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Earlier sources: Nuclear
This energy thread follows nuclear through original research, public projects, and source reports. Read the evidence below to see which developments are represented in SYMTRI’s archive.
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 ↗59 classified signals in the fourteen-day window. 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.
- OpenAlex · Published · First archived
A Study on a Standardized Safety Regulation and Quality Assurance Framework for the Safe Acquisition and Operation of Nuclear-Powered Submarines ↗
Purpose: This study proposes a standardized safety regulation and quality assurance framework for the safe acquisition and operation of nuclear-powered submarines in Korea. The study focuses on how nuclear safety regulation should be synchronized with the defense acquisition life cycle, rather than treated as a late-stage licensing activity.Methods: The study reviews the current Korean nuclear licensing structure, the proposed legal framework for nuclear-powered submarines, domestic licensing delay cases, and international practices from the United States, the United Kingdom, France, and Austr…
- OpenAlex · Published · First archived
Electric Field Effects on Amine Regeneration in Post-Combustion Carbon Capture—Part II: Mode-Selective Infrared Laser Excitation Probed by Nonequilibrium Ehrenfest Electron-Nuclear Dynamics ↗
Amine regeneration is the most energy-intensive step in amine-based post-combustion carbon capture (PCCC), and reducing its energy demand is essential for improving the overall efficiency of the capture process. In Part I of this series, static electric fields were shown to stabilize CO2 absorption products and increase the energy requirements for amine regeneration. In Part II, we investigate whether the fundamentally different response to time-dependent infrared laser excitation could provide molecular mechanisms for reducing the energy demand of amine regeneration. Nonequilibrium Ehrenfest…
- OpenAlex · Published · First archived
Hierarchy-Aware AI Nuclear Phenotyping in Human iPSC-Derived Cardiomyocytes: A Preclinical Framework for Imaging Biomarker Development ↗
Background/Objectives: Nuclear morphology and chromatin organisation provide quantifiable imaging features that may serve as candidate biomarkers of cellular state. However, many cellular imaging studies analyse multiple cells from the same microscopy field without explicitly accounting for their hierarchical dependence, which may lead to optimistic estimates of model performance. This study developed a hierarchy-aware AI framework to investigate DAPI-derived nuclear phenotypes in human iPSC-derived cardiomyocytes (iPSC-CMs). Methods: A six-day fluorescence microscopy dataset was processed usi…
- arXiv · Published · First archived
Certified Compilation in the TELEPERM XS Nuclear Safety I&C Platform ↗
The large safety instrumentation & control (I&C) systems in civil nuclear power plants (NPPs) are mainly safe-shutdown systems (reactor protection) or limitation and control systems. Framatome's established TELEPERM XS (TXS Core) product family is a digital I&C system platform to cover all these applications. We illustrate the role of verification in the different stages of the software production toolchain, focus on the formal compilation process, and discuss the contribution of the CompCert certified compiler to the safety case of the product. Scrutinizing the object code produced by this co…
- OpenAlex · Published · First archived
Topology optimization of the NaK78 inlet distributor for a liquid-cooled space nuclear reactor heat exchanger ↗
Liquid-metal-cooled space nuclear reactors coupled with closed Brayton cycles are promising candidates for high-power deep-space missions. In these systems, the NaK78-to-He dual-fluid heat exchanger is critical. Yet, the concentrated liquid-metal inlet causes severe flow maldistribution, which can consume the limited pressure head (only 10–20% of that available from mechanical pumps) from electromagnetic pumps driving the NaK78 loop. Existing remedial measures rely on trial-and-error modifications to predefined geometric forms, offering no guarantee of optimality. In this work, we apply densit…
- OpenAlex · Published · First archived
Unified Technology Readiness Level (TRL) advancement criteria for space nuclear systems ↗
Abstract A unified set of TRL criteria for space nuclear systems, including nuclear electric propulsion (NEP), is presented, reconciling definitions and differences found in NASA, U.S. Department of Defense (U.S. Department of War (DoW) [as of 5 Sept 2025]) (DoD), and U.S. Department of Energy (DOE) guidance documents. The intent is to provide a common framework for consistent TRL assessment across government agencies and industry partners, thereby reducing ambiguity, limiting overstatement of readiness, and supporting programmatic decisions for advancing space nuclear technologies toward flig…
- OpenAlex · Published · First archived
Nuclear recoil Migdal effect in liquid xenon dark matter experiments ↗
The Migdal effect predicts that a nuclear recoil (NR) can be accompanied by detectable atomic ionization or excitation signals, even at the low energies expected from interactions of sub-GeV dark matter particles with atomic nuclei. Liquid xenon-based dark matter experiments have projected substantial sensitivity gains to light dark matter based on this effect, underscoring the importance of its direct characterization in xenon. In this Letter, we draw on our theoretical and experimental studies of NR Migdal interactions to discuss their predicted characteristics and corresponding observable s…
- OpenAlex · Published · First archived
Cyclic energy storage performance and particle evolution in a directly irradiated fluidized reactor for calcium looping thermochemical energy storage ↗
Calcium looping thermochemical energy storage (CaL-TCES) integrated with directly irradiated fluidized reactor (DIFR) is promising for large-scale and long-duration energy storage. However, the thermochemical behavior and cyclic particle evolution in DIFR remain unclear. In this study, energy storage performance of CaL-TCES composite particles in DIFR is investigated, with a fixed bed irradiation test used as a reference to clarify the necessity of fluidization. In the fixed bed, high-flux and nonuniform irradiation causes a serious mismatch between localized solar heating and bed-scale calcin…
- OpenAlex · Published · First archived
Dipolar Coupling Errors in Nuclear Spin Qubits ↗
ABSTRACT Nuclear spins have been studied since the beginning of quantum information science since they form the prototypical qubit with long coherence times and high‐fidelity operation. To perform practical fault‐tolerant quantum computations, however, not only do we require precision manufacturing techniques to produce millions of qubits, but these techniques need to consistently yield low‐error qubits. A deep understanding and control of the interactions between the qubits and their environment are needed as we scale so that devices can be engineered to avoid high error rates. In this work,…
- OpenAlex · Published · First archived
Unexpected functional role of the transactivation domain for nuclear import of STAT5 ↗
Abstract Signal transducer and activator of transcription 5 (STAT5) is a key transcriptional regulator acting downstream of hematopoietic cytokines and hormones, such as erythropoietin (Epo), thrombopoietin or prolactin. STAT5-mediated gene regulation involves tyrosine phosphorylation at cytokine receptors and subsequent nuclear import. We studied STAT5 nucleocytoplasmic shuttling via live-cell imaging of fluorescent mutants in STAT5 -/- HeLa EpoR cells. Unexpectedly, STAT5 mutants lacking the transactivation domain (TAD) were retained in the cytoplasm following Epo stimulation. Building upon…
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How to assess evidence about Nuclear
Check each original source for its methods, release status, limitations, and supporting data. A repository announcement, a preprint, and a published study provide different kinds of evidence. SYMTRI’s subject classification helps discovery; it does not independently validate the source’s claims.
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