OALib Journal
  OALib Journal is an all-in-one open access journal (ISSN Print: 2333-9705, ISSN Online: 2333-9721). It accepts a manuscript for the peer-review processing, typesetting, publication and then allocated to one of the 322 subject areas. The article processing charge for publishing in OALib journal is Only $99. For more details, please contact service@oalib.com. Submit now
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Sep 05, 2019Open    AccessArticle

Agro-Industrial Groundwater Quality Abuja FCT, Nigeria: An Evaluation for Urban and Peri-Urban (UPA) Agricultural Irrigation

Richard Ayuk II Akoachere, Omogbemi Omoloju Yaya, Areakpoh Thomson Eyong, Marcelle-Carole Pami Ngassam, Ernest Lytia Molua, Raymond Ndip Nkongho, Elizabeth Orock Ayuk, Tom Tabi Oben
From the declaration made by the African Mayors in Senegal; the Mayors and Municipal Health Officers of the Americas in Columbia; the City Executives of Cities and Local Governments of the World in Spain and in the context of the Millennium Development Goals MDG 1&7; there is a need for increased food production in urban and peri-urban areas UPA in the world. Sub-Saharan Africa faces more development challenges than any other
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Jul 30, 2019Open    AccessArticle

Geomagnetic Mapping of the Macaé Region, Brazil

Igor Rodrigues Salvador de Menezes, Júllia Medeiros Figueiredo, Davi Antonio Ferreira Velloso, Maria Eduarda da Silva Bento, Iuri de Azevedo Lima, Hans Schmidt Santos
This work presents the geomagnetic characterization of the municipality of Macaé, Brazil. Data from IGRF12 (twelfth edition of International Geomag-netic Reference Field) were used. Through the data collected in a regular grid of 0.1 degrees of the components, north, east and vertical were generated maps of components, inclination, declination, horizontal component and geomagnetic total field. The results showed important relative
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Apr 30, 2019Open    AccessArticle

Trace Metals in Groundwater of the South Eastern Piedmont Region of Mount Cameroon: Quantification and Health Risk Assessment

Richard Ayuk Akoachere, Edwin Ngwene Etone, Roy Lyonga Mbua, Marcelle Pami Ngassam, Simon Ngomba Longonje, Pius Mbu Oben, Regina Wotany Engome
The South Eastern Piedmont Region of Mount Cameroon is getting in-creasingly populated. Groundwater is the main resource for drinking in this area; hence, the quantification of trace metals, suitability and quality of the groundwater resources for drinking, domestic and agro-industrial uses is of public and scientific concern. In this study, 10 samples were collected from 10 sites in September 2017. Field measurement of physicoche
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Apr 29, 2019Open    AccessArticle

Magnetometric Characterization of the Rio do Peixe Basin, Brazil

Kaio da Silva Pimentel Figueiredo, Gabriel Machado Stutz Xavier, Dayane de Souza Pereira, Jennifer Santos Rosa, Tainá de Mello Ribeiro, Hans Schmidt Santos, Felipe Barbosa Venancio de Freitas, Rogério Manhaes Soares, Rayssa Barcellos Paiva
This work presents the analysis of magnetometric data of an aerial survey conducted in the Rio do Peixe Sedimentary Basin, which is a promising oil producing region in the state of Paraíba, Brazil. The collected aeromagne-tometric data allowed the preparation of maps regarding magnetic anomaly, horizontal and vertical derivatives, analytical signal and Euler Decon-volution that were compared w
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Feb 28, 2019Open    AccessArticle

Functional Relationships of a Geospatial System for Reforestation of a Territory Using Geographic Information Systems

Orlando H. álvarez Hernández, Thuesman E. Montano Peralta
The analysis presented was carried out in an area of Loja Province, Ecuador, with the objective of determining the functioning of the different geospatial systems for the evaluation of the reforestation of the territory, degraded by different activities that are developed in open sky. It was departed from the running of the model of Hottel, that considering the absence of data series of meteorological variables, t
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Jun 27, 2017Open    AccessArticle

Statistics of the Earth’s Topography

Christian Vérard
The so-called “typical” values for the Earth’s topography are often used in the literature, such as the mean continental altitude (MCA), the Moho depth for “normal” continental crust, or “typical” depth of mid-oceanic ridges. However, the statistical relevance of those values is hardly discussed. Focussed on data for the global topography, this paper presents statistical analyses regarding various environments. It is shown in part
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Apr 28, 2017Open    AccessArticle

An Application of GIS in the Consolidation Grouting of Rock Masses through Grouting Intensity Number (GIN)

Faisal Usman, Noorzada Afridi, Muhammad Safiullah, Tufail Ahmad, Shahbaz Rafiq
The grouting of foundation rock is a critical constructional technique for most of the mega projects across the world. Grouting operations come up with the challenges of pre-planning, visualization, presentation of data, quantity control, cost effectiveness and budget management. Unless properly managed, the above factors can contribute to project complexity and cost overruns. This paper deals with the applic
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Mar 28, 2017Open    AccessArticle

The Precursor of Tectonic Earthquake in Telluric Current

Igor Petrovich Dobrovolsky
The calculation of the precursor of the tectonic earthquake in the telluric current is carried out on the basis of the main equations of the telluric current and the theory of preparation of the tectonic earthquake. Results do not contradict data of field observations. Methodical significance of work is especially important.


Oct 10, 2016Open    AccessArticle

Classification and Evaluation of Porous Bioclastic Limestone Reservoir Based on Fractal Theory

Xiaowei Sun
The conventional method of classifying and evaluating reservoir based on structural features of microscopic pore has limitation. In order to realize quantitative classification and evaluation of complicated reservoir by fractal theory, the paper used mercury penetration materials to calculate fractal dimension of reservoir’s pore structure, and gathered statistics to analyze the relation between fractal dimension and microscopic p
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Nov 09, 2015Open    AccessArticle

The Estimation of the Error at Richardson’s Extrapolation and the Numerical Solution of Integral Equations of the Second Kind

Igor Petrovich Dobrovolsky
The mode of definition of the error at polynomial Richardson’s extrapolation is described. Along with the table of extrapolations the new magnitudes reflecting expediency and efficiency of extrapolation are entered. On concrete examples it is shown that application of Richardson’s extrapolation to a solution of integral equations has appeared rather effective and gives a solution with a high exactitude. Application of formulas of interpolation leads to a solution in the analytical aspect.


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