51
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Donnellan F, Walker B, Enns R. Esophageal papillomatosis complicated by squamous cell carcinoma. Endoscopy 2012; 44 Suppl 2 UCTN:E110-1. [PMID: 22477170 DOI: 10.1055/s-0031-1291599] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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52
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Walker B. Enigma Number 1718. New Sci 2012. [DOI: 10.1016/s0262-4079(12)62567-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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53
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Kløverpris H, Harndahl M, Carlson J, Leslie A, van der Stok M, Huang G, Chen F, Riddell L, Steyn D, Goedhals D, van Vuuren C, Frater J, Walker B, Ndung'u' T, Buus S, Goulder P. HIV control through a single nucleotide on the HLA-I locus. Retrovirology 2012. [PMCID: PMC3441525 DOI: 10.1186/1742-4690-9-s2-o47] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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54
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Gaiha G, Anahtar M, Rossin E, Walker B. Determination of structural constraint within the HIV proteome through analysis of amino acid microenvironments. Retrovirology 2012. [PMCID: PMC3441488 DOI: 10.1186/1742-4690-9-s2-p349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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55
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Shasha D, Porichis F, Daniel K, Angiuli O, Kaufmann DE, Walker B. Comparable antiviral capacity but favorable in vitro survival of CD8s from elite controllers compared to untreated progressors. Retrovirology 2012. [PMCID: PMC3441482 DOI: 10.1186/1742-4690-9-s2-p286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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56
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Jackson AG, Kløverpris HN, Handley A, Hayes P, Gilmour J, Atkins M, Walker B, Ackland J, Sullivan M, Goulder P. A first-in-man, double blind, placebo controlled study of the candidate therapeutic vaccine Opal-HIV-Gag(c) in HIV infected patients receiving HAART. Retrovirology 2012. [PMCID: PMC3441710 DOI: 10.1186/1742-4690-9-s2-o54] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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57
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Kløverpris H, Jackson A, Handley A, Hayes P, Gilmour J, Atkins M, Walker B, Ackland J, Sullivan M, Goulder P. Immune response after vaccination of HIV infected individuals receiving HAART with overlapping gag peptides pulsed on autologous cells. Retrovirology 2012. [PMCID: PMC3441579 DOI: 10.1186/1742-4690-9-s2-p115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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58
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Naicker D, Julg B, McClurg C, Ghebremichael M, Porichis F, Zupkosky J, Jaggernath M, Mokgoro M, Goulder P, Walker B, Kaufmann D, Ndung'u T. Association of interleukin-10 promoter genetic variants with T-cell and B-cell activation in HIV-1 infection. Retrovirology 2012. [PMCID: PMC3441403 DOI: 10.1186/1742-4690-9-s2-p168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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59
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Walker B. Enigma Number 1709. New Sci 2012. [DOI: 10.1016/s0262-4079(12)62010-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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60
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Chia PL, Subbiah RN, Kuchar D, Walker B. Unusual adverse consequence of reverse ventricular remodelling following cardiac resynchronization therapy. Europace 2012; 14:1216-7. [DOI: 10.1093/europace/eur422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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61
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Chetty S, Porichis F, Govender P, Zupkosky J, Pillay M, Walker B, Ndung’u T, Kaufmann D, Kasprowicz V. Co-infection with Mycobacterium tuberculosis impairs HIV-specific CD8+ and CD4+ T cell functionality. Int J Infect Dis 2012. [DOI: 10.1016/j.ijid.2012.05.061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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62
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Periasamy K, Watson WS, Mohammed A, Murray H, Walker B, Patil S, Meek RMD. A randomised study of peri-prosthetic bone density after cemented versus trabecular fixation of a polyethylene acetabular component. ACTA ACUST UNITED AC 2011; 93:1033-44. [PMID: 21768625 DOI: 10.1302/0301-620x.93b8.26233] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The ideal acetabular component is characterised by reliable, long-term fixation with physiological loading of bone and a low rate of wear. Trabecular metal is a porous construct of tantalum which promotes bony ingrowth, has a modulus of elasticity similar to that of cancellous bone, and should be an excellent material for fixation. Between 2004 and 2006, 55 patients were randomised to receive either a cemented polyethylene or a monobloc trabecular metal acetabular component with a polyethylene articular surface. We measured the peri-prosthetic bone density around the acetabular components for up to two years using dual-energy x-ray absorptiometry. We found evidence that the cemented acetabular component loaded the acetabular bone centromedially whereas the trabecular metal monobloc loaded the lateral rim and behaved like a hemispherical rigid metal component with regard to loading of the acetabular bone. We suspect that this was due to the peripheral titanium rim used for the mechanism of insertion.
