The lifecycle of wind turbine blades is around 20-25 years. This makes studies on the reuse of dismantled blades an urgent need for our generation; however, their recycling is very difficult due to the specific makeup of their composite material. In this study, the authors determined a concept for the reuse of turbine blade sections filled with concrete for geotechnical structures, retaining the walls, piles, or parts of their foundations.
View Article and Find Full Text PDFThis article presents the results of an experimental study carried out to assess the possibility of using waste wind turbine blades as retaining wall structures for slopes and trenches. The use of Vestas and LM-type blades as retaining wall components was assumed, based on 'columns' made of Vestas-type closed profiles filled with concrete and 'slabs' of fragments extracted from LM-type blades. The results of the tests and comparisons of the displacement and strain values of the components obtained using different measurement methods are presented in this paper.
View Article and Find Full Text PDFThis project's objective was to create a circular economy in the composites sector by examining the possibility of using wind turbine blade composite materials to construct noise-absorbing barriers for roads. The possibility of constructing road noise barrier panels from components obtained from turbine blades was conceptually examined, and the geometry and construction of wind turbine blades were evaluated for their suitability as filler components for panels. The tensile strength parameters of two types of composites made from windmill blades-a solid composite and a sandwich type-were established based on material tests.
View Article and Find Full Text PDFIntroduction: Buprenorphine is used to treat opioid use disorder (OUD). However, therapy is often disrupted during acute pain episodes, and re-initiation is often deferred due to intolerable interruption in opioid analgesics. This case report describes a unique strategy for inducing buprenorphine without stopping opioid analgesics.
View Article and Find Full Text PDFType 2 diabetes mellitus (T2D) poses a significant global health challenge and demands effective self-management strategies, including continuous blood glucose monitoring (CGM) and lifestyle adaptations. While CGM offers real-time glucose level assessment, the quest for minimizing trauma and enhancing convenience has spurred the need to explore non-invasive alternatives for monitoring vital signs in patients with T2D. This systematic review is the first that explores the current literature and critically evaluates the use and reporting of non-invasive wearable devices for monitoring vital signs in patients with T2D.
View Article and Find Full Text PDFIntroduction: Imprecise nutritional recommendations due to a lack of diagnostic test accuracy are a frequent problem for individuals with adverse reactions to foods but no precise diagnosis. Consequently, patients follow very broad and strict elimination diets to avoid uncontrolled symptoms such as diarrhoea and abdominal pain. Dietary limitations and the uncertainty of developing gastrointestinal symptoms after the inadvertent ingestion of food have been demonstrated to reduce the quality of life (QoL) of affected individuals and subsequently might increase the risk of malnutrition and intestinal dysbiosis.
View Article and Find Full Text PDFHearing loss is the most common human sensory deficit. Severe-to-complete sensorineural hearing loss is often treated by electrical cochlear implants (eCIs) bypassing dysfunctional or lost hair cells by direct stimulation of the auditory nerve. The wide current spread from each intracochlear electrode array contact activates large sets of tonotopically organized neurons limiting spectral selectivity of sound coding.
View Article and Find Full Text PDFVery preterm birth is associated with an increased risk for anxiety disorders. Abnormal brain development may result in disordered fear learning processes, which may be exacerbated by environmental risk factors and persist in adulthood. We tested the hypotheses that very preterm-born young adults displayed higher levels of fear conditioning, less differentiation between threat (CS+) and safety (CS-) signals, and stronger resistance to extinction relative to term-born controls.
View Article and Find Full Text PDFBackground: The aim of this study was to compare the incidence of immune reactions and endothelial cell loss after penetrating keratoplasty (PKP) vs. Descemet membrane endothelial keratoplasty (DMEK) in patients with Fuchs endothelial dystrophy (FED).
Patients And Methods: In the present retrospective study, a total of 962 surgeries (225 excimer laser PKP and 727 DMEK) of 700 patients performed between 28.
When hearing fails, electrical cochlear implants (eCIs) partially restore hearing by direct stimulation of spiral ganglion neurons (SGNs). As light can be better confined in space than electrical current, optical CIs (oCIs) provide more spectral information promising a fundamental improvement of hearing restoration by cochlear implants. Here, we turned to computer modelling for predicting the outcome of optogenetic hearing restoration by future oCIs in humans.
View Article and Find Full Text PDFDrug Alcohol Depend
August 2022
Background: Buprenorphine is a life-saving treatment for opioid use disorder (OUD). Low-dose initiation (LDI) is an emerging buprenorphine initiation strategy that circumvents barriers associated with standard initiation. This study aims to describe tolerability and completion of LDI using intravenous (IV) buprenorphine and to define dosing protocols in a cohort of patients hospitalized in an urban academic hospital.
View Article and Find Full Text PDFIn this paper, we study economic growth and its volatility from an episodic perspective. We first demonstrate the ability of the genetic algorithm to detect shifts in the volatility and levels of a given time series. Having shown that it works well, we then use it to detect structural breaks that segment the GDP per capita time series into episodes characterized by different means and volatility of growth rates.
