37 results on '"Sam I"'
Search Results
2. Soft shape-programmable surfaces by fast electromagnetic actuation of liquid metal networks
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Xinchen Ni, Haiwen Luan, Jin-Tae Kim, Sam I. Rogge, Yun Bai, Jean Won Kwak, Shangliangzi Liu, Da Som Yang, Shuo Li, Shupeng Li, Zhengwei Li, Yamin Zhang, Changsheng Wu, Xiaoyue Ni, Yonggang Huang, Heling Wang, and John A. Rogers
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Science - Abstract
Low modulus materials that can change shape in response to external stimuli are promising for a wide range of applications. The authors here introduce a shape-reprogrammable construct, based on liquid metal microfluidic networks and electromagnetic actuation, that supports a unique collection of capabilities.
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- 2022
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3. ATP binding by an F1Fo ATP synthase ε subunit is pH dependent, suggesting a diversity of ε subunit functional regulation in bacteria
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Alexander Krah, Timothy Vogelaar, Sam I. de Jong, Jolyon K. Claridge, Peter J. Bond, and Duncan G. G. McMillan
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F1Fo ATP synthase ,regulation-physiological ,alkaliphile bacteria ,aerobe ,polyextreme environments ,Biology (General) ,QH301-705.5 - Abstract
It is a conjecture that the ε subunit regulates ATP hydrolytic function of the F1Fo ATP synthase in bacteria. This has been proposed by the ε subunit taking an extended conformation, with a terminal helix probing into the central architecture of the hexameric catalytic domain, preventing ATP hydrolysis. The ε subunit takes a contracted conformation when bound to ATP, thus would not interfere with catalysis. A recent crystallographic study has disputed this; the Caldalkalibacillus thermarum TA2.A1 F1Fo ATP synthase cannot natively hydrolyse ATP, yet studies have demonstrated that the loss of the ε subunit terminal helix results in an ATP synthase capable of ATP hydrolysis, supporting ε subunit function. Analysis of sequence and crystallographic data of the C. thermarum F1Fo ATP synthase revealed two unique histidine residues. Molecular dynamics simulations suggested that the protonation state of these residues may influence ATP binding site stability. Yet these residues lie outside the ATP/Mg2+ binding site of the ε subunit. We then probed the effect of pH on the ATP binding affinity of the ε subunit from the C. thermarum F1Fo ATP synthase at various physiologically relevant pH values. We show that binding affinity changes 5.9 fold between pH 7.0, where binding is weakest, to pH 8.5 where it is strongest. Since the C. thermarum cytoplasm is pH 8.0 when it grows optimally, this correlates to the ε subunit being down due to ATP/Mg2+ affinity, and not being involved in blocking ATP hydrolysis. Here, we have experimentally correlated that the pH of the bacterial cytoplasm is of critical importance for ε subunit ATP affinity regulated by second-shell residues thus the function of the ε subunit changes with growth conditions.
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- 2023
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4. Prevalence and possible causes of anemia in the elderly: a cross-sectional analysis of a large European university hospital cohort
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Bach V, Schruckmayer G, Sam I, Kemmler G, and Stauder R
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Anemia ,elderly ,anemia prevalence ,causes of anemia ,MDS ,Geriatrics ,RC952-954.6 - Abstract
Veronika Bach,1 Guenter Schruckmayer,1 Ines Sam,1 Georg Kemmler,2 Reinhard Stauder11Department of Internal Medicine V (Hematology and Oncology), 2Department of Biological Psychiatry, Innsbruck Medical University, Innsbruck, AustriaBackground: Anemia in later life is associated with increased morbidity and mortality. The purpose of this study was to evaluate the prevalence and possible causes of anemia in the elderly in a well defined hospital cohort.Methods: Participants in this cross-sectional, retrospective analysis included all inpatients and outpatients aged ≥64 years with complete blood counts treated at Innsbruck Medical University Hospital between October 1, 2004 and September 29, 2005 (n=19,758, median age 73 years).Results: According to World Health Organization criteria, 21.1% of these patients were anemic, ie, 30.7% and 37.0% at 80+ years and 90+ years, respectively. The prevalence of anemia was significantly correlated with advanced age (r=0.21; P
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- 2014
5. Ebola Hemorrhagic Fever Associated with Novel Virus Strain, Uganda, 2007–2008
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Joseph F. Wamala, Luswa Lukwago, Mugagga Malimbo, Patrick Nguku, Zabulon Yoti, Monica Musenero, Jackson Amone, William Mbabazi, Miriam Nanyunja, Sam Zaramba, Alex Opio, Julius J. Lutwama, Ambrose O. Talisuna, and Sam I. Okware
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Ebola virus ,Ebola hemorrhagic fever ,hemorrhagic fever ,filovirus ,viruses ,research ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
During August 2007–February 2008, the novel Bundibugyo ebolavirus species was identified during an outbreak of Ebola viral hemorrhagic fever in Bundibugyo district, western Uganda. To characterize the outbreak as a requisite for determining response, we instituted a case-series investigation. We identified 192 suspected cases, of which 42 (22%) were laboratory positive for the novel species; 74 (38%) were probable, and 77 (40%) were negative. Laboratory confirmation lagged behind outbreak verification by 3 months. Bundibugyo ebolavirus was less fatal (case-fatality rate 34%) than Ebola viruses that had caused previous outbreaks in the region, and most transmission was associated with handling of dead persons without appropriate protection (adjusted odds ratio 3.83, 95% confidence interval 1.78–8.23). Our study highlights the need for maintaining a high index of suspicion for viral hemorrhagic fevers among healthcare workers, building local capacity for laboratory confirmation of viral hemorrhagic fevers, and institutionalizing standard precautions.
