196,773 research outputs found
Defensive peripersonal space: the blink reflex evoked by hand stimulation is increased when the hand is near the face
No full textSambo CF, Liang M, Cruccu G, Iannetti GD. Defensive peripersonal space: the blink reflex evoked by hand stimulation is increased when the hand is near the face. J Neurophysiol 107: 880-889, 2012. First published November 16, 2011; doi:10.1152/jn.00731.2011.-Electrical stimulation of the median nerve at the wrist may elicit a blink reflex [hand blink reflex (HBR)] mediated by a neural circuit at brain stem level. As, in a Sherringtonian sense, the blink reflex is a defensive response, in a series of experiments we tested, in healthy volunteers, whether and how the HBR is modulated by the proximity of the stimulated hand to the face. Electromyographic activity was recorded from the orbicularis oculi, bilaterally. We observed that the HBR is enhanced when the stimulated hand is inside the peripersonal space of the face, compared with when it is outside, irrespective of whether the proximity of the hand to the face is manipulated by changing the position of the arm (experiment 1) or by rotating the head while keeping the arm position constant (experiment 3). Experiment 2 showed that such HBR enhancement has similar magnitude when the participants have their eyes closed. Experiments 4 and 5 showed, respectively, that the blink reflex elicited by the electrical stimulation of the supraorbital nerve, as well as the N20 wave of the somatosensory evoked potentials elicited by the median nerve stimulation, are entirely unaffected by hand position. Taken together, our results provide compelling evidence that the brain stem circuits mediating the HBR in humans undergo tonic and selective top-down modulation from higher order cortical areas responsible for encoding the location of somatosensory stimuli in external space coordinates. These findings support the existence of a "defensive" peripersonal space, representing a safety margin advantageous for survival
Sambo wrestlers specific personality traits analysis before the competition
No full textThe paper deals with wrestlers of sambo specific personality traits: competitive emotional
stability, mental self-regulation differences between genders, sports, achieved results, training record
and age aspects. The survey involved 96 respondents - 2012 m. Lithuanian sambo championship
participants. Of these: 30 men athletes - sports sambo representatives, 36 women - sports sambo
athletes participating in competitions and 30 men - Combat Sambo participants. In the course of the
study it was found: men involved in sport sambo are able to concentrate better , plan their actions
better , are more resistant to external disturbances before and during the competition, women that
belong or belonged to the national team of the Republic of Lithuania are more likely to give in to
emotions before and during the competition than those women who were not in the national team,
athletes that belong or belonged in the national team are able to concentrate better, plan their actions
better, are more resistant to external disturbances, sports sambo involved men who exercise less than
11 years concentrates worse, plan their actions worse and harder breaks away from outside distractions
before and during the competition.Straipsnyje nagrinėjama savigynos imtynininkų specifinių asmenybės savybių: varžybinio emocinio pastovumo, psichinės savireguliacijos skirtumai lyties, sporto šakos, pasiektų rezultatų, treniruočių stažo bei amžiaus aspektais. Apklausoje dalyvavo 96 respondentai – 2012 m. Lietuvos sambo čempionato dalyviai. Iš jų: 30 sportininkų vyrai – sportinio sambo atstovai, 36 moterys – sportinio sambo varžybų dalyvės ir 30 sportininkų vyrai – kovinio sambo dalyviai. Tyrimo eigoje buvo nustatyta: sportiniu sambo užsiimantys vyrai geba geriau susikaupti, planuoti savo veiksmus, yra atsparesni išorės trukdžiams prieš ir varžybų metu, Lietuvos Respublikos rinktinėje esančios ar buvusios moterys labiau pasiduoda emocijoms prieš ir varžybų metu nei rinktinėje nebuvusios sportininkės, priklausantys ar priklausę rinktinei sportininkai geba geriau susikaupti, planuoti savo veiksmus, yra atsparesni išoriniams trukdžiams, sportiniu sambo užsiimantys vyrai, kurie sportuoja mažiau nei 11 metų prasčiau susikaupia, planuoja savo veiksmus ir sunkiau atitrūksta nuo išorės trukdžių prieš ir varžybų metu
Correction: Cyclophosphamide pulse regimen in the treatment of alveolitis in systemic sclerosis (Journal of Rheumatology (2002) 29 (731-736))
