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Search Results: 1 - 10 of 553916 matches for " B.A Ekeke "
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Quantitative Review and Distribution Status of Mangrove Forest Species in West Africa
B.A Oyebade, E.A Emerhi, B.A Ekeke
African Research Review , 2010,
Abstract: This paper statistically evaluated the distribution of mangrove forest distributions in Nineteen (19) countries of Africa where eight major species of mangrove exist. Secondary data about mangrove forest coverage from literature were obtained in respect of 19 countries of West Africa where mangrove forest exists for six years. The data were subjected to ANOVA statistical analysis using STATISTICA software package. The results indicated highest estimates of mangrove coverage in Nigeria with highest total mangrove coverage of 7386km2 and Sao Tome Principe with lowest estimates of 1.4km2. The results indicated that most West African mangroves forests suffer progressive decline particularly the countries that have large mangrove forests. The results also suggest that most West African countries are yet to evolve conservation ethics for their mangrove forests. Of all the countries, the Nigerian mangrove forest is the most threatened by fragmentation, isolation and surface drainage alteration that could be traced to indiscriminate logging, urbanization and recent oil and gas activities in the Niger Delta. Keyword: Mangrove forests, West African Forests, Forest evaluation
Nutrient Values of Chrysophyllum Albidum Linn African Star Apple as a Domestic Income Plantation Species
U.N Ureigho, B.A Ekeke
African Research Review , 2010,
Abstract: This study analyzed the nutritive composition of Chrysophyllum albidum Linn. It was necessitated by the need towards creating awareness that this species can provide nutrient supplements for the larger percentage of the population in the rural and peri-urban communities. Chrysophyllum albidum locally called “Udara” is one of the 80 species of Chrysophyllum Linn, a pan-tropical genus. Market Survey was done to collect data from three major markets in Rivers State known for assorted fruits business. Eight to ten of morphologically differing types were characterized and further identified into types. Nine fruit types were morphologically identified and comprehensively analyzed in Food Science and Technology Laboratory, Rivers State University of Science and Technology for nutrient content. The analysis has shown that Chrysophyllum albidum has an approximation of carbohydrate (11%), crude fibre (4%), Lipids (3%), protein (7%), Calcium (17.11ppm), Iron (< Ippm), phosphorus (9.92ppm), vitamin C (25.03ppb), A (10.74ppb), B1 and B2 (< 1ppb). It is recommended that the awareness of the nutritive value of this species be created so as to increase it’s consumption as food supplement to the larger population and expand its utilization.
Sand Dredging Impact on the Fish Catch in Bonny River Estuary, Nigeria
B.A. Ekeke,O.A. Davies,J.F. Alfred-Ockiya
Environmental Research Journal , 2012,
Abstract: The impact of sand dredging off Atlantic Ocean of the Bonny River Estuary on fish catch in the surrounding fishing communities was studied. This study was conducted to assess the major fish species commonly caught at the selected major landing sites in the area. Sampling was carried out for three consecutive days twice a month between October and November 2002 from three major fish landing sites (Bonny Coal Beach, Amariaria/Lighthouse and Bregidi). The fish catch study was carried out within and around the areas that could be affected by the runoff water from the stockpiled dredged sand. A total of 45 fish species (finfishes and shellfishes) from 33 families were identified during this study. The finfish families were Ariidae, Bagridae, Cichlidae, Clupeidae, Carangidae, Cynoglossidae, Dasyatidae, Ephippidae, Lutjanidae and amongst others. The observed shellfish families were Portanidae, Palaemonidae, Muricidae, Crassostredae, Ocypodidae and Potamidae. The estimated total fish landing values of this study were higher except at Bregidi than the values obtained in previous studies. The results showed that the river system was still a good fishing ground indicating that the sand dredging activities had no significant impact on the fish catch.
