180,045 research outputs found
Bertolonia angustipetala Bacci & R. Goldenberg
No full text<i>2.</i> <i>Bertolonia angustipetala</i> Bacci & R. Goldenberg (in Bacci <i>et al</i>. 2018: 271). Figures 2b, 4. <p>Herbs ca. 20 cm tall, terrestrial or epiphytic. Stem 2–3 mm wide, rounded, moderately glandulose-punctate (trichomes less than 0.1 mm long). Leaves opposite; petioles 1–2.2 cm long, quadrangular, moderately glandulose-punctate and sparsely glandulose-pilose (trichomes ca. 0.5 mm long); blades 3.9–8 × 1.8–3.7 cm, flat, elliptic, base rounded to shortly attenuate, apex acute, margins entire, sparsely ciliate, adaxial surface dark green, sparsely glandulose-punctate (trichomes less than 0.1 mm long, brownish), abaxial surface vinaceous, sparsely to moderately glandulose-punctate (trichomes less than 0.1 mm long, brownish), main veins 3, plus two pairs that do not reach the leaf apex, basal. Inflorescences terminal, 6–17 cm long (6.3–8.7 cm long in infructescences), branches sparsely to densely glandulosepunctate, sparsely glandulose-punctate when old. Bracts not seen; bracteoles ca. 1 mm long, narrow-lanceolate, apex acute, both surfaces glandulose-punctate. Hypanthium 4–5 × 3.5–4 mm, short-terete, glandulose-punctate and glandulose-villose. Sepals elliptic, apex rounded to acute, margins entire, ciliate, both surfaces glandulose-punctate and glandulose-villose. Petals 7–8.5 × 1.5–2 mm, light pink, linear-lanceolate, base slightly uncinate, apex apiculate, the apiculum ca. 1 mm long, with a caducous gland head, margins entire, eciliate, both surfaces papillose, otherwise glabrous. Stamens 7–8 mm long; filaments 3.5–4 mm long; anthers 3.5–4 mm long, cream colored, oblong-subulate, surface smooth undulate, pore rounded, non-thickened margins, introrse; connective shortly prolonged (ca. 0.5 mm), unappendaged. Style 5–7 mm long, straight or curved at the apex, glabrous. Fruits ca. 0.6 × 0.8 cm. Seeds reniform.</p> <p> <b>Examined material:</b> — BRAZIL. Bahia: Wenceslau Guimarães, <i>Bacci 26</i> 7 (UEC!); <i>Goldenberg 20</i> 77 (HURB!, UPCB!); <i>Jardim, J.G. 5040</i> (CEPEC!, NY, UPCB!).</p> <p> <b>Conservation Status:</b> <i>— Bertolonia angustipetala</i> has an EOO of 0.010 km ² and AOO of 0.035 km ², and should be classified as “Critically Endangered” (CR), following IUCN (2017) categories. This species has been collected only three times within the “Estação Ecológica Estadual Wenceslau Guimarães”.</p> <p> <b>Notes:</b> — <i>Bertolonia angustipetala</i> is endemic to Bahia, occurring in montane rainforests (Fig. 3b). Collected with flowers in December and fruits in May and December. <i>Bertolonia angustipetala</i> is characterized by the small (3.9–8 × 1.8–3.7 cm) and elliptic leaf blades, these sparsely glandulose-punctate, and linear-lanceolate and apiculate petals. It shares with <i>Bertolonia cuspidata</i> Bacci & Amorim in Bacci <i>et al</i>. (2018: 772) the membranaceous, glandulosepunctate leaf blades with entire margins. However, <i>Bertolonia angustipetala</i> differs by the smaller leaf blades (3.9–8 × 1.8–3.7 cm) with an acute apex (<i>vs.</i> bigger leaf blades,7.3–12.2 × 3.9–6 cm, with a cuspidate apex in <i>B. cuspidata</i>) and linear-lanceolate petals (<i>vs.</i> elliptic or obovate petals; Bacci <i>et al</i>. 2018). For more details, see notes under <i>B. angustipetala</i> in Bacci <i>et al</i>. (2018) and Table 1.</p>Published as part of <i>Bisewski, Gessica C. A., Bacci, Lucas F., Amorim, André M. & Goldenberg, Renato, 2022, The Genus Bertolonia (Melastomataceae) In The State Of Bahia, Brazil, pp. 153-183 in Phytotaxa 548 (2)</i> on pages 160-161, DOI: 10.11646/phytotaxa.548.2.3, <a href="http://zenodo.org/record/6597678">http://zenodo.org/record/6597678</a>
