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A new insight on simultaneous water purification and greenhouse gas reduction by constructing sulfur-siderite driven autotrophic denitrification pathways in constructed wetlands.
Water Res
January 2025
College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, Shandong, China; Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, Shandong, China. Electronic address:
Sulfur-siderite driven autotrophic denitrification (SSAD) has received increasing attention for nutrient removal in constructed wetlands (CWs). Nevertheless, its effectiveness in simultaneous water purification and greenhouse gases (GHGs) reduction remains obscure. In this study, three vertical flow constructed wetlands (VFCWs), filled with quartz sand (CCW), sulfur (S-CW), and sulfur-siderite mixed substrates (SS-CW), were constructed to investigate the underlying mechanisms of SSAD on water purification enhancement and GHGs reduction.
View Article and Find Full Text PDFEx vivo detection of recreational consumed nitrous oxide in exhaled breath.
Sci Rep
January 2025
Dep. Oral Biochemistry, Academic Centre for Dentistry Amsterdam, University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, 1081, LA, The Netherlands.
The increasing use of recreational nitrous oxide ([Formula: see text]O) in the Netherlands and its link to traffic accidents highlights the need for reliable detection methods for law enforcement. This study focused on ex vivo detection of [Formula: see text]O in exhaled breath and examining its persistence in the human body. Firstly, a low-cost portable infrared based detector was selected and validated to detect [Formula: see text]O in air.
View Article and Find Full Text PDFQuantification of denitrification rate in shallow groundwater using the single-well, push-pull test technique.
J Contam Hydrol
January 2025
Environmental Science, School of Agriculture and Environment, Massey University, Private Bag 11 222, Palmerston North 4442, New Zealand.
Denitrification has been identified as a significant nitrate attenuation process in groundwater systems. Hence, accurate quantification of denitrification rates is consequently important for the better understanding and assessment of nitrate contamination of groundwater systems. There are, however, few studies that have investigated quantification of shallow groundwater denitrification rates using different analytical approaches or assuming different kinetic reaction models.
View Article and Find Full Text PDFImproving Patient Satisfaction With Inhalation Sedation: A Service Evaluation of Paediatric Patients at a Primary Care Referral Centre in the United Kingdom.
Cureus
December 2024
Paediatrics, Birmingham Community Healthcare NHS Foundation Trust, Birmingham, GBR.
Introduction This report explores patient satisfaction in a dental sedation service in primary care for paediatric patients. The study explores different behavioural management techniques and additional supportive aids as adjuncts to inhalation sedation to improve patient satisfaction. Aim and objective To determine patient satisfaction with pre-assessment, treatment and aftercare in inhalation sedation services in primary care.
View Article and Find Full Text PDFA randomized controlled trial comparing immersive virtual reality games versus nitrous oxide for pain reduction in common outpatient procedures in pediatric surgery.
Trials
January 2025
Department of Pediatric Surgery, Inselspital University Hospital, Bern, CH, 3010, Switzerland.
Background: Children often experience anxiety and pain during minor surgical procedures, prompting the search for effective pain management strategies beyond traditional pharmaceutical approaches. This study aims to evaluate the efficacy of virtual reality (VR) as a pain reduction method in pediatric outpatient surgical interventions compared to the standard use of nitrous oxide. The research questions explore pain reduction levels, patient preferences, enjoyment during VR use, and the time limit of the VR application.
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