scholarly journals The Impact of Biosolids on the Geotechnical Properties of Some Soils of the Niger Delta Sub-region, Nigeria

2020 ◽  
Vol 4 (1) ◽  
pp. 1
Author(s):  
So-ngo Clifford Teme ◽  
Vincent Onuoha
2021 ◽  
Vol 11 (14) ◽  
pp. 6451
Author(s):  
Christian E. Hernández-Mendoza ◽  
Pamela García Ramírez ◽  
Omar Chávez Alegría

Soil contamination by different hydrocarbons has rapidly expanded worldwide, surpassing the self-purification capacity of soils and increasing the number of contaminated sites. Although much effort has been devoted to study the effects of diesel contamination on the geotechnical properties of soil, there is still limited available information about it. Moreover, there is no available information about the maximum diesel retention that soil can have and its effect on the geotechnical behavior of the soil. Thus, in this paper, we determined the maximum diesel retention by an unsaturated clayey soil and evaluated the impact of diesel contamination on its geotechnical properties. The results showed that the soil could only retain 12.6% of the added diesel and the excess was expulsed. At such a diesel concentration, the saturation rate of the soil was lower than 80%. Diesel contamination increased the plasticity and the internal friction angle of the soil, while its cohesion was considerably decreased. It should be noted that the matric suction of contaminated soil was lower than the one obtained for natural soil. However, its osmotic suction was considerably higher. This indicates that osmotic suction must be considered to evaluate the shear strength of contaminated soils.


2016 ◽  
Vol 19 (03) ◽  
pp. 391-402
Author(s):  
Sunday Amoyedo ◽  
Emmanuel Ekut ◽  
Rasaki Salami ◽  
Liliana Goncalves-Ferreira ◽  
Pascal Desegaulx

Summary This paper presents case studies focused on the interpretation and integration of seismic reservoir monitoring from several fields in conventional offshore and deepwater Niger Delta. The fields are characterized by different geological settings and development-maturity stages. We show different applications varying from qualitative to quantitative use of time-lapse (4D) seismic information. In the first case study, which is in shallow water, the field has specific reservoir-development challenges, simple geology, and is in phased development. On this field, 4D seismic, which was acquired several years ago, is characterized by poor seismic repeatability. Nevertheless, we show that because of improvements from seismic reprocessing, 4D seismic makes qualitative contributions to the ongoing field development. In the second case study, the field is characterized by complex geological settings. The 4D seismic is affected by overburden with strong lateral variations in velocity and steeply dipping structure (up to 40°). Prestack-depth-imaging (PSDM) 4D seismic is used in a more-qualitative manner to monitor gas injection, validate the geologic/reservoir models, optimize infill injector placement, and consequently, enhance field-development economics. The third case study presents a deep offshore field characterized by a complex depositional system for some reservoirs. In this example, good 4D-seismic repeatability (sum of source- and receiver-placement differences between surveys, dS+dR) is achieved, leading to an increased quantitative use of 4D monitoring for the assessment of sand/sand communication, mapping of oil/water (OWC) front, pressure evolution, and dynamic calibration of petro-elastic model (PEM), and also as a seismic-based production-logging tool. In addition, 4D seismic is used to update seismic interpretation, provide a better understanding of internal architecture of the reservoirs units, and, thereby, yield a more-robust reservoir model. The 4D seismic in this field is a key tool for field-development optimization and reservoir management. The last case study illustrates the need for seismic-feasibility studies to detect 4D responses related to production. In addition to assessing the impact of the field environment on the 4D- seismic signal, these studies also help in choosing the optimum seismic-survey type, design, and acquisition parameters. These studies would possibly lead to the adoption of new technologies such as broad-band streamer or nodes acquisition in the near future.


