Environmental & Physical Sciences

Environmental & Physical Sciences Research Papers/Topics

19th Century Conflagrations and the Architectural Landscape of Lagos

Abstract: The 19th century was a boisterous time for Lagos. Quite momentous were the events that they left a significant change on many aspects of Lagos’ urban character and outlook. This paper looks at city fires and how they shaped the architectural landscape of Lagos. While city fires are in some ways a standard occurrence in many sprawling 19th century metropolises, not many received nearly as many fire as Lagos did. Though some of the fire events were acts of incendiarism, a significa...

Assessment Of Farmers’ Perception Of Soil Quality Within The Ada West District Of The Greater Accra Region Of Ghana

ABSTRACT Globally, incorporating farmers’ perception on soil quality indicators and its associated influence on soil management practices into policy decisions has become a topical issue in recent times. This study assesses the perception of farmers on soil quality within the Ada District of the Greater Accra Region of Ghana. Using a mixed method approach, 212 questionnaires were administered to farmers in five communities of the Ada West District. Thirty six soil samples were taken from fo...

Some Insecticide Studies On The Rice Stem Borer

ABSTRACT Insecticide bio as 3 ays were carried out on JD. thoracica (a) adults by topical application of 1 pi drop of toxicant on their nota; and Ob) eggs by dipping them into insecticidal solutions for 30 min. LC50 values obtained from the tests on the adults were: Gamma BHC, 26.4Ctog/l; Pirimiphos methyl (PP511) 28.00 mg/l; Serin, 67.00 mg/l and Malathion, 580.00 mg/l. Values obtained from the eggs tests were: PP511, 1.30 mg/l; Sevin, 5.30 mg/l; gamma BHC, 18.30 mg/l andMalathion, 83.00 mg/...

An Assessment Of Heavy Metal Contamination In Soils And Vegetation – A Case Study Of Korle Lagoon Reclamation Site

ABSTRACT  This study investigated the concentration of heavy metals and vegetation around the Korle  Lagoon Reclamation site in Accra (Ghana). The dispersion of heavy metals such as Pb,  Hg, Cd, As, Zn, Sn, Ni, Cu and Cr within the soil profile from a depth of 0 – 60cm (at  20cm intervals) were assessed. A total of ninety (90) soil samples were taken from the ewaste zone (EW), central gardens zone (GZ), recreational zone (KD), reclaimed zone (RZ)  and estuary zone (ES) and eighteen (18...

Environmental Assessment Of The Kassena-Nankana Irrigation Scheme Vis A Vis Microbial Contamination Of Tomatoes Produced From Irrigated Farms In The Kassena-Nankana East Municipality

ABSTRACT This aim of the study was to conduct an environmental assessment of three irrigation systems in the Kassena-Nankanna East Municipality and determine microbiological quality of tomato crops grown on farms irrigated from study schemes and water used for irrigation. A structured questionnaire and direct observation was used to gather background information from a total of 120 farmers from the study area in order to identify environmental conditions that may be contributing to the contam...

Numerical Modelling Of Suspended Radioactive Sediment Transport In A Stream Using Matlab

ABSTRACT The use of materials that contain radioactive substances has gained grounds in Ghana due to numerous benefits derived from them. These radioactive materials can be found in the areas of medicine, agriculture and industries such as mining. Though there are strict measures to ensure such material do not find its way into the environment, improper management of the waste poses a threat to the environment. To be able to understand the impact the radioactive material has on the environmen...

Evaluation Of Cocoa Types For Resistance To Capsids

ABSTRACT Ten clones and 10 hybrids each of four cocoa populations; Nanays (Na), IMCs, Trinidad introduction (Ts) and Parinaris (Pa), were screened for attractiveness and resistance/tolerance to the capsid, Sahlbergella singularis (Hagl.). Two screening methods; a laboratory ‘microtest’ and an insectary test were used to determine the attractiveness of the genotypes to capsids. In addition, seedlings exposed to capsids in the insectary were observed under ‘ semi-field’ conditions to as...

Assessment Of Groundwater Quality Around Abandoned Quarry Ponds Near Lower Benue Trough, Nigeria

ABSTRACT A field study was conducted on the Assessment of Ground Water Quality around Abandoned Quarry Ponds near Lower Benue Trough, Nigeria. Water samples were collected using 1liter amber glass bottles each fitted with a screw cap and lined with foil from the four abandoned quarry pits measured fifty meters (50m) (165ft) deep. These were labeled ABP1, ABP2, ABP3, ABP4, while the wells were labeled HDW (hand dug wells) measured eighty meters (80m) (264ft) deep and BH (borehole), measured t...