Bertolonia kollmannii Bacci & R. Goldenberg
No full text8. Bertolonia kollmannii Bacci & R.Goldenberg (in Bacci et al. 2018: 775). Figure 11. Herbs 10–15 cm tall, rupiculous or terrestrial. Stem 1–2 mm wide, rounded, moderately to densely glandulose-punctate (trichomes less than 0.1 mm long) and sparsely to moderately glandulose-villose (trichomes 1.9–2.5 mm long). Leaves opposite; petioles 1–4 cm long, quadrangular, moderately glandulose-punctate and sparsely to moderately glandulose-villose (trichomes 1.2–1.7 mm long); blades 2.4–5.5 × 1.6–4.7 cm, bullate, ovate, base cordate, apex acute, margins crenate, moderately ciliate, adaxial surface green, sparsely to moderately glandulose-punctate and sparsely to moderately glandulose-villose (trichomes 2.5–2.8 mm long, brownish), abaxial surface vinaceous, sparsely to moderately glandulose-punctate and sparsely glandulose-villose (trichomes 0.6–1 mm long, brownish), main veins 3, plus one pair that do not reach the leaf apex, basal. Inflorescences terminal, pseudo-lateral when old, 4.9–6.1 cm long (5.3–9.1 cm long in old infructescences), branches sparsely glandulose-punctate and sparsely glandulose-villose, sparsely glandulose- punctate and sparsely glandulose-villose when old. Bracts 2–3.6 mm long, ovate, apex acute, margins ciliate, both surfaces glandulose-punctate and glandulose-villose; bracteoles 1–1.6 mm long, lanceolate, apex acute, both surfaces glandulose-punctate and glandulose-villose. Hypanthium 2.1–2.6 mm × 2.1–2.8 mm, short terete, glandulose-punctate and glandulose-villose. Sepals ovate, apex acute, margins fimbriate, ciliate, both surfaces glandulose-punctate and glandulose-villose. Petals 5.5–7 × 2.5–3 mm, pink, obovate, base cuneate, apex rounded, margins entire, eciliate, both surfaces papillose, otherwise glabrous. Stamens 3.2–4.7 mm long; filaments 1.4–2.3 mm long; anthers 1.9–2.4 mm long, cream colored, lanceolate, surface rugose or undulate, pore rounded, non-thickened margins, extrorse; connective prolonged (ca. 0.5 mm), dorsally bilobed. Style 3.4–5 mm long, slightly curved at the apex, glabrous. Fruits ca. 0.5 × 0.8 cm. Seeds reniform. Examined material: — BRAZIL. Bahia: Macarani, Carvalho 6995 (ALCB!, CEPEC!, HUEFS!, NY, UESC!, UPCB!). Additional material: — BRAZIL. Minas Gerais: Santa Maria do Salto, Amorim 5548 (CEPEC!, NY); Amorim 5845 (CEPEC!); Thomas 14624 (CEPEC!). Conservation Status: — There are only two known populations of the species, but most specimens were found in “Fazenda Duas Barras” (Minas Gerais), an area of primary forest inside the “Parque Nacional Alto Cariri”. Bertolonia kollmannii has an EOO of 82 km ² and AOO of 201 km ², and should be classified as “Critically Endangered” (CR), following IUCN (2017) categories. Notes: — Bertolonia kollmannii occurs in a restricted area along the border between the states of Bahia and Minas Gerais, in montane rainforests (Fig. 3h), in moist and shaded slopes near water. Collected with flowers in February and August, with fruits in February, April and August. The species can be recognized by the small, ovate and bullate leaf blades with an acute apex and crenate margins, flowers with fimbriate sepals, pink petals with the apex not apiculate and anthers dehiscing through an extrorse pore. Bertolonia kollmannii is similar to B. wurdackiana Baumgratz (1990: 125), endemic of the state of Espírito Santo. Bertolonia kollmannii differs by the usually smaller leaf blades (2.4–5.5 × 1.6–4.7 cm) with an acute apex and crenate margins (vs. usually bigger leaf blades (5.8–15 × 3–8 cm) with an obtuse or rounded apex and serrate