Remediation of soil contaminated with polycyclic aromatic hydrocarbons from crude oil

The aim of this study was to determine ways of remediating soils contaminated with polycyclic aromatic hydrocarbons (PAHs) associated with crude oil. The study involves the use of planted cowpeas, mushrooms, algae, dead vegetable and live earthworm, and fire-heating of the contaminated garden soil collected from the Niger Delta area of Nigeria. The types and levels of the PAH in the soil before and after three weeks of contamination were determined using gas chromatography. Mushrooms and cowpeas proved to be very adequate phytoremediators. Fire heat was third, algae and dead vegetable with live earthworm showed the least reduction. This study thus recommends that the people of the Niger Delta should engage in planting of mushrooms and cowpeas to regenerate and ameliorate petroleum contaminated land for beneficial farming.Key words: Crude oil, petroleum, contaminated soil, polycyclic aromatic hydrocarbons, mushrooms, cowpeas

Effect of environmental factors on coastal fisheries

Factors which threaten sustainable commercial fisheries are considered in this paper. Oil and grease, suspended solids, overfishing impact on fishes and fisheries. Whereas overfishing declines adult fish values; the duo of oil and suspended solids clog and disable gills of affected fishes and deplete insolation. And barnacles foul boats

Global best practices in combined transports and its applicability to South Ostrobothnia

This thesis aims to lay out some of the global best practices that can be used for the combined transportation design of Southern Ostrobothnia truck to rail project. The goal is to identify customers' demands and requirements for integrated transportation, as well as the technology that is now making this system efficient in terms of cost, operational efficiency, and environmentally friendly implementations. Other studies have shown that multimodal transportation is on the rise, though its full potential has yet to be achieved. This thesis looked at the following questions: 1. What are the major challenges in the implementation of combined transport? 2. What is the future for heavy goods vehicles? The thesis concludes by outlining the economic evaluations and benefits of having a combined transportation system and the new possibilities for logistics companies within the region

The development of atherosclerosis in a patient with diabetes mellitus

Scientific supervisors: Zhuravka N. V., assistant; Shop I. V., PhD, associate professorАктуальні питання сучасної медицини: Тези доповідей XVІ Міжнародної наукової конференції студентів, молодих вчених та фахівців 28-29 березня 2019 р. – Х.: ХНУ імені В. Н. Каразіна, 2019. – C. 336-337

Construction of a Wireless Smart Home System based on Voice Recognition

In this paper a design and construction of a wireless smart home system on voice recognition has been presented. The proposed system consists of a voice recognition module, Arduino Uno microcontroller, relay circuit and radio frequency transmitter and receiver. The voice recognition module needs to be trained first before it can be used to recognize commands. Upon successful recognition of voice command, the Arduino drives the corresponding load with the help of the relay circuit. Keyword: Wireless, smart home system, voice recognition DOI: 10.7176/ISDE/10-1-0

Effects of supplemental vitamin C (Ascorbic Acid) on the growth and health of African catfish Clarias gariepinus

Four different diets each containing 37.4% crude protein were formulated from locally available feed materials to contain 0 (control), 23, 46 and 92 mg/Kg supplemental Ascorbic acid (AA) respectively. Catfish with average weight of 2 - 6g were stocked and fed twice daily to satiation initially with Coppens fish feed for the first 9 weeks, sorted by weight equality into four ponds at different times; and further fed with the experimental diet till the 26th week. Growth performance was tested using data from length and weight measurements of the fish. Weight gain was generally significantly (P<0.02) higher in groups fed 92 mg/Kg AA and 46 mg/Kg AA than those fed with 0 mg/Kg Ascorbic acid and 23 mg/Kg AA, but those fed 0 mg/Kg AA showed higher mean weight gain (527.86g) than those fed 23mg/kg AA (257.74g). Protein efficiency ratio was higher in the group fed 0mg/kg AA than the other groups. Liver AA was significantly higher (P<0.05) in groups fed 92 mg/kg AA. The group which received 0 mg/Kg AA and 23 mg/Kg AA in their diets manifested deficiency signs such as nodules on neck, skin lesions, head lesions and very visible sutures, but those fed 46 mg/Kg AA and 92 mg/Kg AA had a healthy body appearance. Evidence from this study shows that growth or weight gain of catfish is not solely dependent on supplemental vitamin C availability; but low amounts or absence of supplemental vitamin C bring about poor health.Keywords: Clarias gariepinus, Ascorbic acid, diets, Healt

