1,721,152 research outputs found
FIGURE 9. Centaurea heratensis Rech. f in A revision of Centaurea sect. Phaeopappus (Asteraceae, Cardueae)
No full textFIGURE 9. Centaurea heratensis Rech. f. & Koeie (Koeie 3817, W). A and B. habit. C. basal leaves. Scale A–C = 2 cm.Published as part of Ranjbar, Massoud & Negaresh, Kazem, 2013, A revision of Centaurea sect. Phaeopappus (Asteraceae, Cardueae), pp. 1-40 in Phytotaxa 123 (1) on page 20, DOI: 10.11646/phytotaxa.123.1.1, http://zenodo.org/record/508494
A new record species for the flora of Turkey Pimpinella nephrophylla Rech. f. and H. Riedl. (Apiaceae)
No full textGüneydoğu Anadolu bölgesinde Diyarbakır'dan toplanan Pimpinella nephrophylla Rech. f. & H. Riedl (Apiaceae), Türkiye florası için yeni bir kayıttır. Tür, P. flabellifolia (Boiss.) Bent. & Hook, ex Drude, P. sintenisii Wollf ve P. paucidentata Matthews'e oldukça benzer olup bu türler ile karşılaştırılmıştır. Makalede P. nephrophylla'nın fotoğrafları ve Türkiye'deki dağılışı verilmişt
Phytochemical and Biological Studies of <i>Nepeta asterotricha</i> Rech. f. (Lamiaceae): Isolation of Nepetamoside
No full textThe n-butanolic extract, from an Iranian specimen of Nepeta asterotricha Rech. f. (NABE), displayed anti-inflammatory effects on lipopolysaccharide (LPS)-stimulated J774A.1 macrophages, which reduced nitrites and cytokines production. Bioassay guided fractionation of the extract led to the isolation of four iridoid glycosides, including a new one known as nepetamoside (1), one hexenyl-diglycoside, and some polyphenol and flavonoid components. None of the isolated iridoid components displayed significant effects on nitrites formation in an in vitro LPS-induced model of inflammation, thus suggesting that the plant anti-inflammatory effect is probably due to a synergistic action among its constituents
Placental Chorioangioma
No full textChorioangioma is a primary benign tumour with predominantly vascular involvement. It is found in 1% of all placentas undergoing careful and systematic histopathological examination. A rarer form is the clinically relevant chorioangioma which is likely to be associated with complications like polyhydramnios, pre-term birth, IUGR, anemia, fetal congested heart decompensation, non-immune fetal hydrops, perinatal mortality. Chorioangioma generally presents an increased consistency compared to adjacent tissues; it tends to be single, rounded and reddish-brown in colour. The preferred localisation is on the fetal side of the placental disk and it may protrude into the amniochorial cavity; the volume is variable (but rarely exceeds a maximum diameter of 4-5 cm). Of the known 3 histotypes of chorioangioma (angiomatous, cellular, degenerative), the first is the most insidious: the intratumoral vascular bed represents an arteriovenous shunt in the systematic circulation of the fetus #150; sometimes causing dramatic hemodynamic consequences #150; as well as a functional empty space (blood short-circuited through the neoplasm circulation would be deprived of the possibility of adequate gaseous and metabolic exchanges at the level of the terminal villi). Having been identified as early as 1798, chorioangioma has recently been the subject of renewed interest for the following reasons: 1) the possibility of prenatal diagnosis, prohibited to earlier generations of authors, following the development of instrumental techniques like ultrasonography and flowmetry; 2) the acquisition of new knowledge regarding the physiopathology of the tumour and the etiopathogenesis of its main complications; 3) improved prognostic capacity accompanied by better prospects for correct management; 4) wider awareness of the range of therapeutic options available
L'incompetenza cervicale quale fattore di rischio di parto pretermine: ruolo del cerchiaggio cervicale nell'attuale pratica ostetrica
No full textIl parto pretermine (PP)costituisce ad oggi la principale causa di mortalità e morbilità neonatale. Tra i fattori di rischio di PP vi è anche l'incompetenza cervicale (IC), la cui diagnosi viene formulata prevalentemente durante la gravidanza e si basa sul reperto ecografico di modificazioni morfometriche della cervice. Alla luce delle attuali evidenze scientifiche, in presenza di significative modificazioni morfometriche del collo uterino, il cerchiaggio dovrebbe essere raccomandato quando: 1) età gestazionale < 24 settimane; 2) anamnesi con elevato rischio"ex ante" di PP; 3) lunghezza residua del collo non superiore ai 2 cm; 4) esclusione preliminare di anomalie fetali, infezioni del tratto genitale inferiore, contrazioni uterine
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
Variations 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
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Qualitative and quantitative analysis of polyphenols of Geranium macrorrhizum L. and G. dalmaticum (Beck) Rech. f., Geraniaceae
Full text linkU okviru ovoga diplomskog rada provedena je kvalitativna i kvantitativna analiza polifenola vrsta
Geranium macrorrhizum L. i G. dalmaticum (Beck) Rech. f. (Geraniaceae). Prisutnost polifenolnih
tvari dokazana je općim reakcijama stvaranja obojenih produkata ili taloga. Kvantitativna analiza
ukupnih polifenola (UP), trjeslovina (T), flavonoida (F) i fenolnih kiselina (FK) provedena je
spektrofotometrijskim metodama. Sadržaj analiziranih polifenolnih tvari za vrstu Geranium
macrorrhizum iznosio je: 21,55±0,40% (UP), 15,77±0,50% (T), 0,55±0,00% (F) i 1,53±0,05% (FK).
Sadržaj analiziranih polifenolnih tvari za vrstu Geranium dalmaticum iznosio je: 21,76±0,07% (UP),
15,58±0,05% (T), 0,51±0,01% (F) i 1,33±0,13%. (FK). Provedena kvalitativna i kvantitativna
analiza predstavlja prilog znanstvenom istraživanju vrsta roda Geranium i upotpunjuje dosadašnje
spoznaje o fitoterapijskom potencijalu vrsta G. macrorrhizum i G. dalmaticum, posebice u odnosu
na sadržaj bioaktivnih polifenolnih tvari.In this work, qualitative and quantitative analysis of polyphenols of Geranium macrorrhizum L. and G.
dalmaticum (Beck) Rech. f. (Geraniaceae) was carried out. The presence of polyphenols was proven by
using general reactions of developing colored products and precipitates. Quantitative analysis of total
polyphenols (TP), tannins (T), flavonoids (F), and phenolic acids (PA) was carried out using
spectrophotometric methods. The contents of analyzed polyphenolic compounds for Geranium
macrorrhizum were as follows: 21.55±0.40% (TP), 15.77±0.50% (T), 0.55±0.00% (F), and 1.53±0.05%
(PA). The contents of analyzed polyphenolic compounds for Geranium dalmaticum were as follows:
21.76±0.07% (TP), 15.58±0.05% (T), 0.51±0.01% (F), and 1.33±0.13%. (PA). Performed qualitative
and quantitative analysis is a contribution to the scientific study of genus Geranium and completes the
existing knowledge about phytotherapeutic potential of species G. macrorrhizum i G. dalmaticum,
especially in relation to the content of bioactive polyphenolic substances
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