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https://www.readbyqxmd.com/read/28039527/individual-level-behavioral-responses-of-immature-green-turtles-to-snorkeler-disturbance
#1
Lucas P Griffin, Jacob W Brownscombe, Tyler O Gagné, Alexander D M Wilson, Steven J Cooke, Andy J Danylchuk
Despite many positive benefits of ecotourism, increased human encounters with wildlife may have detrimental effects on wild animals. As charismatic megafauna, nesting and foraging sea turtles are increasingly the focus of ecotourism activities. The purpose of our study was to quantify the behavioral responses of immature green turtles (Chelonia mydas) to disturbance by snorkelers, and to investigate whether turtles have individual-level responses to snorkeler disturbance. Using a standardized disturbance stimulus in the field, we recorded turtle behaviors pre- and post-disturbance by snorkelers...
December 30, 2016: Oecologia
https://www.readbyqxmd.com/read/28007883/evidence-for-amino-acid-snorkeling-from-a-high-resolution-in-vivo-analysis-of-fis1-tail-anchor-insertion-at-the-mitochondrial-outer-membrane
#2
Abdurrahman Keskin, Emel Akdoğan, Cory D Dunn
Proteins localized to mitochondria by a carboxyl-terminal tail anchor (TA) play roles in apoptosis, mitochondrial dynamics, and mitochondrial protein import. To reveal characteristics of TAs that may be important for mitochondrial targeting, we focused our attention upon the TA of the Saccharomyces cerevisiae Fis1 protein. Specifically, we generated a library of Fis1p TA variants fused to the Gal4 transcription factor, then, using next-generation sequencing, revealed which Fis1p TA mutations inhibited membrane insertion and allowed Gal4p activity in the nucleus...
December 22, 2016: Genetics
https://www.readbyqxmd.com/read/27966202/provisional-report-on-diving-related-fatalities-in-australian-waters-in-2011
#3
John Lippmann, Christopher Lawrence, Andrew Fock, Scott Jamieson, Richard Harris
INTRODUCTION: An individual case review of diving-related deaths reported as occurring in Australia in 2011 was conducted as part of the DAN Asia-Pacific dive fatality reporting project. METHOD: The case studies were compiled using reports from witnesses, the police and coroners. In each case, the particular circumstances of the accident and, where available, details from the post-mortem examination are provided. A chain of events analysis was conducted for each case...
December 2016: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://www.readbyqxmd.com/read/27929375/implications-of-the-differing-roles-of-the-%C3%AE-1-and-%C3%AE-3-transmembrane-and-cytoplasmic-domains-for-integrin-function
#4
Zhenwei Lu, Sijo Mathew, Jiang Chen, Arina Hadziselimovic, Riya Palamuttam, Billy G Hudson, Reinhard Fässler, Ambra Pozzi, Charles R Sanders, Roy Zent
Integrins are transmembrane receptors composed of α and β subunits. Although most integrins contain β1, canonical activation mechanisms are based on studies of the platelet integrin, αIIbβ3. Its inactive conformation is characterized by the association of the αIIb transmembrane and cytosolic domain (TM/CT) with a tilted β3 TM/CT that leads to activation when disrupted. We show significant structural differences between β1 and β3 TM/CT in bicelles. Moreover, the 'snorkeling' lysine at the TM/CT interface of β subunits, previously proposed to regulate αIIbβ3 activation by ion pairing with nearby lipids, plays opposite roles in β1 and β3 integrin function and in neither case is responsible for TM tilt...
8, 2016: ELife
https://www.readbyqxmd.com/read/27863770/chimney-periscope-or-snorkel-technique-to-relieve-dysphagia
#5
EDITORIAL
Himanshu J Patel
No abstract text is available yet for this article.
October 24, 2016: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/27823593/snorkel-endovascular-abdominal-aortic-aneurysm-repair-versus-fenestrated-endovascular-aneurysm-repair-is-it-a-competition
#6
REVIEW
Adam Tanious, Jason T Lee, Murray Shames
The endovascular treatment of juxtarenal abdominal aortic aneurysm (AAA) can be performed by either a standard endovascular stent graft with additional snorkle grafts to aorta branches (snorkel endovascular aneurysm repair) or implantation of a fenestrated stent graft (fenestrated endovascular aneurysm repair). While many vascular surgeons consider snorkel endovascular aneurysm repair and fenestrated endovascular aneurysm repair to be competing techniques or alternate strategies, published procedural outcomes suggest more complementary roles...
March 2016: Seminars in Vascular Surgery
https://www.readbyqxmd.com/read/27811648/a-new-shallow-water-species-of-artemisina-vosmaer-1885-microcionidae-demospongiae-porifera-from-northeastern-brazil
#7
Thaynã Cavalcanti, George Garcia Santos, Eduardo Hajdu, Ulisses Pinheiro
Artemisina is a microcionid characterized by lacking a distinctive choanosomal skeleton or definite spongin fibres, lacking also echinating spicules, and with a nearly radial ectosomal skeleton (Hooper 2002). The genus currently has 19 valid species, six of which are recorded from the Atlantic Ocean (Van Soest et al. 2016): A. erecta Topsent, 1904, A. incrustans van Soest et al., 2013, A. melana van Soest, 1984, A. melanoides van Soest et al., 2013, A. transiens Topsent, 1890 and A. vulcani Lévi, 1963. The present study describes a new species of Artemisina from Northeastern Brazil...