DOES CORRUPTION HAVE IMPACT ON FDI AND POVERTY? EVIDENCE FROM SELECTED SUB-SAHARAN AFRICAN COUNTRIES

The study on the effects of corruption has attracted attention of many scholars in the world today. This study focus on corruption and its impacts on FDI inflow and poverty. It is argued that corruption does not only reduce FDI inflows in a country, but also cause poverty in the host country by negatively affecting and weakening social, economic and political institutions at different levels. Using data from World Bank group, 2016, the result of the cross-sectional setting showed that corruption negatively affect FDI inflow and it is significant. The investigation was started by using a cross-sectional data analysis on 34 countries for 11 years to confirm the former findings of authors. Therefore, a benchmark FDI theoretical model and equation in the methodology was constructed to test corruption and its effects on attraction of FDI. While, the link between corruption and poverty was confirmed and validated by the previous studies. Hence corruption must not only be controlled for political reasons but also for economic growth and prosperity for those host countries. Keywords: FDI inflow, Poverty, Corruption, OLS, Sub-Saharan African countries

Sedimentological and Geochemical Appraisal of Stream Sediments of Part of Igangan Sheet 240 South Western Nigeria

An integrated sedimentological and geochemical evaluation was carried out on the sediments sampled from part of Igangan sheet 240 (1:100,000) SW Nigeria, covering Lanlate and its environs. This study is to characterize the provenance and depositional processes prevalent in the area. Twenty-nine stream sediment samples were collected after the confluence points of two or more rivers at a depth of 20-25cm, along with rock samples for further analyses in the laboratory. The techniques involved using standard sedimentological methods involving field descriptions, textural parameters, and petrographic analysis methods. The geochemical studies involved the determination of major elemental composition using Heavy Mineral analyses. Granulometric analysis was carried out on twenty-nine (29) stream sediments samples, while five (5) representative samples were systematically picked and analyzed for their mineralogical maturity using ZTR index. The rock samples were cut into thin section and analysed under the microscope for mineral composition. The results of the geochemical analysis were thereafter subjected to multivariate statistical analysis. The statistical plot shows that the sands are poorly sorted, medium to coarse grained and sub rounded to sub angular in shape. The sands which are medium to coarse grained suggests that the sands were deposited under a moderately energy condition. The field investigations and petrographic studies show that most of the study area has undergone an episode of metamorphism. Migmatite gneiss (80%), Biotite Hornblede Gneiss, quartzite (5%), muscovite hornblende biotite granite (10%) and biotite hornblende granite (5%) are the major rock in the area, while biotite, feldspar, quartz, hornblende and accessory minerals were observed in hand and thin sections. The calculated ZTR index for the sandstones ranges from 51.3% to 57.9 %, with an average of 54.6 %. This suggests that the sandstones of the formation are mineralogical mature. The conclusion drawn from the integration of the geochemical and multivariate analyses revealed that the study area is mineralized and the sediments were deposited under a moderate energy condition. Keywords: Igangan, Nigeria, Sedimentological, Stream sediments, Geochemical, Statistic

Determination of intestine length to standard length ratio of some fishes from Ikpoba River and Ovia River, Nigeria with a review of culture of Parachanna obscura (Pisces:Channidae)

The gut length to standard length ratios of twelve fish species from the Ovia and Ikpoba Rivers were calculated to work out their feeding level in the food chain. The mean ratio of five species Brycinus macrolepidotus Smith, 0.9 Parachanna obscura (Gunther), 1.0, Papyrocranus afer. Gunthel; 0.35, and Xenomystus nigri Gunther 0.75, classify them as carnivores. Four species Synodontis eupterus Boulenger; 4.4 S.schall (Bloch and Schneider) 4.8, Tilapia mariae Boulenger, 3.5, and T. tilli (Gervais), 4.7, are herbivores. Three intermediate ratio species B. longipinnis (Gunther), 1.3,Chrysichthys furcatus (Gunther) 1.6, and Clenopoma kingsleyae Gunther, 1.8, are omnivores. The body depth of seven of the species was measured and expressed as percentage of the standard length to ascertain the accommodative capacity of the fish for the gut. In addition a review of culture of snake head fish Parachanna obscura is presented