Building Additional Passageways in Polyamide Membranes with Hydrostable Metal Organic Frameworks To Recycle and Remove Organic Solutes from Various Solvents. | LitMetric
MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P.R. China.
Published: November 2017
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Article Abstract
Membrane separation is a promising technology for extracting temperature-sensitive organic molecules from solvents. However, a lack of membrane materials that are permeable toward organic solvents yet highly selective curtails large-scale membrane applications. To overcome the trade-off between flux and selectivity, additional molecular transportation pathways are constructed in ultrathin polyamide membranes using highly hydrostable metal organic frameworks with diverse functional surface architectures. Additional passageways enhance water permeance by 84% (15.4 L m h bar) with nearly 100% rose bengal rejection and 97.6% azithromycin rejection, while showing excellent separation performance in ethyl acetate, ketones, and alcohols. These unique composite membranes remain stable in both aqueous and organic solvent environments. This immediately finds application in the purification of aqueous mixtures containing organic soluble compounds, such as antibiotics, during pharmaceutical manufacturing.
Introduction: RefluxStop is an implantable device for laparoscopic surgical treatment of gastroesophageal reflux disease (GERD) to restore and maintain lower esophageal sphincter and angle of His anatomy without encircling and putting pressure on the food passageway, thereby avoiding side effects such as dysphagia and bloating seen with traditional fundoplication. This study reports the clinical outcomes with RefluxStop at 4 years following implantation of the device.
Methods: A prospective, single arm, multicenter clinical investigation analyzing safety and effectiveness of the RefluxStop device in 50 patients with chronic GERD.
An esophagobronchial fistula, an abnormal passageway formed between the esophagus and bronchus, can cause severe respiratory symptoms. This fistula is a complication that can occur during chemoradiotherapy for esophageal and lung cancers; however, to our knowledge, no esophagobronchial fistulas during preoperative chemotherapy for lung cancer have been reported. The patient was a 55-year-old man whose chest computed tomography (CT) revealed a mass on the dorsal bronchus and right side of the esophagus.
Maxillary movements performed during orthognathic surgery affect the external and internal anatomy of the nose. The functional and anatomical effects may change nasal airway parameters after the surgery, and these alterations can be examined objectively by rhinomanometry. In this study, patients who underwent maxillary orthognathic surgery were divided into 3 groups based on their surgical plans: advancement (group 1), impaction and advancement (group 2), and setdown and advancement (group 3).
Tricuspid valve disease is an often underrecognized clinical problem that is associated with significant morbidity and mortality. Unfortunately, patients will often present late in their disease course with severe right-sided heart failure, pulmonary hypertension, and life-limiting symptoms that have few durable treatment options. Traditionally, the only treatment for tricuspid valve disease has been medical therapy or surgery; however, there have been increasing interest and success with the use of transcatheter tricuspid valve therapies over the past several years to treat patients with previously limited therapeutic options.
The crucial aspect of the medical sector is healthcare in today's modern society. To analyze a massive quantity of medical information, a medical system is necessary to gain additional perspectives and facilitate prediction and diagnosis. This device should be intelligent enough to analyze a patient's state of health through social activities, individual health information, and behavior analysis.
