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Search Results: 1 - 10 of 234 matches for " Bertolini "
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Frédéric Rousseau, Il bambino di Varsavia. Storia di una fotografia
Bertolini, Frida
Storicamente , 2011,
Abstract: review of Frédéric Rousseau, Il bambino di Varsavia. Storia di una fotografia
IMPACT OF ADVANCED REPRODUCTIVE BIOTECHNOLOGIES ON ANIMAL HEALTH AND LIVESTOCK PRODUCTION EL IMPACTO DE LA BIOTECNOLOGíA REPRODUCTIVA AVANZADA EN LA SALUD Y LA REPRODUCCIóN ANIMAL
Bertolini Marcelo
Revista de la Facultad de Medicina Veterinaria y de Zootecnia , 2009,
Abstract: The in vitro production of bovine embryos by in vitro fertilization or nuclear transfer procedures is a powerful tool in wide use for scientific, conservationist and commercial purposes. However, developmental abnormalities are unpredictable consequences of such in vitro embryo manipulations, which may interfere with the pattern of fetal and placental growth and life ex utero, in a set of symptoms collectively called Large Offspring Syndrome (LOS). The economical significance of the syndrome is associated with increased rates of pregnancy losses, placental and fetal aberrations that culminate in abortion, hydrops of the fetal membranes, prolonged gestation, diminished signs of parturition, dystocia, and birth of large calves with lower postnatal survival. Lower pregnancy rates with higher gestational and postnatal losses represent significant economical losses for a lower prolificacy. The understanding of mechanisms of prenatal growth in normal development and in those related to the syndrome will be of significance for prevention or attenuation of abnormalities of common occurrence in cattle, with potential direct scientific and economical implications. La producción in vitro de embriones por fertilización in vitro o por procedimientos de transferencia de núcleos es una herramienta poderosa utilizada ampliamente para propósitos científicos, conservacionistas y comerciales. Sin embargo, las alteraciones del desarrollo son consecuencias impredecibles de tales manipulaciones in vitro, que pueden interferir con el patrón de de crecimiento fetal y placentario y la vida ex utero, que se agrupan en unos síntomas conocidos colectivamente como el síndrome del ternero grande (LOS). La importancia económica del síndrome está asociada con un incremento en las pérdidas gestacionales, aberraciones placentarias y fetales que culminan en aborto, condiciones hidópicas de las membranas fetales, gestaciones prolongadas, disminución en los signos de parto, distocias, y nacimiento de terneros grandes con baja supervivencia postnatal. Las bajas tasas de pre ez con las altas tasas de pérdidas gestacionales representan pérdidas económicas significativas por baja prolificidad. El entendimiento de los mecanismos de crecimiento prenatal durante el desarrollo normal y en aquellos relacionados con el síndrome sería muy significativo en la prevención, atenuación de las anormalidades de ocurrencia común en el ganado, con implicaciones directas a nivel científico y económico.
Incidental Intracranial Aneurysm in a Dog Detected by 16-Multidetector Row Computed Tomography Angiography
Giovanna Bertolini
Case Reports in Veterinary Medicine , 2013, DOI: 10.1155/2013/932746
Abstract:
Incidental Intracranial Aneurysm in a Dog Detected by 16-Multidetector Row Computed Tomography Angiography
Giovanna Bertolini
Case Reports in Veterinary Medicine , 2013, DOI: 10.1155/2013/932746
Abstract: This paper describes a small intracranial aneurysm incidentally found in a 24-month-old Nova Scotia Duck Tolling Retriever evaluated for a recent history of lethargy, fever, and cervical pain. The clinicopathological analysis revealed leukocytosis, and increased haptoglobin and C-reactive protein consistent with severe flogistic process. Nonenhanced computed tomography of the brain and cervical spine showed a diffuse encephalopathy and moderate cervical syringohydromyelia. Computed tomography angiography series of the brain showed a small saccular dilation at the joining point of the two rostral cerebral arteries consistent with a small aneurysm. Cerebrospinal fluid examination led to the final diagnosis of aseptic meningitis. The dog was discharge with a long-term corticosteroid therapy for the meningitis. At two-month follow-up evaluation, the cerebrospinal fluid examination was normal and the computed tomography of the brain showed no abnormalities except for the stable aneurysm. To our knowledge, this is the first description of a spontaneous cerebral aneurysm in dogs and serves to broaden the spectrum of cerebrovascular diseases in this species. 