408 research outputs found
Trophoniella radesiensis Chaibi & Antit & Bouhedi & Meca & Gillet & Azzouna & Martin 2019, n. sp.
No full textTrophoniella radesiensis n. sp. Chaibi and Gillet Figures 3–6 urn:lsid:zoobank.org:act: D7C85C70-87FF-4AF4-8599-A8462B3FB8B1 Material examined. Holotype: MNCN16.01 /18453, collected on 25 Nov 2015 in Radés Station, Gulf of Tunis (15°55′ N, 97°41′ W) by the first author. Paratypes: MNCN 16.01 /18454. 6 specimens, same data as for holotype; UCO T FLA 025.1specimen, same data as for holotype. Diagnosis. Body covered by sediments of different grain size (50–1000 µm of long axe) embedded on tunic, completely concealed except in posterior region. Tunic pale, dorsally smooth, ventrally rough, with large papillae, carrying sediment grains and particles. Body papillae arranged in two dorsal and four ventral rows. Branchial plate tongue-shaped. Unidentate anchylosed neurohooks from chaetiger 20. Description. Holotype with some chaetae broken, non-reproductive adult, unknown sex. 35 mm long, 4 mm wide, with 60 chaetigers; paratypes varying from 30–43 mm long and 1–4 mm wide for 43–74 chaetigers (Fig. 3 A– E). Anterior body sub-cylindrical in cross-section, tapering towards pygidium. Tunic transparent, dorsally smooth, ventrally rough with large papillae, carrying sediment grains and particles with long axes ranging from 50 to 1000 µm, totally embedded in tunic, completely concealing it dorsally and ventrally, absent in posterior region. Pale brown, slightly reddish anteriorly. Cephalic cage 12 mm long, with chaetae ca. 1.5 times longer than body width, formed by chaetigers 1–5; chaetiger 2 dorsolateral, chaetiger 3–4 lateral. Chaetal transition from cephalic cage to body chaetae gradual (Fig. 3A, 3 C–E). Body papillae similar in colour to body wall, mostly eroded, arising in two dorsal and four ventral longitudinal rows from first chaetiger to posterior end, better preserved anterior-most body region (Fig. 3A, 3 C–E). Parapodia well developed. Noto and neuropodia have four prechaetal papillae and five postchaetal papillae (Fig. 3C). Especially long papillae absent from anterior chaetigers. Gonopodial papillae not seen. Chaetiger 1 with about six notochaetae and eight neurochaetae; anterior dorsal margin with dorsal papillae, arising as a multifid cephalic veil (Fig. 4A). Chaetiger 5 widening posteriorly. Cephalic hood not exposed. Caruncle short and triangular (Fig. 4C, 4D). Branchiae cirriform, arising from tongue-shaped branchial plate, arranged in two lateral lobes (Fig. 4A, 4D), thin, long (0.5–3mm), whitish once preserved in ethanol, with ca. 60 filaments. Palp, long, corrugated, pale, as long as largest branchiae, 6 mm long (Fig. 4B, 4C). Prostomium lowcone, with two large and two small black eyes (Fig. 3D, 3E). Lateral lip expanded; dorsal and ventral lips not well developed (Fig. 3D, 3E). Notochaetae all multiarticulated capillaries; articles progressively longer towards falcate tips; medial ones in short longitudinal series, 4–7 per bundle; some yellowish some dark brown; unidentate tips (Fig. 5 A–5D). Multiarticulated capillary neurochaeta from chaetiger 2 to 5, then short unidentate neurohooks from chaetiger 6 to 19 (Fig. 6A) and anchylosed hooks from chaetiger 20 to body end (Fig. 6B), darker than preceding ones, arranged in transverse series of 4–6 units per bundle, similarly wide along their length, subdistally not or slightly expanded, with short rings continued up to a subdistal, non-annulated hyaline region, hooked, tapering to roughly pointed, unidentate tips (Fig. 5A, 6B). Pygidium simple, with single anal cirrus. No intra-specific variability in morphological characters was observed, except for lacking sediment gains in some specimens. Distribution. Known only from the type locality, Radés Station (Gulf of Tunisia, Mediterranean Sea). Collected from both soft and rocky bottoms, from 3–4 m to 10 m depth. Etymology. The species name radesiensis refers to the type locality, Radés Station.Published as part of Chaibi, Marwa, Antit, Mouna, Bouhedi, Marwa, Meca, Miguel A., Gillet, Patrick, Azzouna, Atf & Martin, Daniel, 2019, A new species of Flabelligeridae (Annelida), Trophoniella radesiensis n. sp., from Tunisia, pp. 551-561 in Zootaxa 4571 (4) on pages 554-556, DOI: 10.11646/zootaxa.4571.4.7, http://zenodo.org/record/261426
Manual therapies for cervicogenic headache: a systematic review
No full textThis paper systematically reviewed randomized clinical trials (RCT) assessing the efficacy of manual therapies for cervicogenic headache (CEH). A total of seven RCTs were identified, i.e. one study applied physiotherapy ± temporomadibular mobilization techniques and six studies applied cervical spinal manipulative therapy (SMT). The RCTs suggest that physiotherapy and SMT might be an effective treatment in the management of CEH, but the results are difficult to evaluate, since only one study included a control group that did not receive treatment. Furthermore, the RCTs mostly included participant with infrequent CEH. Future challenges regarding CEH are substantial both from a diagnostic and management point of view.
