This study demonstrated the potential effects of internal waves (IWs) on heterotrophic bacterial activities for the first time. Nine anchored studies were conducted from 2009-2012 in the South China Sea areas with different physical conditions, i.e. areas subjected to elevation IWs, to depression IWs, and to weak/no IWs. The latter two areas were treated as the Control sites. Field survey results indicated that within the euphotic zone, the minima of the depth-averaged bacterial production (IBP; ∼1.0 mgC m d ) and growth rate (IBμ; ∼0.1 d ) at all sites were similar. Except for one case, the maxima of IBP (6-12 mgC m d ) and IBμ (0.55-1.13 d ) of the elevation IWs areas were ∼fivefolds higher than those of the Control sites (IBP 1.7-2.1 mgC m d ; IBμ 0.13-0.24 d ). Replicate surveys conducted at the north-western area of the Dongsha atoll during spring-to-neap (NW1 survey) and neap-to-spring (NW2 survey) tide periods showed a great contrast to each other. Low variation and averages of IBμ in NW1 survey were similar to those of the Control sites, while those in NW2 were similar to the other elevation IWs sites with larger variation and higher averages of IBμ. This finding suggests that bacterial activities may be a function of the lunar fortnightly (14-day) cycle. Enrichment experiments suggested more directly that the limiting inorganic nutrients introduced by the elevation waves (EIWs) may contribute a higher IBμ within the euphotic zone.
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http://dx.doi.org/10.1111/1462-2920.13273 | DOI Listing |
J Biol Eng
August 2024
Department of Cardiac Surgery, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Heart Centre Dresden, Dresden, Germany.
Introduction: Microphysiological systems (MPS) offer simulation of (patho)physiological parameters. Investigation includes items which lead to fibrosis and calcification in development and progress of calcific aortic valve disease, based e.g.
View Article and Find Full Text PDFLancet Reg Health Eur
May 2024
MRC Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK.
Background: Obesity is highly stigmatized, with negative obesity-related stereotypes widespread across society. Internalized weight stigma (IWS) is linked to negative outcomes including poor mental health and disordered eating. Previous evidence examining population groups at higher risk of experiencing IWS comes from small, nonrepresentative samples.
View Article and Find Full Text PDFClin Transl Immunology
February 2024
WEHI Parkville VIC Australia.
Objectives: Systemic inflammatory response syndrome (SIRS) is a frequent complication of cardiopulmonary bypass (CPB). SIRS is associated with significant morbidity and mortality, but its pathogenesis remains incompletely understood, and as a result, biomarkers are lacking and treatment remains expectant and supportive. This study aimed to understand the pathophysiological mechanisms driving SIRS induced by CPB and identify novel therapeutic targets that might reduce systemic inflammation and improve patient outcomes.
View Article and Find Full Text PDFEat Behav
August 2023
Department of Clinical and Health Psychology, University of Florida, United States of America.
Introduction: Internalized weight stigma (IWS) is linked to binge eating disorder (BED) symptoms and reduced self-efficacy, yet it unknown how changes in these factors may interrelate. The current study examined cross-sectional and longitudinal associations of BED with IWS and eating self-efficacy among treatment-seeking adults with high body weight. Disinhibited eating was explored as a mediator.
View Article and Find Full Text PDFWater Res
May 2022
Department of Civil and Environmental Engineering, Temple University, Philadelphia, PA, USA. Electronic address:
Internal water storage (IWS), a below-grade saturated layer, is a bioretention design component created by adjusting the underdrain outlet elevation. Anaerobic conditions and the presence of a carbon source in IWS facilitates denitrification. Yet it remains unclear how underdrain height within the IWS impacts nitrate (NO) removal.
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