Skip to main content Accessibility help

We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.

Close cookie message
×
Home
  1. Home
  2. Search

Refine search

Refine search

Access:
Content type:
Publication date:
Apply
Subject: Show more
Journals Show more
Publishers: Show more
Societies Show more
Series: Show more
Collections: Show more

Actions for selected content:

Select all | Deselect all
  • View selected items
  • Export citations
  • Download PDF (zip)
  • Save to Kindle
  • Save to Dropbox
  • Save to Google Drive

Save Search

You can save your searches here and later view and run them again in "My saved searches".

Please provide a title, maximum of 40 characters.
Cancel
×

90 results

Page 1 of 5

  • Tolerance of southern highbush blueberry to 2,4-D choline postemergence-directed
  • Kira C. Sims, Katherine M. Jennings, David W. Monks, Wayne E. Mitchem, David L. Jordan, Mark Hoffmann
  • Journal: Weed Technology / Volume 36 / Issue 3 / June 2022
  • Published online by Cambridge University Press: 29 April 2022, pp. 409-413
  • Print publication: June 2022
    • Article
      • You have access
      • Open access
    • PDF
    • HTML
    • Export citation
  • View abstract

    Field studies were conducted on southern highbush blueberry in Elizabethtown and Rocky Point, NC, in 2019, 2020, and 2021 to determine tolerance to 2,4-D choline as a postemergence-directed application. In separate trials for younger and older bearing blueberry bushes, both 2,4-D choline rates and application timing were evaluated. Treatments included 2,4-D choline at 0, 0.53, 1.06, 1.60, and 2.13 kg ae ha–1 applied alone in winter during dormancy, and sequential treatments at 0.53 kg ae ha–1 followed by (fb) 0.53, 1.06 fb 1.06, 1.6 fb 1.6, or 2.13 fb 2.13 kg ae ha–1. The first application of the sequential treatments was applied in winter followed by another application in spring during early green fruit. Injury to blueberry from 2,4-D choline treatments was not observed for either maturity stage, and fruit yield was not affected by any of the treatments. Differences among treatments were not observed for fruit soluble solid content (SSC) in older bushes, or for fruit pH, SSC, and titratable acidity (TA) in younger bushes. In older bushes, fruit pH and TA had rate-by-timing interactions, and TA had a farm-year interaction with differences at Rocky Point in 2019 and Elizabethtown in 2020, but biologically no pattern was observed from the treatments.

  • Tolerance of plasticulture strawberry to 2,4-D choline applied to row middles
  • Kira C. Sims, Katherine M. Jennings, David W. Monks, David L. Jordan, Mark Hoffmann, Wayne E. Mitchem
  • Journal: Weed Technology / Volume 36 / Issue 3 / June 2022
  • Published online by Cambridge University Press: 13 April 2022, pp. 352-357
  • Print publication: June 2022
    • Article
      • You have access
      • Open access
    • PDF
    • HTML
    • Export citation
  • View abstract

    Field studies in strawberry grown on polyethylene-mulched raised beds were conducted from 2018 to 2019 and 2019 to 2020 in Clayton, NC, to determine ‘Camarosa’ and ‘Chandler’ strawberry tolerance to 2,4-D directed to the row middle between beds. Treatments included 2,4-D at 0, 0.53, 1.06, 1.60, and 2.13 kg ae ha−1 applied alone and sequential treatments (0.53 followed by [fb] 0.53 or 1.06 fb 1.06 kg ae ha−1). Initial treatments were applied in winter (December 2018 or January 2020) during vegetative growth, and sequential applications were applied in spring (April 2019 or March 2020) during reproductive growth. No differences among treatments were observed for visual foliage injury, strawberry crop canopy, fruit yield, and fruit quality (pH, titratable acidity, and soluble solid content).

  • 7 - The United States in an Age of Global Integration, 1865–1897
  • from Part I - Building and Resisting US Empire
  • Edited by Kristin Hoganson, University of Illinois, Urbana-Champaign, Jay Sexton, University of Missouri, Columbia
  • Book: The Cambridge History of America and the World
  • Published online: 12 November 2021
  • Print publication: 03 March 2022, pp 172-194
  • View extract

    Summary

    Two interrelated processes of integration conditioned the development of the United States in the late nineteenth century. The first was the incorporation of the West and South into a Union that had been transformed by the American Civil War. The second was the ongoing integration of the world economy. Both were products of broader globalization in this period, and both were uneven and contested. Americans did not call the shots about the nature, pace and extent of this globalization, though politicians sought whenever they could to harness them toward their own ends. The US economy quintupled in size as the population of the United States rapidly expanded, especially in the trans-Mississippi West, where the dispossession of Native Americans and the construction of transcontinental railroads attracted new settlers and brought new lands into the world economy. In this the United States was not exceptional.