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- 2010
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6. Epidemiology and seasonality of respiratory viral infections in hospitalized children in Kuala Lumpur, Malaysia: a retrospective study of 27 years
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Khor Chee-Sieng, Sam I-Ching, Hooi Poh-Sim, Quek Kia-Fatt, and Chan Yoke-Fun
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Pediatrics ,RJ1-570 - Abstract
Abstract Background Viral respiratory tract infections (RTI) are relatively understudied in Southeast Asian tropical countries. In temperate countries, seasonal activity of respiratory viruses has been reported, particularly in association with temperature, while inconsistent correlation of respiratory viral activity with humidity and rain is found in tropical countries. A retrospective study was performed from 1982-2008 to investigate the viral etiology of children (≤ 5 years old) admitted with RTI in a tertiary hospital in Kuala Lumpur, Malaysia. Methods A total of 10269 respiratory samples from all children ≤ 5 years old received at the hospital's diagnostic virology laboratory between 1982-2008 were included in the study. Immunofluorescence staining (for respiratory syncytial virus (RSV), influenza A and B, parainfluenza types 1-3, and adenovirus) and virus isolation were performed. The yearly hospitalization rates and annual patterns of laboratory-confirmed viral RTIs were determined. Univariate ANOVA was used to analyse the demographic parameters of cases. Multiple regression and Spearman's rank correlation were used to analyse the correlation between RSV cases and meteorological parameters. Results A total of 2708 cases were laboratory-confirmed using immunofluorescence assays and viral cultures, with the most commonly detected being RSV (1913, 70.6%), parainfluenza viruses (357, 13.2%), influenza viruses (297, 11.0%), and adenovirus (141, 5.2%). Children infected with RSV were significantly younger, and children infected with influenza viruses were significantly older. The four main viruses caused disease throughout the year, with a seasonal peak observed for RSV in September-December. Monthly RSV cases were directly correlated with rain days, and inversely correlated with relative humidity and temperature. Conclusion Viral RTIs, particularly due to RSV, are commonly detected in respiratory samples from hospitalized children in Kuala Lumpur, Malaysia. As in temperate countries, RSV infection in tropical Malaysia also caused seasonal yearly epidemics, and this has implications for prophylaxis and vaccination programmes.
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- 2012
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7. Health-related quality of life and associated factors among people living with HIV/AIDS in Lagos, Nigeria
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Temitope S. Oladejo, Hellen Myezwa, Adedayo T. Ajidahun, and Sam Ibeneme
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health-related quality of life ,hiv ,nigeria ,associated factors ,anti-retroviral therapy ,Medicine ,Public aspects of medicine ,RA1-1270 - Abstract
Background: Although people living with HIV (PLWH) now have a longer life expectancy due to antiretroviral therapy, several factors impact their health-related quality of life (HRQoL). Understanding the dimensions and determinants of HRQoL among PLWH is crucial to developing solutions to improve their overall wellbeing. Aim: This research aimed to explore the HRQoL and its associated factors among PLWH in Lagos, Nigeria. Setting: Seven HIV testing and treatment centres in Lagos. Methods: A cross-sectional survey was conducted with 385 participants. Socio-demographic and HRQoL data were obtained using questionnaires and the Medical Outcomes Study HIV Health Survey (MOS-HIV). Logistic regression models were used to identify variables that were associated with quality of life. Results: The physical health summary and mental health summary scores measured by the MOS-HIV were 54.2 ± 5.3 and 56.3 ± 6.7, respectively. Being married, having higher levels of education, shorter duration of HIV and higher income levels were significantly associated with better HRQoL. The duration of HIV was found to have an inversely proportional influence on the quality of life of PLWH, both in physical health (χ2 = 9.477, p = 0.009) and mental health (χ2 = 11.88, p = 0.004) dimensions. Conclusion: The HRQoL of PLWH in Lagos, Nigeria was relatively low. Education, duration of HIV, marital status and income level are predictors of HRQoL. Contribution: This study is valuable for healthcare professionals and policymakers, providing them with essential information to tailor interventions and allocate resources effectively to improve the overall wellbeing of PLWH in Nigeria.
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- 2024
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8. Prevalence and predictors of HIV-related disability among people living with HIV in Nigeria
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Temitope S. Oladejo, Hellen Myezwa, Adedayo T. Ajidahun, and Sam Ibeneme
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hiv ,disability ,activities of daily living ,health-related quality of life ,prevalence ,predictors. ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Background: People living with human immunodeficiency virus (PLWH) live longer, but experience human immunodeficiency virus (HIV)-related comorbidities and disabilities that lower their quality of life. Understanding the prevalence, risk factors, and disability patterns is crucial for tailored interventions. Objectives: To explore the prevalence and predictors of HIV-related disability among PLWH in Nigeria. Method: This cross-sectional survey involved 385 PLWH, exploring demographic data, HIV history, recent symptoms, disability (measured by the WHO Disability Assessment Schedule–WHODAS 2.0). Descriptive statistics summarised the data, all variables were entered into univariate and multivariate regression models. IBM SPSS 25® was used for all analyses at a 95% confidence level. Results: The prevalence of disability among PLWH was 39.5%, the mean age was 42.2 ± 10.43 years, and 73% of the participants were females. Factors significantly associated with disability were marital status (p = 0.009) and level of education (p = 0.001). Conclusion: The study reveals a prevalence of disability (39.5%) among PLWH on antiretroviral therapy (ART), emphasising the need for tailored interventions considering socio-demographic factors. Continuous screening, risk identification, and effective management strategies are imperative, recognising disability as an indicator of health and quality of life. Clinical implications: With PLWH experiencing increased life expectancy, the study underscores the need for an informed patient-centred approach to care, recognising the specific challenges faced by PLWH in Nigeria and guiding the development of targeted interventions to enhance both functional outcomes and overall well-being.
