117 research outputs found

    SCHOOL ADMINISTRATORS’ COUNSELLING AND CONCEPTUAL SKILLS FOR EFFECTIVE SECONDARY SCHOOL ADMINISTRATION IN RIVERS STATE

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    This study examined school administrators’ counselling and conceptual skills for effective secondary school administration in Rivers State. Two (2) research questions and 2 hypotheses were answered and tested in the study, respectively. The population of the study was the 245 public secondary schools in Rivers State, with a teacher population of 8196, from which 414 (equivalent of 5% from the population) were selected as the sample, using the stratified random sampling technique. The instrument for data collection was a validated 11-item instrument titled ‘School Administrators’ Counselling and Conceptual Skills for Effective Secondary School Administration Scale’ (SACCSESSAS), with a reliability index of 0.87, designed by the researchers in the modified 4-point Likert scale model. Mean scores and standard deviations were used in answering the research questions while z.test statistics were performed and used in testing the hypotheses at 0.05 level of significance. The findings of the study show that school administrators’ counselling skills enhance effective secondary school administration through presenting opportunities for active listening to building rapport and empathy and that administrators conceptual skills enhance school effectiveness through presenting opportunities for school members to think creatively to understanding issues and solving problems. The study also found non-significant differences between the mean ratings of teachers with teaching and non-teaching qualifications on the ways school administrators’ counselling and conceptual skills enhance effective secondary school administration, respectively. It was therefore concluded that school administrators’ counselling and conceptual skills are indispensable in running effective school administration and that as ways forward adequate counselling skills should be employed by school administrators while also making sure that conceptual skills should be in regular use to achieve school effectiveness

    Earprint and fingerprint patterns among two ethnic groups in South Southern Nigerian

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    The study investigated earprint and fingerprint patterns among the Urhobos’ and Ibos’ residing in Warri, South Southern Nigeria. The  study was a descriptive crossectional study which involved 40 Urhobos’ and 40Ibos’, aged 18years and above. Ear and fingerprint patterns were obtained with a Hewlett placard G4010 Photo scanner. Chi square test was used for categorical variables and a T test was used to compare means of dermatoglyphic variables. Statistical evaluation was done using SPSS 20 Software Version. Significance was accepted at  P<0.05 Findings showed that the ulnar loop was predominant while the radial loop was least observed in the studied population (70%,1.3%). Earprints that were common in the studied population were Type V and VI (7.5%, 38.8%). Type VII and VIII were frequent in the Ibos’ while Type I and III were perculiar with the Urhobos’ (X2 = 2.804; P = 0.903). The arches found on the left fingers were significantly  different among the two ethnic groups (p= 0.003). There was also a significant difference in fingerprint patterns observed on the left  middle and little finger alongside AFRC of the right and left little finger among the respective tribes (p=0.009; 0.012; 0.031; 0.007). Sexual dimorphism was observed in fingerprint patterns and TFRC among the Ibos’ (p=0.001; 0.001). Ear and fingerprint patterns vary among ethnic groups and can be used in criminology and forensic science. &nbsp

    Heavy metals, biomarkers of oxidative stress and changes in sperm function: A case-control study

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    Background: Heavy metal-induced oxidative stress has been implicated in abnormal sperm functions and male infertility. Objective: Serum and seminal levels of heavy metals and biomarkers of oxidative stress were compared in fertile and infertile men. Materials and Methods: A total of 130 men aged 20–60 yr comprising 30 azoospermic, 50 oligozoospermic, and 50 normozoospermic men were studied. Semen analysis was done by world health organization guidelines, biomarkers of oxidative stress (total antioxidant capacity (TAC), total plasma peroxidase (TPP), oxidative stress index (OSI), vitamin C (vit C) and nitric oxide (NO)) and fructose by colorimetry and serum and seminal heavy metals (zinc (Zn), selenium (Se), cadmium (Cd) and lead (Pb)) by atomic absorption spectrophotometry. Results: Azoospermic and oligozoospermic men had higher serum and seminal peroxides (TPP, p = 0.00), higher serum heavy metals (Zn, Se, Pb, and Cd (p = 0.01)) and lower sperm concentration, %motility, serum and seminal antioxidants (vit C, TAC, NO, GSH (p = 0.01)) compared to normozoospermic men. Higher seminal peroxides (TPP, p = 0.001), heavy metals (Pb and Cd (p = 0.03)) and lower sperm concentration, %motility, and seminal antioxidants (TAC and NO (p = 0.00)) were also observed in azoospermic men compared to oligozoospermic men. Negative correlations were observed between seminal fructose and seminal vit C (r = -0.535, p = 0.015), GSH (r =-0.734, p = 0.000), NO (r = -0.714, p = 0.000), Zn (r = -0.774, p = 0.000) and Se (r = -0.719, p = 0.000) only in azoospermic men. Conclusion: Elevated heavy metal levels, increased lipid peroxidation and antioxidant depletion is associated with abnormal sperm functions in men studied. Key words: Heavy metals, Antioxidants, Lipid peroxidation, Oxidative stress, Sperm function