  • Lived Experience of Emergency Health Care Utilization during the COVID-19 Pandemic: A Qualitative Study
  • Erin Smith, Michella Hill, Cameron Anderson, Moira Sim, Alecka Miles, David Reid, Brennen Mills
  • Journal: Prehospital and Disaster Medicine / Volume 36 / Issue 6 / December 2021
  • Published online by Cambridge University Press: 08 October 2021, pp. 691-696
  • Print publication: December 2021
  • View abstract
    Introduction:

    As the understanding of health care worker lived experience during coronavirus disease 2019 (COVID-19) grows, the experiences of those utilizing emergency health care services (EHS) during the pandemic are yet to be fully appreciated.

    Study Objective:

    The objective of this research was to explore lived experience of EHS utilization in Victoria, Australia during the COVID-19 pandemic from March 2020 through March 2021.

    Methods:

    An explorative qualitative design underpinned by a phenomenological approach was applied. Data were collected through semi-structured, in-depth interviews, which were transcribed verbatim and analyzed using Colaizzi’s approach.

    Results:

    Qualitative data were collected from 67 participants aged from 32 to 78-years-of-age (average age of 52). Just over one-half of the research participants were male (54%) and three-quarters lived in metropolitan regions (75%). Four key themes emerged from data analysis: (1) Concerns regarding exposure and infection delayed EHS utilization among participants with chronic health conditions; (2) Participants with acute health conditions expressed concern regarding the impact of COVID-19 on their care, but continued to access services as required; (3) Participants caring for people with sensory and developmental disabilities identified unique communication needs during interactions with EHS during the COVID-19 pandemic; communicating with emergency health care workers wearing personal protective equipment (PPE) was identified as a key challenge, with face masks reported as especially problematic for people who are deaf or hard-of-hearing; and (4) Children and older people also experienced communication challenges associated with PPE, and the need for connection with emergency health care workers was important for positive lived experience during interactions with EHS throughout the pandemic.

    Conclusion:

    This research provides an important insight into the lived experience of EHS utilization during the COVID-19 pandemic, a perspective currently lacking in the published peer-reviewed literature.

  • The long-term mental health impact of peacekeeping: prevalence and predictors of psychiatric disorder
  • David Forbes, Meaghan O'Donnell, Rachel M. Brand, Sam Korn, Mark Creamer, Alexander C. McFarlane, Malcolm R. Sim, Andrew B. Forbes, Graeme Hawthorne
  • Journal: BJPsych Open / Volume 2 / Issue 1 / January 2016
  • Published online by Cambridge University Press: 02 January 2018, pp. 32-37
    • Article
      • You have access
      • Open access
    • PDF
    • HTML
    • Export citation
  • View abstract
    Background

    The mental health outcomes of military personnel deployed on peacekeeping missions have been relatively neglected in the military mental health literature.

    Aims

    To assess the mental health impacts of peacekeeping deployments.

    Method

    In total, 1025 Australian peacekeepers were assessed for current and lifetime psychiatric diagnoses, service history and exposure to potentially traumatic events (PTEs). A matched Australian community sample was used as a comparator. Univariate and regression analyses were conducted to explore predictors of psychiatric diagnosis.

    Results

    Peacekeepers had significantly higher 12-month prevalence of post-traumatic stress disorder (16.8%), major depressive episode (7%), generalised anxiety disorder (4.7%), alcohol misuse (12%), alcohol dependence (11.3%) and suicidal ideation (10.7%) when compared with the civilian comparator. The presence of these psychiatric disorders was most strongly and consistently associated with exposure to PTEs.

    Conclusions

    Veteran peacekeepers had significant levels of psychiatric morbidity. Their needs, alongside those of combat veterans, should be recognised within military mental health initiatives.

  • Groupoid Fell bundles for product systems over quasi-lattice ordered groups
  • ADAM RENNIE, DAVID ROBERTSON, AIDAN SIMS
  • Journal: Mathematical Proceedings of the Cambridge Philosophical Society / Volume 163 / Issue 3 / November 2017
  • Published online by Cambridge University Press: 16 March 2017, pp. 561-580
  • Print publication: November 2017
  • View abstract

    Consider a product system over the positive cone of a quasi-lattice ordered group. We construct a Fell bundle over an associated groupoid so that the cross-sectional algebra of the bundle is isomorphic to the Nica–Toeplitz algebra of the product system. Under the additional hypothesis that the left actions in the product system are implemented by injective homomorphisms, we show that the cross-sectional algebra of the restriction of the bundle to a natural boundary subgroupoid coincides with the Cuntz–Nica–Pimsner algebra of the product system. We apply these results to improve on existing sufficient conditions for nuclearity of the Nica–Toeplitz algebra and the Cuntz–Nica–Pimsner algebra, and for the Cuntz–Nica–Pimsner algebra to coincide with its co-universal quotient.

