Search results for "Egle"
showing 10 items of 478 documents
Microstructure of ethylene-1-hexene and ethylene-1-octene copolymers obtained over Ziegler–Natta catalysts supported on MgCl 2 (THF) 2
2001
Abstract The ethylene copolymerizations with 1-hexene or 1-octene in the presence of hydrogen using three catalysts, MgCl 2 (THF) 2 /VOCl 3 /Et 2 AlCl, MgCl 2 (THF) 2 /VCl 4 /Et 2 AlCl, MgCl 2 (THF) 2 /TiCl 4 /Et 2 AlCl, were investigated. It was found that the addition of hydrogen into the copolymerization feed reduces the molecular weight of the copolymers produced and decreases the activity of all the studied catalysts. The microstructure of the copolymers obtained was determined on the basis of 13 C NMR investigations and the reactivity ratios of the comonomers were calculated. The lack of tendency of the olefin comonomers to the creation of the polymer block was confirmed. It was found…
The prevalence of onchocerciasis in Africa and Yemen, 2000-2018: a geospatial analysis.
2022
Abstract Background Onchocerciasis is a disease caused by infection with Onchocerca volvulus, which is transmitted to humans via the bite of several species of black fly, and is responsible for permanent blindness or vision loss, as well as severe skin disease. Predominantly endemic in parts of Africa and Yemen, preventive chemotherapy with mass drug administration of ivermectin is the primary intervention recommended for the elimination of its transmission. Methods A dataset of 18,116 geo-referenced prevalence survey datapoints was used to model annual 2000–2018 infection prevalence in Africa and Yemen. Using Bayesian model-based geostatistics, we generated spatially continuous estimates o…
Predicting the environmental suitability for onchocerciasis in Africa as an aid to elimination planning
2021
Recent evidence suggests that, in some foci, elimination of onchocerciasis from Africa may be feasible with mass drug administration (MDA) of ivermectin. To achieve continental elimination of transmission, mapping surveys will need to be conducted across all implementation units (IUs) for which endemicity status is currently unknown. Using boosted regression tree models with optimised hyperparameter selection, we estimated environmental suitability for onchocerciasis at the 5 × 5-km resolution across Africa. In order to classify IUs that include locations that are environmentally suitable, we used receiver operating characteristic (ROC) analysis to identify an optimal threshold for suitabil…
El oráculo saboteado: ideología y comportamientos guiados en la comedia áurea
2020
[spa] Este artículo propone un análisis del género teatral áureo en uno de sus mecanismos retóricos con mayor capacidad performativa: la función dramática oracular a partir de la cual una voz superior -sea un oráculo, un sueño, una voz interior o cualquier otra posesión transitoria- es escuchada simultáneamente por el receptor-personaje y por el receptor-público. El dramaturgo jerarquiza así la heterogeneidad de discursos presentes en el microcosmos de la comedia y, ofreciendo un silogismo epistemológico, incita a actuar directamente al primero y metonímicamente al segundo. La crítica entendida como sabotaje ofrece unas herramientas críticas que permiten desenmascarar los entresijos de esto…
Diffiniciones de la Sagrada Religion y Cavalleria de Sancta Maria de Montesa y Sanct Iorge, filiacion de la inclita milicia de Calatrava / Hechas por…
1589
Caplletres grav. Sign.: A-L8 Text amb postil·les marginals Reclams
Arginīna fosfāta ietekme uz elementu saturu egļu un priežu skujās
2021
Arginīna fosfāta ietekme uz elementu saturu egļu un priežu skujās. Pastors G., zinātniskais vadītājs Mg. ķīm. Bērtiņš M. Bakalaura darbs, 51 lappuses, 13 tabulas, 39 attēli, 31 literatūras avoti, 7 pielikumi. Latviešu valodā. Darbā veikts elementu salīdzinājums priežu un egļu skujās starp paraugiem, kuri tika apstrādāti ar arginīna fosfātu saturošu minerālmēslojumu sešu mēnešu ilgā augšanas periodā. Paraugu analīzēm izmantota induktīvi saistītās masspektometrijas un rezultāti apstrādāti ar galveno komponentu analīzes metodi. Paraugu priekšapstrāde veikta, izmantojot slapjās mineralizācijas metodi ar skābju maisījumu.
Development and validation of the Brief Parental Burnout Scale (BPBS).
2021
Since parental burnout can have detrimental consequences for parents, couples, and children, easy-to-use, reliable, and valid practical tools for the early detection of parental burnout are required. We developed and validated a brief scale to identify burned-out parents and parents at burnout risk. In Study 1, we developed the 5-item Brief Parental Burnout scale (BPBs) based on the gold standard measure of parental burnout, the Parental Burnout Assessment (PBA). We applied Item Response Theory Graded Response Model (GRM) analyses on the data of 1,725 Finnish parents. Compared against the PBA total score, the five selected items showed both high sensitivity and specificity in screening pare…
Increased Vascularity in Cervicovaginal Mucosa with Schistosoma haematobium Infection
2011
Background Close to 800 million people in the world are at risk of schistosomiasis, 85 per cent of whom live in Africa. Recent studies have indicated that female genital schistosomiasis might increase the risk of human immunodeficiency virus (HIV) infection. The aim of this study is to quantify and analyse the characteristics of the vasculature surrounding Schistosoma haematobium ova in the female genital mucosa. Methodology/Principal Findings Cervicovaginal biopsies with S. haematobium ova (n = 20) and control biopsies (n = 69) were stained with immunohistochemical blood vessel markers CD31 and von Willebrand Factor (vWF), which stain endothelial cells in capillary buds and established blo…
Late Cardiac Events after Childhood Cancer: Methodological Aspects of the Pan-European Study PanCareSurFup.
2016
Background and AimChildhood cancer survivors are at high risk of long-term adverse effects of cancer and its treatment, including cardiac events. The pan-European PanCareSurFup study determined the incidence and risk factors for cardiac events among childhood cancer survivors. The aim of this article is to describe the methodology of the cardiac cohort and nested case-control study within PanCareSurFup.MethodsEight data providers in Europe participating in PanCareSurFup identified and validated symptomatic cardiac events in their cohorts of childhood cancer survivors. Data on symptomatic heart failure, ischemia, pericarditis, valvular disease and arrhythmia were collected and graded accordi…
TLR4 abrogates the Th1 immune response through IRF1 and IFN-β to prevent immunopathology during L. infantum infection
2020
A striking feature of human visceral leishmaniasis (VL) is chronic inflammation in the spleen and liver, and VL patients present increased production levels of multiple inflammatory mediators, which contribute to tissue damage and disease severity. Here, we combined an experimental model with the transcriptional profile of human VL to demonstrate that the TLR4-IFN-β pathway regulates the chronic inflammatory process and is associated with the asymptomatic form of the disease. Tlr4-deficient mice harbored fewer parasites in their spleen and liver than wild-type mice. TLR4 deficiency enhanced the Th1 immune response against the parasite, which was correlated with an increased activation of de…