultātu analīze. Izstrādāti preventīvie un aizsardzības pasākumi. Iegūtie pētījuma rezultāti ļauj secināt, ka gaisa kuģa salona apkalpes locekļi vispārējam riku novērtējumam ir pakļauti nenozīmīgam riskam (I pakāpe). Gaisa kuģa salona apkalpes locekļiem ir dažāda darba intensitāte, kas raksturo arī mainīgo nogurumu un psihoemocionālo stāvokli. Izstrādātas praktiskās rekomendācijas. Izmantotās metodes: darbiniek…

Risk and protective factors for (internet) gaming disorder: A meta-analysis of pre-COVID studies.

2023

This large-scale meta-analysis aimed to provide the most comprehensive synthesis to date of the available evidence from the pre-COVID period on risk and protective factors for (internet) gaming disorder (as defined in the DSM-5 or ICD-11) across all studied populations. The risk/protective factors included demographic characteristics, psychological, psychopathological, social, and gaming-related factors. In total, we have included 1586 effects from 253 different studies, summarizing data from 210557 participants. Apart from estimating these predictive associations and relevant moderating effects, we implemented state-of-the-art adjustments for publication bias, psychometric artifacts, and o…

Rare variant analyses across multiethnic cohorts identify novel genes for refractive error

2023

Refractive error, measured here as mean spherical equivalent (SER), is a complex eye condition caused by both genetic and environmental factors. Individuals with strong positive or negative values of SER require spectacles or other approaches for vision correction. Common genetic risk factors have been identified by genome-wide association studies (GWAS), but a great part of the refractive error heritability is still missing. Some of this heritability may be explained by rare variants (minor allele frequency [MAF] ≤ 0.01.). We performed multiple gene-based association tests of mean Spherical Equivalent with rare variants in exome array data from the Consortium for Refractive Error and Myopi…

The challenges of GxE research : A rejoinder

2017

Geriatrisko pacientu aprūpe ģimenes ārsta praksē

2018

Aprūpes nodrošināšana geriatriskam pacientam ir ļoti nopietns un apjomīgs darbs. Šim darbam ir jābūt kvalitatīvam un ir jāiesaista arī ģimene, lai palīdzētu uzlabot pacienta vispārīgo stāvokli. Bakalaura darba tēma - Geriatrisko pacientu aprūpe ģimenes ārsta praksē. Bakalaura darba mērķis ir noskaidrot biežākās geriatriska pacienta veselības problēmas un aprūpi ģimenes ārsta praksē. Bakalaura darbā izvirzītais jautājums ir - Kādas ir aprūpes problēmas geriatriskiem pacientiem ģimenes ārsta praksē? Lai sasniegtu izvirzīto mērķi, tika veikta zinātniskās literatūras analīze un pētījums. Bieži vien pacienti nāk pie ārsta jau novēloti, kas saslimšana jau ir progresējusi, vai kad jau pacients tic…