No full textCyclophosphamide pulse regimen in the treatment of alveolitis in systemic sclerosis. J Rheumatol 2002;29:731-6. The correct name of the co-author M. Proietti is Michele Proietti
Strategie per lo sviluppo di piante ornamentali NaCl – tolleranti attraverso la selezione in vitro
No full textPrinciples of Rapid Weight Loss in Female Sambo Athletes
No full textIn combat sports, competitors are separated into weight divisions, to create equality between the athletes. Consequently, rapid weight loss (RWL) is a common practice in combat sports. Although the methods used to induce RWL are similar among athletes, currently, there are limited data concerning the RWL methodologies used by sambo athletes. Therefore, this study aimed at determining RWL procedures among female sambo athletes. Participants in the study were top-level athletes competing at the World Sambo Championship held in Novi Sad. A total sample of 47 female sambo athletes, of whom 24 were seniors (27.3 ± 4 year/age, 1.61 ± 0.09 m/height, 61.8 ± 8.87 kg/weight) and 23 juniors (18.7 ± 0.8 year/age, 1.66 ± 0.07 m/height, 63.7 ± 12.1 kg/weight), were examined in the study. To determine RWL methods, data were collected through a standardized questionnaire. As a result, 88.7% of the female sambo athletes declared that they intentionally cut their weight before the competition. The most commonly used methods were gradual dieting, followed by sauna, fluid restriction, and skipping meals. The most considerable influence on the RWL strategies of athletes came from coaches and personal trainers, while physicians and dietitians were far less influential. The results obtained from this representative sample highlight the most common practices concerning weight cutting prior to competition among females. Therefore, there is a need to inform and educate both athletes and coaches about the potentially harmful effects of RWL in combat sports
The pH, electrical conductivity, and primary macronutrient concentration of diary biofiber-containing root substrates over time in a greenhouse environment
No full textRoot substrates were formulated to contain 0, 30, 40, 50, 60, 70, or 80% dairy biofiber (DBF) and 20% perlite, bark or parboiled rice hulls (PBH) with the remainder being sphagnum peat (peat). The pH, EC and primary macroelement (N, P, K) concentrations were determined for the different substrates at 0, 4 and 8 weeks in a greenhouse environment. For all substrates, the pH and EC increased as the amount of DBF increased. The maximum pH and EC levels were 7.9 and 1.8 dS��m-1, respectively. The initial ammonium (NH 4 +) concentrations for the substrates amended with perlite, bark and PBH were 10.0, 10.2 and 6.0 mg.L-1, respectively. Over time, the NH4 + concentrations decreased in all substrates. For perlite and bark-containing substrates, nitrate (NO 3 -) concentrations increased as the concentration of DBF increased to 40% after which the NO3 - concentrations decreased. Over time, NO3 - concentrations increased for all DBF-containing substrates. The maximum NO3 - concentrations were 38, 35 and 24 mg.L-1 for perlite, bark and PBH-containing substrates, respectively. The phosphorus (P) and potassium (K) concentrations for the DBF-containing root substrates increased as the concentration of DBF increased. The maximum P concentrations occurred for the 80% DBF substrates and were 10, 14 and 9 mg.L-1 for perlite, bark and PBH-containing substrates, respectively. The maximum K concentrations occurred for the 80% DBF substrates and were 225, 200 and 190 mg.L-1 for perlite, bark and PBH-containing substrates, respectively. The EC and primary macronutrient concentrations were within commonly recommended ranges for most greenhouse crops. Because of the high pH of the DBF, the DBF would need to be mixed with unamended sphagnum peat at not more than 30% of the total substrate volume or amended with a compound such as iron sulfate or elemental sulfur to produce a substrate with an acceptable pH
Venus