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Influência da odontologia restauradora sobre o periodonto (revisão de literatura)
No full textMonografia de especialização - Universidade Federal de Santa Catarina. Centro de Ciências da Saúde. Curso de Especialização em Periodontia
Controle do fungo Colletotrichum gloeosporioides em plantas de goiaba-serrana (Acca sellowiana) (in vitro e in vivo) com óleo essencial de Eucalypto viminalis
No full textProjeto acadêmico (graduação) - Universidade Federal de Santa Catarina. Campus Curitibanos. Ciências Rurais.Por ser susceptível a diversas doenças, tais como a antracnose, a goiaba-serrana é uma planta que tem dificuldade em ter uma produção em quantidade e qualidade. Com isto, este trabalho vem pesquisar um tratamento alternativo para combater o fungo Colletotrichum gloeosporioides, o causador da antracnose, utilizando o óleo essencial da espécie Eucalypto viminalis. O Eucalypto viminalis é uma planta que tem um potencial enorme para combater fungos, pois é formado por grande quantidade de compostos antibacterianos e antifúngicos. Assim, a aplicação do óleo de eucalipto será empregado para combater o fungo, os testes serão realizando in vitro para combater um eventual problema que possa surgir, e obter um potencial elevado do seu óleo. Quando os resultados do laboratório forem analisados, e constatado que tem potencial, será feita a avaliação in vivo nas plantas. E assim propiciar aos produtores um maior interesse para produzir goiaba-serrana, não havendo grande porcentagem de doença, e otimizando o preço da fruta no mercado
Advanced modulation format using silicon modulators in the O-band
No full textInternational audienceThis paper review our recent work on silicon modulators based on free carrier concentration, working in the O-band of optical communications (1260 nm-1360 nm) for short distance applications. 25 Gbit/s OOK modulation is obtained using a driving voltage of 3.3 Vpp , and QPSK dual-drive Mach-Zehnder modulator (DDMZM) operating in the O-band is demonstrated for the first time
The electron affinities of O, Si, and S revisited with the photodetachment microscope
No full textPhotodetachment microscopy has been performed on a beam of ions. Analysing the electron images obtained, we find that the electron affinity measurements performed with the photodetachment microscope contain a small bias, due to the difference between the actual and assumed values of the applied electric field. Having a measure of this bias, we can reanalyse older data recorded on the negative ions O- and Si- along similar lines. As a consequence, the values of the electron affinities of Oxygen, Silicon and Sulfur can be given with an improved accuracy. The recommended values (with expanded uncertainties) are now for 16O, for 28Si, and for 32S, i.e. 1.461 113 5(12), 1.389 521 3(13) and 2.077 104 0(9) eV, respectively
Semi-automated stereoradiographic upper limb 3D reconstructions using a combined parametric and statistical model: a preliminary study
No full textPURPOSE: Quantitative assessment of 3D clinical indices may be crucial for elbow surgery planning. 3D parametric modeling from bi-planar radiographs was successfully proposed for spine and lower limb clinical investigation as an alternative for CT-scan. The aim of this study was to adapt this method to the upper limb with a preliminary validation. METHODS: CT-scan 3D models of humerus, radius and ulna were obtained from 20 cadaveric upper limbs and yielded parametric models made of geometric primitives. Primitives were defined by descriptor parameters (diameters, angles...) and correlations between these descriptors were found. Using these correlations, a semi-automated reconstruction method of humerus using bi-planar radiographs was achieved: a 3D personalized parametric model was built, from which clinical parameters were computed [orientation and projections on bone surface of trochlea sulcus to capitulum (CTS) axis, trochlea sulcus anterior offset and width of distal humeral epiphysis]. This method was evaluated by accuracy compared to CT-scan and reproducibility. RESULTS: Points-to-surface mean distance was 0.9 mm (2 RMS = 2.5 mm). For clinical parameters, mean differences were 0.4-1.9 mm and from 1.7° to 2.3°. All parameters except from angle formed by CTS axis and bi-epicondylar axis in transverse plane were reproducible. Reconstruction time was about 5 min. CONCLUSIONS: The presented method provides access to morphological upper limb parameters with very low level of radiation. Preliminary in vitro validation for humerus showed that it is fast and accurate enough to be used in clinical daily practice as an alternative to CT-scan for total elbow arthroplasty pre operative evaluation
A fast algorithm for ranking and perimeter computation on a reconfigurable mesh computer
No full textParametric analysis and new performance correlation of an innovative system for green hydrogen, oxygen, heat, and electricity production: Application in Pau
No full textInternational audienceMulti-generation systems powered by renewable energy sources are positioned as promising solutions to reduce the carbon footprint. This work proposes and analyses an innovative system capable of simultaneously gener- ating green hydrogen, electrical energy, and thermal energy. The system combines a proton exchange membrane (PEM) electrolyser with photovoltaic thermal (PVT) collectors using heat pipes (PVT/HP). A statistical model was developed to estimate the electrical and thermal energy outputs of the PVT collectors, and the generation rates of green hydrogen and oxygen produced by the PEM electrolyser. The study examines the impact of solar radiation intensity, ambient temperature, mass flow rate, and the number of heat pipes on the system’s per- formance. A Multiphysics approach was implemented, combining the modelling of radiative, conductive, and convective heat transfers within the PVT collectors with the PEM electrolyser model, while applying the response surface methodology (RSM). The model demonstrates remarkable accuracy, with coefficients of determination of 0.9792, 1, 1, and 1 for thermal energy, electrical power, and hydrogen and oxygen production rates, respectively. The results indicate that under a temperate oceanic climate (Pau, France), the system achieves a maximum electrical power of 3623 W in July, while January records the lowest thermal energy production, at 1125 W. Hydrogen and oxygen production rates also peak in July, reaching 0.9984 g/min and 7.924 g/min, respectively, compared to 0.422 g/min and 3.343 g/min in January. This work highlights the potential of integrated renewable energy systems for sustainable energy production and provides valuable insights for optimizing performance in similar climatic regions
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