margins in B. wurdackiana), by the pink, 5.5–7 mm long petals, with an obtuse apex (vs. white petals, 7.8–8.3 mm long, with an acute and dorsally apiculate apex) and cream-colored anthers dehiscing through an extrorse pore (vs. yellow anthers dehiscing through an introrse pore). For more details, see Bacci et al. (2018) and Table 1.Published as part of Bisewski, Gessica C. A., Bacci, Lucas F., Amorim, André M. & Goldenberg, Renato, 2022, The Genus Bertolonia (Melastomataceae) In The State Of Bahia, Brazil, pp. 153-183 in Phytotaxa 548 (2) on pages 169-170, DOI: 10.11646/phytotaxa.548.2.3, http://zenodo.org/record/659767
Two-Tier Latent Class IRT Models in R
No full textIn analyzing data deriving from the administration of a questionnaire to a group of individu als, Item Response Theory (IRT) models provide a flexible framework to account for several aspects involved in the response process, such as the existence of multiple latent traits. In this paper, we focus on a class of semi-parametric multidimensional IRT models, in which these traits are represented through one or more discrete latent variables; these models allow us to cluster individuals into homo geneous latent classes and, at the same time, to properly study item characteristics. In particular, we follow a within-item multidimensional formulation similar to that adopted in the two-tier models, with each item measuring one or two latent traits. The proposed class of models may be estimated through the package MLCIRTwithin, whose functioning is illustrated in this paper with examples based on data about quality-of-life measurement and about the propensity to commit a crime
Vortex Vein Imaging: What Can It Tell Us?
No full textAditya Verma,1,2 Tommaso Bacci,3,4 David Sarraf,5 K Bailey Freund,3,4 SriniVas R Sadda1,2 1Doheny Eye Institute, Los Angeles, CA, USA; 2Department of Ophthalmology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA; 3Vitreous Retina Macula Consultants of New York, New York, NY, USA; 4Department of Ophthalmology, New York University Grossman School of Medicine, New York, NY, USA; 5Stein Eye Institute, David Geffen School of Medicine at University of California, Los Angeles, CA, 90095, USACorrespondence: SriniVas R Sadda Email [email protected]: This review article summarizes the patho-anatomy of the vortex veins, the major drainage channels for the choroid, and describes the various pathways of diseases associated with vortex vein abnormalities. This report also details the technical advancements to image the vortex veins, such as ultra-widefield indocyanine green angiography, which are critical to elucidate the importance of the vortices in various retino-choroidal disorders. Future applications of these advanced imaging systems to better understand the role of the vortex veins in health and disease are also discussed.Keywords: choroid, optical coherence tomography angiography, pachychoroid disease, ultra-widefield imaging, vortex vein
Atlas Of Pediatric Ocular Oncology
No full textThis atlas-book was conceived in the dark evenings during the Covid pandemic to keep the
mind busy, not only mine but also the young residents of our clinic.
The images that enrich each chapter are part of a life of over 30 years dedicated to ocular
oncology, mainly of the pediatric age.
A passion and commitment transmitted by my mentor Prof. Frezzotti who treated the first
retinoblastoma in 1959.
So here, I find myself collecting the most significant images of hundreds of clinical cases
faced, diagnosed and treated over the years.
Retinoblastoma is obviously the largest part of this atlas due to the over 900 cases observed
and treated in Siena.