  • Prevalence of reactive attachment disorder in a deprived population
  • Helen Minnis, Susan Macmillan, Rachel Pritchett, David Young, Brenda Wallace, John Butcher, Fiona Sim, Katie Baynham, Claire Davidson, Christopher Gillberg
  • Journal: The British Journal of Psychiatry / Volume 202 / Issue 5 / May 2013
  • Published online by Cambridge University Press: 02 January 2018, pp. 342-346
  • Print publication: May 2013
    • Article
      • You have access
    • PDF
    • HTML
    • Export citation
  • View abstract
    Background

    Reactive attachment disorder (RAD) is associated with early childhood maltreatment and has unknown population prevalence beyond infancy.

    Aims

    To estimate RAD prevalence in a deprived population of children.

    Method

    All 1646 children aged 6-8 years old in a deprived sector of an urban UK centre were screened for RAD symptoms. Parents of high and low scorers were interviewed using semi-structured interviews probing for psychopathology and individuals likely to have RAD were offered face-to-face assessment.

    Results

    Questionnaire data were available from 92.8% of teachers and 65.8% of parents. Assessments were conducted with 50% of those invited and missing data were imputed - based on the baseline data - for the rest. We calculated that there would be 23 children with definite RAD diagnoses, suggesting that the prevalence of RAD in this population was 1.40% (95% CI 0.94-2.10).

    Conclusions

    In this deprived general population, RAD was not rare.

  • Chapter Thirteen - Plant secondary metabolite polymorphisms and the extended chemical phenotype
  • Edited by Glenn R. Iason, Marcel Dicke, Wageningen Universiteit, The Netherlands, Susan E. Hartley, University of York
  • Book: The Ecology of Plant Secondary Metabolites
  • Published online: 05 August 2012
  • Print publication: 19 April 2012, pp 247-268
  • View extract

    Summary

    Introduction

    As it was originally proposed, the extended phenotype comprised ‘all effects of a gene upon the world’ (Dawkins, 1989) and portrayed how the effects of a gene borne by an organism influenced its biotic and abiotic environments. The consideration of indirect genetic effects, in which an organism’s phenotype becomes part of the selective environment of conspecifics (Wolf et al., 1998), was developed rigorously in the population genetics context and the concept subsequently extended to include effects on heterospecifics (Whitham et al., 2003). The extended phenotype concept has been adopted as a framework by some evolutionary biologists and ecologists to study the roles of plant secondary metabolites (PSMs) since Whitham et al. (2003) used heritable variation in tissue tannin concentrations among Populus species and hybrids to develop the concept of community and ecosystem genetics (Antonovics, 1992).

    Many studies of how genetically determined variation in plant traits, including PSMs, drive associated community phenotypes and processes, have been based on differences between hybrids (Dungey et al., 2000; Hochwender & Fritz, 2004; Bailey et al., Chapter 14). Fewer studies have investigated the effects on extended phenotypes of continuously varying PSMs or between known genotypes within a species (Whitham et al., 2006; Schweitzer et al., 2008; Barbour et al., 2009; O’Reilly-Wapstra et al., Chapter 2). A convenient approach to identification and utilisation of genotypic variation for the study of multiple effects of PSMs is provided by the use of genetic polymorphisms. A polymorphism can be defined as occurring when a trait such as a morphological or biochemical character exists in two or more distinct forms in a randomly mating population within a species (Ford, 1975). The approach is particularly useful in species that cannot be readily cloned. Here, we review examples of how intra-specific variation in a particular group of PSMs, the monoterpenes, has informed our understanding of how PSMs can play multiple ecological roles and mediate the extended phenotype of plants. The monoterpenes are a group of low-molecular-weight, volatile terpenoids which form a very diverse group in terms of number of compounds, structure and function (Gershenzon & Dudareva, 2007). We use variation within species which are polymorphic for concentrations or presence of monoterpenes to provide an insight into their ecological ramifications and larger-scale consequences, against the background of intra-specific variation in other traits.

  • Matthew's Use of Mark: Did Matthew Intend to Supplement or to Replace His Primary Source?*
  • David C. Sim
  • Journal: New Testament Studies / Volume 57 / Issue 2 / April 2011
  • Published online by Cambridge University Press: 04 March 2011, pp. 176-192
  • Print publication: April 2011
  • View abstract

    Most scholars acknowledge Matthew's debt to Mark in the composition of his own Gospel, and they are fully aware of his extensive redaction and expansion of this major source. Yet few scholars pose what is an obvious question that arises from these points: What was Matthew's intention for Mark once he had composed and circulated his own revised and enlarged account of Jesus' mission? Did he intend to supplement Mark, in which case he wished his readers to continue to consult Mark as well as his own narrative, or was it his intention to replace the earlier Gospel? It is argued in this study that the evidence suggests that Matthew viewed Mark as seriously flawed, and that he wrote his own Gospel to replace the inadequate Marcan account.

Page 1 of 5