1,721,203 research outputs found
Adult activity and larval abundance of stem weevils and their parasitoids at different crop densities of oilseed rape
No full textAdult activity and larval abundance of stem weevils and their parasitoids at different crop densities of oilseed rape
No full textPhototoxic and photoallergic reactions
No full textMany artificial or naturally occurring substances are included under the term photosensitizer. After ultraviolet (UV) exposure such agents can lead to increased photosensitivity and subsequently to phototoxic or photoallergic reactions in the skin. From clinical observations and comprehensive studies typical reaction patterns can be deduced which can clarify the difference between phototoxic and photoallergic dermatitis.An illuminated epicutaneous test based on conventional epicutaneous tests, the photopatch test, was developed as a screening method for identification of photosensitizers. The diagnostic specificity and sensitivity of the test is comparable to conventional epicutaneous testing. If possible photosensitizers do not cause any relevant reactions with the photopatch test, other test procedures, such as the photoprick, photoscratch and illuminated intracutaneous tests are available. If the actual photosensitizer is not the test substance but a metabolite of the test substance, a systemic photoprovocation test can be indicated
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
An epidemiological study on Giardia and Cryptosporidium spp. in dogs and wildlife in Calgary, AB: potential implications for public health and park management.
No full textTopographies of Conduct? Ethical Implications of the Ekphrastic Description of Jerusalem in Rev 21
No full textTopographies of Conduct? Ethical Implications of the Ekphrastic Description of Jerusalem in Rev 21
No full textVariations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Phototoxische und photoallergische Reaktionen
No full textZusammenfassungBasierend auf einer Wechselwirkung zwischen elektromagnetischer Strahlung meist aus dem UV-Bereich mit einem Photosensibilisator kann eine photoallergische oder eine phototoxische Dermatitis ausgelöst werden. Unter dem Begriff „Photosensibilisatoren“ werden sowohl synthetisch hergestellte als auch natürlich vorkommende Substanzen verstanden, die nach vorheriger Exposition mit Strahlung meist aus dem UV-A-Bereich auf der Haut phototoxische oder photoallergische Reaktionen hervorrufen können. Im Allgemeinen werden phototoxische Reaktionen sehr viel häufiger beobachtet als photoallergische Dermatitiden. Zum Nachweis derartiger Photosensibilisatoren dient eine belichtete Variante des herkömmlichen Epikutan-Tests, der sog. Photopatch-Test. Bei einem vermutlich falsch negativen Photopatch-Test-Befund können darüber hinaus der Photoprick-, Photoscratch- oder der belichtete Intrakutan-Test herangezogen werden. Ist jedoch erst ein Metabolit einer Testsubstanz der eigentliche Photosensibilisator, dann kommt noch die systemische Photoprovokation als Nachweisverfahren infrage. Da im Einzelfall phototoxische von photoallergischen Testreaktionen klinisch nur schwer abzugrenzen sind, können typische Reaktionsmuster, die im Rahmen von sehr umfangreichen Studien eruiert wurden, bei der Differenzierung zwischen phototoxischen und photoallergischen Dermatitiden hilfreich sein. </jats:p
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