17 research outputs found
Infestation of Zebu cattle (Bos indicus Linnaeus) by hard ticks (Acari: Ixodidae) in Maiduguri, Northeastern Nigeria
No full textPaul, Bura Thlama, Bello, Amina Mohammed, Haruna, Nasir Musa, Dauda, Jamila, Ojo, Deborah Tosin, Gadzama, Mercy Ahmed (2017): Infestation of Zebu cattle (Bos indicus Linnaeus) by hard ticks (Acari: Ixodidae) in Maiduguri, Northeastern Nigeria. Persian Journal of Acarology 6 (3): 213-224, DOI: 10.22073/pja.v6i3.28203, URL: https://www.mendeley.com/catalogue/bfd2a667-ffa6-3ee3-adbf-1a9684dc3adb
Figure 2 in Infestation of Zebu cattle (Bos indicus Linnaeus) by hard ticks (Acari: Ixodidae) in Maiduguri, Northeastern Nigeria
No full textFigure 2. Numbers of individual ticks of different species collected from different body parts of cattle.Published as part of Paul, Bura Thlama, Bello, Amina Mohammed, Haruna, Nasir Musa, Dauda, Jamila, Ojo, Deborah Tosin & Gadzama, Mercy Ahmed, 2017, Infestation of Zebu cattle (Bos indicus Linnaeus) by hard ticks (Acari: Ixodidae) in Maiduguri, Northeastern Nigeria, pp. 213-224 in Persian Journal of Acarology 6 (3) on page 218, DOI: 10.22073/pja.v6i3.28203, http://zenodo.org/record/717366
Abubakar Dauda. — “They love us because we give them Zakāt.” The Distribution of Wealth and the Making of Social Relations in Northern Nigeria
No full textThis book is based on a dissertation submitted in partial fulfillment of the requirements for the Ph.D at the Graduate School “Muslim Cultures and Societies” of the Freie Universität of Berlin. It is published as the twenty-third volume of the “Islam in Africa” series inititated by E. J. Brill in 2003. It is a good addition to this series, which had already made a considerable contribution to the understanding of Islam and Muslim societies in Africa. Its author, Dauda Abubakar, analyzes the p..
An Appraisal of President Muhammadu Buhari’s Strategic Silence on Selected National Issues and Its Implication on His Government’s Image
No full textThis study examines the strategic silence under President Muhammadu Buhari’s administration in Nigeria. Anchored on Shannon and Weaver mathematical model of communication and spiral of silence theory, the study beams a searchlight on instances of President Buhari’s strategic silence, public perception of Buhari’s silence on sensitive national issues; and the implications of his silence on his administration’s image. The study which adopted qualitative research approach recommends that President Muhammadu Buhari should personally cultivate the culture of addressing Nigerians on sensitive national issues to give the people a sense of belonging and trust and that the president should change the negative perception of his administration by reducing the rate at which he depends on media team and spokespersons to communicate to the people on virtually everything
Impact of Heavy Metals Toxicity on Children and Adults from Local Rice Varieties of Northern Nigeria
No full textThe current study aimed to investigate the levels of heavy metals [cadmium (Cd), zinc (Zn), arsenic (As), lead (Pb), and mercury (Hg)] in local rice varieties named Jamila (JM), Santana (STN), Kwandala (KW), and Sipi (SP) collected from Danbatta town of Kano State, Northwestern Nigeria. The samples of local rice varieties were digested using HNO3 and HCl as digestion acids in a ratio of 2:1 (v/v). The digested samples were later analyzed for heavy metals using atomic absorption spectrophotometer. Moreover, the health risk assessment of heavy metals by the consumption of local rice varieties among local children and adults was also estimated based on estimated daily intake (EDI), target hazard quotient (THQ), hazard index (HI), and target cancer risk (TCR). The concentrations of Cd, Zn, and Pb dry weight basis observed in the range of 0.002-0.06, 0.02-20.0, and 1.16-14.2 mg/kg, respectively. Hg was detected only in the SP rice variety with a concentration of 0.022 mg/kg. Whereas, As was detected in STN (0.086 mg/kg), KW (0.006 mg/kg), and SP (0.028 mg/kg). The resulting data showed that Cd, Zn, Hg, and As were within the maximum permissible limits set by regulatory bodies. The EDI values ranged from 1.21E-5 -1.21E-1 and 5.0E-6 – 5.0E-2 for children (24 kg body weight) and adults (70 kg body weight), respectively. The data of the non-carcinogenic risk assessment indicated that the THQ values of Cd, Hg, and As were less than the maximum permissible limit of 1.0 for both children and adults. The HI data showed the potentially high possible health risk of the heavy metals by the consumption of the studied local rice varieties, with Pb being the major contributor. Similarly, resulting data of TCR for Cd and Pb showed high cancer risk upon the consumption of the studied local rice varieties over a long time
Finite element modelling of hot rolling of Al-3%Mg and the kinetics of static recrystallisation
No full textThe principal objectives of this work were (i) to investigate the effect of geometry on the through-thickness gradient in microstructure evolved during post-deformation annealing treatment of rolled AI-3%Mg slabs and (ii) to employ the finite element method and empirical equations characterising the rate of static recrystallisation to predict the gradient in the volume fraction recrystallised through the slab thickness. Geometry was characterised by the aspect ratio of the deformation zone. The finite element method was used principally to simulate the evolution and spatial distribution of process parameters namely the strain, strain rate and temperature of deformation through the rolled slab thickness. Standard metallographic techniques and quantitative metallography combined with optical microscopy under polarised light were employed to measure the volume fraction recrystallised. The geometric orientation of microbands developed due to hot deformation was also characterised. Rate-dependent, thermomechanical material constitutive data based on the hyperbolic sine and Voce type of flow stress/strain relationships