24 research outputs found
Conceptual design of accelerator driven systems with light ion beams
The superior energy efficiency of light ion beams instead of proton beams for energy production in accelerator driven systems (ADS) is demonstrated. The energy efficiency is characterized by the energy gain calculated as the ratio of the energy released in the target to the energy spent for the beam acceleration. The energy deposited in the target is obtained via Geant4 simulation. A method to calculate the energy spent for the beam acceleration by scaling from the data for a reference beam is presented. The influence of the target structure on the energy efficiency of 0.5 - 4 GeV proton beams and 0.25 1 AGeV light ion beams is studied. The target consists of rods with different composition (metal, oxide, carbide) and different levels of enrichment in order to implement the target with a criticality coefficient keff of 0.96 - 0.97, which ensure safe operation. The influence of the rod dimensions, the coolant and converter on the neutron spectrum and energy released are analysed
Creation of the precision magnetic spectrometer SCAN-3
The new JINR project [1] is aimed at studies of highly excited nuclear matter created in nuclei by a high-energy deuteron beam. The matter is studied through observation of its particular decay products - pairs of energetic particles with a wide opening angle, close to 180°. The new precision hybrid magnetic spectrometer SCAN-3 is to be built for detecting charged (π±, K±, p) and neutral (n) particles produced at the JINR Nuclotron internal target in dA collisions. One of the main and complex tasks is a study of low-energy ηA interaction and a search for η-bound states (η-mesic nuclei). Basic elements of the spectrometer and its characteristics are discussed in the article
Studiul la Biblioteca de Științe Politice Filială a Complexului BCUB - Carol I
A brief guide for the study at Political Science Library, Bucharest, addressed especially to first year students
Study of neutron spectra in extended uranium target. New experimental data
The spatial distribution of neutron fluences in the extended uranium target (“Quinta” assembly) irradiated with 0.66 GeV proton, 4 AGeV deuteron and carbon beams was studied using the reactions with different threshold energy (Eth). The data sets were obtained with 59Co samples. The accumulation rates for the following isotopes: 60Co (Eth 0 MeV), 59Fe (Eth 3 MeV), 58Co (Eth 10 MeV), 57Co (Eth 20 MeV), 56Co (Eth 32 MeV), 47Sc (Eth 55 MeV), and 48V (Eth 70 MeV) were measured with HPGe spectrometer. The experimental accumulation rates were compared with the predictions of the simulations with Geant4 code. Substantial difference between the reconstructed and the simulated data for the hard part of the neutron spectrum was analyzed
Falsuri care au denaturat istoria / Forgeries that denatured history
From the words carried by the wind, that led to the onset of Anti-Semitism, to the written documents deliberately deceived, such as The Protocols of the Learned Elders of Zion, or The Tanaka Giichi Memorial, the forgeries have distorted history, and even if they have been proven continue to be belived. In the study we present, we show how the defamatory statements against the jewish people have gradually increased, from simple words to bloody pogroms, following them in their drive from West to East. When the interests, at first economic, then political, of the state where they took refuge were ``demanded``, Jewish people was culprit. The accusation of The Ritual Murder and The Jewish Deicide appeared near the crusades, promoters of Anti-Judaism, persisted until the early twentieth century. With the achievement of Emancipation in the European States, the accusation of Traitor and Conspirator are added. This mythology created for centuries reaches its peak of greatest Fals ``The Protocols of the Learned of Zion``, and the fake that persists and is often invoked today
Biblioteci Filiale din Complexul BCU-Carol I Biblioteca de Stiinte Politice Studiu de caz
In the contemporary society education is a national importance issue. Public education service was the base of economic and social evolution beginning with the modern period. Library management is applied today in all the academic libraries of the world and publications aquisitions is a fundamental activity in this context
"Carol I" Central University Library Continuous Training Program through Documentary Visits. A Documentary Visit to Cotroceni Museum
In this essay we aim to emphasize the role of documentary visits in continuous training programs of library professionals. As alternative form of continuous training, the "Carol I" Central University Library runs an annual program of documentary visits to Bucharest museums, in order to identify from the historical, biographical, literary, artistic and scientific perspective, the manner in which evolved Romanian spirituality nationally and beyond. As a form of initial training for national inheritance understanding, the professional visits to cultural institutions allows the discovery of the categories of collections, the structure and their pedagogical value in learning, teaching and training
Programul de Formare Continuă al Bibliotecii Centrale Universitare „Carol I” prin vizite documentare. O vizită documentară la Muzeul Cotroceni
În acest eseu ne propunem să subliniem rolul vizitelor de documentare în cadrul programelor de formare continuă a specialiștilor din biblioteci. Ca alternativă de formare continuă, Biblioteca Centrală Universitară „Carol I” derulează un program anual de vizite documentare la muzeele din București, pentru a observa și analiza din punct de vedere istoric, biografic, literar, artistic și științific, modul în care a evoluat spiritualitatea românească la nivel național, dar și în afara granițelor. Ca metodă de instruire inițială pentru înțelegerea moștenirii naționale, vizitele profesionale la instituții culturale permit descoperirea categoriilor de colecții, structura și valoarea lor pedagogică în procesul de învățare, predare și formare