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Search Results: 1 - 10 of 167603 matches for " E. Taralli "
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High intrinsic energy resolution photon number resolving detectors
L. Lolli,E. Taralli,C. Portesi,E. Monticone,M. Rajteri
Physics , 2013,
Abstract: Transition Edge Sensors (TESs) are characterized by the intrinsic figure of merit to resolve both the energy and the statistical distribution of the incident photons. These properties lead TES devices to become the best single photon detector for quantum technology experiments. For a TES based on titanium and gold has been reached, at telecommunication wavelength, an unprecedented intrinsic energy resolution (0.113 eV). The uncertainties analysis of both energy resolution and photon state assignment has been discussed. The thermal properties of the superconductive device have been studied by fitting the bias curve to evaluate theoretical limit of the energy resolution.
Self consistent, absolute calibration technique for photon number resolving detectors
A. Avella,G. Brida,I. P. Degiovanni,M. Genovese,M. Gramegna,L. Lolli,E. Monticone,C. Portesi,M. Rajteri,M. L. Rastello,E. Taralli,P. Traina,M. White
Physics , 2011, DOI: 10.1364/OE.19.023249
Abstract: Well characterized photon number resolving detectors are a requirement for many applications ranging from quantum information and quantum metrology to the foundations of quantum mechanics. This prompts the necessity for reliable calibration techniques at the single photon level. In this paper we propose an innovative absolute calibration technique for photon number resolving detectors, using a pulsed heralded photon source based on parametric down conversion. The technique, being absolute, does not require reference standards and is independent upon the performances of the heralding detector. The method provides the results of quantum efficiency for the heralded detector as a function of detected photon numbers. Furthermore, we prove its validity by performing the calibration of a Transition Edge Sensor based detector, a real photon number resolving detector that has recently demonstrated its effectiveness in various quantum information protocols.
Usefulness of Whole-Body Fluorine-18-Fluorodeoxyglucose Positron Emission Tomography in Patients with Neurofibromatosis Type 1: A Systematic Review
Giorgio Treglia,Silvia Taralli,Francesco Bertagna,Marco Salsano,Barbara Muoio,Pierluigi Novellis,Maria Letizia Vita,Fabio Maggi,Alessandro Giordano
Radiology Research and Practice , 2012, DOI: 10.1155/2012/431029
Abstract: Aim. To systematically review the role of positron emission tomography (PET) with fluorine-18-fluorodeoxyglucose (FDG) in patients with neurofibromatosis type 1 (NF1). Methods. A comprehensive literature search of published studies regarding FDG-PET and PET/CT in patients with NF1 was performed. No beginning date limit and language restriction were used; the search was updated until December 2011. Only those studies or subsets in studies including whole-body FDG-PET or PET/CT scans performed in patients with NF1 were included. Results. We identified 12 studies including 352 NF1 patients. Qualitative evaluation was performed in about half of the studies and semiquantitative analysis, mainly based on different values of SUV cutoff, in the others. Most of the studies evaluated the role of FDG-PET for differentiating benign from malignant peripheral nerve sheath tumors (MPNSTs). Malignant lesions were detected with a sensitivity ranging between 100% and 89%, but with lower specificity, ranging between 100% and 72%. Moreover, FDG-PET seems to be an important imaging modality for predicting the progression to MPNST and the outcome in patients with MPNST. Two studies evaluated the role of FDG-PET in pediatric patients with NF1. Conclusions. FDG-PET and PET/CT are useful methods to identify malignant change in neurogenic tumors in NF1 and to discriminate malignant from benign neurogenic lesions. 