Acrosin activity in spermatozoa of infertile Nigerian males     

M. A. Emokpae  P. O. Uadia 《Indian journal of clinical biochemistry : IJCB》2006,21(1):199-201

The objective of this study was to evaluate acrosin activity in spermatozoa of infertile Nigerian men and to compare with those of the fertile men. The acrosin activity was evaluated using the Acroscreen reagent kit. The acrosin activity of the fertile men was 40.7±5.2 mIU/10⁶ sperm (range 30.1–51.3) and those of the infertile men was 22.4±8.33 mIU/10⁶ sperm (range 5.7–39.1). The difference in the mean was statistically significant (P<0.001). There was a subpopulation of the infertile men who had their acrosin activity within normal range of the fertile men, 32.9±1.57 mIU/10⁶ sperm. But the difference in the mean was statistically significant (P<0.001). Acrosin activity decreased with increased morphological changes in the spermatozoa. It is concluded that acrosin activity in the infertile Nigerian men is significantly lower than that in the fertile men. Acrosin activity may also be affected by morphological changes in the spermatozoa.  相似文献   

pre-operative serum potassium levels and peri-operative outcomes in patients undergoing cardiac surgery     

O. P. Sanjay 《Indian journal of clinical biochemistry : IJCB》2004,19(1):40-44

Although potassium is critical for normal electro physiology, the associations between pre-operative serum potassium level and peri-operative adverse events such as arrhythmias in cardiac surgery have not been examined in detail. The objective of this study was to determine the prevalence of abnormal pre-operative serum potassium levels and whether such levels were associated with adverse peri-operative events in 50 patients undergoing coronary artery bypass grafting. Intra-operative and post-operative arrhythmias, the need for cardio-pulmonary resuscitation, cardiac death and death due to any cause prior to discharge from the post-operative intensive care unit were studied. The incidence for adverse outcome was 0.5% for death, 0.5% for cardiac death and 2% for cardio pulmonary resuscitation in patients with hypokalemia (serum potassium level <3.5 meq. L⁻¹). Hypokalemia was found to be a predictor of serious peri-operative (OR:2.2; 95% Cl: 1.2–4.1) and post-operative arrhythmias (OR: 1.7;95%Cl: 1.0–2.7). Pre-operative potassium repletion is low cost and low risk treatment measure and the data from this study suggests that screening and repletion be considered in patients scheduled for cardiac surgery.  相似文献   

Making a difference? Measuring the impact of an information literacy programme for pre-registration nursing students in the UK     

Craig A  Corrall S 《Health information and libraries journal》2007,24(2):118-127

OBJECTIVES: To investigate whether an information literacy programme for pre-registration nursing students at a UK higher education institution is effective in developing their skills and confidence: examines students' skill levels, factors affecting their confidence, and relationships between skills, confidence and demographic characteristics. METHODS: Quantitative and qualitative techniques were used: pre- and post-tests to measure changes in students' skills and self-assessed confidence levels after two key sessions in their first semester (n = 29); semi-structured interviews to explore factors affecting confidence (n = 5). RESULTS: Findings demonstrated positive impacts on skills and confidence. Key areas of skill development included: identifying journal articles, selecting search terms and evaluating website quality. Factors affecting confidence included: successful 'mastery' experiences in searching for information and the programme itself, especially small-group sessions, handouts and staff support. Evidence on links between skills, confidence and demographic factors was inconclusive. CONCLUSIONS: The study demonstrated the programme's effectiveness and identified areas for development, including the need to help students understand the relative merits of search engines and other sources. Evidence has contributed to a change in departmental policy, making attendance at sessions mandatory. Further studies have been recommended.  相似文献   

Using Research Based Assessment Tools in Professional Development in Current Electricity     

Ji Shen  Patrick C. Gibbons  John F. Wiegers  Ann P. McMahon 《Journal of Science Teacher Education》2007,18(3):431-459

We present a practical way of adapting and using four research-based assessments for different purposes in an electricity and magnetism course for K-8 science teachers. The course is designed to accomplish conceptual change toward accepted scientific conceptions as well as introducing teachers to materials and activities appropriate for their classrooms. Our data support that using the research-based tests to identify alternative conceptions and discuss test results with teachers is a promising way to use the knowledge of alternative conceptions in professional development. We also identify some mismatches between the research of conceptual change and its use in programs of professional development.

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Ji ShenEmail:

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How I teach evidence-based epidural information in a hospital and keep my job     

Tumblin A 《The Journal of perinatal education》2007,16(4):68-69

A childbirth educator reveals her dilemma in teaching evidence-based practice in today's high-tech birth climate. She focuses on strategies to use when sharing epidural information with expectant parents.  相似文献   

Walking backwards into the future: Indigenous wisdom within design education     

Nan O’Sullivan 《Educational Philosophy and Theory》2019,51(4):424-433

This research parallels Tongan academic Hūfanga ‘Okusitino Māhina’s assertions in the 1994 Contemporary Pacific article Our Sea of Islands, that ‘People are thought to walk forward into the past and walk backward into the future, both taking place in the present, where the past and the future are constantly mediated in the ever-transforming present’ alongside those of Professor Terry Irwin and fellow Transition Designers in which they discuss the use of Indigenous Wisdom to enable designing for the Long Now as defined by Brand in his 1999 book The Clock for the Long Now: Time and Responsibility. In the 2015 Transition Design Monograph Irwin asserts that, ‘Transition Design draws on knowledge and wisdom from the past to conceive solutions in the present with future generations in mind’. This paper draws on the pre-industrial wisdom of indigenous knowledge, specifically that of the Pacific regions, Moana, who have lived and designed sustainably in-place for generations to illustrate the value it holds for the formulation of sustainable and sustaining futures.  相似文献   

