Beam vibration due movement of overweight cargoes on reinforced concrete bridges at different ground conditions

The article deals with the vibrations of a reinforced concrete bridge whose supports are located in soils with different properties under the action of overweight cargoes. The assumption is made that the structure deformed in the elastic zone when Hooke's law is valid. The Fourier method is used to solve the problem. The results are presented as graphs of changes in stresses and deflections along the coordinate and time, which are accompanied by analysis. When a concentrated load is applied, depending on the stiffness coefficient of the connection between the supports and the ground, stresses exceeding the limit load can occur in the middle of the beam cross-section. Thus, in the calculations, it is necessary to consider the nature of the interaction of the supports with the surrounding soils when calculating the beams for the action of moving loads

Proton-Deuteron Elastic Scattering from 2.5 to 22.5 MeV

We present the results of a calculation of differential cross sections and polarization observables for proton-deuteron elastic scattering, for proton laboratory energies from 2.5 to 22.5 MeV. The Paris potential parametrisation of the nuclear force is used. As solution method for the charged-composite particle equations the 'screening and renormalisation approach' is adopted which allows to correctly take into account the Coulomb repulsion between the two protons. Comparison is made with the precise experimental data of Sagara et al. [Phys. Rev. C 50, 576 (1994)] and of Sperison et al. [Nucl. Phys. A422, 81 (1984)].Comment: 24 pages, 8 eps figures, uses REVTe

CMS physics technical design report : Addendum on high density QCD with heavy ions

Peer reviewe

USING INFORMATION OF HISTORY OF CHEMISTRY, EFFECTIVE FACTORS OF GETTING KNOWLEDGE OF STUDENTS

This article dissusses the history materials in higher education institutions and the need to improve the course of chemistry History

Preparing Future Chemistry Teachers to Introduce Reproduction

Our article develops the scientific and methodological basis of education to acquaint future chemistry teachers with the production of students. Students are prepared conditionally technological

Technologies for Forming Critical Thinking in Primary School Students.

In today's complex and globalized world, in order to have a deep understanding of the events taking place in the world, to understand the essence of their content, it is necessary to have a high level of independent thinking culture. Because it is necessary to have a deep understanding of the realities that are happening around us, to be able to think independently in order to get to the essence of their content. This, in turn, creates a need to shape students' critical thinking skills in the learning process. The article discusses the technologies of forming critical thinking in primary school students and their content

MODERNIZATION OF THE TECHNOLOGICAL CYCLE OF CEMENT GRINDING ON THE BASIS OF MICROPROCESSOR TECHNOLOGY

The paper considers issues related to the implemented project of the automated process control system, the management of cement grinding mills. We describe the technology of clinker milling, the technology of cement extrusion and the technology of production mobility based on the technology of clinker milling, the technology of cement refining and the technology of production modernization based on modern means of automatization

Constituents of Encyclia longifolia Schltr. (Orchidaceae)

A detailed chemical analysis of the non-volatile secondary metabolites of Encyclia longifolia Schltr. syn. Epidendrum longifolium Barb. Rodr. was carried out in an attempt to lend a chemotaxonomic support for the recent separation of the genus Encyclia into Encyclia Hook and Prosthechea Knowles & Westc

The CMS experiment at the CERN LHC

The Compact Muon Solenoid (CMS) detector is described. The detector operates at the Large Hadron Collider (LHC) at CERN. It was conceived to study proton-proton (and lead-lead) collisions at a centre-of-mass energy of 14 TeV (5.5 TeV nucleon-nucleon) and at luminosities up to 10(34)cm(-2)s(-1) (10(27)cm(-2)s(-1)). At the core of the CMS detector sits a high-magnetic-field and large-bore superconducting solenoid surrounding an all-silicon pixel and strip tracker, a lead-tungstate scintillating-crystals electromagnetic calorimeter, and a brass-scintillator sampling hadron calorimeter. The iron yoke of the flux-return is instrumented with four stations of muon detectors covering most of the 4 pi solid angle. Forward sampling calorimeters extend the pseudo-rapidity coverage to high values (vertical bar eta vertical bar <= 5) assuring very good hermeticity. The overall dimensions of the CMS detector are a length of 21.6 m, a diameter of 14.6 m and a total weight of 12500 t