Search results

Filter

Filetype

Your search for "*" yielded 533488 hits

Endovascular therapy in basilar artery occlusion in Sweden 2016–2019—a nationwide, prospective registry study

Purpose: We present the first nationwide study on endovascular therapy for basilar artery occlusion (BAO) from early hospital management to 3-month outcome. Methods: Data were collected on all acute ischaemic stroke patients registered 2016–2019 in the two national quality registers for stroke care and endovascular therapy (EVT), receiving EVT for BAO and subclassified into proximal, middle and di

A comparison between endostatin and conventional biomarkers on 30-day mortality and renal replacement therapy in unselected intensive care patients

Endostatin may predict mortality and kidney impairment in general populations as well as in critically ill patients. We decided to explore the possible role of endostatin as a predictor of 30-day mortality, acute kidney injury (AKI), and renal replacement therapy (RRT) in a cohort of unselected intensive care unit (ICU) patients. Endostatin and creatinine in plasma were analyzed and SAPS3 was dete

Glucose and glycerol transport in adipocytes from a structural perspective

Adipocytes are crucial energy reservoirs to maintain metabolic homeostasis of glucose and lipids in the human body.Glucose transporters (GLUTs) and aquaporins (AQPs) play an important role in metabolic regulation of glucose andlipids in human adipocytes. Specifically, glucose transporter 4 (GLUT4) and aquaporin 7 (AQP7) are the centralplayers for glucose transport and glycerol efflux in adipocytes

Rapid and facile purification of apolipoprotein A-I from human plasma using thermoresponsive nanoparticles

Nanoparticles can be used to purify proteins from plasma. We report here the purification of apolipoprotein A-I (apoA-I) with high specificity from human plasma using copolymeric nanoparticles. We present an optimized protocol using 50:50 NiPAM:BAM copolymer nanoparticles with thermo-responsive properties as an affinity resin. Repeated pelleting and washing of nanoparticle-captured apoA-I is achie

Urbanization extends flight phenology and leads to local adaptation of seasonal plasticity in Lepidoptera

Urbanization is gaining force globally, which challenges biodiversity, and it has recently also emerged as an agent of evolutionary change. Seasonal phenology and life cycle regulation are essential processes that urbanization is likely to alter through both the urban heat island effect (UHI) and artificial light at night (ALAN). However, how UHI and ALAN affect the evolution of seasonal adaptatio

Urinary diversions for benign and oncologic indications: what did we learn about short term complications in the last 24 months?

PURPOSE OF REVIEW: Urinary diversion (UD) with or without cystectomy is a procedure with high short term complication rates. In this review, we summarize the most relevant findings of the last 2 years. RECENT FINDINGS: The use of a prophylactic mesh decreases the risk of parastomal hernia after ileal conduit (IC) surgery without adding mesh-related complications according to a recent randomized mu

Cell‐permeable succinate rescues mitochondrial respiration in cellular models of amiodarone toxicity

Amiodarone is a potent antiarrhythmic drug and displays substantial liver toxicity in hu-mans. It has previously been demonstrated that amiodarone and its metabolite (desethylamioda-rone, DEA) can inhibit mitochondrial function, particularly complexes I (CI) and II (CII) of the elec-tron transport system in various animal tissues and cell types. The present study, performed in human peripheral blo

Reversal of apolipoprotein E4-dependent or chemical-induced accumulation of APP degradation products by vitamin C-induced release of heparan sulfate from glypican-1

The Apolipoprotein E4 (ApoE4) genotype is the most influential risk factor for sporadic Alzheimer's disease. It appears to be associated with retarded endosome-to-autophagosome trafficking. The amyloid precursor protein (APP) and the heparan sulfate (HS)-containing proteoglycan glypican-1 (Gpc-1) are both processed in endosomes, and mutually regulated by the APP degradation products and the releas

Co-benefits from sustainable dietary shifts for population and environmental health : an assessment from a large European cohort study

Background: Unhealthy diets, the rise of non-communicable diseases, and the declining health of the planet are highly intertwined, where food production and consumption are major drivers of increases in greenhouse gas emissions, substantial land use, and adverse health such as cancer and mortality. To assess the potential co-benefits from shifting to more sustainable diets, we aimed to investigate

Efficacy of catheter ablation for atrial arrhythmias in patients with arrhythmogenic right ventricular cardiomyopathy—a multicenter study

Background: Atrial arrhythmias are present in up to 20% of patients with arrhythmogenic right ventricular cardiomyopathy (ARVC). Catheter ablation (CA) is an effective treatment for atrial arrhythmias in the general population. Data regarding CA for atrial arrhythmias in ARVC are scarce. Objective: To assess the safety and efficacy of CA for atrial arrhythmias in patients with ARVC. Methods: In th

Advanced Bladder Cancer. Aspects of Diagnosis and Treatment.