    GlobTherm, a global database on thermal tolerances for aquatic and terrestrial organisms

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    CITATION: Bennett, J. M., et al. 2018. GlobTherm, a global database on thermal tolerances for aquatic and terrestrial organisms. Scientific Data, 5:180022, doi:10.1038/sdata.2018.22.The original publication is available at https://www.nature.comHow climate affects species distributions is a longstanding question receiving renewed interest owing to the need to predict the impacts of global warming on biodiversity. Is climate change forcing species to live near their critical thermal limits? Are these limits likely to change through natural selection? These and other important questions can be addressed with models relating geographical distributions of species with climate data, but inferences made with these models are highly contingent on non-climatic factors such as biotic interactions. Improved understanding of climate change effects on species will require extensive analysis of thermal physiological traits, but such data are both scarce and scattered. To overcome current limitations, we created the GlobTherm database. The database contains experimentally derived species’ thermal tolerance data currently comprising over 2,000 species of terrestrial, freshwater, intertidal and marine multicellular algae, plants, fungi, and animals. The GlobTherm database will be maintained and curated by iDiv with the aim to keep expanding it, and enable further investigations on the effects of climate on the distribution of life on Earth.https://www.nature.com/articles/sdata201822Publisher's versio

    GlobTherm, a global database on thermal tolerances for aquatic and terrestrial organisms

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    This database includes thermal tolerance metrics for 2,133 species of multicellular algae, plants, fungi, and animals in 43 classes, 203 orders and 525 families from both aquatic, and terrestrial realms, extracted from published studies. Abbreviated citations are included in the 'REF_min' and 'REF_max' variable in the data file. For full citations, please see the attached workbook, "References_1_09_2017.xlsx". The data are available in both Excel and CSV formats in the Dryad Digital Repository (doi:10.5061/dryad.1cv08). Updates to the data and metadata will be curated through the iDiv data portal (https://idata.idiv.de/). For example, in the future we plan to include interspecific variation in the dataset, to provide multiple estimates of thermal tolerance limits for a given species where estimates determined using the best possible methods will be more highly ranked

    Bringing traits back in the equation : A roadmap to understand species redistribution

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    Acknowledgments This research is a product of the BIOSHIFTS working group funded by the synthesis center (CESAB) of the French Foundation for Research on Biodiversity (FRB; www.fondationbiodiversite.fr) and the project FRAGSHIFTS funded by the Ministry of Ecological Transition (MTE), French Office for Biodiversity (OFB), and the French Foundation for Research on Biodiversity (FRB). We thank Holly Embke and two reviewers (including Tom Luhring) for their time and constructive comments that have improved the initial submission.Peer reviewe

    Knowledge, attitude, and perception of Nigerian-based physiotherapists on the utilization of musculoskeletal ultrasound imaging in the clinical management of musculoskeletal conditions

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    Background: Musculoskeletal ultrasound imaging (MSUI) is an efficient monitoring and re-evaluation tool used for the management of musculoskeletal conditions in several clinical domains. Its utilization among physiotherapists, particularly in African countries, is yet to be explored. Objective: This study investigated the knowledge, attitude, and perception of physiotherapists on the utilization of MSUI in the clinical management of musculoskeletal conditions. Methods: One hundred and ninety-two consenting Nigerian-based physiotherapists practicing in public and private health institutions participated in this cross-sectional survey. They responded to a three-sectioned structured questionnaire, investigating socio-demographic and occupational characteristics, knowledge, attitude, and utilization of MSUI for the management of musculoskeletal conditions. Data were analyzed with descriptive statistics and Pearson’s chi-square test at a significant level of 0.05. Results: The majority (79.2%) of the respondents had positive knowledge of MSUI and its benefits as a clinical modality for managing MSCs. However, only 4.2% had utilized MSUI in clinical practice. Non-utilization of MSUI was commonly attributed to a lack of access to MSUI (60.3%) and its unavailability in most diagnostic centers (42.9%). Almost all (99.0%) of them agreed to the necessity for increased availability of MSUI to physiotherapists for enhancement of physiotherapy interventions in the management of MSCs. Conclusion: Knowledge of MSUI among Nigerian-based physiotherapists is adequate, but its utilization as a clinical tool is poor. Improved availability of MSUI to physiotherapists is necessary as well as specialty training on the utilization and interpretation of MSUI