B.A Onile
African Journal of Clinical and Experimental Microbiology , 2002,
Abstract: The sexually Transmitted Diseases constitute major public health problems in Nigeria. There is early sexual maturity and considerable sexual activity between 9 and 15 years of age. Although there is a high awareness of the condom, people are unwilling to use them despite evidence of multiple sexual exposures. The STDs, including HIV infections, are on the increase. Tuberculosis is also on the increase because of a HIV/AIDS epidemic. Both categorical and integrated approach to the management of STDs and AIDS are being recommended. There is a need to step up basic research into the biology of HIV and subsidize the treatment of AIDS. Efforts at vaccine development should be initiated to stem the worsening HIV epidemic. (Af. J. of Clinical and Experimental Microbiology: 2002 3(2): 78-81)
Chemical Composition of Musa sapientum (Banana) Peels
B.A. Anhwange
Journal of Food Technology , 2013,
Abstract: Musa sapientum peels were analysed for minerals, nutritional and anti-nutritional contents. The result of mineral content indicate the concentrations (mg g 1) of potassium, calcium, sodium, iron, manganese, bromine, rubium, strontium, zirconium and niobium to be 78.10, 19.20, 24.30, 0.61, 76.20, 0.04, 0.21, 0.03, 0.02 and 0.02, respectively. The percentage concentrations of protein, crude lipid, carbohydrate and crude fibre were 0.90, 1.70, 59.00 and 31.70, respectively. The results indicate that if the peels are properly exploited and process, they could be a high-quality and cheap source of carbohydrates and minerals for livestock.
The fish community of the Berg River estuary and an assessment of the likely effects of reduced freshwater inflows
B.A. Bennett
African Zoology , 2012,
Abstract: ENGLISH ABSTRACT: Data concerning the species composition, abundance and distribution of fishes in habiting the Berg River estuary are presented and used to assess the value of the estuary to fish, and the likely effects of reduced freshwater in flows. A total of 31 species was recorded, eight of which were classified as estuarine residents, 11 as marine estuarine-opportunist, six as marine stragglers and six were freshwater species. Liza richardsonii, an opportunist, was the most abundant (54% N) and widely distributed species encountered during the winter and summer seine-net surveys. Three other species (all residents) contributed more than 10% of the total catch; Atherina breviceps and Caffrogobius nudiceps occurring most abundantly in the lower estuary, and Gilchristella estuaria in the middle estuary. The low number of species compared with estuaries in other regions of the South African coast reflect a well-established marine biogeographical trend. The higher proportions of resident species, entirely dependent species and partially dependent species suggest, however, that west coast estuaries may be more important to the fish that inhabit them than are estuaries in other regions. It is concluded that the fish community of the estuary is already suffering the effects of habitat degradation and that further reducation in freshwater inflows are not desirable. ******** AFRIKAANSE OPSOMMING: Data betreffende die spesiessamestelling, talrykheid en verspreiding van visse wat die Bergriviermond bewoon, word aangebied en gebruik in 'n raming van die waarde van die mond vir die bewonende visse, en die moontlike gevolge van verminderde varswaterinvloei. 'n Totaal van 31 spesies is aangeteken, agt waarvan geklassiliseer is as mondinwoners, 11 as mariene trekvisse, ses as mariene swerwers en ses as varswateisoorte. Liza richardsonii, 'n trekvis, was die volopste (54%N ) en mees wydverspreide spesies wat te gekom is gedurende die winter- en someropnames. Die ander spesies (almal inwoners) het meer as 10% bygedra tot die totale vangs, met Atherina breviceps en Caffrogobius nudiceps wat volopste in die laer-, en Gilchristella estuaria in die middelgedeeltes van die strandmeer, voorkom. Die klein aantal spesies weerspie l 'n goed vasgelegde mariene biogeografiese neiging. Die groter proporsie van inwonerspesies, total afhanklike en gedeeltelik afhanklike spesies suggereer egter dat Weskusriviermonde belangrikerr mag wees vir die visse wat hulle bewoon as riviermonde in ander streke. Die gevolgtrekking word gemaak dat die visgemeenskap van die riviermonde reeds on
The Effects of Cooking Time on the Nutritional Parameters of Soya Milk
B.A. Orhevba
American Journal of Food Technology , 2011,
