Sökresultat

Filtyp

Din sökning på "*" gav 535905 sökträffar

Application of extreme gradient boosting and parallel random forest algorithms for assessing groundwater spring potential using DEM-derived factors

Groundwater (GW) resources provide a large share of the world's water demand for various sections such as agriculture, industry, and drinking water. Particularly in the arid and semi-arid regions, with surface water scarcity and high evaporation, GW is a valuable commodity. Yet, GW data are often incomplete or nonexistent. Therefore, it is a challenge to achieve a GW potential assessment. In this

ASCL1 promotes tumor progression through cell-autonomous signaling and immune modulation in a subset of lung adenocarcinoma

The master regulator of neuroendocrine differentiation, achaete-scute complex homolog 1 (ASCL1) defines a subgroup of lung adenocarcinoma. However, the mechanistic role of ASCL1 in lung tumorigenesis and its relation to the immune microenvironment is principally unknown. Here, the immune landscape of ASCL1-positive lung adenocarcinomas was characterized by immunohistochemistry. Furthermore, ASCL1

Electron channelling : challenges and opportunities for compositional analysis of nanowires by TEM

Energy dispersive x-ray spectroscopy in a transmission electron microscope is often the first method employed to characterize the composition of nanowires. Ideally, it should be accurate and sensitive down to fractions of an atomic percent, and quantification results are often reported as such. However, one can often get substantial errors in accuracy even though the precision is high: for nanowir

Imbalance of the oxytocin-vasopressin system contributes to the neuropsychiatric phenotype in the BACHD mouse model of Huntington disease

Neuropsychiatric disturbances with altered social cognition, depression and anxiety are among the most debilitating early features in the fatal neurodegenerative disorder Huntington disease (HD) which is caused by an expanded CAG repeat in the huntingtin gene. The underlying neurobiological mechanisms are not known. Neuropathological analyses of postmortem human HD hypothalamic tissue have demonst

Story-dismantling, story-meandering, and story-confirming : Organizational identity work in times of public disgrace

This study aims to enhance our understanding of organizational identity work (OIW), building upon previous studies’ emphasis on the usefulness of understanding OIW in terms of storytelling. The paper offers an extended vocabulary for making sense of alternative narration forms. Based on an in-depth study of a humanitarian organization in Sweden, the discursive OIW struggles of employees in times o

Severe retinitis pigmentosa phenotype associated with novel CNGB1 variants

Purpose: To report a severe phenotype of retinitis pigmentosa associated with novel mutations in CNGB1. Observations: Six siblings, age range 50–75 years old, were examined using optical coherence tomography and fundus autofluorescene, electroretinogram testing, Goldman visual field testing, and genetic testing using next generation sequencing. In four affected siblings, two novel compound heteroz

Polymorphism in killer cell immunoglobulin-like receptors and human leukocyte antigen-c and predisposition to preeclampsia in Ethiopian pregnant women population

Introduction: Preeclampsia (PE) is a human specific pregnancy-related syndrome of unknown etiology that affects 2–8 % of pregnancies. Polymorphism in maternal Killer Cell Immunoglobulin-like Receptors (KIRs) and the ligand fetal Human Leukocyte Antigen-C (HLA-C) may predispose pregnant mothers for PE due to defective trophoblast invasion into the maternal decidua. Our study aimed to investigate th

Disentangling drivers of soil microbial potential enzyme activity across rain regimes : An approach based on the functional trait framework

The functional trait framework provides a powerful corpus of integrated concepts and theories to assess how environmental factors influence ecosystem functioning through community assembly. While common in plant ecology, this approach is under-used in microbial ecology. After an introduction of this framework in the context of microbial ecology and enzymology, we propose an approach 1) to elucidat

Endogenous regime change : Lessons from transition pathways in Dutch dairy farming

