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Cost-effective low-volume sample introduction system for open tubular capillary ion chromatography via a hybrid negative pressure approach.
Talanta
March 2025
Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai, 50200, Thailand; Center of Excellence in Materials Science and Technology, Chiang Mai University, Chiang Mai, 50200, Thailand. Electronic address:
Open tubular capillary ion chromatography (OTIC) exhibits a minute sample/eluent volume separation with a low-pressure operation (<30 psi) and potentially develops for a portable analytical device. In this study, a novel and cost-effective low-volume sample-introduction system has been developed for the OTIC and applied for separating water-soluble small inorganic ions. This innovative design uses a hybrid negative pressure (HNP) system, considerably reducing sample consumption to ∼7 μL per injection while maintaining excellent repeatability (<4 % relative standard deviation) on a 50 μm bore capillary tube.
View Article and Find Full Text PDFDoes Cuff Design Impact Insertion and Removal Force of Tracheostomy Tubes? A Bench Model.
Mil Med
November 2023
Department of Research and Development, Respiratory Interventions, Medtronic, Cornamaddy, Athlone, Co. Westmeath N37 E656, Ireland.
Introduction: Percutaneous dilatational tracheostomy is a commonly performed procedure in intensive care units. Unrecognized tracheal ring fracture has been suggested as a possible factor for tracheal stenosis. The degree of tracheal compression relates to the amount of force required to cannulate the trachea.
View Article and Find Full Text PDFImpact of Low-Volume, Low-Pressure Tracheostomy Cuffs on Acute Mucosal Injury in Swine.
Otolaryngol Head Neck Surg
October 2022
Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA.
Objective: Tapered low-volume, low-pressure (LVLP) cuffs have been introduced to improve sealing and reduce injury from tracheostomy and endotracheal intubation compared to traditional cylindrical high-volume, low-pressure (HVLP) cuffs. The objective of this study is to develop a swine model of tracheostomy injury and to compare live tissue response following LVLP and HVLP tracheostomy placement.
Study Design: In vivo animal study.
Consensus Recommendations on the Use of Hyaluronic Acid-Based Fillers for Nonsurgical Nasal Augmentation in Asian Patients.
Plast Reconstr Surg
February 2022
From Expert2Expert; the Division in Anatomy and Developmental Biology, Department of Oral Biology, Yonsei University College of Dentistry; Ayad Harb Aesthetics and Cosmetic Surgery; The Specialists: Lasers, Aesthetic and Plastic Surgery; and Shape Clinic.
Background: Nonsurgical nasal augmentation using dermal fillers such as hyaluronic acid is increasing in popularity because of its less invasive nature and shorter downtime compared with traditional surgery. However, the complexity of the nasal vasculature makes it a high-risk procedure without proper training. Appropriate patient and product selection and safer standardized injection techniques are warranted to minimize complications and to achieve reproducible aesthetic results.
View Article and Find Full Text PDFExternal Condensation of HFE 7000 and HFE 7100 Refrigerants in Shell and Tube Heat Exchangers.
Materials (Basel)
November 2021
Power Engineering Department, Koszalin University of Technology, 75-453 Koszalin, Poland.
The paper describes the results of experimental studies of media as an intermediary in heat exchange taking place in low volume conditions. Their properties predestine them both as a future-proof for transporting and storing heat materials. The paper concerns the current topic related to the miniaturization of cooling heat exchangers.
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