1. Introduction A brain aneurysm is an abnormal, outward pouching of the artery wall caused by a weakness in the wall of an artery that supplies the brain. In humans, the prevalence of this condition is about 5%. Approximately, 85% of aneurysms develop in the anterior portion of the circulation of the brain and are asymptomatic until they rupture [1–3]. Cerebral aneurysms are classified based on a number of features including etiology, size, shape, the association with the specific intracranial branch, or according to their angioarchitecture features [2, 4–6]. To date, very little is known concerning the type and incidence of variants and anomalies of the cerebrovascular system in dogs and cats [7–9]. Historically, few cases of cerebral hemorrhage in dogs were thought to be correlated to aneurysm, but their existence could not be proved [10]. To the authors knowledge, this is the first description of a spontaneous cerebral aneurysm in dogs. 2. Case Presentation A 24-month-old 22?kg intact male Nova Scotia Duck Tolling Retriever was evaluated for a recent history of lethargy, fever, and cervical pain. Medical history included another episode of cervical pain that has occurred one year before and rapidly improved with corticosteroid therapy for few days. At the time of presentation, the dog was receiving amoxicillin/clavulanic acid for 2 days (10?mg/kg PO q12). At physical examination, the dog showed
Vibration diagnostics instrumentation for ILC
A. Bertolini
Physics , 2007, DOI: 10.1088/0957-0233/18/8/002
Abstract: The future e-e+ 500 GeV International Linear Collider will rely on unprecedented nanometer scale particle beam size at the interaction point, in order to achieve the design luminosity. Tight tolerances on static and dynamic alignment of the accelerator cavities and optical components are demanded to transport and focus the high energy electron and positron beams with reasonable position jitter and low emittance. A brief review of techniques and devices evaluated and developed so far for the vibration diagnostics of the machine is presented in this paper.
A New Estimate of $\varepsilon '/\varepsilon$
S. Bertolini
Physics , 1996,
Abstract: We discuss a new estimate of $\varepsilon '/\varepsilon$ in the kaon system. The present approach is based on the evaluation of the hadronic matrix elements of the \mbox{$\Delta S =1$} effective quark lagrangian by means of the chiral quark model, with the inclusion of meson one-loop renormalization and NLO Wilson coefficients. The estimate here reviewed is fully consistent with the $\Delta I =1/2$ selection rule in $K\to \pi\pi$ decays, which is well reproduced within the same framework.
Calculation of epsilon'/epsilon
Stefano Bertolini
Physics , 2002, DOI: 10.1063/1.1478825
Abstract: I shortly review the present status of the theoretical calculations of epsilon'/epsilon and the comparison with the present experimental results. I discuss the role of higher order chiral corrections and in general of non-factorizable contributions for the explanation of the Delta I = 1/2 selection rule and direct CP violation in kaon decays. Still lacking reliable lattice calculations, analytic methods and phenomenological approaches are helpful in understanding correlations among theoretical effects and the experimental data. Substantial progress from lattice QCD is expected in the coming years.
Four Lectures On The Gauge/Gravity Correspondence
M. Bertolini
Physics , 2003, DOI: 10.1142/S0217751X03016811
Abstract: We review in a pedagogical manner some of the efforts aiming to extend the gauge/gravity correspondence to non-conformal supersymmetric gauge theories in four dimensions. After giving a general overview, we discuss in detail two specific examples: fractional D-branes on orbifolds and D-branes wrapped on supersymmetric cycles of Calabi-Yau spaces. We explore in particular which gauge theory information can be extracted from the corresponding supergravity solutions, and what the remaining open problems are. We also briefly explain the connection between these and other approaches, such as fractional branes on conifolds, branes suspended between branes, M5-branes on Riemann surfaces and M-theory on G2-holonomy manifolds, and discuss the role played by geometric transitions in all that.
The Delta I = 1/2 Rule and epsilon'/epsilon in the Chiral Quark Model
Stefano Bertolini
Physics , 2000,
Abstract: I discuss the role of the Delta I = 1/2 selection rule in K -> pi pi decays for the theoretical calculations of eps'/eps. Lacking reliable ``first principle'' calculations, phenomenological approaches may help in understanding correlations among different contributions and available experimental data. In particular, in the chiral quark model approach the same dynamics which underlies the Delta I = 1/2 selection rule in kaon decays appears to enhance the K -> pi pi matrix elements of the gluonic penguins, thus driving eps'/eps in the range of the recent experimental measurements.
Theory of epsilon'/epsilon
Stefano Bertolini
Physics , 2000,
Abstract: I shortly review the present status of the theoretical estimates of eps'/eps. I consider a few aspects of the theoretical calculations which may be relevant in understanding the present experimental results. In particular, I discuss the role of final state interactions and in general of non-factorizable contributions for the explanation of the Delta I = 1/2 selection rule in kaon decays and eps'/eps. Lacking reliable ``first principle'' calculations, phenomenological approaches may help in understanding correlations among theoretical effects and the experimental data. The same dynamics which underlies the CP conserving selection rule drives eps'/eps in the range of the recent experimental measurements.
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