Scientific Research and Essays

  • Research on the application of wheel pile foundation for transmission lines

    Research on the application of wheel pile foundation for transmission lines Yunsheng Xu1, Sheng Wang2 and Chunyan Li1 1Department of mechanical engineering, North China Electric Power University, Baoding 071000, Hebei; 2China Electric Power Construction Hebei electric survey and Design Research Institute Co., Ltd.,ShiJiazhuang 050000,Hebei Under the action of low pressure, the wheel pile foundation bears most or even all the downward pressure. When the wheel pile foundation is subjected to uplift force, the uplift force is supported by the short…

  • Implementation of IFOC Algorithm for a Three-Phase Induction Motor Embedded on DSP Microcontroller

    Implementation of IFOC Algorithm for a Three-Phase Induction Motor Embedded on DSP Microcontroller Denis Carlini Alexandre, Alexandre Simiao Caporali and Cesar da Costa IFSP Institute Federal of São Paulo, São Paulo, Brasil. Asynchronous machines are well known to have natural limitations because of the highly nonlinearity and complexity of their motor models. To resolve these problems, an indirect field-oriented control (IFOC) algorithm is applied to control the instantaneous electrical quantities such as torque and flux component. Medium-voltage drives are generally…

  • Design and adaptive control of omni-directional mobile platform with four driving wheels

    Design and adaptive control of omni-directional mobile platform with four driving wheels Weibin Zhang School of Mechanical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, P.R. China In this paper, a general kinematic model of the four drive wheel omnidirectional mobile platform is established, and the CMAC (Cerebellar model articulation controller) +PID joint control strategy is used to design the embedded adaptive control of the omnidirectional mobile platform in view of the problem that the conventional control can not…

  • The Importance of Dental Activity in Patients Inside in Intensive Therapy Unit

    The Importance of Dental Activity in Patients Inside in Intensive Therapy Unit Santos, G.A.1; Lucas Ramos, V.S.2; Santana, J.F.3; Lima, L.F.A.4; França, L.C.5; Maia, C.S. 6 1,2,3,4,5 Student of the Dentistry Course – UFPE; 6Docente / researcher of the Department of Embryology and Histology of UFPE. Introduction: Poor oral hygiene is common in ICU patients, which leads to colonization of the oral biofilm by pathogenic microorganisms, especially respiratory pathogens, which may be a source of nosocomial infection. Once the bacteria…

  • Clinical Conduct for a Bruxist Patient: Clinical Case Report

    Clinical Conduct for a Bruxist Patient: Clinical Case Report Araújo S.S.1; Trindade M.O.2; Arruda F.E.P.3; Fernandes G.A.4 1,3,4 Estudante do Curso de Odontologia – UFPE; 2Docente do Departamento de Prótese e Cirurgia Buco Facial – UFPE Introduction: Sleep bruxism is an activity of stereotyped movements promoted by the subconscious in the masticatory system that includes the functions of clenching and / or grinding, where neuromuscular protection mechanisms are absent, which can lead to damages to the masticatory system and temporomandibular…

  • Oral Appliances Indications in Obstructive Sleep Apnea

    Oral Appliances Indications in Obstructive Sleep Apnea França, L.C1, Santos, G.A2, Santana, J.F3; Ramos, L.V.S4, Lima, L.F.A5; Trindade, M.O6 1,2,3,4,5Student of Dentistry Course – UFPE; 6Professor of the Department of Prosthesis and Buco Facial Surgery – UFPE Introduction: Obstructive sleep apnea (OSA) is a respiratory disorder that causes upper airway obstruction during sleep. The performance of a dentist in patients with OSA is evidenced by the preparation and indication of the Oral Appliances (OA) as a treatment measure. The OAs…

  • Physicochemical Analysis of Hora and spring water bodies in Anderacha Woreda, Sheka Zone, South west Ethiopia

    Physicochemical Analysis of Hora and spring water bodies in Anderacha Woreda, Sheka Zone, South west Ethiopia Ahemd Awol (M.Sc in Inorganic Chemistry) Department of chemistry, Mizan-Tepi University, Tepi campus, Access to safe water is a worldwide need though, many of the world’s population lack access to adequate and safe water. Contaminated water jeopardizes both the physical and social health of all people. Hence the purpose of the research was to assess the physicochemical analysis of hora/salty unprotected springs and protected…

  • TREPÇA’s MINE IN STANTERG SINCE THE ANCIENT PERIOD TILL THE 20th CENTURY

    TREPÇA’s MINE IN STANTERG SINCE THE ANCIENT PERIOD TILL THE 20th CENTURY Mustafe Haziri The mine of Trepca in Stanterg has had a big economic importance since the earlier period to now. Even if there is not any written source about the development in this times, some signs prove the begining of the mine activities since the ilyrian period. The archelogyc documents prove the cink and leaden in TREPCA, are used for more than 2000 years. The documents of middle…

  • The Theory of Relativity is an Error in Physics; the Speed of Light excludes the Laws of Optics

    The Theory of Relativity is an Error in Physics; the Speed of Light excludes the Laws of Optics Jozef Babiak Physicists measured the propagation of light in vacuum and matter through experiments with light over the course of several centuries. The Laws of Optics were derived from these measured results. The Laws of Optics were verified repeatedly via real experiments with light and used in the calculations of optical instruments that work properly. The Laws of Optics accurately define the…

  • The Doppler effect of spectral lines and shift of the frequency of light in space

    The Doppler effect of spectral lines and shift of the frequency of light in space Jozef Babiak The Doppler effect of spectral lines in space is the change in the frequency of light emitted by an illuminated celestial body, which moves closer or farther away from the Earth in vacuum. A description of the change in light frequency is realized with the assumption that an illuminated celestial body in vacuum moves closer or farther away from the observer in vacuum….