Now showing items 1100-1119 of 1452

  • The Q/U imaging experiment instrument 

    Biscoff, C.; Brizius, A.; Zwart, J.; Buder, I.; Chinone, Y.; Cleary, K.; Dumoulin, R.N.; Kusaka, A.; Monsalve, R.; Naess, S.K.; Newburgh, L.B.; Nixon, G.; Reeves, R.; Smith, K.M.; Vanderlinde, K.; Wehus, I.K.; Bogdan, M.; Bustos, R.; Church, S.E.; Davis, Robert; Dickenson, C.; Eriksen, H.K.; Gaier, T.; Gundersen, J.O.; Hasegawa, M.; Hazumi, M.; Holler, C.; Huffenberger, K.M.; Imbriale, W.A.; Ishidoshiro, K.; Jones, M.E.; Kangaslahti, P.; Kapner, D.J.; Lawrence, C.R.; Leitch, E.M.; Limon, M.; McMahon, J.J.; Miller, A.D.; Nagai, M.; Nguyen, H.; Pearson, T.J.; Piccirillo, L.; Radford, S.J.E.; Readhead, A.C.S.; Richards, J.L.; Samtleben, D.; Seiffert, M.; Shepherd, M.C.; Staggs, S.T.; Tajima, O.; Thompson, K.L.; Williamson, R.; Winstein, B.; Wollack, E.J. (The American Astronomical Society, 2013)
    The Q/U Imaging ExperimenT (QUIET) is designed to measure polarization in the cosmic microwave background, targeting the imprint of inflationary gravitational waves at large angular scales(∼1◦). Between 2008 October and ...
  • A qualitative meta-synthesis of facilitators and barriers to tuberculosis diagnosis and treatment in Nigeria 

    Zarowsky, C; Oga-Omenka, C; Wakdet, L (Springer Nature, 2021)
    : Despite progress in tuberculosis (TB) control globally, TB continues to be a leading cause of death from infectious diseases, claiming 1.2 million lives in 2018; 214,000 of these deaths were due to drug resistant strains. ...
  • A qualitative study of referring agents’ perceptions of access barriers to inpatient substance abuse treatment centres in the Western Cape 

    Isobell, Deborah; Kamaloodien, Kamal; Savahl, Shazly (BioMed Central, 2015)
    Background: Despite empirical support for the individual and public health benefits of treating substance use disorders (SUDs) , access to these services is impeded by several barriers. Although many studies on access ...
  • Quantification and identification of sperm subpopulations using computer-aided sperm analysis and species-specific cut-off values for swimming speed 

    Maree, Liana; van der Horst, Gerhard (Taylor & Francis, 2013)
    Motility is an essential characteristic of all fl agellated spermatozoa and assessment of this parameter is one criterion for most semen or sperm evaluations. Computer-aided sperm analysis (CASA) can be used to measure ...
  • Quantification of radicals generated in a sonicator 

    Fatoba, Ojo O.; Badmus, Kassim Olasunkanmi; Tijani, Jimoh O.; Eze, C.P. (Iranian Chemical Society, 2016)
    The hydroxyl radical (OH•) is a powerful oxidant produced as a consequence of cavitation in water. It can react nonspecifically in breaking down persistent organic pollutants in water into their mineral form. It can also ...
  • Quantitative assessment of heavy metal effects on sperm function using computer‐aided sperm analysis and cytotoxicity assays 

    Hardneck, Farren; Israel, Gadieja; Pool, Edmund; Maree, Liana (Wiley, 2018)
    One known environmental risk factor impacting on human reproduction is heavy metal pollution. Although some metals (e.g., Cu, Se and Zn) have protective effects on the male reproductive system in low doses, heavy metals ...
  • A quantitative in-depth analysis of the prototype sdB+BD system SDSS J08205+0008 revisited in the Gaia era 

    Kilkenny, D; Schaffenroth, V; Casewell, S.L (Oxford University Press, 2021)
    Subdwarf B stars are core-helium-burning stars located on the extreme horizontal branch (EHB). Extensive mass loss on the red giant branch is necessary to form them. It has been proposed that substellar companions could ...
  • Quantitative study on the changes of Karst groundwater level and hydrochemistry in Jinci spring catchment, Shanxi, China 

    Wang, Zhaoliang; Zhang, Zhixiang; Xu, Yongxin (Springer Nature, 2020)
    Since Jinci spring ceased to flow on April 30, 1994, it has never been reflowed, which seriously affects the sustainable utilization of karst groundwater. The purpose of this paper is to provide the basis for the reflow ...
  • Quasi-uniform structures determined by closure operators 

    Holgate, D; Iragi, M (Elsevier, 2021)
    We demonstrate a one-to-one correspondence between idempotent closure operators and the so-called saturated quasi-uniform structures on a category C. Not only this result allows to obtain a categorical counterpart P of the ...
  • A query-based SMS translation in information access system 

