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Institution

Rivers State University of Science and Technology

EducationPort Harcourt, Rivers, Nigeria
About: Rivers State University of Science and Technology is a education organization based out in Port Harcourt, Rivers, Nigeria. It is known for research contribution in the topics: Population & Threatened species. The organization has 1826 authors who have published 1833 publications receiving 15183 citations.


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Journal ArticleDOI
TL;DR: Age, residency status and seasonal variations were found to be important risk factors associated with infection and the overall prevalence of the parasitic agents varied significantly with seasonal changes, being highest during summer and least during winter.
Abstract: An epidemiological survey was conducted on the prevalence, intensity, seasonality and risk factors associated with intestinal parasites of cats in Southeast Nigeria between February 2011 and January 2012, spanning all the seasons of the year. A total of 119 cats (68 stray and 51 domesticated) were surveyed. Out of these, 88 (73.9 %) were infected with at least one intestinal parasite. In terms of individual infections, Dipylidium caninum had the highest prevalence (59.7 %) and intensity (42.5 ± 4.3), while the lowest prevalence was for Blastocystis spp. (1.7 % prevalence and 0.8 ± 0.6 intensity). While the prevalence of individual parasites was comparable between the stray and domesticated cats except for Blastocystis spp., the intensity of infection was significantly higher (p 0.05) except for Blastocystis spp. but age dependent. On the basis of individual organisms, prevalence of nematode parasites was significantly higher (p 0.05) while protozoa followed no definite pattern. The overall prevalence of the parasitic agents varied significantly (p < 0.05) with seasonal changes, being highest during summer (June–August) and least during winter (December–February). Age, residency status and seasonal variations were found to be important risk factors associated with infection. The above findings are critical, given recent concerns about the growing public health importance of zoonosis worldwide.

9 citations

Journal ArticleDOI
TL;DR: In this article, the results of a structured questionnaire survey concerning the ecology and distribution of R. swinhoei in Vietnam were reported. But the survey was conducted with 10 former hunters with several years of experience in catching this species, and there was considerable consensus among the hunters regarding several aspects of the biology of this species.
Abstract: Rafetus swinhoei, a giant softshell turtle from southern China and northern Vietnam, is the rarest turtle species on Earth, and only two individuals are known worldwide (one in the wild). There is very little ecological information for this species, and the remnant distribution remains completely unknown. This article reports for the first time in the international literature the results of a structured questionnaire survey concerning the ecology and distribution of R. swinhoei in Vietnam. The standardized questionnaire consisted of 15 questions and was administered to 10 former Rafetus hunters with several years of experience in catching this species. There was considerable consensus among the hunters regarding several aspects of the biology of R. swinhoei, with special reference to its reproductive and feeding habits. The mean weight of 58 captured individuals was 53 kg, with the majority of individuals weighing 15–40 kg (median = 40 kg) and only 17.2% of individuals weighing more than 100 kg. Based on the hunters'answers, it was established that the population collapse of R. swinhoei in Vietnam occurred in two phases: first during the 1980s, when the population size dramatically decreased, and second, at the beginning of the 1990s, when many hunters simultaneously collected multiple individuals from populations already experiencing severe impacts. There was also a general agreement that these turtles became very rare after 1991–92. In total, 90% of the hunters agreed that there should still be wild R. swinhoei individuals at their respective sites, and some of the hunters also reported a few recent sightings that they attributed to the target species. As several sites of likely presence were identified, we suggest that extensive trapping should be planned at these sites in future.

9 citations

Journal ArticleDOI
TL;DR: The effect of sugar cane juice on slump values, setting time and compressive strength of concrete cubes was investigated in this paper, where a total of 32 concrete cubes of size 150x150x150mm with a mix ratio of 1:2:4 were cast with different percentages of unfermented cane juice replacing some proportion of water in the concrete mix.
Abstract: The effect of sugar cane juice, (SCJ) on slump values, setting time and compressive strength of concrete cubes was investigated. A total of 32 concrete cubes of size 150x150x150mm with a mix ratio of 1:2:4 were cast with different percentages of unfermented sugar cane juice replacing some proportion of water in the concrete mix. Water/Sugar Cane Juice/cement ratio was held constant at 0.45. The concrete cubes were prepared by replacing water with SCJ in the following proportions 0, 25, 50 and 100%. The cubes were cured, tested and the physical properties of interest in this study were determined. The slump values of the concrete decreased from 40mm at 100: 0 (water:SCJ) to 18mm at 50:50 (water:SCJ) and to 0mm (collapse) at (0:100) (water :SCJ). The final setting time of concrete increased with increase in proportion of SCJ. The highest final setting time of 42 hours (considered excessive), occurred at 75:25 (water:SCJ) proportion. The compressive strength of the (water:SCJ) concrete decreased as the percentage of SCJ increased up to 25% SCJ. Thereafter, an increase in compressive strength was noticed up till 100% SCJ, with a maximum strength of 13.08N/mm 2 occurring at 100% SCJ at 28 days. The early strength reduction is due to quick-setting of the concrete, at 25% SCJ, retardation commences and the strength of concrete increases. The study has been carried out at 0, 25, 50 and 100% replacement by weight of potable water with SCJ. A comparative study has been done between concrete made with potable water and those made with water/sugar cane juice. http://dx.doi.org/10.4314/njt.v34i2.6

9 citations

Journal ArticleDOI
TL;DR: In this article, the effect of substituting wheat flour with flour from roasted African breadfruit (Treculia africana Decne) seeds at levels of 0-25% was investigated for its effect on bread making properties.
Abstract: Replacing wheat flour (WHF) with flour (ABF) from roasted African breadfruit (Treculia africana Decne) seeds at levels of 0-25% was investigated for its effect on bread making properties. Resistance to extension (R), extensibility (E) and mechanical work for deformation (W) of doughs prepared from the blends were studied using a Chopin alveograph. Loaves were prepared using the straight-dough bread baking procedure and evaluated for loaf volume, loaf weight, loaf height and sensory characteristics. There were no significant (p 0.05) differences between WHF and blends containing 5-10% ABF in the alveograph values for R, E, and W. Up to 10% substitution of WHF with ABF produced bread with crust color, crumb color, crumb texture, loaf height and loaf volume similar to the control. Use of higher levels (15-25%), however, resulted in reduction in these quality attributes. Addition of ABF at levels above 5% was detrimental to bread flavor.

9 citations


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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20235
202210
2021203
2020300
2019220
2018108