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- 2024
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9. Genuine Security for Whom?: Militourism and Violence Against the Feminine in Hawaiʻi and Asia and the Pacific
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Nik Cristobal, Sam Ikehara, ʻIhilani Lasconia, and Hina Kaʻōpua-Canonigo
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Missing & Murdered Native Hawaiian Women ,militourism ,Native Americans ,gender-based violence ,Asia and the Pacific ,transnational feminism ,Social Sciences ,Special aspects of education ,LC8-6691 - Abstract
Assaults on ʻāina (land; that which feeds) are assaults on wāhine (women). Violence toward wāhine ʻōiwi (Native Hawaiian women/feminine people) and the ʻāina is discussed through the context of the Missing and Murdered Native Hawaiian Women, Girls, Māhū (MMNHWGM) movement and its relation to militourism. Militourism is used to draw parallels between the violence experienced by wāhine ʻōiwi in Hawaiʻi and women in the Philippines and across Asia and the Pacific. The concept of “genuine security” is addressed as a step toward sovereignty and reducing violence against wāhine and ʻāina. Reflective solutions to the violent impacts of militourism are offered through the frame of radical healing.
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- 2024
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10. Introduction to Special Issue Expanding Landscapes of Academic Writing in Academia
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Vera E. Woloshyn, Sam Illingworth, and Snežana Obradović-Ratković
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Education - Abstract
Academic writing is essential for disciplinary learning, academic success, knowledge creation, social status, and career advancement within academia (Fang, 2021). Academic research, writing, and publishing form the foundations of the majority of academic positions and remain primary considerations for hiring, renewal, promotion, and tenure in most higher education institutions (Ratković et al., 2019; Rawat & Meena, 2014). Early-career researchers must establish a significant track record of research, including publishing in high-impact journals (Couch, 2020). In graduate programs, academic writing competencies are critical for student success, with doctoral students often led to believe that they must be prolific academic writers to gain entry and advancement within academia (Mandke, 2019).
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- 2024
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11. Monitoring the Effect of Weed Encroachment on Cattle Behavior in Grazing Systems Using GPS Tracking Collars
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Igor L. Bretas, Jose C. B. Dubeux, Priscila J. R. Cruz, Luana M. D. Queiroz, Martin Ruiz-Moreno, Colt Knight, Scott Flynn, Sam Ingram, Jose D. Pereira Neto, Kenneth T. Oduor, Daniele R. S. Loures, Sabina F. Novo, Kevin R. Trumpp, Javier P. Acuña, and Marilia A. Bernardini
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animal activity ,geographic information system ,global navigation satellite system ,grasslands ,livestock monitoring ,weed management ,Veterinary medicine ,SF600-1100 ,Zoology ,QL1-991 - Abstract
Weed encroachment on grasslands can negatively affect herbage allowance and animal behavior, impacting livestock production. We used low-cost GPS collars fitted to twenty-four Angus crossbred steers to evaluate the effects of different levels of weed encroachment on animal activities and spatial distribution. The experiment was established with a randomized complete block design, with three treatments and four blocks. The treatments were paddocks free of weeds (weed-free), paddocks with weeds established in alternated strips (weed-strips), and paddocks with weeds spread throughout the entire area (weed-infested). Animals in weed-infested paddocks had reduced resting time and increased grazing time, distance traveled, and rate of travel (p < 0.05) compared to animals in weed-free paddocks. The spatial distribution of the animals was consistently greater in weed-free paddocks than in weed-strips or weed-infested areas. The effects of weed encroachment on animal activities were minimized after weed senescence at the end of the growing season. Pasture weed encroachment affected cattle behavior and their spatial distribution across the pasture, potentially impacting animal welfare. Further long-term studies are encouraged to evaluate the impacts of weed encroachment on animal performance and to quantify the effects of behavioral changes on animal energy balance.
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- 2023
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12. A Black Hole Kicked at Birth: MAXI J1305-704
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Chase Kimball, Sam Imperato, Vicky Kalogera, Kyle A. Rocha, Zoheyr Doctor, Jeff J. Andrews, Aaron Dotter, Emmanouil Zapartas, Simone S. Bavera, Konstantinos Kovlakas, Tassos Fragos, Philipp M. Srivastava, Devina Misra, Meng Sun, and Zepei Xing
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Astrophysical black holes ,Low-mass x-ray binary stars ,Supernovae ,Astrophysics ,QB460-466 - Abstract
When a compact object is formed in a binary, any mass lost during core collapse will impart a kick on the binary’s center of mass. Asymmetries in this mass loss or neutrino emission would impart an additional natal kick on the remnant black hole or neutron star, whether it was formed in a binary or in isolation. While it is well established that neutron stars receive natal kicks upon formation, it is unclear whether black holes do as well. Here, we consider the low-mass X-ray binary MAXI J1305-704, which has been reported to have a space velocity ≳200 km s ^−1 . In addition to integrating its trajectory to infer its velocity upon formation of its black hole, we account for recent estimates of its period, black hole mass, mass ratio, and donor effective temperature from photometric and spectroscopic observations. We find that if MAXI J1305-704 formed via isolated binary evolution in the thick Galactic disk, then the supernova that formed its black hole imparted a natal kick of at least 70 km s ^−1 while ejecting less than ≃1 M _⊙ with 95% confidence assuming uninformative priors on mass loss and natal kick velocity.
