Physical Sciences and Engineering

Comparative assessment of visual and passive acoustic detection of cetaceans in a 4-d seismic operation, agbami, South-South of Nigeria

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.

Conceptual model and didactic strategy for dificulties reduction by integration of computer systems on analitical geometry teaching at education higher institut of cabinda

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

Estimation of the optimal tilt angle for solar photovoltaic modules in ilaro town southwestern Nigeria

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.

Hg2+-fluorescent probe based on naphthalimide derivative

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.

Design of a voip multimedia communication platform and model optimization by engineering for local companies in lubumbashi

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.

Assessment of seawater flux and its impact on ayetoro coastal community of ondo state, Nigeria

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.

Evaluation of the treatment of non-union and / or pseudoarthrosis of long bones in the orthopedic service of cemenav in a period from january 2016 to january 2019

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

The environmental awareness in Ṛgvedic period

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.

Correlación entre las lesiones de abfracción y estrés laboral del personal militar con bruxismo, que participa en operaciones de alto impacto de la secretaría de marina

Introduction. The relationship between abfraction lesions and work stress is an important condition nowadays in military personnel with bruxism, who participate in high impact operations. Methods. 124 marines underwent a self-assessment to recognize if they had bruxism, degree of abfraction, Perceived Stress (PSS) and Self-Reported Bruxism (SRB). These variables were statistically analyzed with the PSPP program. Results: 73% of the sample reported having bruxism. 35.5% of the sample reported severe abfraction, 26.6% moderate abfraction.

Intervenciones del personal de enfermeria para el mantenimiento de la termorregulacion del recien nacido sano

Introduction: Temperature regulation is vital for the survival and stability of the newborn (RN), its care and control by the nursing staff allows control of the environment, transfer and nursing interventions, therefore, the Romeo-November code has been created in the Mexican Navy. General objective: Identify nursing interventions in the Healthy RN during the Romeo - November code, in maintaining thermoregulation and identifying risk factors that favor the appearance of complications.