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Earlier sources: Energy
Energy research and engineering concern how power is produced, stored, delivered, and consumed. Follow solar and nuclear power, fusion, geothermal systems, batteries, electricity grids, and changing power demand.
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 ↗698 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.
- OpenAlex · Published · First archived
Cyclic Nanoindentation of Clay Minerals: Micromechanical Insights Into Caprock Integrity for Subsurface Energy Storage ↗
Abstract Clay minerals are key constituents of subsurface caprocks and play a critical role in the long-term containment performance of underground energy storage systems. However, their cyclic mechanical response remains insufficiently understood, despite repeated pressure fluctuations being inherent to subsurface energy operations. This study investigates the cyclic nanoindentation response of four representative clay minerals, including ripidolite, illite, illite–smectite, and beidellite, using constant, progressive, and degressive loading protocols. Load–displacement behavior, indentation…
- OpenAlex · Published · First archived
Underwater image enhancement via boundary-aware gradient domain reconstruction and intuitionistic fuzzy set similarity measure-guided wavelet fusion for lowlight conditions ↗
Due to the light absorption and scattering effects of water in dark underwater environments, along with the sensitivity limitations of imaging devices, captured images generally suffer from color distortion, low contrast, blurred details, and uneven illumination. These issues severely constrain the performance of underwater vision systems. Existing underwater image enhancement (UIE) algorithms are mostly designed for well-lit scenes and perform poorly in lowlight underwater environments, struggling to achieve a balance between image clarity and scene fidelity. Therefore, this paper proposes an…
- OpenAlex · Published · First archived
A two-layer degradation-aware energy management framework for renewable power grids with battery and hydrogen storage ↗
High renewable energy penetration supports sustainable power generation; however, intermittency, component aging, and long-term performance uncertainty may pose operational challenges for power systems. This study proposes a degradation-aware, two-layer framework that jointly evaluates short-term system operation and long-term component performance. In the first layer, the Tunicate Swarm Algorithm (TSA) determines system capacities and energy-sharing parameters for a 24-h period. An objective function includes operating costs, emissions costs, BESS costs, hydrogen system costs, demand response…
- OpenAlex · Published · First archived
A physics-informed dynamic graph and evidence fusion method for fault alarm detection in building HVAC systems ↗
To address the superposition of normal thermal disturbances and fault characteristics in building heating, ventilation, and air conditioning (HVAC) systems, as well as conflicts among different diagnostic evidence sources, a physics-constrained dynamic graph and multi-source evidence fusion method for fault alarm detection is developed. The method employs the Dynamic Coupling-Informed Graph Attention Network to characterize the time-varying directional coupling relationships among air-side temperature variables, equipment control variables, and operational states. The graph structure is subjec…
- OpenAlex · Published · First archived
First-principles investigation of p-type Be3NX3 (X = F, Cl, Br) perovskites for optoelectronic and thermoelectric energy-harvesting applications ↗
Lead-free halide perovskites have attracted attention for optoelectronic and photovoltaic applications due to their tunable properties. However, Pb-free composition alone does not guarantee environmental safety, and constituent-element risks must be carefully considered. Here, first-principles calculations are performed for cubic Be 3 NX 3 (X = F, Cl, Br) halide anti-perovskites, focusing on their structural, mechanical, electronic, optical, thermoelectric, and dynamical properties. Geometry optimization, formation-energy analysis, tolerance factors, and simulated XRD patterns confirm the stab…
- OpenAlex · Published · First archived
ZC3H14 phosphorylation is required for nuclear speckle assembly during zygotic splicing activation in mice ↗
Following zygotic genome activation (ZGA) in embryos, nuclear speckles, which are subnuclear domains where pre-mRNA undergoes splicing, are reassembled in a process called zygotic splicing activation (ZSA). ZSA is vital for early development, but its regulation is poorly understood. This study identifies the RNA-binding protein ZC3H14 as a key promoter of nuclear speckle formation during ZSA. Although viable, Zc3h14 knockout mice exhibit reduced female fertility. Most embryos from these females arrest during the 1-cell to 2-cell transition, and the remaining embryos arrest at the 2-cell stage,…
- OpenAlex · Published · First archived
Ag Precursor-Assisted 350 °C Growth of Cu(In,Ga)Se2 Solar Cells Based on a Three-Stage Process ↗
Abstract Lowering the growth temperature of Cu(In,Ga)Se2 (CIGS) is required for bifacial structures based on CIGS deposition on transparent conductive oxides and for CIGS tandem solar cells, but low-temperature growth generally deteriorates CIGS absorber quality and solar-cell performance. To address this issue, we introduce Ag as a precursor layer for low-temperature CIGS growth. We first vary the Ag precursor thickness to identify the optimum Ag incorporation level. Although Ag improves CIGS absorber quality, it also reduces the net acceptor density; excessive Ag incorporation therefore lead…
- OpenAlex · Published · First archived
Scenario-Based Dynamic Assessment of Rooftop Solar Photovoltaic and Heat Pump Systems for Low-Emission French Single-Family Houses ↗
Achieving the European Union’s (EU) climate neutrality targets requires residential buildings to reduce operational carbon emissions, while increasing on-site renewable generation. However, the relative contributions of rooftop photovoltaic (PV) systems with battery storage and heat pump (HP) retrofits have not been comprehensively evaluated for representative French single-family house typologies. This study assesses two representative French detached-house typologies, Mozart (single-storey) and Puccini (two-storey), across four climatic zones (Paris, Lyon, Brest, and Nice) using a scenario-b…
- OpenAlex · Published · First archived
An enhanced sparse representation framework incorporating CoSaMP-BLOTLESS for improved multi-focus image fusion ↗
Abstract The efficiency of the dictionary learning and sparse recovery mechanisms plays a crucial role in sparse-representation-based image fusion. The recently proposed Block Total Least Squares (BLOTLESS) update algorithm is able to better perform dictionary learning, but it has higher computational complexity and longer dictionary learning time, which hinders its application in practice. To address this disadvantage, in this paper, we suggest a modified over the dictionary learning framework, which is modified the sparse coding stage in the BLOTLESS optimization process to overcome this dis…
- OpenAlex · Published · First archived
Thirsty clean energy: localized water stress and hydro-ecological tradeoffs in green hydrogen expansion ↗
Green hydrogen is central to global decarbonization, yet its rapid expansion exposes a severe spatial contradiction: the regions possessing optimal renewable energy potential are overwhelmingly the planet’s most water-stressed and ecologically fragile landscapes. This review critically examines the localized hydro-ecological tradeoffs of mega-scale electrolysis across arid export corridors in Australia, Chile, and North Africa. Moving beyond theoretical stoichiometry, the analysis deconstructs the true operational water footprint of commercial electrolysis and evaluates cascading secondary ris…
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How to assess evidence about Energy
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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