Fast and accurate representation of heat transfer in laser powder-bed fusion of metals (PBF-LB/M) is essential for thermo-mechanical analyses. As an example, it benefits the detection of thermal hotspots at the design stage. While traditional physics-based numerical approaches such as the finite element (FE) method are applicable to a wide variety of problems, they are computationally too expensive for PBF-LB/M due to the space- and time-discretization requirements.
View Article and Find Full Text PDFJ Ethn Migr Stud
August 2024
State authorities in Europe invest immense resources in what the EU insists on calling the 'fight against illegal migration'. Based on ethnographic research in two German cities, this paper shows that a tough approach towards illegalised migration can only be implemented through state practices that operate at the margins of, or even cross, the boundaries of what is legally permissible. This argument is developed through an analysis of informal practices that frontline staff in registry offices and migration administrations deploy to prevent, or at least disturb, illegalised migrants' attempts to regularise their status by becoming the parent of child that is entitled to German citizenship.
View Article and Find Full Text PDFWhile progress has been made in recent years, there are still no suitable and accepted , or models that can be used to accurately predict whether a chemical substance has the intrinsic property to cause immune-mediated chemical respiratory allergy, typically manifested as allergic asthma or allergic rhinitis which represents a severe health hazard. Regulatory authorities have relied primarily on clinical evidence (case reports, clinical databases, worker exposure studies) to classify substances as respiratory sensitizers, but this evidence can lack a proven immunological mechanism which is necessary to identify substances which can cause life-long sensitization and clinically relevant allergic symptoms in the respiratory tract in an exposed population (such respiratory allergens may be considered as "true" sensitizers, in analogy to the definition of skin sensitization, and in contrast to respiratory irritants). In light of this, the European Center for Ecotoxicology and Toxicology of Chemicals convened a Task Force to evaluate the types of clinical methods and data sources and the implications of relying on such data for regulatory decision making from a scientific perspective.
View Article and Find Full Text PDFInt J Cardiol Congenit Heart Dis
September 2024
Background: The Norwood operation (NO) for infants with univentricular physiology has high interstage mortality. This study evaluated outcomes and risk factors for mortality following NO.
Methods: Retrospective single-center study of patients undergoing NO from 2010 to 2020.
Background: Patients requiring extracorporeal life support (ECLS) support post-Norwood operation constitute an extremely high-risk group.
Materials And Methods: We retrospectively aimed to evaluate the relationship of hyperoxia with mortality and other clinical outcomes in patients who required ECLS following Norwood operation between January/2010 and December/2020 in a large volume center.
Results: During the study period 65 patients required ECLS post-Norwood.
To improve reliability of metabolite quantification at both, 3 T and 7 T, we propose a novel parametrized macromolecules quantification model (PRaMM) for brain H MRS, in which the ratios of macromolecule peak intensities are used as soft constraints. Full- and metabolite-nulled spectra were acquired in three different brain regions with different ratios of grey and white matter from six healthy volunteers, at both 3 T and 7 T. Metabolite-nulled spectra were used to identify highly correlated macromolecular signal contributions and estimate the ratios of their intensities.
View Article and Find Full Text PDFIn patients with pancreatic ductal adenocarcinoma (PDAC), intratumoural and intertumoural heterogeneity increases chemoresistance and mortality rates. However, such morphological and phenotypic diversities are not typically captured by organoid models of PDAC. Here we show that branched organoids embedded in collagen gels can recapitulate the phenotypic landscape seen in murine and human PDAC, that the pronounced molecular and morphological intratumoural and intertumoural heterogeneity of organoids is governed by defined transcriptional programmes (notably, epithelial-to-mesenchymal plasticity), and that different organoid phenotypes represent distinct tumour-cell states with unique biological features in vivo.
View Article and Find Full Text PDFBackground: Arrhythmogenic right ventricular cardiomyopathy (ARVC) increases the risk of heart failure (HF) and arrhythmias. Speckle-tracking echocardiography (STE) detects myocardial dysfunction, but its predictive role for HF in this population remains unclear.
Methods: Seventy-one patients with ARVC (age 43.
Background Climate change, driven primarily by human-induced greenhouse gas (GHG) emissions, poses major risks to human health. Health care contributes 8.5% of GHG emissions in the United States.
View Article and Find Full Text PDFPatient sexuality and intimacy comprise important dimensions of quality of life (QOL), making them essential topics for palliative care (PC) clinicians to address. Created with interprofessional input from PC, urology, gynecology, sexual health, oncology, psychiatry, psychology, nursing, and social work, this article offers 10 high-yield, evidence-based tips to better equip PC clinicians to address sexuality and intimacy for patients with serious illness. These tips highlight skills such as opening discussions, assessing concerns through a biopsychosocial model, and thinking through appropriate interventions to improve QOL.
