Environmental & Physical Sciences

Research Papers/Topics Environmental & Physical Sciences

Studies On The Biology And Activity Levels Of Carboxylesterase As An Indicator Of Insecticide Resistance In Populations Of Diamondback Moth, Plutella Xylostella (L.) (Lepidoptera: Plutellidae

ABSTRACT Biology of Diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae) was studied in the laboratory under controlled conditions, i.e. 28 ±1 °C, 65-70 % r.h and a photoperiod of 12L: 12D hours. The results indicated that the developmental time of P. xylostella from egg to adult emergence took on the average 17.5 days. About 59 % of the eggs were laid on the first night of oviposition. Additionally females were generally larger (5.0mm) than males (4.5 mm). Effects of tempe...

SSA Research 103 PAGES (18236 WORDS) Entomology Thesis
Host Plant Suitability Of The Papaya Mealybug, Paracoccus Marginatus Williams And Granara De Willink (Hemiptera: Pseudococcidae), And The Host Specificity Of Its Natural Enemy, Acerophagus Pa

ABSTRACT The papaya mealybug Paracoccus marginatus Williams and Granara De Willink (Hemiptera: Pseudococcidae) is an invasive pest insect that can damage a wide range of agricultural crops. Successful biological control of this pest strongly relies on its mass rearing in order to produce its introduced natural enemy, Acerophagus papayae. Host susceptibility studies of P. marginatus were done on four different host plants: Manihot esculenta (cassava), Solanum macrocarpon (African egg-plant), V...

SSA Research 142 PAGES (24583 WORDS) Entomology Thesis
Assessment Of The Effects Of Quarrying Activities On Some Selected Communities In The Lower Manya Krobo District

ABSTRACT This study assessed the effects of quarrying activities on some selected communities in the Lower Manya Krobo District. Questionnaires targeting inhabitants around the quarry sites, observations, collection of health records from well patronized hospitals/clinics and dust (PM10) sampling were used as data gathering instruments. The study revealed that some of the men have been employed as quarry workers and a substantial number of women in the area have become food vendors at the qua...

The Relationship Between Women's Economic Activities And The Adequacy Of Feeding Their Pre-School Children: The Case Of HO In The Volta Region

ABSTRACT The study examined the Relationship Between Women's Economic Activities and the Adequacy of Feeding their PreSchool children at Ho in the Volta Region. The main aim of this project was to find out the relationship between the length of time mothers spent away from home and feeding adequacy which was assessed by growth performance of the children. In all 70 working mothers with children aged 24 - 60 months were studied. A semi-structured questionnaire was used to collect demographic ...

Effects Of Different Control Strategies On Maize Plant Recovery And Yield After Fall Armyworm Infestation

ABSTRACT The larvae of Fall Armyworm (FAW), Spodoptera frugiperda (J. E. Smith), (Lepidoptera:Noctuidae), can cause significant damage to crops such as maize if not well managed. The purpose of this study was to determine the levels of natural infestation of FAW along the phenology of maize under field conditions, investigate the critical stages for FAW control along maize phenology, and to ascertain the effect of different treatments on maize recovery and yield after FAW infestation. This w...

Pub Network 75 PAGES (15152 WORDS) Entomology Thesis
The Relationship Between Women's Economic Activities And The Adequacy of Feeding Their Pre-School Children: The Case of HO in The Volta Region

ABSTRACT The study examined the Relationship Between Women's Economic Activities and the Adequacy of Feeding their PreSchool children at Ho in the Volta Region. The main aim of this project was to find out the relationship between the length of time mothers spent away from home and feeding adequacy which was assessed by growth performance of the children. In all 70 working mothers with children aged 24 - 60 months were studied. A semi-structured questionnaire was used to collect demographic ...

Determination Of The Activity Concentrations Of Radon-222 And Radon-220 In Water And Soil Samples From Newmontakyem Gold Mine Using Gamma Spectrometry

ABSTRACT In this study a total of 28 water and soil samples were analysed by High Purity Germanium (HPGe) detector for 222Rn (Radon), 220Rn (Thoron) and other natural radionuclides (226Ra, 232Th plus 40K) activity concentrations. The data generated was then used to assess radiological hazards posed to the public. The radon (Rn-222) concentration in the surface water varied from 0.015 to 1.701 Bq/L with a mean value of 0.913 ± 0.605 Bq/L against the global average of 11 Bq/L and thoron (Rn-22...

