Sökresultat

Filtyp

Din sökning på "*" gav 535331 sökträffar

Sensory evolution : A dazzling hack to cope with bright light in owls and whales

When exposed to sudden changes in light intensity, rod-dominated retinas of animals with highly sensitive dim-vision risk critical damage. A new study finds that owls and deep-diving whales have evolved an identical photoprotection mechanism to delay toxic all-trans retinal release, a discovery with potential medical implications.

Laser-induced, single droplet fragmentation dynamics revealed through megahertz x-ray microscopy

The fragmentation dynamics of single water droplets from laser irradiation is studied with megahertz frame rate x-ray microscopy. Owed to the nearly refraction-free and penetrating imaging technique, we could look into the interior of the droplet and reveal that two mechanisms are responsible for the initial explosive fragmentation of the droplet. First, reflection and diffraction of the laser bea

Comparison between ticagrelor and clopidogrel in myocardial infarction patients with high bleeding risk

Aims Ticagrelor is associated with a lower risk of ischemic events than clopidogrel. However, it is uncertain whether the benefits of more intensive anti-ischemic therapy outweigh the risks of major bleeding in patients who have a high bleeding risk (HBR). Therefore, this study compared ticagrelor and clopidogrel in myocardial infarction (MI) patients with HBR. Methods and results This study inclu

The Impact of the Good Behavior Game on Risk for Drug Use Disorder in an Agent-Based Model of Southern Sweden

Objective: Drug use disorder (DUD) is aworldwide problem, and strategies to reduce its incidence are central to decreasing its burden. This investigation seeks to provide aproof of concept for the ability of agent-based modeling to predict the impact of the introduction of an effective school-based intervention, the Good Behavior Game (GBG), on reducing DUD in Scania, Sweden, primarilythrough incr

Predictive Factors for Delayed Gastric Emptying After Pancreatoduodenectomy : A Swedish National Registry-Based Study

Background: Delayed gastric emptying (DGE) is a common complication after pancreatoduodenectomy (PD). DGE causes prolonged hospital stay and a decrease in quality of life. This study analyzes predictive factors for development of DGE after PD, also in the absence of surgical complications. Method: Data from the Swedish National Pancreatic Cancer Registry for patients undergoing standard and pyloru

Inequalities in care for Iranian women suffering from the comorbidity of substance use and mental illness : The need for integrated treatment

This paper addresses the comorbidity of substance use and mental illness among women in Iran and the barriers they encounter in accessing treatment. Research has demonstrated a higher prevalence of comorbidity of substance use disorders and mental illness among women than men. It has been suggested that women in Iran may face numerous barriers to appropriate care, such as stigma and discrimination

Visual (data) observation in International Relations : Attentiveness, close description, and the politics of seeing differently

Has Visual International Relations (IR) become too distant from the content of visual artefacts? This is a paradoxical question. Visual IR is a vibrant and pluralist field exploring visuals in innumerable ways. Nonetheless, the field tends to focus on 'deep' readings of the socio-political implications of visual artefacts at the expense of a close and attentive observation and description of the e

RURITAGE Deliverable 3.4: RURITAGE Heritage-led regeneration plans for Replicators

This deliverable summarizes the results of the co-development of innovative heritage-led regeneration plans in Replicators and builds on findings and activities coming from WP1-4 and WP7. RURITAGE’s 6 Replicators represent six very diverse rural areas in Europe and beyond (Austria, Norway, Germany, Slovenia, Italy and Turkey) and are acting as the main laboratories to test the RURITAGE approach. B

Grazing effects on vegetation dynamics in the savannah ecosystems of the Sahel

Background: The savannah ecosystems of Sahel have experienced continuous and heavy grazing of livestock for centuries but still, their vegetation response to grazing pressure remains poorly understood. In this study, we analysed the herbaceous plant dynamics, measured by species diversity, composition, cover, and biomass in response to grazing pressure in the savannah ecosystems of Sahel. In Seneg

High-Target Hemodiafiltration Convective Dose Achieved in Most Patients in a 6-Month Intermediary Analysis of the CONVINCE Randomized Controlled Trial

Introduction: High convection volumes in hemodiafiltration (HDF) result in improved survival; however, it remains unclear whether it is achievable in all patients. Methods: CONVINCE, a randomized controlled trial, randomized patients with end-stage kidney disease 1:1 to high-dose HDF versus high-flux hemodialysis (HD) continuation. We evaluated the proportion of patients achieving high-dose HDF ta

Monitoring Atmospheric Atomic Mercury by Optical Techniques

Mercury is a serious neurotoxic agent, and the control and monitoring of emissions are important. Optical spectroscopy is a powerful technique for measurement of mercury, which in the atmosphere predominantly appears in atomic form. The mercury resonance line close to 254 nm can be utilized in long-path absorption measurements of average concentrations or in light detection and ranging (lidar) stu

Selection, characterization and in vivo evaluation of novel CD44v6-targeting antibodies for targeted molecular radiotherapy

Molecular radiotherapy combines the advantages of systemic administration of highly specific antibodies or peptides and the localized potency of ionizing radiation. A potential target for molecular radiotherapy is the cell surface antigen CD44v6, which is overexpressed in numerous cancers, with limited expression in normal tissues. The aim of the present study was to generate and characterize a pa

Impacts of Collective Communication on the Energy Flexibility and Climate Resilience of Buildings in Urban Areas

A novel approach for demand side management (DSM) in urban areas was introduced previously based on collective intelligence (CI), called CI-DSM. It was shown that CI-DSM can enhance energy flexibility and climate resilience in urban areas while having a simple communication logic and light computation. The communication signal (0 or 1) is (gradually) distributed among the agents in the energy syst

Lignin Extraction by Using Two-Step Fractionation : A Review

Lignocellulosic biomass represents the most abundant renewable carbon source on earth and is already used for energy and biofuel production. The pivotal step in the conversion process involving lignocellulosic biomass is pretreatment, which aims to disrupt the lignocellulose matrix. For effective pretreatment, a comprehensive understanding of the intricate structure of lignocellulose and its compo

Anionic nanoplastic contaminants promote Parkinson’s disease–associated α-synuclein aggregation

Recent studies have identified increasing levels of nanoplastic pollution in the environment. Here, we find that anionic nanoplastic contaminants potently precipitate the formation and propagation of α-synuclein protein fibrils through a high-affinity interaction with the amphipathic and non-amyloid component (NAC) domains in α-synuclein. Nanoplastics can internalize in neurons through clathrin-de

Lung Fibroblasts from Chronic Obstructive Pulmonary Disease Subjects Have a Deficient Gene Expression Response to Cigarette Smoke Extract Compared to Healthy

BACKGROUND AND AIM: Cigarette smoking is the most common cause of chronic obstructive pulmonary disease (COPD) but more mechanistic studies are needed. Cigarette smoke extract (CSE) can elicit a strong response in many COPD-related cell types, but no studies have been performed in lung fibroblasts. Therefore, we aimed to investigate the effect of CSE on gene expression in lung fibroblasts from hea

Dynamical exchange-correlation potential formalism for spin- 12 Heisenberg and Hubbard chains : The antiferromagnetic/half-filled case

The exchange-correlation potential formalism previously introduced and applied to the one-dimensional Hubbard model has been extended to spin systems and applied to the case of the one-dimensional antiferromagnetic spin-12 Heisenberg model. Within the spin exchange-correlation potential formulation, a sum rule for spin systems is derived. The exchange-correlation potential for the Heisenberg model