Expiratory flow limitation (EFL) can occur in mechanically ventilated patients with chronic obstructive pulmonary disease and other disorders. It leads to dynamic hyperinflation with ensuing deleterious consequences. Detecting EFL is thus clinically relevant. Easily applicable methods however lack this detection being routinely made in intensive care. Using a simple mathematical model, we propo...

BACKGROUND The eukaryotic elongation factor EF-1alpha (also known as EF1A) catalyzes aminoacyl-tRNA binding by the ribosome during translation. Homologs of this essential protein occur in all domains of life, and it was previously thought to be ubiquitous in eukaryotes. Recently, however, a number of eukaryotes were found to lack EF-1alpha and instead encode a related protein called EFL (for EF...

This article reviews Vygotsky’s sociocultural theory as one of the current frameworks in the study of learning and teaching processes. Arguing that learners’ interaction is vital for language learning in English as a Foreign Language (EFL) classrooms and that the teacher’s perceptions and expectations can foster or discourage this interaction, the article shows how the sociocultural model of le...

We have previously observed large phasic variations of respiratory mechanical impedance in chronic obstructive pulmonary disease (COPD) patients mechanically-ventilated for acute respiratory failure, and postulated that they were due to expiratory flow limitation (EFL). The aim of this study was to test that assumption experimentally and to assess the value of impedance for automatic and noninv...

_______________ A lack of reading quantity in EFL (English as a Foreign Language) classrooms has remained one of the most serious problems faced by teachers of English in Japan. Although the extensive reading (ER) approach is regarded as having significant potential in addressing this problem, it is not used in many EFL classrooms. This study investigates the effect of a quasi-extensive reading...

This study was a cross-sectional investigation into the request strategies used by Iranian learners of English as a Foreign Language and Australian native speakers of English. The sample involved 96 BA and MA Persian students and 10 native speakers of English. A Discourse Completion Test (DCT) was used to generate data related to the request strategies used by each group. Selection of request s...

Little is known about the influence of language background in problem-based learning (PBL) tutorial groups on group processes and students’ academic achievement. This study investigated the relationship between language background, secondary school score, tutorial group processes, and students’ academic achievement in PBL. A validated tutorial group effectiveness questionnaire was administered ...

Patients with severe COPD often exhale along the same flow-volume curve during quite breathing as during forced expiratory vital capacity manoeuvre, and this has been taken as indicating expiratory flow limitation at rest (EFL(T)). Therefore, EFL(T), namely, attainment of maximal expiratory flow during tidal expiration, occurs when an increase in transpulmonary pressure causes no increase in ex...

In this study the author draws on Jane Willis’ TBL framework and examines its effects on the improvement of EFL learners’ writing competence when such a framework is applied to college writing classrooms in Chinese EFL settings, and thus tentatively explores the feasibility of the task-based approach to the teaching of EFL writing. Results of this study are derived from discussion concerned wit...

Translation elongation factor-1 alpha (EF1A) and the related GTPase EF-like (EFL) are two proteins with a complex mutually exclusive distribution across the tree of eukaryotes. Recent surveys revealed that the distribution of the two GTPases in even closely related taxa is frequently at odds with their phylogenetic relationships. Here, we investigate the distribution of EF1A and EFL in the alve...