Treatment of bladder cancer has seen few advancements in recent decades until the introduction of checkpoint inhibitors during the last few years. Bladder cancer diagnostics have been similarly impaired and the likely advent of novel treatments in the neoadjuvant setting will require new diagnostic tools in the preoperative setting in muscleinvasive bladder cancer.This thesis evaluates three diagn

Neural-Network-Assisted UE Localization Using Radio-Channel Fingerprints in LTE Networks

In this paper, a novel fingerprint-based localization technique is proposed, which is applicable for positioning user equipments (UEs) in cellular communication networks such as the long-term-evolution (LTE) system. This technique utilizes a unique mapping between the characteristics of a radio channel formulated as a fingerprint vector and a geographical location. A feature-extraction algorithm i

Modeling City-Canyon Pedestrian Radio Channels Based on Passive Sounding in In-Service Networks

Recently, a measurement campaign for characterizing time-variant radio channels in city-canyon environments was conducted along a 2-km-long pedestrian shopping street in Shanghai. A passive sounding approach was adopted where a software-defined-radio platform is used as a receiver (Rx) to record downlink signals transmitted by base stations (BSs) in an in-service Universal Mobile Telecommunication

Tunnel and non-tunnel channel characterization for high-speed-train scenarios in LTE-A Networks

In this contribution, a measurement campaign for high- speed-train (HST) channel is introduced where the down- link signals of in-service Long Time Evolution-Advanced (LTE-A) network deployed along the HST railway between Beijing to Shanghai are acquired. Channel impulse responses (CIRs) are extracted from received signals, and concatenated power delay profiles (CPDPs) are illustrated. According t

Measurement-based stochastic models for channel transition in underground subway environments

In this contribution, a recently conducted measurement campaign in underground subway environments is introduced. The downlink signals in an in-service UMTS network are collected in the subway carriage by using an Universal Software-defined Radio Peripheral (USRP) equipment and used to extract the channel impulse responses (CIRs) between a user equipment and UMTS stations. A high-resolution parame

Phase-Compensated Optical Fiber-Based Ultrawideband Channel Sounder

In this article, a novel vector network analyzer (VNA)-based ultrawideband (UWB) channel sounder using radio-over-fiber (RoF) techniques is presented. Benefiting from the usage of optical fiber cable, the measurement range and the dynamic range are significantly increased compared with the conventional coaxial-based VNA system. Specifically, using RoF increases the dynamic range to a maximum of 11

Low Altitude Air-to-Ground Channel Characterization in LTE Network

Low altitude unmanned aerial vehicle (UAV)-aided applications are promising in the future generation communication systems. In this paper, a recently conducted measurement campaign for characterizing the low-altitude air-to-ground (A2G) channel in a typical Long Term Evolution (LTE) network is introduced. Five horizontal flights at the heights of 15, 30, 50, 75, and 100 m are applied, respectively

An empirical air-to-ground channel model based on passive measurements in LTE

In this paper, a recently conducted measurement campaign for unmanned-aerial-vehicle channels is introduced. The downlink signals of an in-service long-time-evolution network, which is deployed in a suburban scenario were acquired. Five horizontal and five vertical flight routes were considered. The channel impulse responses (CIRs) are extracted from the received data by exploiting the cell-specif

Children’s experiences of their learning environment : Psychometric properties of a questionnaire evaluating classroom environment, activities and interactions

The present study reports on the development of a questionnaire that evaluates children's experiences of their physical classroom environment, activities and interactions. It also explores the psychometric properties of the questionnaire and how acoustical characteristics of the classroom, class size and student characteristics (age, sex and Swedish as a second language) influence the self-reporte