Sustainability transitions are commonly considered impossible without regime change. Theoretical work on regime change has mainly focused on niches and landscapes and less on change ‘from within’. Empirical analysis helps theorising endogenous regime change. Conceptualising regimes as semi-coherent entities composed of multiple ‘institutional logics’, we analyse the endogenous regime change in Dut

A method to estimate absence in apartments based on domestic water use

Today, every new building is constructed with the ambition of it having a very low energy demand or even being completely neutral with regard to supply and demand over a year. In modern low energy or nearly zero energy residential buildings like these, the behaviour of the occupants becomes increasingly more significant in terms of the energy performance of the building. Occupants who are present

Excess Morbidity Persists in Patients With Cushing's Disease During Long-term Remission : A Swedish Nationwide Study

CONTEXT: Whether multisystem morbidity in Cushing's disease (CD) remains elevated during long-term remission is still undetermined. OBJECTIVE: To investigate comorbidities in patients with CD. DESIGN, SETTING, AND PATIENTS: A retrospective, nationwide study of patients with CD identified in the Swedish National Patient Register between 1987 and 2013. Individual medical records were reviewed to ver

Propensity rules and interference effects in laser-Assisted photoionization of helium and neon

We investigate the angle-resolved photoelectron spectra from laser-Assisted photoionization for helium and neon atoms using an ab initio method based on time-dependent surface flux and configuration interaction singles. We find that the shape of the distributions can be interpreted using a propensity rule, an intrinsic difference in the absorption and the emission processes, as well as interferenc

Study of the possibilities with combinations of circularly and linearly polarized light for attosecond delay investigations

We present calculations on the atomic delay in photoionzation obtained with different combinations of linearly and circularly polarized light, and show how a tensor operator approach can be used to readily obtain results for any combination from a single calculation of the radial integrals. We find that for certain choices of polarization and detection geometry a single time-delay measurement is e

Pre-Term Delivery and Risk of Ischemic Heart Disease in Women

Background: Women who deliver pre-term have been reported to have increased future risks of cardiometabolic disorders. However, their long-term risks of ischemic heart disease (IHD) and whether such risks are due to shared familial factors are unclear. A better understanding of these risks may help improve long-term clinical follow-up and interventions to prevent IHD in women. Objectives: The purp

From Skin to Brain : A Parkinson's Disease Patient Transplanted with His Own Cells

In a pioneering study in New England Journal of Medicine, Schweitzer et al. (2020) report on a patient with Parkinson's disease who received a graft of dopamine neurons obtained from in vitro differentiated induced pluripotent stem cells, derived from the patient's own skin fibroblasts, showing the feasibility of autologous transplantation for dopamine cell replacement.

Association of TIM-1 (T-Cell Immunoglobulin and Mucin Domain 1) With Incidence of Stroke

OBJECTIVE: The aim of this study was to investigate if there is a causal relationship between circulating levels of TIM-1 (T-cell immunoglobulin and mucin domain 1) and incidence of stroke. Approach and Results: Plasma TIM-1 was analyzed in 4591 subjects (40% men; mean age, 57.5 years) attending the Malmö Diet and Cancer Study. Incidence of stroke was studied in relation to TIM-1 levels during a m

Gridded parasitic patch stacked microstrip array antenna for 60 GHz band

An array antenna design based on a gridded parasitic patch stacked microstrip antenna element is presented. The radiating part in the top layer of one antenna element has nine rectangular metal patches placed in a grid with three rows and three columns with a separation of 0.1 mm between the patches. Two means of realising the array are investigated. In a regular 2 × 2 concept, the parasitic patch

Precision Medicine in Diabetes : A Consensus Report From the American Diabetes Association (ADA) and the European Association for the Study of Diabetes (EASD)

The convergence of advances in medical science, human biology, data science, and technology has enabled the generation of new insights into the phenotype known as "diabetes." Increased knowledge of this condition has emerged from populations around the world, illuminating the differences in how diabetes presents, its variable prevalence, and how best practice in treatment varies between population