November 3, 2016: Zootaxa
https://www.readbyqxmd.com/read/27703862/reef-scale-trends-in-florida-acropora-spp-abundance-and-the-effects-of-population-enhancement
#8
Margaret W Miller, Katryna Kerr, Dana E Williams
Since the listing of Acropora palmata and A. cervicornis under the US Endangered Species Act in 2006, increasing investments have been made in propagation of listed corals (primarily A. cervicornis, A. palmata to a much lesser extent) in offshore coral nurseries and outplanting cultured fragments to reef habitats. This investment is superimposed over a spatiotemporal patchwork of ongoing disturbances (especially storms, thermal bleaching, and disease) as well as the potential for natural population recovery...
2016: PeerJ
https://www.readbyqxmd.com/read/27601675/energetics-of-side-chain-snorkeling-in-transmembrane-helices-probed-by-nonproteinogenic-amino-acids
#9
Karin Öjemalm, Takashi Higuchi, Patricia Lara, Erik Lindahl, Hiroaki Suga, Gunnar von Heijne
Cotranslational translocon-mediated insertion of membrane proteins into the endoplasmic reticulum is a key process in membrane protein biogenesis. Although the mechanism is understood in outline, quantitative data on the energetics of the process is scarce. Here, we have measured the effect on membrane integration efficiency of nonproteinogenic analogs of the positively charged amino acids arginine and lysine incorporated into model transmembrane segments. We provide estimates of the influence on the apparent free energy of membrane integration (ΔGapp) of "snorkeling" of charged amino acids toward the lipid-water interface, and of charge neutralization...
September 20, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27566806/novel-endovascular-procedures-and-new-developments-in-aortic-surgery
#10
S W K Cheng
Endovascular repair has evolved to become a viable mainstream treatment for aortic pathology in both acute and elective settings. As technology advanced, traditional anatomical barriers were progressively tackled using new devices and novel procedures, and there are now multiple options available to the vascular surgeon. In the abdominal aorta, advances in endovascular aneurysm repair have been in the treatment of hostile aortic necks using new sealing concepts and ancillary procedures, and in branch preservation using fenestrations and snorkels...
September 2016: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/27547521/artificial-reefs-and-marine-protected-areas-a-study-in-willingness-to-pay-to-access-folkestone-marine-reserve-barbados-west-indies
#11
Anne E Kirkbride-Smith, Philip M Wheeler, Magnus L Johnson
Artificial reefs in marine protected areas provide additional habitat for biodiversity viewing, and therefore may offer an innovative management solution for managing for coral reef recovery and resilience. Marine park user fees can generate revenue to help manage and maintain natural and artificial reefs. Using a stated preference survey, this study investigates the present consumer surplus associated with visitor use of a marine protected area in Barbados. Two hypothetical markets were presented to differentiate between respondents use values of either: (a) natural reefs within the marine reserve or (b) artificial reef habitat for recreational enhancement...
2016: PeerJ
https://www.readbyqxmd.com/read/27499443/chimneys-and-sandwiches-for-endovascular-arch-repair-in-patients-with-marfan-syndrome-are-we-snorkeling-in-cloudy-waters
#12
EDITORIAL
Maral Ouzounian, Francois Dagenais
No abstract text is available yet for this article.
October 2016: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/27384980/a-comparison-of-measurements-of-change-in-respiratory-status-in-spontaneously-breathing-volunteers-by-the-exspiron-noninvasive-respiratory-volume-monitor-versus-the-capnostream-capnometer
#13
George W Williams, Christy A George, Brian C Harvey, Jenny E Freeman
BACKGROUND: Current respiratory monitoring technologies such as pulse oximetry and capnography have been insufficient to identify early signs of respiratory compromise in nonintubated patients. Pulse oximetry, when used appropriately, will alert the caregiver to an episode of dangerous hypoxemia. However, desaturation lags significantly behind hypoventilation and alarm fatigue due to false alarms poses an additional problem. Capnography, which measures end-tidal CO2 (EtCO2) and respiratory rate (RR), has not been universally used for nonintubated patients for multiple reasons, including the inability to reliably relate EtCO2 to the level of impending respiratory compromise and lack of patient compliance...
