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Perioperative management of patients undergoing major reconstructive head and neck surgery

Abstract: For patients with locally advanced head and neck tumours or other defects, the preferred curative treatment is extensive reconstructive surgery using free microvascular flap(s), oftentimes followed by postoperative radiotherapy. The procedure offers superior functional and aesthetic advantages, but the treatment course is long and complex and burdened with a significant risk of complicat

Smart‐Mix or Stupid Assurances? : How Businesses Used Voluntary Initiatives to (De)Legitimize Supply Chain Regulation

Mandatory human rights and environmental due diligence (HREDD) policies seem to represent a pathbreaking shift from voluntary measures to binding rules for global supply chains. Yet these policies endorse a “smart-mix” of voluntary and mandatory measures, and risk over-reliance on questionable private-sector assurances. In this paper, we ask how businesses framed these private/voluntary efforts in

The evolution of executive functions in Archosauria : Visual working memory and motor inhibition across ectotherms and endotherms

Executive functions are a set of cognitive skills enabling goal‑directed behaviours. Both mammals and birds have highly proficient executive functions, despite diverging from each other around 360 million years ago. This cognitive convergence is due to both taxa being tachymetabolic endotherms. They can maintain a stable and elevated body temperature with a high metabolism. However, in order to su

Large-eddy simulations of separated flow and heat transfer in a rib-roughened channel

Ribbed channel flows play a crucial role in various engineering systems where turbulence enhancement and improved heat transfer are required, such as in turbine blade cooling and combustor wall applications. Numerical simulations have emerged as an essential tool for analyzing the intricate turbulence dynamics and flow separation phenomena, which are fundamental for optimizing the channel performa

Diamond rotors for high magic angle spinning frequencies

Magic Angle Spinning (MAS) nuclear magnetic resonance (NMR) spectroscopy is limited in spectral resolution by the spinning frequency of rotors that hold the analyte. Traditional yttria-stabilized zirconia (YSZ) rotors have mechanical constraints that typically limit spinning frequencies of 0.7 mm rotors to ωr/2π ∼ 110 kHz. These frequencies are not sufficient to achieve resolution comparable to th

Phase dependent luminescence properties of Pr3+ doped BaLu2F8–BaLuF5 materials

This work presents a comparative luminescence study of Pr3+ doped phase-pure BaLuF5 and mixed-phase BaLu2F8 – BaLuF5 materials synthesized via a hydrothermal route. The spectroscopic studies were mainly performed for phase-pure BaLuF5 and two mixed-phase materials, which, according to structural and phase compositional analysis, contained 90 or 70 wt% of orthorhombic BaLu2F8 and 10 or 30 wt% of cu

The potential role of Staphylococcal enterotoxin C and TSST-1 in the infection of bovine mammary epithelial cells

Bovine mastitis is a continuous problem in the dairy industry. The infection has significant impact on health and welfare of animals and causes financial losses for the farmers and the dairy industry. A key bacterium associated with bovine mastitis is Staphylococcus aureus (S. aureus). It produces different exotoxins including more than 24 different staphylococcal enterotoxins and toxic shock synd

Exploring suicidal behaviour through implicit identity and control biases : Findings from the Death-Implicit Association Test and its novel control-adaptation

Objective: This study examined two Death-Implicit Association Test versions targeting associations between the self-concept (standard identity D-IAT; iD-IAT) and internal versus external control (adapted control D-IAT; cD-IAT) and death among suicide attempters. Additionally, correlations with explicit psychological variables and psychometrics were explored. Method: 116 psychiatric inpatients (58.

Surgical Education, Evaluating selection methods and early training experiences in surgical residency

Background Selection of surgical residents is carried out in a variety of ways across the globe. In Sweden, the selection process is characterized by a lack of transparency and is conducted locally at each hospital. Recruiting suitable candidates is a matter of patient safety since patient outcome is related to surgeon characteristics and behaviors.Aim The aim of this thesis is to explore quantita

Exciton states and relaxation in molecular aggregates : Numerical study of photosynthetic light harvesting

In this article we briefly review the molecular exciton theory and apply it to photosynthetic light harvesting systems. We derive expressions for exciton relaxation rates using perturbation theory in Hibert space representation and show how the Förster equation can be obtained from a general relaxation rate expression in case of well localized excitons. A detailed analysis of the exciton level str

Excitons in photosynthetic purple bacteria : Wavelike motion or incoherent hopping?

We have studied excitation energy transfer in the photosynthetic antenna systems LH1 and LH2 of purple bacteria. Femtosecond pump−probe experiments are combined with computer simulations using the recently established crystal structure of these systems to assess the nature of excitation motion. We have measured the transient absorption kinetics and spectra of the LH1 and LH2 complexes in the t

Technologies Supporting Engagement in Everyday Activities in Later Life

The global demographic is experiencing a significant increase in the ageing population, andsimultaneously, technological advancements continue to reshape society. These trends highlight anurgent need and a unique opportunity to leverage technology. Smart home technology (SHT), welfaretechnology (WT), and wearable sensors can potentially support older adults in everyday activities.However, the deve

Research progress of transient absorption spectroscopy in solar energy conversion and utilization

With the development of ultrafast laser technology, time-resolved spectroscopy has become an essential tool to study the microscopic photophysical mechanisms on ultrafast time scales in the field of solar energy conversion and utilization. Transient absorption spectroscopy (TAS), as an essential technology for studying photoinduced ultrafast electron transfer and photo-induced carrier dynamics, ha

Diffusion MRI in the cortex of the brain : Reducing partial volume effects from CSF and white matter in the mean diffusivity using high b-values and spherical b-tensor encoding

Purpose: The mean diffusivity (MD) is sensitive to the microstructure of the cortex. However, partial volume effects with CSF and white matter (WM) may obscure pathology-related alterations. This work investigates both existing approaches and a novel approach for reducing partial volume effects. Theory and Methods: A bias in MD arises due to partial volume effects, higher-order terms, and the nois

Effects of salinisation on Cu-contaminated vineyard soils : Assessment of changes in microbial communities and resistance to salt, Cu, and antibiotics

Climate change increases the risk of soil salinisation in Southern European vineyards. In this study, six of those soils were experimentally salinised, half of which were contaminated with Cu, a widely used fungicide. Changes in soil microbiota were assessed, including bacterial and fungal growth, respiration, carbon use efficiency calculation, and microbial community phospholipid fatty acids comp

Under the gaze of the 'big nations' : Refugees, rumours and the international community in Tanzania

In most academic literature refugees are portrayed either as those who lack what national citizens have or as a threat to the national order of things. This article explores the effects of being excluded in such a way, and argues that Burundian refugees in a camp in northwest Tanzania find themselves in an ambiguous position, being excluded from the national order of things - secluded in the Tanza