1. Introduction Neurofibromatosis type 1 (NF1) is an autosomal dominant disease with an incidence of 1 in 2,500 to 1 in 3,000 subjects. Neurofibroma, a benign peripheral nerve sheath tumor, is the most common tumor in NF1 patients and may manifest as focal nodular, cutaneous or subcutaneous lesion, intraforaminal spinal nerve root tumor, or plexiform neurofibroma (PNF). Patients with NF1 have an increased risk of developing malignant peripheral nerve sheath tumors (MPNSTs) with a life-time risk of 8–12% [1–6]. MPNSTs usually arise from preexisting benign PNF, metastasize widely, and frequently have a poor prognosis. Therefore, differentiating between benign and malignant tumors in patients with NF1 has important prognostic and therapeutic implications, but can be difficult, especially in individuals who have multiple benign tumors. Optimal management is dependent on early and accurate histological grading and staging of the disease, but MPNSTs are often difficult to detect and may metastasize to many different sites. Pain, rapid increase in size of a neurofibroma, and the development of neurological deficit are clinical indicators of malignancy, but may also be features
18?F-fluoro-deoxy-glucose focal uptake in very small pulmonary nodules: fact or artifact? Case reports
Maria Lucia Calcagni, Silvia Taralli, Fabio Maggi, Vittoria Rufini, Giorgio Treglia, Lucia Leccisotti, Lorenzo Bonomo, Alessandro Giordano
World Journal of Surgical Oncology , 2012, DOI: 10.1186/1477-7819-10-71
Abstract: We report five cases of oncologic patients showing focal lung 18?F-FDG uptake on PET-CT in nodules smaller than 1?cm. We also discuss the most common causes of 18?F-FDG false-positive and false-negative results in the pulmonary parenchyma.In patient 1, contrast-enhanced CT performed 10?days before PET-CT did not show any abnormality in the site of uptake; in patient 2, high-resolution CT performed 1?month after PET showed a bronchiole filled with dense material interpreted as a mucoid impaction; in patient 3, contrast-enhanced CT performed 15?days before PET-CT did not identify any nodules; in patients 4 and 5, contrast-enhanced CT revealed a nodule smaller than 1?cm which could not be characterized. The 18?F-FDG uptake at follow-up confirmed the malignant nature of pulmonary nodules smaller than 1?cm which were undetectable, misinterpreted, not recognized or undetermined at contrast-enhanced CT.In all five oncologic patients, 18?F-FDG was able to metabolically characterize as malignant those nodules smaller than 1?cm, underlining that: 18?F-FDG uptake is not only a function of tumor size but it is strongly related to the tumor biology; functional alterations may precede morphologic abnormalities. In the oncologic population, especially in higher-risk patients, PET can be performed even when the nodules are smaller than 1?cm, because it might give an earlier characterization and, sometimes, could guide in the identification of alterations missed on CT.
Quantum characterization of superconducting photon counters
Giorgio Brida,Luigi Ciavarella,Ivo P. Degiovanni,Marco Genovese,Lapo Lolli,Maria G. Mingolla,Fabrizio Piacentini,Mauro Rajteri,Emanuele Taralli,Matteo G. A. Paris
Physics , 2011, DOI: 10.1088/1367-2630/14/8/085001
Abstract: We address the quantum characterization of photon counters based on transition-edge sensors (TESs) and present the first experimental tomography of the positive operator-valued measure (POVM) of a TES. We provide the reliable tomographic reconstruction of the POVM elements up to 11 detected photons and M=100 incoming photons, demonstrating that it is a linear detector.
Cluster Model of Formation of Subnuclear and Subatomic Objects  [PDF]
E. E. Lin
Journal of Modern Physics (JMP) , 2014, DOI: 10.4236/jmp.2014.53018
Abstract:

The paper describes the development results on one-dimensional (1D) asymptotic model of the formation kinetics for the objects (clusters) of subnuclear (quark) and subatomic (nuclear) matters. A concept of the objects distribution density wave φ(a, t) in space of sizes a lies in the basis for analytical description of the processes under consideration. The proposed formalism makes it possible to describe in an adequate way the final outcomes of the well-known catastrophic phenomena in the world of elementary particles. Mass characteristics of different processes of approach to equilibrium in nuclear reactions are calculated.

