Search results

Filter

Filetype

Your search for "*" yielded 532234 hits

Oral Colonization by Entamoeba gingivalis and Trichomonas tenax : A PCR-Based Study in Health, Gingivitis, and Periodontitis

Background: The etiology of periodontitis remains unclear, as is the place of gingivitis in its pathophysiology. A few studies linked the colonization by oral parasites (Entamoeba gingivalis and Trichomonas tenax) to periodontal disease and its severity. The aim of the current study was to estimate the prevalence of these oral parasites among healthy individuals, and in patients with gingivitis an

Aβ/APP-induced hyperexcitability and dysregulation of homeostatic synaptic plasticity in models of Alzheimer’s disease

The proper function of the nervous system is dependent on the appropriate timing of neuronal firing. Synapses continually undergo rapid activity-dependent modifications that require feedback mechanisms to maintain network activity within a window in which communication is energy efficient and meaningful. Homeostatic synaptic plasticity (HSP) and homeostatic intrinsic plasticity (HIP) are such nega

Quench and field emission diagnostics for the ESS medium-beta prototypes vertical tests at LASA

In order to investigate the possible causes of premature thermal breakdown and performance degradation, several diagnostic techniques have been employed during the vertical tests of the Fine and Large Grain ESS Medium Beta prototypes cavities. The whole equipment, which includes second sound, fast thermometry, photodiode x ray detectors and external NaI scintillator and proportional counter, is he

Modeling the energy consumption of potable water reuse schemes

Potable reuse of municipal wastewater is often the lowest-energy option for increasing the availability of fresh water. However, limited data are available on the energy consumption of potable reuse facilities and schemes, and the many variables affecting energy consumption obscure the process of estimating energy requirements. By synthesizing available data and developing a simple model for the e

Evolution of the sex pheromone communication system in ostrinia moths

It remains a conundrum in the evolution of sexual communication how the signals and responses can co-ordinate the changes during speciation. The genus Ostrinia contains several closely related species as well as distinctive strains with pheromone polymorphism and represents an ex-ample of ongoing speciation. Extensive studies in the genus, especially in the species the European corn borer O. nubil

Adaptive travel behaviors to cope with covid-19 : A swedish qualitative study focusing on everyday leisure trips

The COVID-19 pandemic has caused a rapid change in travel behavior for different types of trips, including everyday social and recreational leisure trips. People have used adaptive travel behaviors to cope with the new circumstances for activities and transport. Due to the Swedish strategy focusing on more voluntary restrictions, people have had reason to consider which trips and activities to ski

On the role of softness in ionic microgel interactions

Thermoresponsive microgels are a popular model system to study phase transitions in soft matter, because temperature directly controls their volume fraction. Ionic microgels are additionally pH-responsive and possess a rich phase diagram. Although effective interaction potentials between microgel particles have been proposed, these have never been fully tested, leading to a gap in our understandin

Landscape transitions in Tarraco: Extending the understanding of provincial communities and their integration into the Roman Empire : European Association of Archaeologists Conference (EAA) 2021

The Iberian Peninsula has been repeatedly characterised by its wide diversity of landscapes and of communities inhabiting them in Antiquity. This circumstance has hindered the possibility of developing holistic interpretations of cultural change experienced by these communities. However, recent research (e.g. Moreno Escobar, Ojeda Rivera and García Sanjuán 2020) has highlighted how the analysis of

A Historical Perspective on Ageing and Capability

This chapter discusses the value of a capability approach in historical research on older people. Historians are generally focused on studying continuity and change over time. Their research often aims at explaining how and why certain phenomena appear and take different shapes. Capability is a way of capturing an individual’s ability to live a meaningful life, or a life that they perceive as good

It’s a long walk: Lasting effects of maternity ward openings on labour market performance

Being born in a hospital versus having a traditional birth attendant at home represents the most common early life policy change worldwide. By applying a difference-in-differences approach to register-based individual-level data on the total population, this paper explores the long-term economic effects of the opening of new maternity wards as an early life quasi-experiment. It first finds that th

p53-mediated differentiation of the erythroleukemia cell line K562

The tumor suppressor gene p53 can mediate both apoptosis and cell cycle arrest. In addition, p53 also influences differentiation. To further characterize the differentiation inducing properties of p53, we overexpressed a temperature-inducible p53 mutant (ptsp53Val135) in the erythroleukemia cell line K562. The results show that wild-type p53 and hemin synergistically induce erythroid differentiati

Involvement of the retinoblastoma protein in monocytic and neutrophilic lineage commitment of human bone marrow progenitor cells

The retinoblastoma gene product (pRb) is involved in both cell cycle regulation and cell differentiation. pRb may have dual functions during cell differentiation: partly by promoting a cell cycle brake at G(1) and also by interacting with tissue-specific transcription factors. We recently showed that pRb mediates differentiation of leukemic cell lines involving mechanisms other than the induction