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Anorectal melanoma: experience from a tertiary cancer care centre in South India
A Sajeed,CK Nair,I Ahamed,K Cherian,M Muralee,P Augustine,PM Arun,S Ranjith
- , 2018, DOI: 10.1308/rcsann.2017.0184
Abstract: Mucosal malignant melanoma of the anorectum is a rare and aggressive disease, in which early diagnosis is difficult. The prognosis remains extremely poor, irrespective of the treatment. We share our experience in treating this malignancy at our centre in South India
Removal of Steriod Hormones by Activated Carbon Adsorption—Kinetic and Thermodynamic Studies  [PDF]
Augustine O. Ifelebuegu
Journal of Environmental Protection (JEP) , 2012, DOI: 10.4236/jep.2012.36057
Abstract: The mechanism, isotherms and kinetics of removal of two endocrine disrupting chemicals, 17β-estradiol (E2) and 17α-ethinyloestradiol (EE2) by activated carbon adsorption were investigated in an agitated non-flow batch adsorption studies. Mathematical models were used to describe the adsorption phenomenon with the kinetic and thermodynamic parameters evaluated using the adsorption equilibrium data at varying temperatures. Higher adsorption rates were achieved at acidic to neutral pH ranges, with the sorption kinetic data showing a good fit to the pseudo second order rate equation and the Langmuir adsorption isotherm model for both E2 and EE2. The Gibbs free energy were –16.68 kJ/mol and –17.34 kJ/mol for E2 and EE2 respectively. The values of enthalpy for both E2 (84.50 kJ/mol) and EE2 (90 kJ/mol) indicated a chemical nature of the sorption process. Both the isotherm and thermodynamic data obtained all supported the mechanism of adsorption of E2 and EE2 to be mainly chemisorptions supported by some physical attractions.
A Chi-Square Approximation for the F Distribution  [PDF]
L. Jiang, Augustine Wong
Open Journal of Statistics (OJS) , 2018, DOI: 10.4236/ojs.2018.81010
Abstract: F distribution is one of the most frequently used distributions in statistics. For example, it is used for testing: equality of variances of two independent normal distributions, equality of means in the one-way ANOVA setting, overall significance of a normal linear regression model, and so on. In this paper, a simple chi-square approximation for the cumulative distribution of the F-distribution is obtained via an adjusted log-likelihood ratio statistic. This new approximation exhibits remarkable accuracy even when the degrees of freedom of the F distribution are small.
Impact of Different Light Characteristics on the Growth and Lipid Content of Diatom Phaeodactylum tricornutum Transconjugant Strains  [PDF]
Nikunj Sharma, Elisa Ines Fantino, Fatima Awwad, Natacha Mérindol, Arun Augustine, Fatma Meddeb, Isabel Desgagné-Penix
American Journal of Plant Sciences (AJPS) , 2023, DOI: 10.4236/ajps.2023.141004
Abstract: Light regulates important metabolic processes in microalgal cells, which can further impact the metabolism and the accumulation of biomolecules such as lipids, carbohydrates, and proteins. Different characteristics of light have been studied on various strains of the model diatom Phaeodactylum tricornutum, but not on transconjugant cells and information on wild-type strains is still limited. Therefore, we studied the impact of different light characteristics such as spectral quality, light intensity and light shift on the growth, and the composition in lipids and fatty acids of P. tricornutum cells to provide a comprehensive context for future applications. Initially, we tested the impact of spectral quality and light intensity on P. tricornutum transformed with an episomal vector (Ptev), harboring the resistance gene Sh ble. Results indicated that Ptev cells accumulated more biomass and overall lipids in spectral quality Red 1 (R1: 34% > 600 nm > 66%) more effectively as compared to Red 2 (R2: 8% > 600 nm > 92%). It was also detected that cell granularity was higher in R1 as compared to R2. Furthermore, by testing two light intensities 65 μmol·m-2·s-1 and 145 μmol·m-2·s-1 light, it was observed that 145 μmol·m-2·s-1 led to an increase in growth trend, total biomass and lipid content. Combining spectral qualities and light intensities, we show that the lipid accumulation raised by 2.8-fold. Studying the light intensity and spectral quality allowed us to optimize the light conditions to R1 spectral quality and light intensity 145 μmol·m-2·s-1. These initial results showed that red light R1 at 145 μmol·m-2·s-1 was the best condition for biomass and total lipids accumulation in Ptev cells. Next, we further combined these two-light optimizations with a third light characteristics, i.e. light shift, where the cultures were shifted during the early stationary phase to a different light environment. We studied Red light shift (Rs) to investigate how light condition variations impacted P. tricornutum transconjugants Ptev and with an episomal vector containing the reporter gene YFP (PtYFP). We observed that Rs induced growth and fatty acid eicosapentaenoic acid (EPA) in Ptev as compared to PtYFP. Altogether, the study shows that red light
Alternative Binders for Increased Sustainable Construction in Ghana—A Guide for Building Professionals  [PDF]
Mark Bediako, Augustine Osei Frimpong
Materials Sciences and Applications (MSA) , 2013, DOI: 10.4236/msa.2013.412A004
Abstract:

Sustainable concepts and practices have taken a centre-stage in different fields of studies and professions. This is because human activities continue to threaten the carrying capacity of earth resources as well as life basic needs such as shelter. Ghana, a developing nation, has been characterized with a boom in construction activities. In almost every constructional work, Portland cement remains the main binding agent that is used to bind aggregates together in a monolithic unit. The overdependence of the Ghanaian construction industry on Portland cement has contributed to huge sums of foreign exchange used to import cement ingredients, high cost of buildings and annual artificial shortages of cement which leads to high cost of the product. In this work, alternative binding agent—pozzolana cement, is reported with regards to the theory behind its utilization, laboratory results and practical applications. Results obtained from both the laboratory and the field works have shown that the future binder for the Ghanaian construction industry is pozzolana cement. CSIR-Building and Road Research Institute recommends it for the construction industry for use in various forms of construction such as block making, concrete and mortar works.