    Adesina, Ademola Olusola; Agbele, Kehinde K.; Azeez, Nureni A.; Abidoye, Ademola P. (Blue Eyes Intelligence Engineering & Sciences Publication Pvt. Ltd., 2011)
    Mobile technology has contributed to the evolution of several media of communication such as chats, emails and short message service (SMS) text. This has significantly influenced the traditional standard way of expressing ...
  • Quest for the best—a move to anatomical endoscopic enucleation of the prostate 

    Henkel, Ralf; Cho, Chaklam; Teoh, Jeremy Yuen Chun (Wiley-Blackwell, 2020)
    The history of surgical enucleation for the treatment of lower urinary tract symptoms caused by benign prostatic enlargement dates back more than 100 years (Freyer, 1919). Open prostatec-tomy (OP) is an invasive procedure ...
  • Radiations and male fertility 

    Kesari, Kavindra Kumar; Agarwal, Ashok; Henkel, Ralf (Springer Nature, 2018)
    During recent years, an increasing percentage of male infertility has to be attributed to an array of environmental, health and lifestyle factors. Male infertility is likely to be affected by the intense exposure to heat ...
  • Radio continuum surveys with square kilometre array pathfinders 

    Norris, Ray P.; Afonso, J.; Bacon, David; Cress, Catherine (Cambridge University Press, 2013)
    In the lead-up to the Square Kilometre Array (SKA) project, several next-generation radio telescopes and upgrades are already being built around the world. These include APERTIF (The Netherlands), ASKAP (Australia), ...
  • Radio-loud active calactic nucleus: is there a link between luminosity and cluster environment? 

    Ineson, J.; Croston, J. H.; Jarvis, Matt; Hardcastle, M.J.; Evans, D. A.; Kraft, R. P. (American Physical Society, 2013)
    We present here the first results from the Chandra ERA (Environments of Radio-loud AGN) Large Project, characterizing the cluster environments of a sample of 26 radio-loud active galactic nuclei (AGNs) at z ∼ 0.5 that ...
  • Radon-222 measurements at Cape Point: A characterization of a 15-year time series 

    Botha, R.; Labuschagne, C.; Williams, A.G.; Bosman, G.; Brunke, E.-G.; Rossouw, A.; Lindsay, R. (National Association for Clean Air, 2018)
    The Cape Point (CPT) Global Atmosphere Watch (GAW) research station have been monitoring climatically significant trace gases for four decades. Among these is radon, a naturally occurring noble gas with a large continental ...
  • Rapid assessment of tissue nitrogen in cultivated Gracilaria gracilis (Rhodophyta) and Ulva lactuca (Chlorophyta) 

    Robertson-Andersson, Deborah; Wilson, D.T.; Bolton, John J.; Anderson, Robert J.; Maneveldt, Gavin (NISC, 2009)
    Tissue nitrogen content and thallus colour were quantified using a rapid assessment method based on the Pantone® matt uncoated formula guide for raft-cultivated Gracilaria gracilis Steentoft Irvine et Farnham at Saldanha ...
  • Rare fungal species isolated from Libyan diabetic patients 

    Esmaio, Mustafa; Abrantes, Pedro Miguel dos Santos; Africa, Charlene W.J. (Infection Control Africa Network (ICAN), 2016)
    BACKGROUND AND OBJECTIVES: The emerging resistance of Candida species to antifungals routinely used to treat candidiasis in HIV patients and in patients with diabetes mellitus (DM) has resulted in the frequent isolation ...
  • A re-assessment of the nearest neighbour alignment of the X-ray isophotes of galaxy clusters 

    Koen, Chris; Lombard, Fred (Oxford University Press, 2006)
    Alignment is defined as the tendency of the distribution of pointing angles between the major axes of clusters and their nearest neighbours to be more concentrated towards small values for small nearest neighbour distances, ...
  • Re-engineering of South Africa’s primary health care system: where is the pharmacist? 

    Bheekie, Angeni; Bradley, Hazel A. (South African Academy of Family Physicians, 2016)
    South Africa’s transition towards a district-based health system (DHS) aims to offer health promotion and prevention services at community level, through re-engineered primary health care (PHC) services. Along with pharmacy ...
  • Reactive oxygen species and male reproductive hormones 

    Darbandi, Mahsa; Darbandi, Sara; Agarwal, Ashok; Sengupta, Pallav; Durairajanayagam, Damayanthi; Henkel, Ralf; Sadeghi, Mohammad Reza (BMC, 2018)
    Reports of the increasing incidence of male infertility paired with decreasing semen quality have triggered studies on the effects of lifestyle and environmental factors on the male reproductive potential. There are ...