Ingestion of catfish by freshwater stingray: possible mistake or inexperience

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Intracellular imaging of nanoparticles: is it an elemental mistake to believe what you see?

In order to understand how nanoparticles (NPs <100 nm) interact with cellular systems, potentially causing adverse effects, it is important to be able to detect and localize them within cells. Due to the small size of NPs, transmission electron microscopy (TEM) is an appropriate technique to use for visualizing NPs inside cells, since light microscopy fails to resolve them at a single particle level. However, the presence of other cellular and non-cellular nano-sized structures in TEM cell samples, which may resemble NPs in size, morphology and electron density, can obstruct the precise intracellular identification of NPs. Therefore, elemental analysis is recommended to confirm the presence of NPs inside the cell. The present study highlights the necessity to perform elemental analysis, specifically energy filtering TEM, to confirm intracellular NP localization using the example of quantum dots (QDs). Recently, QDs have gained increased attention due to their fluorescent characteristics, and possible applications for biomedical imaging have been suggested. Nevertheless, potential adverse effects cannot be excluded and some studies point to a correlation between intracellular particle localization and toxic effects. J774.A1 murine macrophage-like cells were exposed to NH2 polyethylene (PEG) QDs and elemental co-localization analysis of two elements present in the QDs (sulfur and cadmium) was performed on putative intracellular QDs with electron spectroscopic imaging (ESI). Both elements were shown on a single particle level and QDs were confirmed to be located inside intracellular vesicles. Nevertheless, ESI analysis showed that not all nano-sized structures, initially identified as QDs, were confirmed. This observation emphasizes the necessity to perform elemental analysis when investigating intracellular NP localization using TEM.

The melting-pot mistake /

Includes bibliographical references and index.

Human osteogeny explained in two lectures, read in the Anatomical Theatre of the Surgeons of London, July the first and second, anno 1731 : in which not only the beginning and gradual increase of the bones of human foetuses are described, but also the nature of ossification is considered, and the general notion, that all bones are formed from cartilages, is demonstrated to be a mistake /

Mode of access: Internet.

The mistake. A comedy,

Adaptation from Molière's "Dépit amoureux," 1653, by Vanbrugh andBetterton. cf. Dict. nat. biog.

Mr. Wallingford's mistake /

Mode of access: Internet.

Common mistake:theoretical justification and remedial inflexibility

Discusses the implications for the doctrine of common mistake of the Court of Appeal ruling in Great Peace Shipping Ltd v Tsavliris Salvage (International) Ltd on whether a contract for the hire of a ship was void on the ground of common mistake regarding the position of the ship. Reviews the origins of the doctrine of common mistake and the relationship between the doctrine and the implication of terms. Considers the determination of impossibility. Examines the role of equity in common mistake and remedial equitable intervention.

Brilliant mistake! Essays on incidents of management mistakes and mea culpa

Purpose – The purpose of this paper is to examine students’ perceptions of managerial mistakes and why (and why not) managers admit mistakes. Design/methodology/approach – This paper provides a reflective account of how students’ perceive management mistakes and deal with admitting “mea culpa” – “I am to blame”. Findings – The findings show a range of attitudes: they highlight the intermingling pressures associated with the cultural environment and mistakes; they identify media characteristics and its influences on mistakes and mea culpa; they highlight ceremonial processes and tasks that shape and influence the declaration of mea culpa; and they identify how the psychology and sociology of mistakes confronts and affects students. Taken together, the study highlights the varying degrees of wariness that is carried forward by the students from vicariously learning about management mistakes. Originality/value – This paper links up with recent discussions on retail failure and retail pedagogy. It is hoped that this paper will encourage more academics to address, and engage with, management mistakes creatively in their teaching.

A Public-Private Partnership Magyarországon– egy félreértés volt? (Public-Private Partnerships in Hungary – was it a mistake?)

Az elemzés a PPP (Public-Private Partnership) magyarországi felfutásának és visszaesésének izgalmas éveit tárja fel, amelynek alapján megállapítható, hogy a magyar gyakorlatban körvonalazódó PPP nem az a PPP, amely a nemzetközi tapasztalatok alapján a közfeladatok megvalósításának közgazdaságilag megalapozott eszköze lehetne. A szerző úgy gondolja, hogy nem a PPP-módszer elvetése a megfelelő válasz a létező hibákra, hanem alkalmazásának módján kell javítani, a fokozatosan halmozódó tapasztalatok értő felhasználásával. ______ Public-Private Partnership (PPP) has quickly become a well-known phenomenon in Hungary. Despite its proliferation in various areas of activities, and the fact that most of these projects are still running, interest for starting new PPP projects has ceased, and even the cancellation of the project has become an issue. My research objective was to understand better how the concept of PPP has been interpreted by the wider public, through the assessment of the projects appearance in the main economic newspapers. The analysis shows that what has been implemented as PPP projects in Hungary are conceptually different from what PPP as an economically justified concept substantiates. PPP seems to be a phenomenon grossly misunderstood in Hungary.

A prosodic mistake in the Latin of the Diccionario de la Lengua Española: Astur, -uris

In this paper we point out a prosodic mistake in the Latin etymology Astur, -uris, which is found in the two last editions of the Diccionario de la Lengua Española (twenty-second and twentythird – Edición del Tricentenario) and put forward its correction. We also analyse the entry astur in the prior editions of the Diccionario in order to recognise the changes undergone by the Latin term.

Analise da disciplina de educação fisica especial nas Institutições de Ensino Superior publicas do estado do Parana

Universidade Estadual de Campinas . Faculdade de Educação Física

Teste de banco com carga continua para analise do volume de oxigenio (VO2) predito e analisado por tempo de esforço em pessoas treinadas (TRD), ativas (ATV) e destreinadas (DTR) a partir dos 13 anos : proposta de validação

Universidade Estadual de Campinas . Faculdade de Educação Física