Physical Sciences and Engineering

The primary notion of gas leakage detection is the implementation of a protection framework for the detection of gas leakage in a closed environment. In the current situation, there are various criteria linked with gas leaks that have an influence on the lives and property of innocent people. This warning system, which can save people's lives, can be advantageous for businesses and homes. In this project, a SIM900 (GSM module) is utilised to complete the desired task by combining a gas sensor (MQ6), a buzzer, an Arduino UNO, a 5V stepper motor, and an LCD display.

The detection result of acoustic monitoring was compared to visual observations in a 4-D seismic survey. Data was collected on board The MV Osprey Explorer (Seabird)cruising at the speed of 4.6 ±4 nautical miles.

In this paper we present a java implementation of video telephony using the SIP protocol (Session Initiation Protocol). After a functional analysis of the SIP protocol and based on the work of researchers of the University Italian (University of parma-Italy) (University of parma-Italy)to acquire adequate libraries for the development of our communication tool.

This article was developed in order to model the integration of computer systems, GeoGebra and MS-Excel, in the teaching-learning process of Analytical Geometry at the Higher Institute of Educational Sciences in Cabinda, in order to reduce the difficulties that appear as, Lack of mastery of the basic concepts of Analytical Geometry, little motivation of students, limited understanding of the concepts of vectors, equations of lines, their representations and graphical interpretations in the plane and space, conic sections, quadric surfaces, poor preparation in the use of software mathematici

Solar energy is the radiative energy that comes from the sun. Solar radiation is electromagnetic in nature and its spectrum cover the ultraviolet (UV) through the visible (VIS) to the infrared (IR) part of the electromagnetic spectrum. The data used in this study was a 12 years average solar radiation data between year 2009 and 2021.

Naphthalimide has been widely used in probe research because of its unique structure. Therefore, using naphthalimide as matrix, a compound P was obtained by the reaction of pyridine-2-formaldehyde with naphthalimide derivative. Among the tested metal ions, the addition of Hg2+ to the solution of P in ethanol quenched the fluorescence of P at 525 nm, and a linear relationship between fluorescent intensity tothe concentration of Hg2+ in the range of 2.0×10-6-1.6×10-5 M was observed.

Climate change impact had given rise to incessant flooding exacerbated by high tidal fluctuations, sea level rise and its accompanying negative impacts such as land degradation and seawater incursion into freshwater sources. Hence, the need to assess the hydrochemistry and anthropogenic pollutants in water, sediment and representative fish samples of Aiyetoro coastal waters.

Introduction: A pseudoarthrosis is established after a minimum of nine months after the trauma without progressive visible signs of consolidation for three months1.

Environment is an un avoidable part of human life. The are Vedas gives various references in the environmental protection, ecological balance, weather cycles, rainfall phenomena, hydrologic cycle, etc. The protection of the environment was understood to be closely related to the protection of the heavens and earth. Many of the Ṛgvedic hymns therefore vividly describe the Heaven and Earth together.

Introducción. La relación entre las lesiones de abfracción y el estrés laboral constituyen un importante padecimiento en la actualidad en el personal militar con bruxismo, que participa en operaciones de alto impacto. Métodos. 124 infantes demarinase sometieron a una autoevaluación para reconocer si tenían bruxismo, grado de abfracción, Estrés Percibido (PSS) y Bruxismo Autoinformado (CBA), estas variables se analizaron estadísticamente con el programa PSPP. Resultados: El 73% de la muestra refirió tener bruxismo. El 35.5% de la muestra refirió abfracción severa, 26.6% abfracción moderada.