Irrigation Suitability Assessment of Effluents From West Kano Rice Irrigation Scheme, Kisumu, Kenya
AO Augustine
Ethiopian Journal of Environmental Studies and Management , 2009,
Abstract: This paper assesses the suitability of West Kano Rice Irrigation Scheme effluents for recycling. Water and wastewater quality variables of ten samples from two sites were determined. The variables were Temperature, Electrolytic conductivity, Total suspended solids, pH, Calcium, Nitrates, Potassium, Sodium and Total Dissolved Solids (TDS). The results were used to compute the Sodium adsorption ratio (SAR), and further compared with FAO irrigation water standards. The wastewater recorded statistically significant gain in Calcium, Nitrates, and TDS, depicting a heavy loss of these vital soil constituents to Lake Victoria. Nitrate levels indicated a deficit in lake water, and an excess in effluents. The excess nitrates in effluents pollute the lake, but could help as crop nutrients when recycled, while low nitrate levels in the lake water would require an addition of fertilizers to the irrigated soils. Annually, a total of 12.26 million m3 of water and 8.94 million m3 of effluents is pumped into and out of the scheme respectively. The effluent and Lake water has SAR of 35% and 18% respectively, rendering both of poor irrigation quality, though the effluents have a compensatory advantage due to its higher levels of Calcium (0.91me/l), compared with the Lake water’s 0.48me/l. The wastewater, with an irrigation suitability rating of 45%, was found more suitable for irrigation than the Lake water’s 40%. It was concluded that the irrigation wastewater was more suitable for use in the scheme than the Lake Victoria waters. It was recommended that the recycling of the irrigation wastewater should be adopted. Key Words: Irrigation; Recycling; Pollution; Waste; Water Quality; Wastewater.
Safe surgical approach to deep pontomedullary cavernoma: An iMRI-assisted resection
Adeolu Augustine
Neurology India , 2005,
Abstract:
Impact of air pollution on the environment in Port Harcourt, Nigeria
Augustine C.
Journal of Environmental Science and Water Resources , 2012,
Abstract: The enforcement of air quality standards for populated urban areas has led to increasing attention to assessment of air quality management areas, where violation of air quality standards occurs, and development of control strategies to eliminate such violation of air quality standards. The Port Harcourt (Lat 4.78oN, Long 7.01oE and Elevation 468m) urban area is very densely built and has heavy motorized traffic. The increase of emissions mainly from traffic and industry are responsible for the increase in atmospheric pollution levels during the last years. The following air pollutants: carbon monoxide, sulphur dioxide, nitrogen dioxide, hydrogen sulphide and ozone, were measured with the WolfSense Multiple Gas Analyzer. The observed levels of CO, a criteria pollutant, exceeded the set limits of 10 and 11.4 μg/m3 by Department of Petroleum Resources (DPR) and Federal Ministry of environment (FMEnvr), respectively while SO2 exceeded the set limits of 0.1 μg/m3 by DPR. The highest levels of CO and SO2 emissions was observed at mile-1 market road.
Humanism and realism in International Humanitarian Law
Augustine Brannigan
The Canadian Journal of Sociology , 2009,
Abstract:
Public-private partnership and the right to property in Nigeria
Arimoro, Augustine
- , 2019, DOI: 10.17159/1996-2096/2019/v19n2a10
Abstract:
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