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- 2023
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13. Education in a warming world: Trends, opportunities and pitfalls for institutes of higher education
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Orla Kelly, Sam Illingworth, Fabrizio Butera, Vaille Dawson, Peta White, Mindy Blaise, Pim Martens, Geertje Schuitema, Maud Huynen, Susan Bailey, and Sian Cowman
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climate change ,education ,sustainability education ,sustainable universities ,sustainability challenges ,sustainable organizations ,Economic theory. Demography ,HB1-3840 - Abstract
Higher education institutes (HEI) face considerable challenges in navigating how to respond to the escalating and intertwined socio-ecological sustainability crises. Many dedicated individuals working in the sector are already driving meaningful action through rigorous research, teaching, knowledge sharing, and public engagement, while there is a growing consensus that sector-wide change is needed to ensure that aspirational declarations and positive individual actions translate into sustainable and transformative change. This article seeks to contribute to such efforts by illustrating a number of trends, examples, and reflections on how third-level educational institutes can act sustainably. We highlight the potential of five strategies HEI could employ to support the creation of a more sustainable future namely, (i) innovative approaches to climate change education; (ii) research agendas for societal transformations; (iii) providing climate change education for professional development; (iv) supporting public intellectuals; and (iv) investing in whole-systems approaches to greening the campus. The insights are the product of an interdisciplinary working group with members from across Europe, Australia, and the UK. These international examples provide insight and a sense of possibility for future application.
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- 2022
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14. Evidence that digital game players neglect age classification systems when deciding which games to play
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Ross Hollett, Sian Tomkinson, Sam Illingworth, Brad Power, and Tauel Harper
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Medicine ,Science - Abstract
This article considers players’ experiences seeking out new games to play, and their use of the Australian National Classification Scheme in doing so. The global video game industry is booming, with hundreds of games being released each month across numerous platforms. As a result, players have an unprecedented number of games available when choosing what games to purchase. However, a number of confounding issues around the emergent content of games and the subjective nature of game reviewing makes it difficult to relate what kinds of experiences a given game will facilitate. In this study, we surveyed game players in order to find their game platform and acquisition preferences; strategies and experiences when choosing games; and attitudes towards classification systems. Our findings suggest that players find it difficult to choose what games to purchase, and that existing classification systems are mostly only beneficial when choosing games for minors.
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- 2022
15. Evidence that digital game players neglect age classification systems when deciding which games to play.
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Ross Hollett, Sian Tomkinson, Sam Illingworth, Brad Power, and Tauel Harper
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Medicine ,Science - Abstract
This article considers players' experiences seeking out new games to play, and their use of the Australian National Classification Scheme in doing so. The global video game industry is booming, with hundreds of games being released each month across numerous platforms. As a result, players have an unprecedented number of games available when choosing what games to purchase. However, a number of confounding issues around the emergent content of games and the subjective nature of game reviewing makes it difficult to relate what kinds of experiences a given game will facilitate. In this study, we surveyed game players in order to find their game platform and acquisition preferences; strategies and experiences when choosing games; and attitudes towards classification systems. Our findings suggest that players find it difficult to choose what games to purchase, and that existing classification systems are mostly only beneficial when choosing games for minors.
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- 2022
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16. Ten simple rules for designing analogue science games
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Sam Illingworth and Paul Wake
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Biology (General) ,QH301-705.5 - Published
- 2021
17. Ten simple rules for designing analogue science games.
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Sam Illingworth and Paul Wake
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Biology (General) ,QH301-705.5 - Published
- 2021
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18. Competition and specialization in an African forest carnivore community
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David R. Mills, Emmanuel Do Linh San, Hugh Robinson, Sam Isoke, Rob Slotow, and Luke Hunter
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avoidance ,interference ,niche ,occupancy ,small carnivore ,temporal ,Ecology ,QH540-549.5 - Abstract
Abstract Globally, human activities have led to the impoverishment of species assemblages and the disruption of ecosystem function. Determining whether this poses a threat to future ecosystem stability necessitates a thorough understanding of mechanisms underpinning community assembly and niche selection. Here, we tested for niche segregation within an African small carnivore community in Kibale National Park, Uganda. We used occupancy modeling based on systematic camera trap surveys and fine‐scale habitat measures, to identify opposing preferences between closely related species (cats, genets, and mongooses). We modeled diel activity patterns using kernel density functions and calculated the overlap of activity periods between related species. We also used co‐occupancy modeling and activity overlap analyses to test whether African golden cats Caracal aurata influenced the smaller carnivores along the spatial and/or temporal axes. There was some evidence that related species segregated habitat and activity patterns. Specialization was particularly strong among forest species. The cats and genets partitioned habitat, while the mongooses partitioned both habitat and activity period. We found little evidence for interference competition between African golden cats and other small carnivores, although weak interference competition was suggested by lower detection probabilities of some species at stations where African golden cats were present. This suggests that community assembly and coexistence in this ecosystem are primarily driven by more complex processes. The studied carnivore community contains several forest specialists, which are typically more prone to localized extinction. Preserving the observed community assemblage will therefore require the maintenance of a large variety of habitats, with a particular focus on those required by the more specialized carnivores.
