1,479 research outputs found
A star-forming galaxy at z= 5.78 in the Chandra Deep Field South
Get PDFWe report the discovery of a luminous z = 5.78 star-forming galaxy in the Chandra Deep Field South. This galaxy was selected as an ‘i-drop’ from the GOODS public survey imaging with the Hubble Space Telescope/Advanced Camera for Surveys (object 3 in the work of Stanway, Bunker & McMahon 2003). The large colour of (i′−z′)AB = 1.6 indicated a spectral break consistent with the Lyman α forest absorption shortward of Lyman α at z≈ 6. The galaxy is very compact (marginally resolved with ACS with a half-light radius of 0.08 arcsec, so rhl 5. Our spectroscopic redshift for this object confirms the validity of the i′-drop technique of Stanway et al. to select star-forming galaxies atz≈ 6
Diagnostic Imaging Safety and Protection:A Collective Interaction and Decision-Making Processes and Procedures toward an Effective Health Outcome
Get PDFThis chapter will focus on the safety and protection in utilization of radiation and nonradiation imaging modalities within a medical encounter in health institutional context. The challenges of ease of access on the one hand regarding a referral versus accessing of these imaging services. The roles and responsibilities of the diverse range of professionals in the medical encounter are in ensuring that an effective decision-making is made at each point in time. The importance of communication, coordination, collaboration, and alignment is in ensuring that the care and safety of the patient is not compromised. Thus, the chore essence of provider is patient-centered care, that is, from the point of the initiation of the referral to the outcomes of an effective medical treatment and management plan. The role of the imaging investigation and its value is outweighing the risks versus harm through these chains of events and beyond
Chandra, Subrato - Professor of Aerospace Engineering
No full textDr. Subrato Chandra, Professor of Aerospace Engineering, holding an apparatus. He has focused his career on solar power, and is the author of A Guide to Solar Water Heating in Florida.https://stars.library.ucf.edu/univphotocollection/1588/thumbnail.jp
Negatively supercharging cellulases render them lignin-resistant
No full textNon-specific adsorption of cellulases to lignin hinders enzymatic deconstruction of lignocellulosic biomass. Here we tested the hypothesis that negatively supercharging cellulases could reduce lignin inhibition. Computational design was used to negatively supercharge the surfaces of Ruminoclostridium thermocellum family 5 CelE and a CelE-family 3a carbohydrate binding module fusion. Resulting designs maintained the same expression yield, thermal stability, and nearly identical activity on soluble substrate as the wild-type proteins. Four designs showed complete lack of inhibition by lignin but with lower cellulose conversion compared to original enzymes. Increasing salt concentrations could partially rescue the activity of supercharged enzymes, supporting a mechanism of electrostatic repulsion between designs and cellulose. Results showcase a protein engineering strategy to construct highly active cellulases that are resistant to lignin-mediated inactivation, although further work is needed to understand the relationship between negative protein surface potential and activity on insoluble polysaccharides.Peer reviewe
Diagnostic medical imaging services with myriads of ethical dilemmas in a contemporary healthcare context:Is artificial intelligence the solution?