2018 ◽  
Vol 31 (3-4) ◽  
pp. 310-340
Author(s):  
Nimi Wariboko

Abstract How does religion or worldview affect business practices and ethics? This tradition of inquiry goes back, at least, to Max Weber who, in the Protestant Ethic and the Spirit of Capitalism, explored the impact of theological suppositions on capitalist economic development. But the connection can also go the other way. So the focus of inquiry can become: How does business ethics or practices affect ethics in a given nation or corporation? This paper inquires into how the political and economic conditions created and sustained by nineteenth-century trading community in the Niger Delta influenced religious practices or ethics of Christian missionaries. This approach to mission study is necessary not only because we want to further understand the work of Christian missions and also to tease out the effect of business ethics on religious ethics, but also because Christian missionaries came to the Niger Delta in the nineteenth century behind foreign merchants.


2019 ◽  
Vol 9 (2) ◽  
pp. 5-9
Author(s):  
Posigha Bassil Ebiwolate ◽  
Ojohwoh Rose

This study investigates the perception and use of social networking sites among undergraduate students in Niger Delta University, Wilberforce Island, Bayelsa State, Nigeria. The main purpose of the study is ascertained the popularly used SNS, the purpose of using the SNSs, the perception of students towards SNSs and identity the impact of the use of SNSs by the undergraduate students. The study adopted descriptive research. The population of the study is 300 registered undergraduate students of Niger Delta University Library. Questionnaire was used to collected data. The result shows that Facebook, Google and WhatsApp are the popularly used social networking sites. Social relation, academic learning activities, sharing of information, etc. are the purpose of using social networking sites. The findings also revealed positive perception towards the use of social networking sites and, positive impact of using social networking sites. Arising from the findings some recommendations were made.


2016 ◽  
pp. 1424-1437
Author(s):  
Nwachukwu Prince Ololube ◽  
Nanighe Baldwin Major ◽  
Peter James Kpolovie

In this chapter we highlighted the impact of the current economic and political dispensation in Nigeria and its impact on teacher education programs and the means of enhancing teacher education in the Niger Delta region. This paper is a conceptual and methodological breakthrough in Nigeria's academic landscape where qualitative and quantitative experiences highlight issues that are pertinent to teacher education program in the Niger Delta. The chapter proposed that the Niger Delta region's and the entire Nigeria's teacher education programs would be advanced if the component parts of the current economic and political disposition are resolved. This chapter contends that the Niger Delta region has the potential to address the challenges currently faced in the region such as social disruption (violence threat), poverty, hunger, disease, conflict, marginalization, and the achievement and improvement for effective teacher education programs. This chapter is of the immense judgment that successfully addressing the challenges currently faced in the Niger Delta region, teacher education programs will greatly improve qualitatively and quantitatively.


2020 ◽  
Author(s):  
Okiemute Amuboh ◽  
Suleiman Ahmed ◽  
Dolapo Enya ◽  
Gbolade Ibikunle ◽  
Imonite Imorame ◽  
...  

2015 ◽  
Vol 6 (2) ◽  
pp. 63
Author(s):  
Ngodigha, Sabina Alatari ◽  
J. F. N Abowei

<p>The study was conducted between September 2013 to April 2015 to determine Artisanal Fishers attitude towards conservation measures in Ekperiama formally known as Ekperikiri in the Niger Delta. With the aid of well-structured questionnaires the desired information were collected and analyzed. Total sample sizes of 260 respondents within the study area were interviewed<strong>. </strong>Structured questionnaire was divided into four sections to include: socio-psychological characteristics, business information, environmental issues, conservation/ management knowledge. Likert scale was used when applicable. Factor analysis was conducted with the items to determine if underlying construct existed in the sub-scale. Cronbach’s alpha coefficient was used to measure reliability of data and correlation was applied to measure linear relationship between variables.<strong> </strong>Binary logistic regression technique was used to determine the impact of the independent variables on willingness to adopt fisheries conservation measures<strong>. </strong>From the analysis, socio-psychological, environmental and institutional barriers are the primary factors influencing fisher’s participation in fisheries conservation programmes in Ekperiama, Ogbia creek. These factors include: fishing experience, awareness, fishers relationship with community, cooperation amongst fishers, relationship with other communities and fishers positive attitude towards preserving nature.<strong></strong></p>


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