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The manual presents the main methods for studying fish. The general features of the external structure of fish are described: the shape of the body, external organs, the structure and functions of the fins, the types of scales, and the structure of the lateral line. The indicators of morphometric studies of fish with the use of meristic and plastic features according to the classical schemes of measuring...
The inevitable consequence of the widespread use of antimicrobial agents has been the emergence of antibiotic resistant pathogens. This necessitates an ever-increasing search for new drugs. In an effort to develop antimicrobial agents, a series of hydrazone 2-6-derivatives were synthesized. These were characterized on the basis of physical and spectroscopic data, and were evaluated for their antimicrobial...
Obeche (Triplochiton scleroxylon K. Schum.) is a large tropical tree, the wood products of which are either in solid or reconstituted forms. These items are extremely vulnerable to concomitant insect attack. Although established as a successful plantation species for veneering and plywood production, Obeche is also considered as a good environmental tree in Nigeria. However, there is very little specific...
This study was conducted using secondary data from the Meteorological Department obtained from five stations in Ratnapura District: Ratnapura, Eheliyagoda, Balangoda, Lellopitiya and Embilipitiya. The objective of the study was ‘to identify rainfall trend and variability analysis in the study area and to find the impact of climate changes on rainfall variability in the study area’. The average rainfall...
The tremendous rise in development of resistance to antimicrobials has created an alarming situation for researchers and clinicians. In this regard, an attempt has been made to develop a series of azole-based derivatives. The presented study consists of the design and synthesis of some newer derivatives by incorporating the isoxazole nucleus in the pharmacophore. These are also characterized physicochemically...
Field evaluation of insect pests and pathogens associated with sesame cultivated in the Niger Delta region of Nigeria was conducted to provide baseline information on their status. The experiment was laid out in Randomized Complete Block Design. Herein, sesame seeds were obtained from the Jos and Maiduguri main markets. These were sown, then data were collected on insect species beginning three weeks...
Water is a limited resource, hence there is a need for its judicious use. This study was designed to investigate the utilization and the effects of grey water irrigation on the growth parameters of African spinach (Amaranthus hybridus) and its soil properties when planted in a green house. The irrigation treatment consisted of Tap water (TW) and grey water (GW) collected from Akindeko Hostel in Federal...
In this study, digital format data comprising of aeromagnetic and remotely sensed (Landsat ETM+7) data were used for structural interpretation of the Awgu area (predominantly underlain by sedimentary rocks) in Enugu State, southeastern part of Nigeria. Aeromagnetic data were analyzed using the Oasis Montaj 7.5 software and interpretation was carried out by applying the vertical and horizontal gradients,...
Forest productivity relies on the quantity and quality of litter as this influences nutrient cycling in the ecosystem. Many studies have been carried out on litter fall, but few attempts has been made to relate litter fall nutrient content with tree growth variables The aim of this work was to investigate basic relationships between the leaf litter nutrient content of Tectona grandis and tree growth...
The major objective of this study is to identify the flood severity level of the study area using GIS applications. By employing this map, safer habitation zones were established. Direct personal observation and face-to-face interview was done to gather the primary data and Disaster Management center reports, Census reports of Sri Lanka, images and published research reports were used as secondary...
Crop raiding activities of primates around Kainji Lake National Park (Borgu Sector), Nigeria was investigated with the use of questionnaires, complemented with field survey focus group discussions and in-depth interviews. One hundred (100) questionnaires were administered to representatives of households in four selected support zone villages. Group discussions were then conducted in the villages...
Plummer Vinson syndrome, also known as ‘Paterson Brown-Kelly’ syndrome is a syndrome associated with the triad of symptoms comprising microcytic hypochromic anaemia, oesophageal strictures and dysphagia. PVS (Plummer Vinson Syndrome) is commonly found in women of middle age especially in the fourth and fifth decade of life and is rarely reported in males and young females. Symptoms resulting from...
Published information about anatomical studies of the lignocellulosic material derived from the rhizomes of Thaumatococcus daniellii is almost non-existent, thereby necessitating this current study. This is aimed at examining, microscopically, the anatomical features of the cell wall structure of this plant’s rhizomes. Consequently, rhizomes differentiated into sections, based on the mean height of...
The present work measures the adsorption capacity of sugarcane bagasse to remove excess lead from groundwater. Batch adsorption experiments were carried out to evaluate the adsorption equilibrium, and the effects of four parameters (pH, adsorbent dosage, equilibrium time and particle size) on the adsorption of lead were investigated. Characterization of the adsorbent was carried out through SEM and...
The aim of this study was to develop a green synthesis of silver nanoparticles using mint plant leaves extracts. The fresh suspension of plant extracts was yellowish-green in color. However, after the addition of AgNO3 within 15min, the suspension showed a change in color to dark brown after 5 hours of incubation at room temperature. The formation of silver nanoparticles was confirmed using UV-Vis...
There are ample facts that the whole world is facing an ecological crisis by reason of heavy deforestation. Thus, this study assesses the influence of deforestation on some selected villages in Borgu Local Government Area, Niger State. Data were collected from members of the community using a set of structured questionnaire. This was then analyzed using descriptive statistics (percentages and frequency...
The antibacterial activity of a PVP-ZrO2 nanocomposite was investigated against pathogenic bacteria S. aureus and K. pneumoniae after antibacterial sensitivity was determined and one isolate was chosen that showed more antibiotic resistance. Herein, the Co-culture technique was used to calculate percent reduction of bacteria. The results that were obtained in this method show that ZrO2 nanoparticles...
Proximate, ultimate and chemical composition of four varieties of dates, namely Digila, Krikri, Sukur and Trigal were determined in the pulp. In addition, the seed kernel of dika nut (Irvingia gabonensis) was assessed on a dry weight basis. The proximate analysis included moisture, volatile matter, Fixed Carbon and ash, respectively, with the pulp of Digila having the highest fixed carbon of 72.73%,...
Farmers/herder conflict has been a major national security issue in Nigeria. Despite all efforts of the government and other well-meaning Nigerians, the problem still lingers. This present study seeks to provide a different perspective in curtailing the existing problem. The study indicated that as long as beef remains the most prominent source of red meat in Nigeria, the problem will still persist...
In this work, synthesis of three pyrazoline derivatives (6-8) is described. (E)-1,3- (phenylsubstituted)-prop-2-en-1-one (3-5) is prepared by the reaction of substituted benzaldehyde with 4-methylacetophenone, whereas condensation cyclization of the same chalcones (3-5) with phenylhydrazine hydrate in ethanol yielded 6-8. The structures of the title compounds (6-8) were characterized by chemical reactions,...
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