41. Combined fit of spectrum and composition data as measured by the Pierre Auger ObservatoryAndrea Di Matteo, Andrej Filipčič, Gašper Kukec Mezek, Ahmed Saleh, Samo Stanič, Marta Trini, Darko Veberič, Serguei Vorobiov, Lili Yang, Danilo Zavrtanik, Marko Zavrtanik, 2015, objavljeni znanstveni prispevek na konferenci Opis: We present a combined fit of both flux and composition of
ultra-high energy cosmic rays as measured by the Pierre Auger
Observatory. The fit has been performed for energies above
5 × 10[sup]18 eV, i.e. the region of the all-particle spectrum
above the so-called “ankle” feature. A simple astrophysical model consisting of identical sources has been adopted, where
nuclei are injected with a rigidity dependent mechanism and the
sources are uniformly distributed in a comoving volume.
The fit results suggest a source model characterized by
relatively low maximum injection energies and hard spectral
indices. The impact of different sources of systematic
uncertainties in the above result is discussed.
Ključne besede: Pierre Auger Observatory, ultra-high energy cosmic rays, energy spectrum, elemental composition, combined data fit
Objavljeno v RUNG: 03.03.2016; Ogledov: 4534; Prenosov: 231
 Celotno besedilo (704,98 KB) |
42. Reducing treatments in cattle superovulation protocols by combining a pituitary extract with a 5% hyaluronan solution: Is it able to diminish activation of the hypothalamic pituitary adrenal axis compared to the traditional protocol?Andrea Biancucci, Tatiana Sbaragli, Antonella Comin, Lakamy Sylla, Maurizio Monaci, Tanja Peric, Giuseppe Stradaioli, 2016, izvirni znanstveni članek Opis: Traditional superovulation protocols that include multiple gonadotropin treatments are time-consuming and labor intensive. These protocols require multiple handling and restraining of embryo donors. This will likely increase the risks of injuries in both animals and humans and induce stress that may lead to a reduced superovulatory response. These are more evident when working with cattle that are rarely handled or raised on extensive grazing. The objectives of this experiment were to compare the efficacy of a split-injection protocol of porcine pituitary-derived porcine FSH (pFSH) preparation (slow release [SR] group) to the traditional 4-day treatment with pFSH administered twice daily (C group) and to determine the concentrations of cortisol in the hair as a marker of activation of the hypothalamic-pituitary-adrenal (HPA) axis during the two superovulatory treatments. Thirty-two heifers were stimulated twice in a 2 × 2 crossover design and compared for ovarian response and numbers and characteristics of recovered ova-embryo among treatments. No differences between SR and C groups were found in terms of percentage of responsive animals (100% vs. 93.8%) and ovulation rate (83.7 ± 1.1 vs. 79.5 ± 1.0%). A positive correlation was found between the number of follicles responsive to pFSH (2-8 mm) at the beginning of treatments and the superovulatory response, and no differences were found in these follicular populations between the two treatment groups. The numbers of CLs, ova-embryos, fertilized ova, transferable and freezable embryos recovered per cow were found to be significantly higher in SR compared with C group (14.0 ± 1.6 vs. 10.6 ± 1.0, 12.1 ± 1.6 vs. 7.6 ± 1.0, 11.1 ± 1.1 vs. 7.3 ± 1.0, 9.6 ± 1.4 vs. 6.6 ± 1.0, and 9.4 ± 1.4 vs. 6.0 ± 1.0 for SR and C group, respectively). The SR group produced also a significantly greater number of excellent- and/or good-quality embryos compared with the C group. The concentrations of cortisol in the hair at Days 14 and 21 were significantly greater in the C compared with the SR group (P < 0.05). In conclusion, these results indicate that the dilution of gonadotropin in a 5% hyaluronan solution, reducing the administration frequency, improves the quantitative and qualitative superovulatory response of Marchigiana heifers. Further studies using other breeds of cattle are needed to verify the results herein obtained and to confirm the lower activation of the hypothalamic-pituitary-adrenal axis caused in the donor by the split-injection protocol.
Ključne besede: Beef heifer, Bovine, Hair cortisol, Hyaluronic acid, Slow release, Superovulation
Objavljeno v RUNG: 01.03.2016; Ogledov: 4531; Prenosov: 312
Celotno besedilo (403,15 KB)
Gradivo ima več datotek! Več... |
43. Optimizacija optičnega nadzora naprave za površinsko montažo elektronskih komponentAndrea Torroni, 2015, diplomsko delo Opis: Namen diplomskega dela je odpravljanje napak na liniji za površinsko montažo elektronskih komponent (SMD). Delo na tej liniji je pokazalo, da so na izdelkih prisotne napake. Te zaradi problematičnega reševanja nepravilnosti zaustavljajo celotni proizvodni proces, za odpravljanje pa se porabi veliko časa. Proces ni več popolnoma avtomatski, kot se za to linijo zahteva. Težave nastajajo predvsem zaradi velikega števila težko predvidljivih vzrokov, ki povzročajo napake. Te lahko nastajajo na vseh napravah linije, glede na nastanek pa jih lahko zberemo v skupine.
S pomočjo nekaterih izdelkov bomo analizirali vse najpogostejše napake. Raziskali bomo realne vzroke za nepravilnosti na vseh napravah na liniji in opisali rešitve za nastale težave. Te bomo z lastnimi izkušnjami tudi utemeljili. S tem delom si bodo lahko operaterji in drugi, ki jih zanima delo na tej liniji, pomagali pri reševanju napak. Opisi reševanja napak naj bi operaterje vodili k hitremu in trajnemu odpravljanju napak.
Ocenili bomo, kolikšne so časovne izgube zaradi nepravilnosti oziroma kolikšen delež časovne optimizacije lahko dosežemo z odpravljanjem določenega števila napak. Cilj je doseči vsaj 5-% časovno izboljšavo na celotni proizvodnji elektronskih vezij. To bo za podjetje pomenilo znaten prihranek. Delo bo prineslo tudi nova zavedanja o pomembnosti odpravljanja napak na liniji.
Ključne besede: elektronika, površinska montaža elementov, avtomatska optična inšpekcija, napake, izboljšave
Objavljeno v RUNG: 05.10.2015; Ogledov: 6701; Prenosov: 290
Celotno besedilo (1,75 MB) |
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46. Comparison of P2X and TRPVI receprtors in ganglia or primary culture of trigeminal neurons and their modulation by NGF or serotoninManuela Simonetti, Alessandro Fabbro, Marianna D'Arco, Marina Zweyer, Andrea Nistri, Rashid Giniatullin, Elsa Fabbretti, 2006, izvirni znanstveni članek Ključne besede: nevroni, P2X, TRPVI, molekularna biologija
Objavljeno v RUNG: 15.10.2013; Ogledov: 5865; Prenosov: 33
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50. Expression, function and modulation of P2X [sub] 3 receptors on trigeminal ganglion nociceptorsAndrea Nistri, Elsa Fabbretti, Alessandro Fabbro, Marianna D'Arco, Manuela Simonetti, Rashid Giniatullin, 2006, objavljeni povzetek znanstvenega prispevka na konferenci Ključne besede: bolečina, migrena, nevroni, ATP
Objavljeno v RUNG: 15.10.2013; Ogledov: 5631; Prenosov: 25
Povezava na celotno besedilo |
