169,799 research outputs found
Liver and limb lipid content and composition in roe deer males during the pre and post rutting seasons.
No full text
Fallow deer milk composition: effect of diet
No full textTwo groups of 6+6 female lactating fallow deer were fed either on pasture alone (PASC) or on pasture plus supplementary feeding (500-700g/head/d; CONC). CONC improved dams’ body condition and suckling fawns’ growth rate. Supplemented deer’s milk was lower in fat and in dry matter, and higher in lactose: it may be argued that CONC milk production was higher. Milk fat, protein and dry matter increased, while lactose decreased in both groups from the 46th to 134th lactation day. Two analytical methods (infra-red spectroscopy and proximate analysis on freeze-dried milk) and two calibration systems within infra-red spectroscopy (buffalo milk and ewe milk) gave similar results for milk fat and protein
Effects of elastic recoil on maximal explosive power of the lower limbs
No full texthe maximal explosive power during a two legs jump was measured on four competitive athletes [mean age 24(SD 4.3) years; height 1.79 (SD 0.09) m; body mass 68.7 (SD 12.8) kg] at different starting knee angles (70, 90, 110, 130 and 150 degrees). The experiments were performed on a newly developed instrument with which both force and speed could be measured using a force platform and a wire tachometer, respectively, and on a conventional force platform. At the smallest knee angle (70 degrees) the mean power output (W in watts per kilogram) developed during the jump was found not to differ significantly between the two methods (P > 0.1). At the larger knee angles W was 18.4% (90 degrees), 34.5% (110 degrees), 47.4% (130 degrees) and 19.4% (150 degrees) higher using the conventional force platform (P < 0.05 throughout). The difference of W between the two methods was attributed to the recovery of elastic energy due to the counter movement which immediately preceded the jump on the conventional platform, but not on the newly developed instrument. Indeed because of a mechanical arrangement which prevented the subject from moving towards the platforms, eccentric work (W-) could not be performed on the newly developed instrument; whereas W- on the conventional force platform was almost negligible at 70 degrees knee angle [mean 1.7 (SD 2.3 J)] reached a maximum of 13.1 (SD 7.9) J at 130 degrees and decreased again to a mean 4.7 (SD 3.6) J for the largest angle (150 degrees). Furthermore, on the conventional force platform, the force at the onset of the positive speed phase (Fi) was an increasing function of W- (r2 = 0.519, P < 0.001); and the difference of W between the conventional and new instruments was larger the larger the difference of Fi (r2 = 0.391, P < 0.01)
Energetics of Shuttle Runs: The Effects of Distance and Change of Direction
No full textShuttle runs can be used to study the physiological responses in sports (such as basketball) characterized by sprints (accelerations/ decelerations) and changes of direction. Purpose: To determine the energy cost (C) of shuttle runs with different turning angles and over different distances (with different acceleration/deceleration patterns). Methods: Nine basketball players were asked to complete 6 intermittent tests over different distances (5, 10, 25 m) and with different changes of direction (180° at 5 and 25 m; 0° , 45° , 90° , and 180° at 10 m) at maximal speed (v ≈ 4.5 m/s), each composed by 10 shuttle runs of 10-s duration and 30-s recovery; during these runs oxygen uptake (VO2), blood lactate (Lab), and C were determined. Results: For a given shuttle distance (10 m) no major differences where observed in VO2 (∼33 mL · min-1 · kg-1), Lab (∼3.75 mM), and C (∼21.2 J · m-1 · kg-1) when the shuttle runs were performed with different turning angles. For a given turning angle (180° ), VO2 and Lab were found to increase with the distance covered (VO2 from 26 to 35 mL · min-1 · kg-1; Lab from 0.7 to 7.6 mM) while C was found to decrease with it (from 29.9 to 10.6 J · m-1 · kg-1); the relationship between C and d (m) is well described by C = 92.99 × d0.656, R2 = .971. Conclusions: The metabolic demands of shuttle tests run at maximal speeds can be estimated based on the running distance, while the turning angle plays a minor role in determining C
Energetics of shuttle runs: the effects of distance and change of direction.
No full textShuttle runs can be used to study the physiological responses in sports (such as basketball) characterized by sprints (accelerations/decelerations) and changes of direction.
Purpose: To determine the energy cost (C) of shuttle runs with different turning angles and over different distances (with different acceleration/deceleration patterns).
Methods: Nine basketball players were asked to complete 6 intermittent tests over different distances (5, 10, 25 m) and with different changes of direction (180° at 5 and 25 m; 0°, 45°, 90°, and 180° at 10 m) at maximal speed (v ≈ 4.5 m/s), each composed by 10 shuttle runs of 10-s duration and 30-s recovery; during these runs oxygen uptake (VO2), blood lactate (Lab), and C were determined.