No full textPresentato all’Esposizione Nazionale di Pittura Italiana Contemporanea dell’Università di Trieste, il dipinto venne acquistato per la cifra di centomila lire nonostante gli elenchi dattiloscritti stilati nei giorni precedenti l’apertura della mostra ne segnalassero un valore di quattro volte superiore. Tale disparità di cifre non sfuggì al Rettore Ambrosino che, nel marzo del 1954, si affrettò a inviare una lettera a Sambo per pregarlo di «accettare il sacrificio che le chiedo considerando che la Sua opera sarà conservata da un’istituzione universitaria che ha vita secolare» (Lettera di Rodolfo Ambrosino a Edgardo Sambo, 11 marzo 1954). Nonostante l’esito del concorso indetto a margine dell’esposizione fosse andato a favore di opere stilisticamente molto diverse, Venus non era certo passata inosservata, vuoi per il fatto di uscire dal pennello di uno dei maggiori pittori triestini del secolo, vuoi per il fascino esercitato dal suo essere «pensosa e suggestiva» (Tranquilli, 6 dicembre 1953). Il dipinto può essere considerato il punto di arrivo della pittura di Sambo e, a un tempo, la perfetta summa dei suoi interessi: da un lato il culto della figura, nutrito sin dagli anni della formazione presso Zangrando e proseguito nella fitta schiera di ritratti che hanno costellato la sua produzione, dall’altro l’interesse per il mondo antico, inaugurato nel periodo romano del pensionato Rittmeyer e rafforzatosi negli anni Venti come conseguenza del contatto con Novecento e il gruppo di Valori Plastici. Le immagini di un tempo remoto e ormai in decadenza vengono utilizzate dall’artista triestino per puntellare ulteriormente l’idea di una pittura che è riflessione sui valori del presente, in crisi al pari dei monumenti (e degli ideali) su cui poggiava la grandezza del passato. Venus propone dunque un serrato e immediato confronto fra epoche lontane e principi estetici diversi: nonostante la figura in primo piano e la Venere di Milo sullo sfondo condividano le medesime rotondità e pudori, la femminilità provocante incarnata dalla giovane non è più quella di una divinità distaccata dai rumori del mondo ma piuttosto quella di una soda lavoratrice pronta ad affrontare la vita con tutte le problematiche della contemporaneità. Se dal punto di vista tematico il dipinto presenta evidenti affinità con I tre modelli, risalente al 1929 (Cataldi, 1999, cat. n. 89, p. 75), il motivo del ripiegamento interiore e il desiderio di rappresentare la condizione sociale del secondo dopoguerra che qui si possono percepire si riverberano in opere cronologicamente più prossime come Giovane operaio (ivi, cat. n. 229, p. 147), vicino al dipinto in esame anche sotto il profilo stilistico. Per accentuare l’approfondirsi dell’atteggiamento introspettivo comune all’intera sua produzione, negli anni cinquanta Sambo chiude le figure all’interno di spesse linee di contorno scure, quasi a voler sottolineare l’isolamento dell’uomo moderno e il suo bisogno/necessità di ripiegarsi su se stesso per non lasciarsi scalfire dagli eventi esterni. Questa soluzione compositiva, peraltro, si configura come un’evoluzione dell’attenzione alla plasticità delle forme che, pur percorrendo tutta la produzione dell’artista, si rafforza a seguito della citata vicinanza ai movimenti neoclassici che si affermano dal primo dopoguerra e del più recente neocubismo. Recuperando tonalità solari e una luce capace di creare marcate zone d’ombra, Sambo crea un’opera in cui vengono ribadite le qualità della sua arte, costantemente volta alla ricerca di semplicità compositiva, robustezza della figure, di un modo di procedere sintetico e del legame con la tradizione. Al tempo stesso, tuttavia, questi stessi sono i principi che, essendo perseguiti dalle più moderne correnti pittoriche, pongono Sambo a stretto contatto con il panorama artistico a lui contemporaneo confermandolo artista che, come ha voluto simboleggiare in Venus, tiene nella medesima considerazione passato e presente.Olio su telaFirmato al centro, sul lato destro ”E. Sembo”Edificio Centrale, Rettorat
CHARACTERIZATION OF FATTY ACIDS IN SAMBO OIL (CUCURBITA FICIFOLIA L.) FROM ECUADOR
No full text Objective: The aim of this study was to identify fatty acids in a sambo oil sample cultivated in Ecuador.Methods: Sambo oil was obtained from sambo seeds using the cold pressing method. Fatty acids analysis was carried out using the gas chromatography with a mass selective detector (MSD) and using the database Library NIST14.L to identify the compounds.Results: Sambo seeds have a high content of unsaturated fatty acids with 41.36% of oleic acid. Sambo oil has 37.77% of polyunsaturated fatty acids, of which 3.79% ɷ6 α- linoleic and 33.98% of ɷ3 α- linolenic. Sambo seeds only have 9.33% of palmitic acid.Conclusions: Sambo seed is a good source of monounsaturated fatty acids with a good content of ɷ3 α- linolenic. This profile enables their use as a good and healthy oil to be used in the food industry in Ecuador. </jats:p
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