‘That's how it works here’: The place of religion in publicly managed second-level schools in Ireland     

O. McCormack  J. O'Flaherty  B. O'Reilly  J. Liston 《British Educational Research Journal》2019,45(1):161-180

This article problematises the place of religion within publicly managed Education and Training Board (ETB) schools in the Republic of Ireland. The study draws on interview data from 43 school personnel across 18 ETB second-level schools, as well as eight interviews with ETB Education/Chief Executive Officers. Having established the legal and historical contexts, the place of religion is explored from the perspective of school life and prescribed curriculum. Across the 18 schools, the prescribed curriculum for Religious Education did not take the form of ‘faith formation’. Rather, focus was placed on exploring all world religions. However, this compares with the role of religion within the life of the school; 14 of the 18 participating schools had religious dimensions as part of school life. Half of these schools (n = 7) were Designated Community Colleges, while the remainder were Non-Designated (n = 7). The religious dimension was always Catholic in nature. Bar a few exceptions, the role of religion within the life of the school remained largely unquestioned by school personnel. The article explores the findings in light of the legislative and historical contexts.  相似文献   

Changing roles in sustaining successful charter school leadership in high poverty schools: Voices from the field     

Maria Marsella Leahy  Rebecca Ann Shore 《Journal of School Choice》2019,13(2):255-277

Effective educational leadership is essential for the success of schools and ultimately student achievement. The impact of school leadership may be even more pronounced in charter schools. Due to current and unprecedented growth, unique design, and complexities of political, financial, and governance issues they face, there is a need for more highly qualified charter school leaders and perhaps even “differently” prepared leaders. In this qualitative study, the authors documented the characteristics and skills of two successful, sustained charter school leaders who retrospectively described their evolved and evolving roles over twenty five years. Each transformed high-poverty, low-performing schools with at-risk populations and led with vision, passion, and a relentless desire to positively influence their organizations and ultimately improve student success in their communities. Although many of their skills and characteristics fall within existing theories, such as situational leadership, transformational leadership, and distributive leadership, they embodied a level of dedication and commitment to the original communities in which they founded charters lasting over a quarter of a century. The findings suggest that founding a charter school and seeing it through to success over time may more closely resemble missionary work than traditional school leadership.  相似文献   

Let's Talk About Maths: The Role of Observed “Maths‐Talk” and Maths Provisions in Preschoolers' Numeracy     

Megan von Spreckelsen  Emma Dove  Ilse Coolen  Annelot Mills  Ann Dowker  Kathy Sylva  Daniel Ansari  Rebecca Merkley  Victoria Murphy  Gaia Scerif 《Mind, Brain, and Education》2019,13(4):326-340

Developmental cognitive neuroscience highlights the importance of interactions between children and their environment. As young children spend increasing time in childcare, it is key to investigate the impact of “maths‐talk” and maths provisions in preschools. Qualitative insights from early educators indicate a greater bias toward counting activities than would be expected given the Early Years curriculum. In addition, we quantified the observed breadth of preschool practitioners' maths language (e.g., place‐value language), setting‐based maths provisions (e.g., quality of maths‐related activities), and their relation with children's early numeracy skills. In settings with greater practitioners' breadth of maths language, children display greater cardinality skills although our data call for the further investigation of parental socioeconomic status and education. We conclude with a discussion on the need to operationalize children's maths learning environments as diversely as possible. Enriching practitioners' skill sets may be an effective and needed way of improving early maths outcomes.  相似文献   

Development and Implementation of the Inaugural Anatomy Education Research Institute (AERI 2017)     

Valerie Dean O’Loughlin  Polly R. Husmann  James J. Brokaw 《Anatomical sciences education》2019,12(2):181-190

Education research is increasingly being recognized as a legitimate route for faculty development in universities. However, many anatomy faculty lack the appropriate training and access to experienced mentors who can help them develop their own education research projects. Inspired by the American Physiological Society’s Institute for Teaching and Learning, the coauthors proposed and developed the inaugural Anatomy Education Research Institute (AERI 2017). Funded by an American Association of Anatomists Innovations grant, the five-day institute was held in Bloomington, Indiana in July 2017. The coauthors spent two years preparing the conference schedule, inviting speakers who could discuss education research topics and mentor applicants, reviewing applications, developing assessment instruments for the institute, and hosting the institute. A total of 62 registered participants (applicants and invited speakers) attended AERI 2017. Through a series of presentations and workshops, participants were introduced to many aspects of education research and the Scholarship of Teaching and Learning, including developing rigorous education research questions, determining appropriate methods to assess these questions, and searching the education research literature. Each day also included regular time devoted to work on their own education research project with help from more experienced mentors. Throughout the conference, participants were encouraged to post information on Twitter, using the hashtag #AERI2017. Participants had strong positive impressions of the conference and strongly requested future AERI conferences be held. Follow-up analyses will assess the institute in alignment with Kirkpatrick’s Four Levels of Evaluation Model, though preliminary evaluation indicates AERI 2017 met the original aims of the proposal.  相似文献