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63
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Steneck RS, Hughes TP, Cinner JE, Adger WN, Arnold SN, Berkes F, Boudreau SA, Brown K, Folke C, Gunderson L, Olsson P, Scheffer M, Stephenson E, Walker B, Wilson J, Worm B. Creation of a gilded trap by the high economic value of the Maine lobster fishery. CONSERVATION BIOLOGY : THE JOURNAL OF THE SOCIETY FOR CONSERVATION BIOLOGY 2011; 25:904-912. [PMID: 21797925 DOI: 10.1111/j.1523-1739.2011.01717.x] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Unsustainable fishing simplifies food chains and, as with aquaculture, can result in reliance on a few economically valuable species. This lack of diversity may increase risks of ecological and economic disruptions. Centuries of intense fishing have extirpated most apex predators in the Gulf of Maine (United States and Canada), effectively creating an American lobster (Homarus americanus) monoculture. Over the past 20 years, the economic diversity of marine resources harvested in Maine has declined by almost 70%. Today, over 80% of the value of Maine's fish and seafood landings is from highly abundant lobsters. Inflation-corrected income from lobsters in Maine has steadily increased by nearly 400% since 1985. Fisheries managers, policy makers, and fishers view this as a success. However, such lucrative monocultures increase the social and ecological consequences of future declines in lobsters. In southern New England, disease and stresses related to increases in ocean temperature resulted in more than a 70% decline in lobster abundance, prompting managers to propose closing that fishery. A similar collapse in Maine could fundamentally disrupt the social and economic foundation of its coast. We suggest the current success of Maine's lobster fishery is a gilded trap. Gilded traps are a type of social trap in which collective actions resulting from economically attractive opportunities outweigh concerns over associated social and ecological risks or consequences. Large financial gain creates a strong reinforcing feedback that deepens the trap. Avoiding or escaping gilded traps requires managing for increased biological and economic diversity. This is difficult to do prior to a crisis while financial incentives for maintaining the status quo are large. The long-term challenge is to shift fisheries management away from single species toward integrated social-ecological approaches that diversify local ecosystems, societies, and economies.
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64
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Walker B. Enigma Number 1661. New Sci 2011. [DOI: 10.1016/s0262-4079(11)62084-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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65
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Lu YT, Beldie L, Walker B, Richmond S, Middleton J. Parametric study of a Hill-type hyperelastic skeletal muscle model. Proc Inst Mech Eng H 2011; 225:437-47. [PMID: 21755774 DOI: 10.1177/2041303310392632] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Hill's one-dimensional three-element model has often been used for formulating a three-dimensional skeletal muscle constitutive model, which generally involves several material parameters. However, only few of these parameters have physical meanings and can be experimentally determined. In this paper, a parametric study of a Hill-type hyperelastic skeletal muscle model is performed. First, the Hill-type hyperelastic skeletal muscle model is formulated, containing 13 material parameters. The values or value ranges of these parameters are discussed. The muscle model is then used to predict the behaviour of New Zealand white rabbit hind leg muscle tibialis anterior and a sensitivity study of several parameters is performed. Results show that some parameters in the muscle model can be experimentally determined, some parameters have their own value ranges and the muscle model can predict the experimental data by tuning the parameters within their value ranges. The results from the sensitivity study can help understand how some parameters influence the total muscle stress.
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66
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Walker B. Enigma Number 1657. New Sci 2011. [DOI: 10.1016/s0262-4079(11)61828-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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67
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Martin L, Moffitt K, Elborn J, Walker B. 181* Development of a novel tool for the rapid detection of neutrophil elastase as a marker of inflammation within the clinic. J Cyst Fibros 2011. [DOI: 10.1016/s1569-1993(11)60197-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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68
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Walker B. Enigma Number 1649. New Sci 2011. [DOI: 10.1016/s0262-4079(11)61313-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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69
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Walker B. Enigma Number 1641. New Sci 2011. [DOI: 10.1016/s0262-4079(11)60799-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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70
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Liggett A, Crawford L, Walker B, Morris T, Irvine A. Methods for measuring proteasome activity: Current limitations and future developments. Leuk Res 2010; 34:1403-9. [DOI: 10.1016/j.leukres.2010.07.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2010] [Revised: 06/10/2010] [Accepted: 07/03/2010] [Indexed: 10/19/2022]
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71
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Walker B. Enigma Number 1621. New Sci 2010. [DOI: 10.1016/s0262-4079(10)62811-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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72
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Walker B. Enigma Number 1616. New Sci 2010. [DOI: 10.1016/s0262-4079(10)62462-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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73
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Walker B. Enigma Number 1612. New Sci 2010. [DOI: 10.1016/s0262-4079(10)62200-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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74
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Young P, Pearce C, Walker B, Beldie L, Cotton R, Bui Xuan V. Pressure analysis of head impact with and without helmet. Comput Methods Biomech Biomed Engin 2010. [DOI: 10.1080/10255842.2010.495880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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75
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