Characterisation Of Bemisia Tabaci (Gennadius) (Homoptera: Aleyrodidae) Biotypes Associated With Some Selected Crops In Southern Ghana.

ABSTRACT Intraspecific variation and biological heterogeneity in the whitefly Bemisia tabaci make it a major pest in diverse agricultural systems worldwide. The economic burden of this insect pest owes to its apparent polyphagy, vectorial capacity for viruses, and propensity for insecticide resistance development. Ecological specialisation has been observed in the species, which compounded with the variability, and adaptability pose serious impediments in its control. Effective description of...

CDR Coalition 210 PAGES (43996 WORDS) Entomology Thesis
Appearance Management: Shopping Styles, Dress Styles And Personality Traits Of Female Young Adults

ABSTRACT An understanding and application of consumer behaviour to fashion product development and marketing provides a competitive advantage that leads to the success of every fashion business. The purpose of the study was to evaluate the relationship among shopping styles, dress styles and personality traits of Ghanaian female young adults. A cross-sectional design with a quantitative approach was used to conduct the study. A multistage sampling technique was used to select 447 Ghanaian fem...

The Influence Of Climate Variability And Change On The Attainment Of Energy Security In Ghana: A Study Of The Akosombo Hydroelectric Power Project

ABSTRACT The impacts of climate variability and change including the influence of ENSO are real and affect several productive economic sectors such as agriculture, water, forest resources and energy. Energy is a very important sector for achieving sustainable development. Ghana has continuously relied heavily on Akosombo and Kpong hydropower stations to supply electricity for household and industrial use. Historical records have shown that variability and change in rainfall including the inf...

Physicochemical and Sensory Evaluation of A Breakfast Cereal Made from Sprouted Finger Millet-Maize Composite Flour

ABSTRACT Underutilized and marginalized food crops are less regarded with respect to promotion and exploration. Nonetheless, they are more adapted to adverse climatic changes, a global food security problem, especially in third world countries. This has necessitated the exploration and promotion of the potential of deserted indigenous food crops on the verge of extinction, to safeguard food security in developing countries. This research studied the performance of finger millet flour (FMF) i...

Pub Network 151 PAGES (33902 WORDS) Home Science Thesis
A Least Squares Collocation Method Of Geoid And Datum Determination For Nigeria

ABSTRACT A geodetic datum in Nigeria is ill-defined, hence a redefinition is necessary.

Exploring The Link Between Adaptive capacity And Nutritional Needs OF Low-Income HouseHolds In Karaga District Of The Northern Region Of Ghana

ABSTRACT Climate change is projected to have an adverse impact on the health and wellbeing of households especially in sub-Saharan Africa. This could be through disruptions in food production and distribution systems leading to food insecurity or the proliferation of diseases vectors both of which contributes to the prevalence of malnutrition. The high prevalence of stunting in the northern parts of Ghana despite various nutrition and health interventions by government and other development ...

Effects Of Variety And Processed Forms Of Cassava Chips On The Development Ofprostephanhs Truncates (Horn) (Coleoptera: Bostrchedae) And Araeceriis Fa Sc 1c Ula Tl Fs (Degeer) (Coleoptera Ant

ABSTRACT Studies were earned out on the effects of variety and processed form of cassava chips on the development of Prostephanus truncatus (Horn) (Coleoptera: Bostrichidae) and Araecerus fasciculatus (Degeer) (Coleoptera: Anthribidae). Additionally, changes in the nutrient composition of the chips due to infestation, and the influence of major nutrients on the population parameters of these insects were also studied Statistical analysis of insect preference to the processed chips in a choic...

Pub Network 117 PAGES (28157 WORDS) Entomology Thesis
A Comparison Of Some Transformation Procedures For The Nigerian Geodetic Network

ABSTRACT The relationship between global and local datums is usually established by determining the set of transformation parameters needed to transform the coordinates of points from one datum to the other.


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