2,066 research outputs found
Portrait of Senator Scott W. Lucas.
No full textHandwritten inscription: \u27To my good friend Felton M. \u27Skeeter\u27 Johnston with best wishes and high regards. From W. Lucas Senator from Illinois\u27https://egrove.olemiss.edu/fmjohnston/1104/thumbnail.jp
Gas volume fraction and velocity profiles: vertical and inclined bubbly air-water flows
No full textUpward inclined gas-liquid flows are frequently encountered in the oil industry and data relating to the local gas volume fraction distribution and the local gas velocity distribution is important, for example, in pressure gradient prediction and in modeling oil well 'blowouts'. In this paper measurements are presented of the local gas volume fraction distribution and the local axial gas velocity distribution which were taken in bubbly air-water flows in an 80 mm diameter pipe which was inclined at angles of 0°, 15° and 30° to the vertical. Qualitative arguments are presented to explain the influence of the liquid superficial velocity on the local gas volume fraction distribution in inclined flow and also to explain the very high axial gas velocities observed towards the upper side of the inclined pipe
Grapsus maurus Lucas 1846
No full textGrapsus maurus Lucas, 1846 (Fig. 4C) Grapsus maurus Lucas, 1846 (1846 -1849): 20, pl. 2, fig. 5 (see Evenhuis 2012: 38). Leptograpsus maurus – H. Milne Edwards 1853: 173 (Algeria). CURRENT TAXONOMIC STATUS. — Pachygrapsus maurus (Lucas, 1846), accepted recombination (see Heller 1863: 112). LECTOTYPE (by present designation). — MNHN-IU-2000-3523 (= MNHN-B3523), ♂ 17.0 × 19.5 mm, Oran, northwestern coast of Algeria, M. Deshayes, M. Lucas. — Original label: “ Leptograpsus maurus Edw., Oran, M. Lucas ”. PRESERVATION. — Dry. Specimen attached onto cardboard by a stub; RP5 missing. REMARKS The species described by Lucas (1846: 20) was based on two male specimens, one measuring 17.0 × 19.5 mm, collected by Deshayes at Oran, located on the northwestern coast of Algeria. Lucas (1846) noted: “This species, of which I have only two male individuals, was found during the summer, in Oran harbour, by M. Deshayes” (“ Cette espèce, dont je ne possède que deux individus mâles, a été rencontrée pendant l’été, dans la rade d’Oran, par M. Deshayes ”). Rathbun (1918: 244) indicated that the ‘type’ was in the “ Paris Museum”, but Poupin et al. (2005: 28) noted that “the first author was unable to locate it” in the MNHN. A sample MNHN-IU-2000-3523 (= MNHN-B3523), with only one male specimen labelled “ Oran, M. Lucas”, thus from the type locality and obviously collected and identified by Lucas, fully corresponds to the male specimen described and measured by Lucas (1846). It is hereby designated as lectotype. The second specimen of the type series is missing.Published as part of Ng, Ngan Kee, Rodríguez Moreno, Paula A., Naruse, Tohru, Guinot, Danièle & Mollaret, Noémy, 2019, Annotated type-catalogue of Brachyura (Crustacea, Decapoda) of the Muséum national d'Histoire naturelle, Paris. Part II. Gecarcinidae and Grapsidae (Thoracotremata, Grapsoidea), with an Appendix of pre- 1900 collectors, pp. 91-130 in Zoosystema 41 (7) on page 106, DOI: 10.5252/zoosystema2019v41a7, http://zenodo.org/record/372252
Supplemental_Material – Supplemental material for Bowel Outcome Prediction After Traumatic Spinal Cord Injury: Longitudinal Cohort Study
No full textSupplemental material, Supplemental_Material for Bowel Outcome Prediction After Traumatic Spinal Cord Injury: Longitudinal Cohort Study by Chiara Pavese, Lucas M. Bachmann, Martin Schubert, Armin Curt, Ulrich Mehnert, Marc P. Schneider, Giorgio Scivoletto, Enrico Finazzi Agrò, Doris Maier, Rainer Abel, Norbert Weidner, Rüdiger Rupp, Alfons G. Kessels and Thomas M. Kessler in Neurorehabilitation and Neural Repair</p
La citation et l'appel à référence bibliographique dans les articles académiques
No full text@incollection{ol-Lucas-2004-1, author = {Lucas, Nadine}, title = {La citation et l'appel à référence bibliographique dans les articles académiques}, booktitle = {Le discours rapporté dans tous ses états : Question de frontières}, pages = {419-427}, publisher = {l'Harmattan}, year = {2004}, editor = {López-Muñoz, J. M. and Marnette, S. and Rosier, L.}
Prediction of first coronary events with the Framingham score: a systematic review
No full textBACKGROUND: Uncertainty exists about the performance of the Framingham risk score when applied in different populations. OBJECTIVE: We assessed calibration of the Framingham risk score (ie, relationship between predicted and observed coronary event rates) in US and non-US populations free of cardiovascular disease. METHODS: We reviewed studies that evaluated the performance of the Framingham risk score to predict first coronary events in a validation cohort, as identified by Medline, EMBASE, BIOSIS, and Cochrane library searches (through August 2005). Two reviewers independently assessed 1496 studies for eligibility, extracted data, and performed quality assessment using predefined forms. RESULTS: We included 25 validation cohorts of different population groups (n = 128,000) in our main analysis. Calibration varied over a wide range from under- to overprediction of absolute risk by factors of 0.57 to 2.7. Risk prediction for 7 cohorts (n = 18658) from the United States, Australia, and New Zealand was well calibrated (corresponding figures: 0.87-1.08; for the 5 biggest cohorts). The estimated population risks for first coronary events were strongly associated (goodness of fit: R2 = 0.84) and in good agreement with observed risks (coefficient for predicted risk: beta = 0.84; 95% CI 0.41-1.26). In 18 European cohorts (n = 109499), the corresponding figures indicated close association (R2 = 0.72) but substantial overprediction (beta = 0.58, 95% CI 0.39-0.77). The risk score was well calibrated on the intercept for both population clusters. CONCLUSION: The Framingham score is well calibrated to predict first coronary events in populations from the United States, Australia, and New Zealand. Overestimation of absolute risk in European cohorts requires recalibration procedures