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- 2019
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19. Response of Gait Output and Handgrip Strength to Changes in Body Fat Mass in Pre- and Postmenopausal Women
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Sam Ibeneme, BMRPT, MSc, PhD, Chinenye Ezeigwe, BMRPT, Georgian C. Ibeneme, BNSc, MSc, Amarachi Ezuma, BMRPT, Ifeoma Okoye, MBBS, and Joseph M. Nwankwo, BPhysio, MBBS, MSc, PhD
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Therapeutics. Pharmacology ,RM1-950 - Abstract
Background: Available preliminary data on menopause does not relate changes in body fat mass (BFM) and handgrip strength (HGS) (an indicator of body/muscle strength) to gait parameters. Objective: To determine the relationship between BFM, HGS and gait parameters, namely, stride length (SL) (an indicator of walking balance/postural stability), stride frequency (SF), and velocity (V) (gait output), to guide gait training. Methods: Ninety consenting (45 postmenopausal and 45 premenopausal) female staff of the University of Nigeria Teaching Hospital, Enugu, were randomly selected and assessed for BFM and HGS with a hydration monitor and dynamometer, respectively, in an observational study. The mean of 2 trials of the number of steps and time taken to cover a 10-m distance at normal speed was used to calculate SF, SL, and V. Data were analyzed using an independent t test and a Pearson correlation coefficient at P < 0.05. Results: Premenopausal (BFM = 42.93% [12.61%], HGS = 27.89 [7.52] kg, stride ratio = 1.43, and velocity = 1.04 [0.01] m/sec) and postmenopausal (BFM = 41.55% [12.71%], HGS = 30.91 [7.07] kg, stride ratio = 1.44, and velocity = 1.06 [0.01] m/sec) women showed no significant differences in gait output/velocity (t = 0.138; P = 0.89; d = 0.029). At postmenopause, BFM was significantly and negatively (r = –0.369; r2 = 0.1362; P = 0.013) correlated with SL, whereas HGS was positively and significantly (r = 0.323; r2 = 0.104; P = 0.030) correlated with gait output at premenopause. Conclusions: BFM may adversely influence walking balance at postmenopause, whereas HGS may enhance gait output at premenopause but not postmenopause. Therefore, muscle strengthening alone may not enhance gait output in postmenopausal women without balance training. Key words: body fat mass, gait output, hand grip strength, menopause, stride ratio
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- 2019
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20. Unhappy families: using tabletop games as a technology to understand play in education
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John Lean, Sam Illingworth, and Paul Wake
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tabletop games ,digital technology ,play ,Education - Abstract
In this article, we argue that tabletop games provide a helpful means of rethinking the affordances of digital games in pedagogy. We argue that tabletop games offer a distinctive technology from digital games in exploring the idea of play as experience, providing a sociable, accessible and tactile platform that can easily be adapted by players to suit their needs. At a workshop session at an international conference on play in education, we used tabletop games to enable discussion and observation of play. This workshop suggested that, rather than a singular definition, tabletop play means different things to different people, and what is ‘counted as’ play depends upon both individual and group interactions. Building upon this discussion, in this article, we return to both tabletop and digital games to discuss the idea of play as experience, especially with regard to the use of technology in educational settings, and how games might be seen as less ‘predictable’ than other technologies. We hope that this discussion provides future inspiration to other scholars who are considering the use of tabletop games in both pedagogical and technological research.
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- 2018
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21. Rhyme and reason-using poetry to talk to underserved audiences about environmental change
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Sam Illingworth and Kirsten Jack
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Meteorology. Climatology ,QC851-999 - Abstract
The effects and consequences that environmental change will have on our society are not solely dependent on the ways in which the Earth system responds to anthropogenic effects. They are also affected by the way in which our society decides to mitigate against them. Similarly, the way society reacts to global environmental change is not wholly dependent on the scientists that are observing its effects, but is rather the collective responsibility of everyone that is affected by these observations. However, in raising awareness to engender positive change, it is often the most vulnerable communities that find themselves neglected. This study presents a new approach to discussing environmental change with underserved audiences, via a series of facilitated workshops in which participants were encouraged to engage with experts through the creation of poetry. By analysing these poems through an interpretive phenomenological approach, we demonstrate that this creates a powerful way of generating what underserved audiences really know and think about environmental change, presenting a framework through which to understand differently, the lifeworld of these communities. Keywords: Science communication, Public engagement, Poetry, Qualitative research, Climate change, Environmental health
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- 2018
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22. Preclinical Safety Studies of Enadenotucirev, a Chimeric Group B Human-Specific Oncolytic Adenovirus
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Sam Illingworth, Ying Di, Maxine Bauzon, Janet Lei, Margaret R. Duffy, Simon Alvis, Brian Champion, André Lieber, Terry Hermiston, Len W. Seymour, John Beadle, and Kerry Fisher
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enadenotucirev ,adenovirus ,oncolytic virotherapy ,preclinical model ,mouse model ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Enadenotucirev is an oncolytic group B adenovirus identified by a process of bio-selection for the ability to selectively propagate in and rapidly kill carcinoma cells. It is resistant to inactivation by human blood components, potentially enabling intravenous dosing in patients with metastatic cancer. However, there are no known permissive animal models described for group B adenoviruses that could facilitate a conventional approach to preclinical safety studies. In this manuscript, we describe our tailored preclinical strategy designed to evaluate the key biological properties of enadenotucirev. As enadenotucirev does not replicate in animal cells, a panel of primary human cells was used to evaluate enadenotucirev replication selectivity in vitro, demonstrating that virus genome levels were >100-fold lower in normal cells relative to tumor cells. Acute intravenous tolerability in mice was used to assess virus particle-mediated toxicology and effects on innate immunity. These studies showed that particle toxicity could be ameliorated by dose fractionation, using an initial dose of virus to condition the host such that cytokine responses to subsequent doses were significantly attenuated. This, in turn, supported the initiation of a phase I intravenous clinical trial with a starting dose of 1 × 1010 virus particles given on days 1, 3, and 5.