    Coupled Networks of Permanent Protected Areas and Dynamic Conservation Areas for Biodiversity Conservation Under Climate Change

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    The complexity of climate change impacts on ecological processes necessitates flexible and adaptive conservation strategies that cross traditional disciplines. Current strategies involving protected areas are predominantly fixed in space, and may on their own be inadequate under climate change. Here, we propose a novel approach to climate adaptation that combines permanent protected areas with temporary conservation areas to create flexible networks. Previous work has tended to consider permanent and dynamic protection as separate actions, but their integration could draw on the strengths of both approaches to improve biodiversity conservation and help manage for ecological uncertainty in the coming decades. As there are often time lags in the establishment of new permanent protected areas, the inclusion of dynamic conservation areas within permanent networks could provide critical transient protection to mitigate land-use changes and biodiversity redistributions. This integrated approach may be particularly useful in highly human-modified and fragmented landscapes where areas of conservation value are limited and long-term place-based protection is unfeasible. To determine when such an approach may be feasible, we propose the use of a decision framework. Under certain scenarios, these coupled networks have the potential to increase spatio-temporal network connectivity and help maintain biodiversity and ecological processes under climate change. Implementing these networks would require multidisciplinary scientific evidence, new policies, creative funding solutions, and broader acceptance of a dynamic approach to biodiversity conservation

    Coupled networks of permanent protected areas and dynamic conservation areas for biodiversity conservation under climate change

    Get PDF
    The complexity of climate change impacts on ecological processes necessitates flexible and adaptive conservation strategies that cross traditional disciplines. Current strategies involving protected areas are predominantly fixed in space, and may on their own be inadequate under climate change. Here, we propose a novel approach to climate adaptation that combines permanent protected areas with temporary conservation areas to create flexible networks. Previous work has tended to consider permanent and dynamic protection as separate actions, but their integration could draw on the strengths of both approaches to improve biodiversity conservation and help manage for ecological uncertainty in the coming decades. As there are often time lags in the establishment of new permanent protected areas, the inclusion of dynamic conservation areas within permanent networks could provide critical transient protection to mitigate land-use changes and biodiversity redistributions. This integrated approach may be particularly useful in highly human-modified and fragmented landscapes where areas of conservation value are limited and long-term place-based protection is unfeasible. To determine when such an approach may be feasible, we propose the use of a decision framework. Under certain scenarios, these coupled networks have the potential to increase spatio-temporal network connectivity and help maintain biodiversity and ecological processes under climate change. Implementing these networks would require multidisciplinary scientific evidence, new policies, creative funding solutions, and broader acceptance of a dynamic approach to biodiversity conservation

    Quantifying Rates of Evolutionary Adaptation in Response to Ocean Acidification

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    The global acidification of the earth's oceans is predicted to impact biodiversity via physiological effects impacting growth, survival, reproduction, and immunology, leading to changes in species abundances and global distributions. However, the degree to which these changes will play out critically depends on the evolutionary rate at which populations will respond to natural selection imposed by ocean acidification, which remains largely unquantified. Here we measure the potential for an evolutionary response to ocean acidification in larval development rate in two coastal invertebrates using a full-factorial breeding design. We show that the sea urchin species Strongylocentrotus franciscanus has vastly greater levels of phenotypic and genetic variation for larval size in future CO2 conditions compared to the mussel species Mytilus trossulus. Using these measures we demonstrate that S. franciscanus may have faster evolutionary responses within 50 years of the onset of predicted year-2100 CO2 conditions despite having lower population turnover rates. Our comparisons suggest that information on genetic variation, phenotypic variation, and key demographic parameters, may lend valuable insight into relative evolutionary potentials across a large number of species
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