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Earlier sources: Science
Science investigates the natural world through observation, experiments, and mathematical models. Explore papers and developments in biology, medicine, materials, neuroscience, physics, climate, and mathematics; a reported finding is not necessarily established consensus.
SYMTRI organizes observations from public sources into a living map. Connections reflect shared subject matter; they do not establish causation or endorse a source.
Open in the map ↗1675 classified signals in the fourteen-day window. Recent momentum: steady. These counts include signals awaiting readable evidence.
Earlier sources
Up to ten sources with readable evidence, ordered by their feed timestamp. These archive sources can be older than the live fourteen-day window. This list is a sample, not a measure of total activity. Dates distinguish paper publication, repository creation, model/dataset activity, Hacker News posts, and KEV catalog additions. “First archived” records when SYMTRI first stored the signal.
- Europe PMC · Published · First archived
Implementing Honey Bee Surveillance for the Detection of Avocado Sunblotch Disease in California. ↗
Avocado sunblotch viroid (ASBVd) represents a complex and significant hurdle for the avocado industry and growers. The viroid's uneven distribution within host tissues makes traditional leaf-based indexing logistically intensive and prone to sampling errors. This study evaluates a honey bee-mediated surveillance framework as a scalable alternative for orchard monitoring. Beehives were strategically positioned across four commercial orchards in Southern California, located directly under the canopy and at distances of 100 and 200 meters from confirmed infected trees. A total of 83 samples, comp
- Europe PMC · Published · First archived
OsFH14 Regulates Salt-Induced Plasmodesmata Permeability Enhancement to Promote Rice Salt Tolerance Through Actin Bundling. ↗
Plasmodesmata (PD)-mediated intercellular communication is critical for plant stress adaptation, yet its dynamic regulation by the actin cytoskeleton under abiotic stress remains poorly characterised. Here, we show that rice OsFH14 modulates salt-induced PD permeability to enhance salt tolerance. Through CRISPR-Cas9 mutagenesis and subcellular localisation analyses, we first demonstrate that OsFH14 specifically localises to PD and is strictly required for salt stress-induced increases in PD permeability. Osfh14 mutants exhibit reduced PD permeability and enhanced sensitivity to NaCl treatment.
- Europe PMC · Published · First archived
Evaluating the neurofilament light chain-derived gap between biological and chronological age in multiple sclerosis and controls. ↗
To compare chronological age and neurofilament light chain (NfL)-derived age in people with multiple sclerosis (pwMS) and controls, and to explore clinical correlates of the NfL age gap. We conducted a real-world, retrospective analysis including 792 pwMS (without evidence of clinical or MRI activity in the previous year and during follow-up) and 302 controls. NfL-derived age was computed using established age-adjusted reference. We used logistic regression models to compare pwMS and controls in chronological and NfL-derived age groups, and linear regression models to evaluate the associations
- Europe PMC · Published · First archived
MicroRNA172 regulates growth under low nitrogen conditions in Arabidopsis thaliana. ↗
miR172 and its target genes TOE1 and TOE2 regulate low nitrogen (LN) dependent root elongation growth in Arabidopsis thaliana. Overexpression of miR172 suppresses LN mediated PR elongation. Reduced responses of miR172 overexpression lines and toe1-2;toe2-1 mutants to LN are associated with impaired nitrate assimilation, suggesting a role of the miR172-TOE1/TOE2 module in regulating plant growth under LN conditions. MicroRNAs (miRNAs), a class of small non-coding regulatory RNAs, play important roles in various aspects of plant growth and stress responses, including nutrient deficiency. The ava
- Europe PMC · Published · First archived
PNPLA3 Is Associated With Hepatocellular Carcinoma, While a Five-Variant Polygenic Risk Score Shows Limited Discrimination in Korean Patients With MASLD. ↗
Genetic variants in PNPLA3, TM6SF2, MBOAT7, GCKR, and HSD17B13 have been associated with MASLD progression and hepatocellular carcinoma (HCC). We evaluated their associations with prevalent HCC and the performance of a five-variant polygenic risk score (PRS-5) in Korean patients with MASLD. A total of 1082 patients with MASLD from four university-affiliated hospitals were included, of whom 99 had HCC. Genotyping was performed for PNPLA3, TM6SF2, MBOAT7, GCKR, and HSD17B13. Associations with HCC were analyzed under additive, dominant, and recessive models. The PRS-5 was calculated using previou
- arXiv · Published · First archived
Physics-based logarithmic description of electrostatic field enhancement in hemisphere-on-cylindrical-post structures for high-field applications ↗
Electrostatic (ES) field enhancement at sharp conducting structures plays a central role in lightning protection, corona discharge, electrical breakdown in vacuum (for example in particle accelerators), and more generally in technological applications of field electron emitters. A canonical geometry for studying this ES effect is the hemisphere-on-cylindrical-post (HCP) model, in the regime where the structure stands on a planar conductor of large lateral extent, and a large gap exists between the structure and the counter-electrode. A parameter of major interest is the apex field enhancement…
- arXiv · Published · First archived
Right Answer, Wrong Reason: Accuracy, Consistency, and Consensus Are Misleading Indicators of LLM Faithfulness in Clinical Decision Support ↗
Clinical Large Language Models (LLMs) achieve strong medical-exam accuracy; however, a correct answer does not guarantee that the explanation names the concepts that actually drove the decision. We introduce three lightweight, directly interpretable metrics for this faithfulness gap: the Explanation Stability Index (ESI), which measures reasoning consistency across repeated queries; the Causal Faithfulness Score (CFS), which tests whether cited concepts drive predictions via concept ablation; and the Perturbation Stability Score (PSS), which measures robustness to semantic-preserving paraphras…
- arXiv · Published · First archived
Beyond Accuracy: Counterfactual Fragility and Demographic Bias in Clinical Evaluation of LLMs ↗
Clinical LLM evaluation often emphasizes answer accuracy; however, accuracy alone does not test counterfactual consistency or demographic robustness. We evaluated six LLMs on 150 MedQA USMLE questions using two automated perturbation tests to assess their performance. The counterfactual validity (CFV) test asked each model to make a minimal, plausible clinical change that would make a different answer correct. The demographic robustness test added six demographic prefixes to the same vignette and compared the answers and explanations with a no demographic baseline. Of the 900 CFV attempts, 228…
- Hacker News · Posted on Hacker News · First archived
Ask HN: How do you get your hands on physics environments for your robotics SIM? ↗
Are you building them procedurally yourself, or buying and rigging them, or using some other custom pipeline? Please shed light.
- Hacker News · Posted on Hacker News · First archived
Naïve physics ↗
Hacker News discussion.
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