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- 2017
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23. Oncolytic Group B Adenovirus Enadenotucirev Mediates Non-apoptotic Cell Death with Membrane Disruption and Release of Inflammatory Mediators
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Arthur Dyer, Ying Di, Hugo Calderon, Sam Illingworth, Gray Kueberuwa, Alison Tedcastle, Phil Jakeman, Suet Lin Chia, Alice Brown, Michael A. Silva, David Barlow, John Beadle, Terry Hermiston, David J.P. Ferguson, Brian Champion, Kerry D. Fisher, and Leonard W. Seymour
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oncolytic virus ,adenovirus ,oncosis ,apoptosis ,cell death ,membrane permeabilization ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Enadenotucirev (EnAd) is a chimeric group B adenovirus isolated by bioselection from a library of adenovirus serotypes. It replicates selectively in and kills a diverse range of carcinoma cells, shows effective anticancer activity in preclinical systems, and is currently undergoing phase I/II clinical trials. EnAd kills cells more quickly than type 5 adenovirus, and speed of cytotoxicity is dose dependent. The EnAd death pathway does not involve p53, is predominantly caspase independent, and appears to involve a rapid fall in cellular ATP. Infected cells show early loss of membrane integrity; increased exposure of calreticulin; extracellular release of ATP, HSP70, and HMGB1; and influx of calcium. The virus also causes an obvious single membrane blister reminiscent of ischemic cell death by oncosis. In human tumor biopsies maintained in ex vivo culture, EnAd mediated release of pro-inflammatory mediators such as TNF-α, IL-6, and HMGB1. In accordance with this, EnAd-infected tumor cells showed potent stimulation of dendritic cells and CD4+ T cells in a mixed tumor-leukocyte reaction in vitro. Whereas many viruses have evolved for efficient propagation with minimal inflammation, bioselection of EnAd for rapid killing has yielded a virus with a short life cycle that combines potent cytotoxicity with a proinflammatory mechanism of cell death.
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- 2017
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24. Magnitude and treatment outcomes of pulmonary tuberculosis patients in a poor urban slum of Abia State, Nigeria
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Chidubem L Ogbudebe, Sam Izuogu, and Charity E Abu
- Subjects
Epidemiology ,Nigeria ,Treatment outcome ,Tuberculosis ,Urban slum ,Microbiology ,QR1-502 - Abstract
Objective/Background: Tuberculosis (TB) remains one of the deadliest infectious diseases worldwide, with a disproportionate number of those affected living in slum areas. We assessed the magnitude of pulmonary cases among tuberculosis patients in an urban slum in southeast Nigeria, their demographic and clinical characteristics and any associations with treatment outcomes. Methods: A retrospective cohort study of patients registered under the National TB Programme (NTP) from 1 January to 31 December 2012 was carried out. Data were extracted from TB treatment cards and registers. Results: Of 647 new TB patients registered, 555 (85.8%) were pulmonary TB (PTB) with a mean age of 34.5years, and a male/female ratio of 1.3. Among these, 468 (84.3%) were smear-positive, while 87 (15.7%) were smear-negative cases. Twenty-one (3.8%) were children younger than 15years old. TB/HIV co-infection rate was 16.9%; 57.4% received antiretroviral therapy (ART) and 88.3% received cotrimoxazole preventive therapy (CPT). Female patients were significantly younger compared to male patients (p = 0.003), had higher proportions of smear-negative TB (p = 0.001) and HIV-positive status (p ≤ 0.001). Treatment success rate was 88.5% among smear-positive patients and 79.3% among smear-negative patients. More patients with smear-negative TB were lost to follow up compared with smear-positive TB patients (p < 0.02). HIV co-infection was associated with unfavourable treatment outcomes (OR 0.2, CI 0.1–0.4, p ≤0.001). Among them, those who received ART had better outcomes. Conclusions: The study revealed high proportion of PTB, mostly smear-positive TB with HIV-associated outcomes and underlines the need to ensure early TB diagnosis and improved access to HIV care for HIV co-infected patients in this setting.
- Published
- 2016
- Full Text
- View/download PDF
25. Development of a versatile oncolytic virus platform for local intra-tumoural expression of therapeutic transgenes.
- Author
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Nalini Marino, Sam Illingworth, Prithvi Kodialbail, Ashvin Patel, Hugo Calderon, Rochelle Lear, Kerry D Fisher, Brian R Champion, and Alice C N Brown
- Subjects
Medicine ,Science - Abstract
Oncolytic viruses which infect and kill tumour cells can also be genetically modified to express therapeutic genes that augment their anti-cancer activities. Modifying oncolytic viruses to produce effective cancer therapies is challenging as encoding transgenes often attenuates virus activity or prevents systemic delivery in patients due to the risk of off-target expression of transgenes in healthy tissues. To overcome these issues we aimed to generate a readily modifiable virus platform using the oncolytic adenovirus, enadenotucirev. Enadenotucirev replicates in human tumour cells but not cells from healthy tissues and can be delivered intravenously because it is stable in human blood. Here, the enadenotucirev genome was used to generate plasmids into which synthesised transgene cassettes could be directly cloned in a single step reaction. The platform enabled generation of panels of reporter viruses to identify cloning sites and transgene cassette designs where transgene expression could be linked to the virus life cycle. It was demonstrated using these viruses that encoded transgene proteins could be successfully expressed in tumour cells in vitro and tumours in vivo. The expression of transgenes did not impact either the oncolytic activity or selective properties of the virus. The effectiveness of this approach as a drug delivery platform for complex therapeutics was demonstrated by inserting multiple genes in the virus genome to encode full length anti-VEGF antibodies. Functional antibody could be synthesised and secreted from infected tumour cells without impacting the activity of the virus particle in terms of oncolytic potency, manufacturing yields or selectivity for tumour cells. In vivo, viral particles could be efficaciously delivered intravenously to disseminated orthotopic tumours.
