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Heteroresistance can allow otherwise drug-susceptible bacteria to survive and resume growth after antibiotic exposure. This temporary form of antibiotic tolerance can be caused by the upregulation of stress response genes or a decrease in cell growth rate. However, it is not clear how expression of multiple genes contributes to the tolerance phenotype.
View Article and Find Full Text PDFDynamic anti-correlations of water hydrogen bonds.
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Water is characterized by strong intermolecular hydrogen bonds (H-bonds) between molecules. The two hydrogen atoms in one water molecule can form H-bonds of dissimilar length. Although intimately connected to water's anomalous properties, the details and the origins of the asymmetry have remained elusive.
View Article and Find Full Text PDFResting-State Functional Connectivity Predicts Attention Problems in Children: Evidence from the ABCD Study.
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Attention deficit/hyperactivity disorder (ADHD) is a common neurodevelopmental disorder, and numerous functional and structural differences have been identified in the brains of individuals with ADHD compared to controls. This study uses data from the baseline sample of the large, epidemiologically informed Adolescent Brain Cognitive Development Study of children aged 9-10 years old ( = 7979). Cross-validated Poisson elastic net regression models were used to predict a dimensional measure of ADHD symptomatology from within- and between-network resting-state correlations and several known risk factors, such as biological sex, socioeconomic status, and parental history of problematic alcohol and drug use.
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Article Synopsis
- Unlike other animal groups, swarms of non-biting midges lack a global order and show weak velocity correlation, making it hard to understand their collective behavior.
- The study reveals that midges in laboratory swarms display a unique form of long-range organization that hasn't been identified before, characterized by their positions being maximally anticorrelated.
- This behavior is influenced by midges being drawn towards the swarm's center while also repelling each other, suggesting that their swarms exist on the edge of a transition between stability and instability.
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