No full textThis chapter provides a bird’s eye view on medical imaging intertwined within a complex evolving healthcare system context. The value of medical imaging within a medical encounter is full of appraisals for its ability to enable a diagnosis and for its role in interventional and therapeutic procedures. However, one cannot ignore the utilization of these services in high-quality care and services without taking into consideration the multitude of associated ethical dilemmas.Various topics and themes on medical imaging are touched upon in discussions and are supported with some research evidence to flag the multiple factors to consider when a medical imaging examination is considered. The ideal would be a seamless encounter with use of best practice principles integrating ethical considerations.However, the complexity comes in because of an expanding diverse range of stakeholders involved to enable a seamless encounter to achieve a quality health outcome. The reality of medical imaging is in constant flux with its evolving technological developments with shifting professional boundaries roles and responsibilities including upskilling. The current artificial intelligence is a typical example with its fast-paced filtration into medical imaging attracting attention and praise for its capabilities and the expectation that it has the potential to further enhance the efficiency and effectiveness of medical imaging services. The reality is fundamental issues of the appropriate and effective utilization of medical imaging are not yet resolved. Is artificial intelligence the solution to the daily medical imaging ethical issues
Exploration of gynaecological cancer high dose-rate brachytherapy treatment:a pilot study
Get PDFIntroduction: Performing brachytherapy on female patients with gynaecological cancer is a sensitive procedure, apart from it being an intricate investigation. The aim of this study: establishing gynaecological cancer patients' expectations, experiences and understandings of the high dose-rate brachytherapy treatment procedure. Exploring these patients' life-worlds provides further insights into improving their preparedness and experiences.Methods: A qualitative research design with a descriptive phenomenological research approach was used. Recruitment entailed using purposive sampling. To obtain rich insights into the lived experiences, data was acquired through semi-structured interviews until data saturation.Results: Major challenges were experienced with mixed thoughts and feelings, from negative trauma to desires being fulfilled. These patients should have received more information regarding their upcoming brachytherapy treatment. This would have alleviated some of their fears and anxieties, which would in turn have provided them with a better brachytherapy treatment experience. Envisaged outcomes and desires are used to cope. Patients influence each other negatively, so they rather wanted to "see for themselves".Conclusion: Despite some disappointments and negative experiences throughout the brachytherapy continuum, the patients were left with a positive outlook, saying that it is an excellent and necessary treatment. Further studies should be done to elaborate on fulfilments of recommendations in the brachytherapy department of radiation oncology.</p
Radio sources in the Chandra Galactic Bulge Survey
Get PDFWe discuss radio sources in the Chandra Galactic Bulge Survey region. By cross-matching the X-ray sources in this field with the NRAO VLA Sky Survey archival data, we find 12 candidate matches. We present a classification scheme for radio/X-ray matches in surveys taken in or near the Galactic plane, taking into account other multiwavelength data. We show that none of the matches found here is likely to be due to coronal activity from normal stars because the radio to X-ray flux ratios are systematically too high. We show that one of the source could be a radio pulsar, and that one could be a planetary nebula, but that the bulk of the sources are likely to be background active galactic nuclei (AGN), with many confirmed through a variety of approaches. Several of the AGN are bright enough in the near-infrared (and presumably in the optical) to use as probes of the interstellar medium in the inner Galaxy
Religion, Culture and Nationalism in India. <br>: Interview with Sudhir Chandra (Mizoram University, India).
No full textFonds audiovisuel du programme "ESCoM-AAR" (Equipe Sémiotique Cognitive et nouveaux Médias - Archives Audiovisuelles de la Recherche. Paris, France, 2000 - 2016).Sudhir CHANDRA is an historian. His main research topic is the formation of national indian consciousness in the XXe century.He has published in 2002 Continuing Dilemmas: Understanding Social Consciousness (New Delhi, Tulika Books). He is also the author of Enslaved Daughters: Colonialism, Law and Women's Right (New Delhi, Oxford University Press, 1997), The Oppressive Present: Literature and Social Consciousness in Colonial India (New Delhi, Oxford University Press, 1992) and Dependence and Disillusionment: Emergence of National Consciousness in Later Nineteenth Century India (New Delhi, Manas, 1975)
Religion, Culture and Nationalism in India. <br>: Interview with Sudhir Chandra (Mizoram University, India).
No full textFonds audiovisuel du programme "ESCoM-AAR" (Equipe Sémiotique Cognitive et nouveaux Médias - Archives Audiovisuelles de la Recherche. Paris, France, 2000 - 2016).Sudhir CHANDRA is an historian. His main research topic is the formation of national indian consciousness in the XXe century.He has published in 2002 Continuing Dilemmas: Understanding Social Consciousness (New Delhi, Tulika Books). He is also the author of Enslaved Daughters: Colonialism, Law and Women's Right (New Delhi, Oxford University Press, 1997), The Oppressive Present: Literature and Social Consciousness in Colonial India (New Delhi, Oxford University Press, 1992) and Dependence and Disillusionment: Emergence of National Consciousness in Later Nineteenth Century India (New Delhi, Manas, 1975)
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