View Article and Find Full Text PDFOur recently published K1N2-score robustly predicts KEAP1/NFE2L2-mutations and pathway activation status, while its accessibility might be limited. We tested if the RNA expression data of six pathway-related genes and NQO1-IHC might be a reliable alternative using 348 KEAP1/NFE2L2 mutation-enriched NSCLC. While TXNRD1 RNA testing was the best-performing single-gene test, the combination of single-gene screening and validation with the K1N2-score achieved the highest performance when predicting mutation status or pathway activation.
View Article and Find Full Text PDFThe discrimination between pre and postcapillary exercise-induced pulmonary hypertension relies on accurate measurement of pulmonary capillary wedge pressure, which can be unreliable. We found that exercise pulmonary artery compliance and right atrial pressure (AUC 0.88, 0.
View Article and Find Full Text PDFHow the temporal dynamics of social interactions are perceived arguably plays an important role in how one engages in social interactions and how difficulties in establishing smooth social interactions may occur. One aspect of temporal dynamics in social interactions is the mutual coordination of individuals' behaviors during social interaction, otherwise known as behavioral interpersonal synchrony (IPS). Behavioral IPS has been studied increasingly in various contexts, such as a feature of the social interaction difficulties inherent to autism.
View Article and Find Full Text PDFPurpose: To identify the impact of endovascular simulator training and shadowing in interventional radiology on medical students' self-assessed IR knowledge. Moreover, the sequence of the teaching methods and its influence on the self-assessed IR knowledge is investigated.
Materials And Methods: A total of 19 fourth-year medical students participated in this study.
Psychological symptoms are notably prevalent in palliative care (PC) settings, significantly impacting quality of life for patients and their families. Given the inherent multidimensionality of suffering in PC, addressing these psychological aspects is essential. This article aims to introduce and integrate discrete concepts from various schools of psychotherapy, which are directly applicable to PC practices, thereby providing clinicians with a rich toolkit to manage psychological distress.
View Article and Find Full Text PDFPurpose: This observational study aims to provide a detailed clinical and imaging characterization/workup of acute intracerebral hemorrhage (ICH) due to either an underlying metastasis (mICH) or brain tumor (tICH) lesion.
Methods: We conducted a retrospective, single-center study, evaluating patients presenting with occult ICH on initial CT imaging, classified as tICH or mICH on follow-up MRI imaging according to the H-Atomic classification. Demographic, clinical and radiological data were reviewed.
Familial dysautonomia (FD) is a rare sensory and autonomic neuropathy that results from a mutation in the gene. Virtually all patients report gastrointestinal (GI) dysfunction and we have recently shown that FD patients have a dysbiotic gut microbiome and altered metabolome. These findings were recapitulated in an FD mouse model and moreover, the FD mice had reduced intestinal motility, as did patients.
View Article and Find Full Text PDFContext.—: Recently, a new type of antibody-drug conjugate, trastuzumab-deruxtecan (T-DXd), has been approved for the treatment of metastatic breast cancer with low level of human epidermal growth factor receptor 2 (HER2) gene expression. Thereby, eligibility relies on an accurate diagnosis of HER2-low status defined by immunohistochemistry IHC 1+/2+ with no gene amplification.
View Article and Find Full Text PDFRooted in dynamic systems theory, convergent cross mapping (CCM) has attracted increased attention recently due to its capability in detecting linear and nonlinear causal coupling in both random and deterministic settings. One limitation with CCM is that it uses both past and future values to predict the current value, which is inconsistent with the widely accepted definition of causality, where it is assumed that the future values of one process cannot influence the past of another. To overcome this obstacle, in our previous research, we introduced the concept of causalized convergent cross mapping (cCCM), where future values are no longer used to predict the current value.
View Article and Find Full Text PDFMicropollutants are increasingly prevalent in the aquatic environment. A major part of these originates from wastewater treatment plants since traditional treatment technologies do not remove micropollutants sufficiently. Moving bed biofilm reactors (MBBRs), however, have been shown to aid in micropollutant removal when applied to conventional wastewater treatment as a polishing step.
View Article and Find Full Text PDFWe report a case of severe hypertriglyceridemia (HTG) complicated by hyperviscosity syndrome as a possible adverse reaction to risankizumab-rzaa in a 49-year-old male with a history of longstanding uncontrolled type 2 diabetes, obesity, and coronary artery disease with prior ST-elevation myocardial infarction. On admission, the patient presented with xanthomatous plaques, chest and epigastric discomfort, and headache. Subsequent blood testing revealed severely elevated triglyceride (TG) levels at 7670 mg/dL (86.
View Article and Find Full Text PDF