The Gene as Natural Nanomaterial for Treatment of Diseases  [PDF]
E. E. Escultura
Open Journal of Biophysics (OJBIPHY) , 2017, DOI: 10.4236/ojbiphy.2017.71003
Abstract: As an application of the grand unified theory (GUT) to medicine, this paper introduces two natural nanomaterials—the gene and electromagnetic wave. They are involved in the proposed treatment of genetic and infectious diseases. It introduces the superstring as the fundamental building block of matter and the basic constituent of dark matter, one of the two fundamental states of matter. It also introduces the primum, unit of visible or ordinary matter, the other fundamental state of matter. They are convertible to each other by the action of basic cosmic or electromagnetic waves. Eleven biological laws define biology as a biological and physical theory. The gene is the primitive ingredient of living things and, therefore, the beginning of biological life and the virus the simplest living thing. Treatment ranges from genetic modification and alteration to remove undesirable symptom through genetic sterilization to stop the spread of the disease and outright destruction of the disease. Genetic sterilization and outright destruction apply also to infectious diseases. The paper concludes with a blueprint for research and development of appropriate technologies for the treatment.
Extensions of the Constructivist Real Number System  [PDF]
E. E. Escultura
Advances in Pure Mathematics (APM) , 2018, DOI: 10.4236/apm.2018.88044
Abstract: The paper reviews the most consequential defects and rectification of traditional mathematics and its foundations. While this work is only the tip of the iceberg, so to speak, it gives us a totally different picture of mathematics from what we have known for a long time. This journey started with two teasers posted in SciMath in 1997: 1) The equation 1 = 0.99… does not make sense. 2) The concept \"\"?does not exist. The first statement sparked a debate that raged over a decade. Both statements generated a series of publications that continues to grow to this day. Among the new findings are: 3) There does not exist nondenumerable set. 4) There does not exist non-measurable set. 5) Cantor’s diagonal method is flawed. 6) The real numbers are discrete and countable. 7) Formal logic does not apply to mathematics. The unfinished debate between logicism, intuitionism-constructivism and formalism is resolved. The resolution is the constructivist foundations of mathematics with a summary of all the rectification undertaken in 2015, 2016 and in this paper. The extensions of the constructivist real number system include the complex vector plane and transcendental functions. Two important results in the 2015 are noted: The solution and resolution of Hilbert’s 23 problems that includes the resolution of Fermat’s last theorem and proof Goldbach’s conjecture.
ЕЛЕКТРОХ М ЧНИЙ СИНТЕЗ Д ОКСИДУ МАНГАНУ В ПРИСУТНОСТ ОН В Fe2+ ТА Co2+ Electrochemical synthesis of manganese dioxide in the presence of ions Fe2+ and Co2+ Электрохимический синтез диоксида марганца в присутствии ионов Fe2+ и Co2+
Г.В. Сокольський,Н.Д. ?ванова,С.В. ?ванов,E.?. Болдир?в
Proceedings of National Aviation University , 2009,
Abstract: Зразки д оксиду мангану отримано методом анодного осадження з фторвм сних електрол т в на основ сульфату мангану у присутност дом шок он в двовалентних зал за або кобальту. Отриман продукти характеризувалися методами ААС та ДТА. Проанал зовано вплив дом шок он в зал за кобальту на х м чний склад отриманих зразк в Manganese dioxide samples have been prepared by the anode deposition from fluoride containing electrolytes based on manganese sulphate at the presence of additives of iron(II), cobalt(II) ions. Obtained materials were characterised with AAS and DTA. The influence of doping by ions of iron(II) and cobalt(II) on the chemical composition of the samples obtained has been analysed. Образцы диоксида марганца получены методом анодного осаждения из фторсодержащих электролитов на основе сульфата марганца в присутствии примесей ионов двухвалентных железа или кобальта. Полученные продукты характеризовались методами ААС и ДТА. Проанализировано влияние примесей ионов железа и кобальта на химический состав полученных образцов.
Numerical Investigations of a New N-body Simulation Method  [PDF]
E. Vilkoviskij
International Journal of Astronomy and Astrophysics (IJAA) , 2012, DOI: 10.4236/ijaa.2012.23016
Abstract: Numerical investigation of a new similarity method (the Aldar-Kose method) for N-body simulations is described. Using this method we have carried out numerical simulations for two tasks: 1) calculation of the temporal behavior of different physical parameters of active galactic nuclei (AGN) containing a super massive black hole (SMBH), an accretion disk, and a compact stellar cluster; 2) calculation of the stellar capture rate to the central SMBH without accretion disk. The calculations show good perspectives for applications of the similarity method to optimize the evolution model calculations of large stellar systems and of AGN.
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