were used as input in the two-dimensional finite element model together with a friction model based on the penalty method. Published empirical equations linking the rate of static recrystallisation and the process parameters were then employed to predict the measured volume recrystallised. Results indicated that gradients in microstructure occurred through the rolled slab thickness for all the slab/geometry and rolling conditions considered and that the orientation of microbands developed independent of the rolling reduction. The main conclusions drawn were that (i) geometry had a profound effect on the evolution of microstructure through the rolled slab thickness; (ii) the finite element method can be used as an effective tool in the prediction of through-thickness gradient in microstructure evolved in the post-deformation annealing treatment; and (iii) microband development was an important microstructural feature during hot rolling of AI-3%Mg, acting as potential nucleation sites for subsequent static microstructural transformation processes. (author)Available from British Library Document Supply Centre-DSC:DXN045785 / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo
A Retrospective Study of Cases of Disease Condition of Large and Small Ruminants Handle at the State Veterinary Hospital Maiduguri, Borno State, Nigeria
No full textA Retrospective Study of Cases of Disease Condition of Large and Small Ruminants Handle at the State Veterinary Hospital Maiduguri, Borno State, Nigeria
No full textA retrospective study of cases of some diseases conditions handled and recorded at the state veterinary hospital Maiduguri from March, 2012 to April, 2016 was conducted. Cases of diseases conditions were selected based on consistency of recorded history, clinical signs and treatments as well as their public health significance. These includes; Listeriosis, Mange, Peste des petits ruminantis (PPR), Urinary tract infections (UTI), Tetanus, Mastitis, Sheep pox, Goat pox and Dog bite cases. The frequency distributions of the cases were presented according to species, year and months. Out of the total of 398 cases recorded, the occurrence of diseases and health condition was found to be highest in ovine with 243 (61%) cases, while caprine and bovine has 153 (38%) and 2 (0.5%) cases respectively. Mange and dog bite cases were found to be highest and lowest with 111 (28%) and 11 (3%) cases respectively. Highest and lowest number of cases were recorded in 2015 and 2013 with 178 (45%) and 35 (9%) cases respectively. Similarly, the study showed that the months of March and August has the highest and lowest number of recorded cases of 62 (16%) and 13 (3%) respectively. This study showed that sheep were frequently presented to the hospital for treatment than goats and cattle, this may be due to their high market value, ease of handling and for religious festivities. The high number of cases recorded in 2015 may be due to increased awareness of the hospital location and services provided by the hospital through the use of mass media at that time, while the low number of cases may be due to the lost of large volume of recorded cases for up to 5 months (May-September) couple with the insecurity situation of the town at that time. Disease occurrences during the dry season (March) tend to rise, this may be associated with inadequate pasture which may lead to starvation and reckless scavenging of food, and the available pastures tend to have lost their nutritive value
Insights on Phytomonas: A Bibliometric Analysis on Global Research Outputs Highlighting Research Gaps and Future Directions
No full textThe study aims to access the research output on Phytomonas from inception to 2023 using bibliometric science mapping and visualization tools. We analyzed the distribution of publications retrieved from the Scopus database, categorized topics, and tracked progress over time. Additionally, we examined country contributions and author collaboration (co-authorship), with particular emphasis on research topics and emerging research areas. We also highlighted the paucity of research from Australia, Africa, and Asia, where Phytomonas could be a major parasite affecting important crops
Activity and Selectivity in the Electrochemical Reduction of CO2 at CuSnx Electrocatalysts Using a Zero-Gap Membrane Electrode Assembly
No full textThis article was originally published in Journal of The Electrochemical Society. The version of record is available at: https://doi.org/10.1149/1945-7111/ad6fd7.
© 2024 The Author(s). Published on behalf of The Electrochemical Society by IOP Publishing Limited. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY, http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse of the work in any medium, provided the original work is properly cited. [DOI: 10.1149/1945-7111/ad6fd7]In this study Cu, Sn, and bimetallic CuSnx nanoparticles were synthesized and evaluated as electrocatalysts for CO2 reduction using zero gap membrane electrode assemblies. Results show bimetallic electrocatalysts with Sn contents above 10% yield formate as a primary product with Faradaic Efficiencies near 70% at 350 mA cm−2. Cu-Snx electrocatalysts with less than 10% Sn yield CO at current densities below 350 mA cm−2 and relatively lower cell potentials. When the low-Sn content bimetallic electrocatalysts were evaluated in alkaline anolytes at 350 mA cm−2, ethanol was recorded as the primary product (FE = 48.5% at Ecell ≥ 3.0 V). We propose enhanced C2 activity and selectivity originate from Cu dimers adjacent to Sn atoms for bimetallic electrocatalyst with low-Sn content. The C2 active sites are lost when the surface Sn content exceeds 25%–38%.This work was supported by the U.S. National Science Foundation under Award Number 2119435. A.L.O. acknowledges funding by the National Science Foundation under Award Number 1954611. Portions of this research were conducted with high performance computing resources provided by Louisiana State University (http://www.hpc.lsu.edu)