Abstract: In this study, the effect of cooking time on the nutritional quality of soya milk was determined with a view of obtaining the approximate time at which soya milk should be cooked to have its optimum benefit for man. Standard laboratory conditions, methods and instruments were used to obtain the results of the experiments. The soya milk samples were cooked for 15, 30 and 45 min, respectively and there were significant differences in the nutritional composition of soya milk cooked between these time intervals. Soya milk cooked for 15 min was characterized by a moisture content of about 93.45%; ash 4.17%; protein 3.72%; lipids 12.0%; carbohydrates 80.11% and energy value of 443.32 kcal/100 g. On the other hand, the soya milk prepared for 30 min contained moisture content level of 92.29%; lipids 6.48%; energy value of 409.08%, ash 5.83%, crude protein 4.23% and carbohydrates 83.46%. The sample of soya milk prepared for 45 min was characterized by ash content of 6.0%, crude protein 4.74% and lower moisture content 90.36%, lipids 6.17%, carbohydrates 83.09% and energy value of 406.00 kcal/100 g. The minerals investigated gave the following results under treated time of 15, 30 and 45 min, respectively; sodium: 27, 23 and 27 mg/100 mL, potassium: 41, 60 and 62 mg/100 mL, magnesium: 32.2, 31 and 35 ppm and calcium: 109.5, 81 and 90.0 ppm, respectively. It was evident that there were varying degrees of changes that occurred in each of the chemical composition of the soya milk with respect to the different periods of cooking.
Underwater Telemetry as a Tool in Aquaculture Research and Development
B.A. Holand
Modeling, Identification and Control , 1987, DOI: 10.4173/mic.1987.1.2
Abstract: Small acoustical transmitters may be used to obtain data from free swimming fish. The main principles behind this technique are described together with some of the equipment developed. Some examples are briefly discussed where heart beats, depth and temperature are measured to describe fish behaviour. Automatic fish tracking equipment that has been used to track fish within an enclosed area is also described.
Trends in the control of heartwater : tick-borne diseases
B.A. Allsopp
Onderstepoort Journal of Veterinary Research , 2010, DOI: 10.4102/ojvr.v76i1.69
Abstract: Heartwater is an economically serious tick-borne disease of ruminants caused by the intracellular bacterium Ehrlichia ruminantium. The disease has traditionally been controlled by four different approaches : controlling the tick vector by dipping, establishing endemic stability, performing immunisation by infection and treatment, and preventing the disease by regular administration of prophylactic antibiotics. The first three of these methods are subject to failure for various epidemiological reasons, and serious disease outbreaks can occur. Prophylaxis is effective, but very expensive, and the logistics are daunting when large herds of animals are involved. The development of a safe, cheap and effective vaccine is the only likely way in which heartwater can be economically controlled, and over the past 15 years three new types of experimental vaccine have been developed: inactivated, attenuated, and recombinant vaccines. These new vaccines have shown varying degrees of promise, but none is as yet sufficiently successful to be marketable. We describe the experimental products, and the various technical and biological difficulties which are being encountered, and report on ways in which new technologies are being used to improve vaccine effectiveness.
How age affects auditory-cognitive interactions in speech comprehension
B.A. Schneider
Audiology Research , 2011, DOI: 10.4081/audiores.2011.e10
Abstract: To participate effectively in multi-talker conversations, listeners need to do more than simply recognize and repeat speech. They have to keep track of who said what, extract the meaning of each utterance, store it in memory for future use, integrate the incoming information with what each conversational participant has said in the past, and draw on the listener’s own knowledge of the topic under consideration to extract general themes and formulate responses. In other words, to acquire and use the information contained in spoken language requires the smooth and rapid functioning of an integrated system of perceptual and cognitive processes. Here we review evidence indicating that the operation of this integrated system of perceptual and cognitive processes is more easily disrupted in older than in younger adults, especially when there are competing sounds in the auditory scene.
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