View Article and Find Full Text PDFFor patients with opioid use disorder transitioning from methadone or requiring opioid analgesia, initiating buprenorphine for opioid use disorder can be difficult because of the risk of precipitated withdrawal. Low-dose initiation, also known as micro-dosing, is an alternative to standard initiation. Prior studies relied on nonstandard dosing of tablets or films, patches, or buccal formulations, all of which are unavailable in many hospitals.
View Article and Find Full Text PDFUnlabelled: In a traditional epiglottis biopsy surgery, the operator performs the direct laryngoscopy to visualise an operating field. However, in patients with tumour-altered epiglottis, this procedure can be unsuccessful, because of difficult laryngeal exposure (DLE). This term refers to an insufficient visualisation of larynx, according to anatomical and pathological lesions.
View Article and Find Full Text PDFJ Pediatr Pharmacol Ther
January 2020
Objectives: Clinical practice guidelines for eradication of (PA) in patients with cystic fibrosis (CF) have been established but current studies have not assessed how these guidelines translate into clinical practice. This study aimed to characterize the real-world eradication strategies, eradication rates, and microbiologic outcomes of patients with first acquisition of PA at an urban pediatric CF center.
Methods: The Cystic Fibrosis Foundation Patient Registry was used to identify patients with CF who received care between January 2014 and September 2018 and had PA isolated from an airway culture.
When hearing fails, electrical cochlear implants (eCIs) provide the brain with auditory information. One important bottleneck of CIs is the poor spectral selectivity that results from the wide current spread from each of the electrode contacts. Optical CIs (oCIs) promise to make better use of the tonotopic order of spiral ganglion neurons (SGNs) inside the cochlea by spatially confined stimulation.
View Article and Find Full Text PDFElectrical cochlear implants (eCIs) partially restore hearing and enable speech comprehension to more than half a million users, thereby re-connecting deaf patients to the auditory scene surrounding them. Yet, eCIs suffer from limited spectral selectivity, resulting from current spread around each electrode contact and causing poor speech recognition in the presence of background noise. Optogenetic stimulation of the auditory nerve might overcome this limitation as light can be conveniently confined in space.
View Article and Find Full Text PDFJ Obstet Gynecol Neonatal Nurs
September 2019
Objectives: To generate effect sizes of preliminary program outcomes and identify areas for program improvement related to a nurse-led, community-based screening, referral, and advocacy program for women with perinatal opioid use disorder (OUD): the Engaging Mothers for Positive Outcomes with Early Referrals (EMPOWER) program.
Design: We extracted outcomes retrospectively from medical records for the first 19 mother-newborn dyads who participated in the program (postintervention group). We compared these outcomes with those of 19 randomly selected mother-newborn dyads in which mothers had perinatal OUD and received care before the program launch (preintervention group).
Anti-factor Xa (anti-Xa) monitoring of unfractionated heparin (UFH) is associated with less time to achieve therapeutic anticoagulation compared to the activated partial thromboplastin time (aPTT). However, it is unknown whether clinical outcomes differ between these methods of monitoring. The aim of this research was to compare the rate of venous thrombosis and bleeding events in patients that received UFH monitored by anti-Xa compared to the aPTT.
View Article and Find Full Text PDFBackground: Bronchial stenosis is a known complication of lung transplantation, but there are limited data regarding whether transplant recipients with bronchial stenosis develop more infectious complications than those without bronchial stenosis.
Methods: We conducted a retrospective single-center observational cohort study between January 1, 2011 and September 29, 2016 of 35 lung transplant recipients diagnosed with bronchial stenosis and a random sample of 35 lung transplant recipients without bronchial stenosis. Data collected included donor/recipient demographic and anatomic information, respiratory cultures, episodes of respiratory infections diagnosed using CDC-NNIS criteria, hospitalizations, and 1-year all-cause mortality.
Reconstitution of membrane proteins in artificial membranes is an essential prerequisite for functional studies that depend on the context of an intact membrane. While straight-forward protocols for reconstituting proteins in small unilamellar vesicles were developed many years ago, it is much more difficult to prepare large membranes containing membrane proteins at biologically relevant concentrations. Giant unilamellar vesicles (GUVs) represent a model system that is characterised by low curvature, controllable tension, and large surface that can be easily visualised with microscopy, but protein insertion is notoriously difficult.
View Article and Find Full Text PDFKey Points: Synaptic transmission relies on the recruitment of neurotransmitter-filled vesicles to presynaptic release sites. Increased intracellular calcium buffering slows the recovery from synaptic depression, suggesting that vesicle recruitment is a calcium-dependent process. However, the molecular mechanisms of vesicle recruitment have only been investigated at some synapses.
View Article and Find Full Text PDFObjective: To evaluate the impact of different dissemination channels on the awareness and usage of hospital performance reports among referring physicians, as well as the usefulness of such reports from the referring physicians' perspective.
Data Sources/study Setting: Primary data collected from a survey with 277 referring physicians (response rate = 26.2%) in Nuremberg, Germany (03-06/2016).