- Published
- 2017
- Full Text
- View/download PDF
26. Aiming for long-term, objective-driven science communication in the UK [version 2; referees: 1 approved, 2 approved with reservations]
- Author
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Andreas Prokop and Sam Illingworth
- Subjects
Public Engagement ,Publishing & Peer Review ,Web and Social Media ,Medicine ,Science - Abstract
Communicating science to wider lay audiences is an increasingly important part of a scientist's remit, and is something that many scientists are keen to embrace. However, based on surveys carried out amongst the UK public, as well as our own experiences in developing and delivering such activities, we believe that they are not always as effective at engaging members of the general public as they could be. In this opinion article we argue that in order to achieve more effective science communication, we need more objective-driven and long-term initiatives. As well as being implemented by the scientists themselves, funding organisations can play an important role in helping to drive such initiatives, and we suggest a list of actionable items that might allow for some of these ideas to be implemented.
- Published
- 2016
- Full Text
- View/download PDF
27. Are scientific abstracts written in poetic verse an effective representation of the underlying research? [version 3; referees: 1 approved, 2 approved with reservations]
- Author
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Sam Illingworth
- Subjects
Public Engagement ,Publishing & Peer Review ,Science & Medical Education ,Medicine ,Science - Abstract
The central purpose of science is to explain (Purtill, 1970). However, who is that explanation for, and how is this explanation communicated once it has been deduced? Scientific research is typically communicated via papers in journals, with an abstract presented as a summary of that explanation. However, in many instances they may be written in a manner which is non-communicatory to a lay reader (Halliday & Martin, 2003). This study begins to investigate if poetry could be used as an alternative form of communication, by first assessing if poetic verse is an effective form of communication to other scientists. In order to assess this suitability, a survey was conducted in which two different groups of participants were asked questions based on a scientific abstract. One group of participants was given the original scientific abstract, whilst the second group was instead given a poem written about the scientific study. Quantitative analysis found that whilst a scientific audience found a poetic interpretation of a scientific abstract to be no less interesting or inspiring than the original prose, they did find it to be less accessible. However, further qualitative analysis suggested that the poem did a good job in conveying a similar meaning to that presented in the original abstract. The results of this study indicate that whilst for a scientific audience poetry should not replace the prose abstract, it could be used alongside the original format to inspire the reader to find out more about the topic. Further research is needed to investigate the effectiveness of this approach for a non-expert audience. Alternative version: Are scientific papers understood, By anyone from outside of the field; And is an abstract really any good, If jargon means its secrets aren’t revealed? Could poetry present a different way, Of summing up research in a nutshell; Presented in a language for the lay, Yet still useful for scientists as well? This study aimed to find if it was true, That poems could be a way to convey fact; By splitting sample researchers in two: And giving each a different abstract. The findings showed that whilst prose was preferred, Related meanings from both were inferred.
- Published
- 2016
- Full Text
- View/download PDF
28. What does the UK public want from academic science communication? [version 1; referees: 3 approved]
- Author
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James Redfern, Sam Illingworth, and Joanna Verran
- Subjects
Public Engagement ,Science & Medical Education ,Web and Social Media ,Medicine ,Science - Abstract
The overall aim of public academic science communication is to engage a non-scientist with a particular field of science and/or research topic, often driven by the expertise of the academic. An e-survey was designed to provide insight into respondent’s current and future engagement with science communication activities. Respondents provided a wide range of ideas and concerns as to the ‘common practice’ of academic science communication, and whilst they support some of these popular approaches (such as open-door events and science festivals), there are alternatives that may enable wider engagement. Suggestions of internet-based approaches and digital media were strongly encouraged, and although respondents found merits in methods such as science festivals, limitations such as geography, time and topic of interest were a barrier to engagement for some. Academics and scientists need to think carefully about how they plan their science communication activities and carry out evaluations, including considering the point of view of the public, as although defaulting to hands-on open door events at their university may seem like the expected standard, it may not be the best way to reach the intended audience.
- Published
- 2016
- Full Text
- View/download PDF
29. Disulfide-Trapping Identifies a New, Effective Chemical Probe for Activating the Nuclear Receptor Human LRH-1 (NR5A2).
- Author
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Felipe de Jesus Cortez, Miyuki Suzawa, Sam Irvy, John M Bruning, Elena Sablin, Matthew P Jacobson, Robert J Fletterick, Holly A Ingraham, and Pamela M England
- Subjects
Medicine ,Science - Abstract
Conventional efforts relying on high-throughput physical and virtual screening of large compound libraries have failed to yield high-efficiency chemical probes for many of the 48 human nuclear receptors. Here, we investigated whether disulfide-trapping, an approach new to nuclear receptors, would provide effective lead compounds targeting human liver receptor homolog 1 (hLRH-1, NR5A2). Despite the fact that hLRH-1 contains a large ligand binding pocket and binds phospholipids with high affinity, existing synthetic hLRH-1 ligands are of limited utility due to poor solubility, low efficacy or significant off-target effects. Using disulfide-trapping, we identified a lead compound that conjugates with remarkably high-efficiency to a native cysteine residue (Cys346) lining the hydrophobic cavity in the ligand binding domain of hLRH-1. Guided by computational modeling and cellular assays, the lead compound was elaborated into ligands PME8 and PME9 that bind hLRH-1 reversibly (no cysteine reactivity) and increase hLRH-1 activity in cells. When compared with the existing hLRH-1 synthetic agonist RJW100, both PME8 and PME9 showed comparable induction of the LRH-1 dependent target gene CYP24A1 in human HepG2 cells, beginning as early as 3 h after drug treatment. The induction is specific as siRNA-mediated knock-down of hLRH-1 renders both PME8 and PME9 ineffective. These data show that PME8 and PME9 are potent activators of hLRH-1 and suggest that with further development this lead series may yield useful chemical probes for manipulating LRH-1 activity in vivo.
