American Journal of Scientific Research and Essays

Oral Appliances Indications in Obstructive Sleep Apnea

Review article of American Journal of Scientific Research and Essays 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 are devices used in the oral cavity during sleep avoiding an obstruction of the oropharynx. These are classified as lingual, mandibular and/or conjugate control devices. Objective: To describe the OA models and to make explicit the indication of each one for the type of apnea in question. Methodology: A database was searched (Pubmed, Scielo) using the following documents: Intraoral device, lingual control, mandibular advancement, indication. Publications from 2010 to 2017 were included in the Portuguese and English languages whose content was pertinent to the theme. Results and Discuss: 60 articles were found. Of these, 24 directly addressed the theme and only 4 articles were used. A practicality and comfort provided by the OAs make them more accepted and indicated for OSA. The indications for the use of OAs include: patients with the diagnosis of mild, moderate and severe OSA. The lingual control device is based on control of the positioning of the aforementioned organ and is indicated for patients with extensive dental loss, edentulous, periodontal problems, temporomandibular dysfunction and bruxism. The most commonly indicated mandibular advancement OA is retained by teeth and protrudes the mandible in order to increase the volume of the oropharynx. Ideal for patients with at least 10 teeth in each arch and on a semi-flexible model for ...

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

Research article of American Journal of Scientific Research and Essays 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 springs in Anderacha wereda, sheka zone south west of Ethiopia. Water samples collected were analyzed for physicochemical parameters such as temperature, pH, conductivity, total hardness,Cl-, NO3-,NO2-,CO32-,PO43-,Co,Cd,Cu,Zn,Mn,Fe, Mg,Ca,Cr,Ni and Pb using standard analytical methods, Analysis of official analytical chemist 1990. . The obtained results of each parameter are comparable with the standard values set by WHO and other national guidelines. The values of most physicochemical parameters were found to be within the recommended permissible limits except temperature, Fe,Cu and Mn. These outcomes demonstrate the need to come up with water source protection strategies for the study area. Keywords:  Anderacha, Coliforms, physicochemical, water quality ...


Review article of American Journal of Scientific Research and Essays 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 ages prove that the namr of “Trepca” for the first is mentioned in the Dubrovnik’s archive in 1303. In this study we’re going to treat the destroyment of Trepca, during the Ottoman leading since 1445 till the 20th cebtury. The historical importance of Trepca’s mine is Stanterg is a big and valuable as it is impossible to describe it in a few words. However, I have tried to show it is a science manner and as a historical, economic and social issue during the 20th century. Keywords: TREPÇA’s MINE IN STANTERG, THE ANCIENT PERIOD, THE 20th CENTURY ...

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

Review article of American Journal of Scientific Research and Essays 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 propagation of light in vacuum and matter. All the theories of the propagation of light that ignore the Laws of Optics can, therefore, be considered an error in physics. The theories and laws of propagation of light in matter were written by famous physicists, such as Isaac Newton (1670), Christiaan Huygens (1650), Augustin-Jean Fresnel (1819), and Thomas Young (1800). The law of propagation of light in matter was described by Snell in 1620. Snell’s law is the law of the light refractive index in matter. Optical instruments are calculated according to the Laws of Optics, so by their correct operation they confirm the validity of the Laws of Optics. Two hundred years ago, André-Marie Ampére expressed the basic approach in discovering the laws of physics: “First observe the facts, to vary their circumstances as much as possible, to accompany this first task with exact measurement so as to deduce from them the general laws based solely upon experience, and to deduce from these laws, independently of any hypothesis on the nature of the forces that produce the phenomena, the mathematical value of these forces”. This approach to the measurement of the light propagation is now used in all the laboratories around the world and, therefore, can be considered as objective and ...

Prof. Dr. Mohammad Mehdi Rashidi
Shanghai Key Lab of Vehicle Aerodynamics and Vehicle Thermal Management, Systems, Tongji Clean Energy Institute of advanced studies- Tongji University.

Dr. Milena Palczewska
Vice Dean for student affairs, Military Faculty, War Studies University, al. gen. Antoniego Chruściela “Montera” 10300-910 Warszawa

Dr. Piyush Chaudhary
Assistant Professor, Deptt of Ras Shastra (Ayurvedic Pharmaceutics), Incharge, Gurukul Pharmacy, MSM Institute of Ayurveda, BPS Women University, Khanpur Kalan, Sonepat, Haryana

Dr. M. M. Awad
Mechanical Power Engineering Department, Faculty of Engineering, Mansoura University, Mansoura, Egypt

Dr.Eng. Ahmed Kadhim Hussein
College of Engineering, Department of Mechanical Engineering, Babylon University, Babylon City, HIILA , IRAQ

Dr. KATSURA Hidemitsu 
Guest Lecturer for ICEEE-2016, Coimbatore Institute of Technology (CIT) in COIMBATORE, TAMIL NADU 641014, INDIA

Dr. Sang-Bing Tsai
Prof., School of Business, Dalian University of Technology, Panjin, 124221, China; Prof., Zhongshan Institute, University of Electronic Science and Technology of China; Prof., TEDA College, Nankai University, China

Dr. Deepmala 
Visiting Scientist, SQC & OR Unit, Indian Statistical Institute

Dr. Begum Sertyesilisik
Assoc. Prof. at the Istanbul Technical University

Dr. Palani Elumalai
National Research Foundation Fellow of Korea, Department of Chemistry & Biology, University of Ulsan

Dr. Shittu Lukeman Adelaja Joseph

Prof. Dr. Naqib Ullah Khan
Department of Plant Breeding and Genetics, The University of Agriculture, Peshawar 25130, Khyber Pakhtunkhwa, PAKISTAN.

Dr. V. Ananthaswamy
Assistant Professor, The Madura College (Autonomous), Madurai – 625 011, Tamil Nadu, India.

Prof. Dr. M.Nageeb Rashed
Professor of Analytical and Environmental Chemistry, Faculty of Science, Aswan University, Egypt

Dr. Hossein Kazemian
Faculty& Director; Northern Analytical Lab Services (NALS), University of Northern British Columbia (UNBC), 3333 University Way, Prince George, BC, Canada, V2N 4Z9

Dr. Vishnu Narayan Mishra
Applied Mathematics and Humanities Department, Sardar Vallabhbhai National Institute of Technology.

Dr. Balaram Kundu
Associate Professor, Department of Mechanical Engineering, Jadavpur University, Kolkata – 700 032, INDIA

Dr. Sergio Nardini
Associate Professor, Dipartimento di Ingegneria Industriale e dell’Informazione, Seconda Università degli Studi di Napoli, via Roma 29, 81031 Aversa (CE)

Dr. Sanjay Mishra
Professor, Department of Biotechnology, School of Engineering & Technology, IFTM University

Dr. Lakshmi Narayan Mishra
Professor, Department of Mathematics, National Institute of Technology

Dept.of Mathematics, Assistant Professor In Mathematics, Govt. Degree & PG College

Dr. S. Krishna Murthy
Associate Professor, Department of Applied Mathematics,Defence Institute of Advanced Technology, Deemed University(DU), Girinagar, Pune

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1. Shuo Zhang. Experimental study on scouring of coarse sand and fine sand seabed caused by propeller washing in front of solid wharf.American Journal of Scientific Research and Essays, 2018 3:14. DOI:10.28933/ajsre-2018-12-1805 
2.Zhang Bo and Xie Xionggang. Numerical simulation and analysis of coupled Thermal-Hydrological-Mechanical in coalbed methane heating mining. American Journal of Scientific Research and Essays, 2018 3:13. DOI:10.28933/ajsre-2018-12-0808 

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