The Dynamics Of Mycobacterium Ulcerans Transmission By Naucorid Species (Hemiptera: Naucoridae) In Parts Of Greater Accra Region Of Ghana.

ABSTRACT Mycobacterium ulcerans disease (Buruli ulcer) is increasing worldwide but there is currently no effective chemotherapeutic treatment. Prevention and control has also not been possible because the mode of transmission remains illusive and at best speculative. Recent investigation however points to the possible involvement of aquatic bugs belonging to the familily Naucoridae in the transmission process. In the laboratory, infected Naucorid species have been shown to transmit the bacter...

Dna Barcoding As A Tool For Sustainable Harvesting Of Medicinal Plants Used In The Treatment Of Diarrhoea And Male Sexual Weakness In Ghana.

ABSTRACT Due to high poverty levels coupled with high patients to doctor ratio in Ghana, most people especially the urban poor and rural dwellers resort to herbal medicines which are quite cheap for their primary healthcare. Developing measures to maximize the medicinal potentials of indigenous plants will reduce the number of lives lost through diseases. A major setback is that most herbal products sold in public places lack scientific evidence for safety, quality and efficacy. As the safety...

Digenous Plants Against Three Stored Product Beetles

ABSTRACT Toxicity and protectant potential of isoeugenol, limonene and essential oil of Hyptis spicigera against Sitophilus zeamais (Motsch.), Callosobruchus maculatus F. and Tribolium castaneum (Herbst.) and the effect of the oils on germination of maize and cowpea were investigated in the laboratory using contact toxicity, grain treatment and repellency assays. The effects of acetone extracts from leaf and seed of Hyptis spicigera on oviposition and adult emergence of C. maculatus were also...

Characterization Of Atmospheric Particulate Matter At E-Waste Landfill Site In Agbogbloshie, Accra

Abstract A year-long investigation has been carried out on atmospheric particulate matter (APM). Elemental composition,mass concentration, sources contributions and their fingerprints were determined in APM samples collected, in Agbogbloshie scrap market, between May 2010 and April 2011. PM2.5 and PM102.5 size fractions of APM were collected 24-hourly on 47 mm diameter nuclepore filters of pore sizes 0.4 µm and 8 µm respectively, using the Gent sampler. Gravimetric analyses were carried out...

Climate Change Awareness And Risk Perception In Ghana: A Case Study Of Communities Around The Munipomadze Ramsar Site

ABSTRACT This study investigated the level of awareness and knowledge of climate change, factors influencing risk perception pertaining to climate change and variability, and factors influencing the adoption of adaptation strategies in three communities around the MuniPomadze Ramsar site. Primary data were collected through a questionnaire survey, FGDs and in-depth interviews. Descriptive statistics such as frequencies and percentages were employed to assess the level of knowledge and awarene...

AFRICAN REGIONAL POSTGRADUATE PROGRAMME IN INSECT SCIENCE (ARPPIS) IDENTIFICATION OF RESISTANCE CULTIVARS OF COWPEA [Vigna Unguiculata (L.) Walp] TO FLOWER THRIPS (Megalurothrips Sjostedti Tr

ABSTRACT Cowpea [Vigna ungriculata (L.) Walp] is a leguminous plant and is one of the staple crops much cultivated in Benin and neighboring countries and in Africa as a whole. Cowpea production is hindered by many biotic and abiotic factors, with the flower bud Thrips, Megalurothrips sjostedti (Trybom) being the most damaging pest at flowering stage causing yield losses of 20 to 80%. Control of flower bud thrips in the field is difficult due to its cryptic behaviour. Thus, the combination of ...

A Comparative Study Of Overweight And Obesity Among Basic School Pupils From Selected Schools In The Asante Akim Central Municipality.

ABSTRACT The purpose of this study was to determine and compare the prevalence of obesity among private and public basic school pupils in the Asante Akim central municipality using a cross sectional survey. A total of 200 children from private and public schools were selected using the simple random sampling technique. Data were collected using a structured questionnaire, a food frequency questionnaire, the Physical Activity Questionnaire for Children (PAQ-C) and anthropometry. The data obtai...


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