- Published
- 2016
- Full Text
- View/download PDF
30. What’s in a Name? Exploring the Nomenclature of Science Communication in the UK [version 2; referees: 1 approved, 3 approved with reservations]
- Author
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Sam Illingworth, James Redfern, Steve Millington, and Sam Gray
- Subjects
Public Engagement ,Web and Social Media ,Medicine ,Science - Abstract
This study, via a consideration of the literature, and a limited survey of active science communicators, presents concise and workable definitions for science outreach, public engagement, widening participation, and knowledge exchange, in a UK context. Sixty-six per cent of participants agreed that their definitions of outreach, public engagement, and widening participation aligned with those of their colleagues, whilst 64% felt that their personal definitions matched those of their institute. However, closer inspection of the open-ended questions found the respondents often differed in the use of the nomenclature. In particular, the respondents found it difficult to define knowledge exchange in this context. It is hoped that this initial study will form the foundation of future work in this area, and that it will help to further develop the debate regarding the need for a consistent nomenclature across science communication.
- Published
- 2015
- Full Text
- View/download PDF
31. What’s in a Name? Exploring the Nomenclature of Science Communication in the UK [v1; ref status: indexed, http://f1000r.es/5p0]
- Author
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Sam Illingworth, James Redfern, Steve Millington, and Sam Gray
- Subjects
Public Engagement ,Web and Social Media ,Medicine ,Science - Abstract
This study, via a consideration of the literature, and a survey of science communicators, presents concise and workable definitions for science outreach, public engagement, widening participation, and knowledge exchange, in a UK context. Sixty-six per cent of participants agreed that their definitions of outreach, public engagement, and widening participation aligned with those of their colleagues, whilst 64% felt that their personal definitions matched those of their institute. However, closer inspection of the open-ended questions found the respondents often differed in the use of the nomenclature. In particular, the respondents found it difficult to define knowledge exchange in this context.
- Published
- 2015
- Full Text
- View/download PDF
32. Electroencephalographic variation during end maintenance and emergence from surgical anesthesia.
- Author
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Divya Chander, Paul S García, Jono N MacColl, Sam Illing, and Jamie W Sleigh
- Subjects
Medicine ,Science - Abstract
The re-establishment of conscious awareness after discontinuing general anesthesia has often been assumed to be the inverse of loss of consciousness. This is despite the obvious asymmetry in the initiation and termination of natural sleep. In order to characterize the restoration of consciousness after surgery, we recorded frontal electroencephalograph (EEG) from 100 patients in the operating room during maintenance and emergence from general anesthesia. We have defined, for the first time, 4 steady-state patterns of anesthetic maintenance based on the relative EEG power in the slow-wave (
- Published
- 2014
- Full Text
- View/download PDF
33. The medium is the messageEräitä huomioita mediakulttuurista ja sen tutkimuksesta
- Author
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Sam Inkinen
- Subjects
Social sciences (General) ,H1-99 ,Communication. Mass media ,P87-96 ,Journalism. The periodical press, etc. ,PN4699-5650 - Published
- 2002
34. Kimmo Ketola ym.: Puuttuvat viestit
- Author
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Sam Inkinen
- Subjects
Social sciences (General) ,H1-99 ,Communication. Mass media ,P87-96 ,Journalism. The periodical press, etc. ,PN4699-5650 - Published
- 2002
35. Uusmedian nousu ja (t)uho? – sisäistä kritiikkiä
- Author
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Sam Inkinen
- Subjects
Social sciences (General) ,H1-99 ,Communication. Mass media ,P87-96 ,Journalism. The periodical press, etc. ,PN4699-5650 - Published
- 2001
36. Tutkimusta, anarkiaa ja kulttuurikritiikkiäTEMP – väliaikainen medialaboratorio Kiasmassa 8.10.–9.11.1999
- Author
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Sam Inkinen
- Subjects
Social sciences (General) ,H1-99 ,Communication. Mass media ,P87-96 ,Journalism. The periodical press, etc. ,PN4699-5650 - Published
- 1999
37. Targeting burrows improves detection in giant pangolin Smutsia gigantea camera-trap surveys
- Author
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Naomi Matthews, Stuart Nixon, Achaz von Hardenberg, Sam Isoke, and Matthew Geary
- Subjects
Camera trap ,detection probability ,giant pangolin ,occupancy modelling ,Smutsia gigantea ,survey design ,targeted survey ,Uganda ,General. Including nature conservation, geographical distribution ,QH1-199.5 - Abstract
The Endangered giant pangolin Smutsia gigantea is rare and elusive across its Central African range. Because of its solitary and nocturnal nature, the species is difficult to study and so its ecology is little known. Pangolins are considered the most trafficked mammals in the world. Therefore, confirming presence accurately and monitoring trends in distribution and abundance are essential to inform and prioritize conservation efforts. Camera traps are popular tools for surveying rare and cryptic species. However, non-targeted camera-trap surveys yield low camera-trapping rates for pangolins. Here we use camera-trap data from surveys conducted within three protected areas in Uganda to test whether targeted placement of cameras improves giant pangolin detection probability in occupancy models. The results indicate that giant pangolin detection probability is highest when camera traps are targeted on burrows. The median number of days from camera deployment to first giant pangolin detection event was 12, with the majority of events captured within 32 days from deployment. The median interval between giant pangolin events at a camera-trap site was 33 days. We demonstrate that camera-trap surveys can be designed to improve the detection of giant pangolins and we outline a set of recommendations to maximize the effectiveness of efforts to survey and monitor the species.
- Full Text
- View/download PDF
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