It took almost 3 years...because unfortunately the time left to write, study and publish is
the evening hours after long and tiring days of clinical care activities.
My long friendship, collaboration and growth together with Paolo Galluzzi has allowed us
to add to each chapter MRI notions useful in the differential diagnosis of various pathologies.
My friend Rana’a helped correct some chapters and give his contribution on ocular mela-
noma in pediatric age.
Good friends and colleagues have been added among the collaborators for sending unu-
sual and rare cases.
I thank Tero Kivela, Sonia De Francesco, Tommaso Bacci, Marco Mazza, Mattia Pasti,
Alfonso Cerase, Lucia Monti, Mario Fruschelli and Cristina Menicacci for their precious
contributions.
An affectionate thought goes to all the young residents who, with great enthusiasm, em-
braced the topics assigned to them and carried out the various chapters with curiosity and
interest.
The drawings were all done by the talented resident Dimitris Pollalis who gave a truly
artistic touch to this atlas.
This book is dedicated to all ophthalmologists, of all ages, who are passionate, curious and
fascinated by their work with the hope that the hundreds of images can help to recognize
unusual and complex cases
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe 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
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
Proposta di procedure standard per l'autopsia medico-legale
No full textNell anno 2003 la Società Italiana di Medicina Legale ha richiesto ad un gruppo di esperti in patologia forense, componenti del Gruppo Italiano di Patologia Forense, l indicazione di procedure standard di riferimento per lo svolgimento dell autopsia medico legale.
Ciò in armonia con le disposizioni Comunitarie che, attraverso la Raccomandazione del Consiglio d Europa n. R. 99, aveva inteso armonizzare le procedure autoptiche medico legali tra i paesi membri.
Il lavoro del gruppo di studio è stato intenso ed articolato ed ha condotto alla realizzazione di una proposta organica di linee guida per lo svolgimento dell esame autoptico medico legale in tutta la sua complessità e completezza comprensiva delle indagini pre necroscopiche e delle successive procedure laboratoristiche.
In questo lavoro vengono esposti nel dettaglio i risultati dello studio effettuato e le proposte procedurali indirizzate al costante controllo di qualità dell attività settoria medico legale
A New Step Towards Performance Based Specifications for Asphalt Pavements
No full textTechnical specifications of many Agencies are quickly moving from prescriptive to performance based, that requires field compliance tests of the constructed pavement, such as in situ pavement stiffness measurements by the Falling-Weight Deflectometer (FWD). This creates a number of issues for material suppliers, constructors, consultants, designers and end users who are now required to rely on data produced from such devices for design and compliance checks in the field. Whilst there is wide experience on the use of such devices, issues remain such as optimisation of test methodology, data interpretation and use, comparison between laboratory and in situ measured moduli.
The aim of this work is to define a data interpretation procedure and a framework for the analysis of results obtained by using such device to ensure high quality data and decision making, particularly for their role in performance based specifications. In a previous work, a particular testing and data interpretation procedure have been proposed in order to evaluate strains in pavement layers directly from FWD deflections and pavement layer thickness; here the values of elastic modulus back-calculated in the previous work are compared with those of resilient modulus MR evaluated by laboratory tests carried out on cores taken from pavement.
Stiffness Master Curves (SMC) have been developed by using the resilient modulus data determined at various test temperatures and loading frequencies, and they have been used for shifting data to the in-situ asphalt pavement conditions. The frequency spectrum of FWD load has been calculated in order to assume a representative loading frequency for this device. For this loading frequency, the back-calculated asphalt modulus has shown excellent correlation with the corresponding values of the SMC. This illustrates that reasonable estimates of the in situ asphalt modulus can be provided by using the Indirect Tensile Test for Cylindrical Specimens (IT-CY) protocol to determine resilient modulus on cores or specimens compacted in laboratory; values obtained by this test must be shifted to in situ test conditions in order to be related to in situ asphalt modulus values, and to be used with elastic theory in pavement design
- …