SOME NEW FINITE SUMS INVOLVING GENERALIZED FIBONACCI AND LUCAS NUMBERS
No full textIn this paper, we compute various finite sums that alternate according to (-1)((kn)) involving the generalized Fibonacci and Lucas numbers for k = 3, 4, 5 and even k of the form 2(m) with m > 1.Scientific Research Projects Office (BAP) of Selcuk UniversitySelcuk UniversityThe author would like to thank Prof. Emrah Kilic for suggesting the problem. This work is supported by the Scientific Research Projects Office (BAP) of Selcuk University
Assessing late-time singular behaviour in symmetry-plane models of 3D Euler flow
No full textMotivated by work on stagnation-point type exact solutions of the 3D Euler fluid equations by Gibbon [Gibbon et. al. Phys. D, 132, 497, (1999)] and the subsequent demonstration of finite-time blowup by Constantin [Constantin, Math. Res. Notices, 9, 455, (2000)] we introduce a one-parameter family of models of the 3D Euler equations on a 2D symmetry plane. These models provide a collection of blow-up scenarios which admit analytical solutions and are computationally inexpensive in comparison to the full 3D Euler equations. We take advantage of these features to examine the efficacy of novel methods which aid the assessment of finite-time blow-up in numerical simulations. The principal of these is the mapping to regular systems [Bustamante, Phys. D, 240, 1092, (2011)]; a bijective nonlinear mapping of time and the prognostic variables based on a Beale-Kato-Majda (BKM) type supremum norm regularity condition [Beale et. al. Commun. Math. Phys. 94, 61, (1984)]. We show a 3 order of magnitude increase of accuracy of the singularity time when employing the mapping with negligible additional computational expense. An investigation of the spectra of the primary field (vortex stretching rate) allows us to confirm a power law decrement of the analyticity-strip width with time in agreement with rigorous bounds bridging between the global spatial behaviour and BKM theorems [Bustamante & Brachet, Phys. Rev. E. 86, (2012)]
Effectiveness of the LUCAS device for mechanical chest compression after cardiac arrest : systematic review of experimental, observational and animal studies
No full textContext: The LUCAS mechanical chest compression device may be better than manual chest compression during resuscitation attempts after cardiac arrest. Objective: To summarise the evidence about the effectiveness of LUCAS. Data sources: Searches of 4 electronic databases, reference lists of included studies, review articles, clinical guidelines, and the manufacturer's web site. No language restrictions were applied. Date of last search: September 2011. Study selection: All studies, of any design, comparing mechanical chest compression using LUCAS with manual chest compression, with human or animal subjects. Studies published only as abstracts were included. Manikin studies, and case reports or case series, were excluded. Data extraction: Data were extracted on study methodology and outcomes, including return of spontaneous circulation, survival, injuries caused by resuscitation, and physiological parameters. Results: 22 papers reporting 16 separate studies were included. There was one randomised trial, nine cohort studies, 2 before/after studies and 4 animal studies. No meta-analyses were performed because of high risk of bias and heterogeneity in the study designs. Animal studies suggested an advantage to LUCAS in terms of physiological parameters, but human studies did not suggest an advantage in ROSC or survival. Existing evidence is low quality because most studies were small and many were poorly reported. Conclusions: There is insufficient evidence to make any recommendations for clinical practice. Large scale, high quality randomised trials of LUCAS are needed. Studies that have so far been published only as abstracts should be reported fully. Copyright Article author (or their employer) 2012
Prediction of bladder outcomes after ischemic spinal cord injury: A longitudinal cohort study from the European multicenter study about spinal cord injury
No full textOBJECTIVE
The recovery of bladder function after spinal cord injury (SCI) is of major importance for patients and caregivers. We recently developed prediction models of bladder outcomes (defined as the capacity of storing the urine and emptying completely the bladder) 1 year after a SCI of traumatic etiology and investigated if these models would also be applicable to patients with ischemic SCI.
PATIENTS AND METHODS
From the European multicenter study about spinal cord injury (EMSCI), we extracted data of all ischemic SCI patients with available neurological and functional data (according to the International Standards for Neurological Classification of Spinal Cord Injury, ISNCSCI, and Spinal Cord Independence Measure, SCIM) within 40 days and bladder outcomes 1 year after ischemia. The model relies on three predictors: strength of the legs, the presence of sensation in the S3 dermatome, and the part of the SCIM assessing breathing and bladder and bowel control. A simplified model relying on leg strength only was also tested. Bladder outcomes were evaluated according to the score of item six of SCIM.
RESULTS
In total 85 patients (56 males (66%), mean age 55 years) were included. Twenty-three patients (27%) showed complete bladder function recovery one year after ischemia. Both models showed a very good predictive power: the area under the receiver operating characteristics curve (aROC) of the two models was 0.825 and 0.822, respectively.
CONCLUSIONS
Comparable to acute traumatic SCI, also in ischemic SCI the outcome of full bladder function recovery can be predicted by clinical scores, and prediction models of bladder outcomes may be applicable in clinical trials
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