January 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/27368044/pathophysiological-and-diagnostic-implications-of-cardiac-biomarkers-and-antidiuretic-hormone-release-in-distinguishing-immersion-pulmonary-edema-from-decompression-sickness
#14
Pierre Louge, Mathieu Coulange, Frederic Beneton, Emmanuel Gempp, Olivier Le Pennetier, Maxime Algoud, Lorene Dubourg, Pierre Naibo, Marion Marlinge, Pierre Michelet, Donato Vairo, Nathalie Kipson, François Kerbaul, Yves Jammes, Ian M Jones, Jean-Guillaume Steinberg, Jean Ruf, Régis Guieu, Alain Boussuges, Emmanuel Fenouillet
Immersion pulmonary edema (IPE) is a misdiagnosed environmental illness caused by water immersion, cold, and exertion. IPE occurs typically during SCUBA diving, snorkeling, and swimming. IPE is sometimes associated with myocardial injury and/or loss of consciousness in water, which may be fatal. IPE is thought to involve hemodynamic and cardiovascular disturbances, but its pathophysiology remains largely unclear, which makes IPE prevention difficult. This observational study aimed to document IPE pathogenesis and improve diagnostic reliability, including distinguishing in some conditions IPE from decompression sickness (DCS), another diving-related disorder...
June 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27343104/multigenerational-effects-of-rearing-atmospheric-oxygen-level-on-the-tracheal-dimensions-and-diffusing-capacities-of-pupal-and-adult-drosophila-melanogaster
#15
C Jaco Klok, Alexander Kaiser, John J Socha, Wah-Keat Lee, Jon F Harrison
Insects are small relative to vertebrates, and were larger in the Paleozoic when atmospheric oxygen levels were higher. The safety margin for oxygen delivery does not increase in larger insects, due to an increased mass-specific investment in the tracheal system and a greater use of convection in larger insects. Prior studies have shown that the dimensions and number of tracheal system branches varies inversely with rearing oxygen in embryonic and larval insects. Here we tested whether rearing in 10, 21, or 40 kPa atmospheric oxygen atmospheres for 5-7 generations affected the tracheal dimensions and diffusing capacities of pupal and adult Drosophila...
2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27265985/the-evolution-of-scuba-divers-pulmonary-edema
#16
REVIEW
Carl Edmonds
The evolution of scuba divers pulmonary edema is described. When discovered in 1981, it was believed to be a cold-induced response in a submerged, otherwise healthy, scuba diver. The clinical features are described and discussed, as are the demographics. An alleged prevalence of 1.1% was complicated by problematic statistics and an apparent increase in reported cases. Recurrences both while diving and swimming or snorkeling were common. More recent case reports and surveys are described, identifying predisposing factors and associations, including cardiac pathology...
March 2016: Undersea & Hyperbaric Medicine: Journal of the Undersea and Hyperbaric Medical Society, Inc
https://www.readbyqxmd.com/read/27226382/estimating-peak-oxygen-uptake-based-on-postexercise-measurements-in-swimming
#17
Diego Chaverri, Xavier Iglesias, Thorsten Schuller, Uwe Hoffmann, Ferran A Rodríguez
To assess the validity of postexercise measurements in estimating peak oxygen uptake (V̇O2peak) in swimming, we compared oxygen uptake (V̇O2) measurements during supramaximal exercise with various commonly adopted methods, including a recently developed heart rate - V̇O2 modelling procedure. Thirty-one elite swimmers performed a 200-m maximal swim where V̇O2 was measured breath-by-breath using a portable gas analyzer connected to a respiratory snorkel, 1 min before, during, and 3 min postexercise. V̇O2peak(-20-0) was the average of the last 20 s of effort...
June 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/27168973/gopros%C3%A2-as-an-underwater-photogrammetry-tool-for-citizen-science
#18
Vincent Raoult, Peter A David, Sally F Dupont, Ciaran P Mathewson, Samuel J O'Neill, Nicholas N Powell, Jane E Williamson
Citizen science can increase the scope of research in the marine environment; however, it suffers from necessitating specialized training and simplified methodologies that reduce research output. This paper presents a simplified, novel survey methodology for citizen scientists, which combines GoPro imagery and structure from motion to construct an ortho-corrected 3D model of habitats for analysis. Results using a coral reef habitat were compared to surveys conducted with traditional snorkelling methods for benthic cover, holothurian counts, and coral health...
2016: PeerJ
https://www.readbyqxmd.com/read/27145221/in-memoriam-richard-g-harrison-his-life-and-legacy
#19
Daniel J Howard, Richard K Grosberg, Mohamed A F Noor, Benjamin B Normark, David M Rand, Kerry L Shaw, Christopher S Willett
Richard G. Harrison passed away unexpectedly on April 12th, 2016. In this memoriam we pay tribute to the life and legacy of an extraordinary scientist, mentor, friend, husband, and father.
June 2016: Molecular Ecology
https://www.readbyqxmd.com/read/27127562/minimally-invasive-techniques-for-total-aortic-arch-reconstruction
#20
Jason Faulds, Harleen K Sandhu, Anthony L Estrera, Hazim J Safi
The cumulative experience with endovascular aortic repair in the descending thoracic and infrarenal aorta has led to increased interest in endovascular aortic arch reconstruction. Open total arch replacement is a robust operation that can be performed with excellent results. However, it requires cardiopulmonary bypass and circulatory arrest and, therefore, may not be tolerated by all patients. Minimally invasive techniques have been considered as an alternative and include hybrid arch debranching, parallel stent graft deployment in the chimney and snorkel configurations, and complete endovascular branched reconstruction with multi-branched devices...
January 2016: Methodist DeBakey Cardiovascular Journal
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