Results: For a given shuttle distance (10 m) no major differences where observed in VO2 (~33 mL · min–1 · kg–1), Lab (~3.75 mM), and C (~21.2 J · m–1 · kg–1) when the shuttle runs were performed with different turning angles. For a given turning angle (180°), VO2 and Lab were found to increase with the distance covered (VO2 from 26 to 35 mL · min–1 · kg–1; Lab from 0.7 to 7.6 mM) while C was found to decrease with it (from 29.9 to 10.6 J · m–1 · kg–1); the relationship between C and d (m) is well described by C = 92.99 × d0.656, R2 = .971. Conclusions: The metabolic demands of shuttle tests run at maximal speeds can be estimated based on the running distance, while the turning angle plays a minor role in determining C
Le aule. I luoghi della conoscenza
No full textLa storia di Sapienza è costellata di eccellenze che rappresentano gran parte della storia del pensiero scientifico in Italia. Le discipline che hanno sviluppato una vera e propria “scuola” presso Sapienza coprono tutto l’arco dei saperi, dalle scienze esatte alle discipline tecniche, alle materie umanistiche, storiche, filosofiche ed economicogiuridiche, dalla sociologia alla psicologia, dalla scienza delle comunicazioni alla medicina.
Gli scavi archeologici hanno prodotto risultati di rilievo mondiale, come le scoperte in Libia, Siria e Turchia, le ricerche sul mondo latino ed etrusco. La tradizione umanistica, nelle sue molteplici manifestazioni, ha trovato
alla Sapienza i maggiori maestri del Novecento. Nella campo della fisica l’eredità dei componenti del gruppo di via Panisperna - tra i quali Enrico Fermi, Edoardo Amaldi, Emilio Segrè - è stata raccolta ed estesa alla fisica quantistica, alla fisica dei sistemi disordinati e all’astrofisica. Beni culturali, energia, ambiente, nanotecnologie, design, aerospazio, nautica sono solo alcuni degli ambiti scientifici che costituiscono riconosciuti apici di eccellenza; in campo biomedico tra le numerosissime eccellenze si distingue la terapia cellulare, con applicazioni importanti nella terapia genica della distrofia di Duchenne. Sapienza svolge oggi un ruolo di primaria importanza nel panorama didattico e di ricerca italiano ed europeo. L’Università ha al suo attivo 112 brevetti, oltre 50 sono in attesa di approvazione; il rapporto tra ricerca e applicazioni industriali è curato da una specifica struttura, il Consorzio Sapienza Innovazione. Tra i numerosi servizi a disposizione vi sono 155 biblioteche, una rete di 21 musei, gli sportelli di informazione e orientamento Ciao e Sort, lo sportello per i diritti delle
persone disabili. Il libro descrive la vita universitaria e le principali aree di studio e di ricerca attraverso una panoramica sui suoi edifici e sulle sue aule principali.With 700 years of history and 145,000 students, Sapienza is the top university community in Europe in terms of student numbers. It is organised into five federated universities, 21 faculties and more than 100 departments, with
over 4,500 teachers and about 5,000 technicians and administrative workers. The first university in Rome has more than 600 lecture rooms, with a total of nearly 60,000 seats. Building development programmes have recently
enabled the creation of 2000 new seats, in restored or new premises, with high standards of technology. These structures are used for teaching activities with a wide range of training available, including about 350 degree courses and over 300 masters’ courses. This brochure describes the lecture rooms at Sapienza using photographs of a selection of venues. The book does not aim to be exhaustive, but rather to highlight the vast material and
cultural heritage of the lecture rooms of Sapienza
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
Mitomycin C in highly myopic eyes - Author reply
No full textOphthalmology. 2005 Feb;112(2):208-18; discussion 219.
Mitomycin C modulation of corneal wound healing after photorefractive keratectomy in highly myopic eyes.
Gambato C, Ghirlando A, Moretto E, Busato F, Midena E.
SourceRefractive Surgery Service and Antimetabolite Therapy Research Unit, Department of Ophthalmology, University of Padova, Padova, Italy.
Abstract
PURPOSE: To evaluate the role of topical mitomycin C in corneal wound healing (CWH) after photorefractive keratectomy (PRK) in highly myopic eyes.
DESIGN: Prospective, double-masked, randomized clinical trial.
PARTICIPANTS: Seventy-two eyes of 36 patients affected by high (>7 diopters) myopia.
METHODS: In each patient, one eye was randomly assigned to PRK with intraoperative topical 0.02% mitomycin C application, and the fellow eye was treated with a placebo. Postoperatively, mitomycin C-treated eyes received artificial tears (3 times daily, tapered in 3 months), whereas the fellow eye was treated with fluorometholone sodium 2% and artificial tears (3 times daily, tapered in 3 months).
MAIN OUTCOME MEASURES: Uncorrected visual acuity (UCVA) and best-corrected visual acuity (BCVA), contrast sensitivity, manifest refraction, and biomicroscopy. Contrast sensitivity was determined using the Pelli-Robson chart. Corneal confocal microscopy documented CWH.
RESULTS: Mean follow-up was 18 months (range, 12-36). No side effects or toxic effects were documented. At 12-month follow-up examination, UCVAs (logarithm of the minimum angle of resolution) were 0.4+/-0.48 and 0.5+/-0.53 (P = .03) in mitomycin C-treated eyes and corticosteroid-treated eyes, respectively. At 1 year, corneal haze developed in 20% of corticosteroid-treated eyes, versus 0% of mitomycin C-treated eyes. At 12, 24, and 36 months, corneal confocal microscopy showed activated keratocytes and extracellular matrix significantly more evident in untreated eyes (Ps = 0.004, 0.024, and 0.046, respectively).
CONCLUSION: Topical intraoperative application of 0.02% mitomycin C can reduce haze formation in highly myopic eyes undergoing PRK.
Comment in
Ophthalmology. 2006 Feb;113(2):357; author reply 357-8
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