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Articles 4261 - 4290 of 291657

Full-Text Articles in Physical Sciences and Mathematics

Mgrre_Thinsections_Mgrre-142_45, Mgrre Apr 2026

Mgrre_Thinsections_Mgrre-142_45, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-142_57, Mgrre Apr 2026

Mgrre_Thinsections_Mgrre-142_57, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-142_64, Mgrre Apr 2026

Mgrre_Thinsections_Mgrre-142_64, Mgrre

Thin Sections

No abstract provided.


Ai’S Role In Searching For Evidence: Friend And Foe, Barbara (Basia) Delawska-Elliott, Brandon Wilkinson Apr 2026

Ai’S Role In Searching For Evidence: Friend And Foe, Barbara (Basia) Delawska-Elliott, Brandon Wilkinson

Publications 2026-present

No abstract provided.


Mgrre_Thinsections_Mgrre-144_1, Mgrre Apr 2026

Mgrre_Thinsections_Mgrre-144_1, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-144_22, Mgrre Apr 2026

Mgrre_Thinsections_Mgrre-144_22, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-145_23, Mgrre Apr 2026

Mgrre_Thinsections_Mgrre-145_23, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-146_10, Mgrre Apr 2026

Mgrre_Thinsections_Mgrre-146_10, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-146_18, Mgrre Apr 2026

Mgrre_Thinsections_Mgrre-146_18, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-141_21, Mgrre Apr 2026

Mgrre_Thinsections_Mgrre-141_21, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-141_39, Mgrre Apr 2026

Mgrre_Thinsections_Mgrre-141_39, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-141_42, Mgrre Apr 2026

Mgrre_Thinsections_Mgrre-141_42, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-141_52, Mgrre Apr 2026

Mgrre_Thinsections_Mgrre-141_52, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-141_71, Mgrre Apr 2026

Mgrre_Thinsections_Mgrre-141_71, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-141_80, Mgrre Apr 2026

Mgrre_Thinsections_Mgrre-141_80, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-141_81, Mgrre Apr 2026

Mgrre_Thinsections_Mgrre-141_81, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-141_87, Mgrre Apr 2026

Mgrre_Thinsections_Mgrre-141_87, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-142_56, Mgrre Apr 2026

Mgrre_Thinsections_Mgrre-142_56, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-141_70, Mgrre Apr 2026

Mgrre_Thinsections_Mgrre-141_70, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-142_55, Mgrre Apr 2026

Mgrre_Thinsections_Mgrre-142_55, Mgrre

Thin Sections

No abstract provided.


Mgrre_Thinsections_Mgrre-143_14, Mgrre Apr 2026

Mgrre_Thinsections_Mgrre-143_14, Mgrre

Thin Sections

No abstract provided.


Advancing Cyclic Ion Mobility Mass Spectrometry For Structural Characterization, Isomer Discrimination And Gas-Phase Ion Chemistry, Sudam Shivaji Mane Apr 2026

Advancing Cyclic Ion Mobility Mass Spectrometry For Structural Characterization, Isomer Discrimination And Gas-Phase Ion Chemistry, Sudam Shivaji Mane

Theses and Dissertations

This dissertation focuses on the development and application of high-resolution ion mobility-mass spectrometry (IMS-MS) methodologies for gas-phase separation and structural characterization of small molecules, with particular emphasis on epimers, positional isomers, and protomers. In addition to structural separations, this work investigates fundamental aspects of gas-phase ion chemistry using IMS-MS in combination with collision-induced ion activation and dissociation techniques. Advanced separations were performed using cyclic traveling-wave ion mobility spectrometry (cyclic TWIMS), implemented in a commercial cyclic ion mobility-mass spectrometry (cIMS) platform, to systematically evaluate both the capabilities and limitations of high-resolution IMS in resolving subtle structural differences. Initial studies demonstrated that, …


Using Geoscience To Empower A Community And Provide Access To Potable Groundwater, Hendratta Ali Dr Apr 2026

Using Geoscience To Empower A Community And Provide Access To Potable Groundwater, Hendratta Ali Dr

SACAD: Scholarly Activities

Access to potable water remains challenging around the world and remains one of the UN Sustainable Development Goals for 2030. Barriers to clean water access are exacerbated by the lack of technical expertise, limited funding for education and training, and the absence of reliable infrastructure that provides access to clean water. The Geoscientists Without Borders program, supported FHSU with funding to test, explore and provide access to clean potable groundwater to a rural community in Cameroon. We conducted water quality analyses, identified, mapped and located deep aquifers in fractured metamorphic rocks. Water quality analyses showed acidic pH and elevated amounts …


Mandibular Ecomorphology Of Tylosaurus (Reptilia: Mosasauridae), Andrew I. Price, Amanda Peng Apr 2026

Mandibular Ecomorphology Of Tylosaurus (Reptilia: Mosasauridae), Andrew I. Price, Amanda Peng

SACAD: Scholarly Activities

The large mosasaur Tylosaurus is known to have been a predator of large marine animals. Performing beam theory analysis, a computational technique that uses linear dimensions of a structure to calculate its resistance to bending, on the mandibles of six Tylosaurus specimens from the Smoky Hill Chalk of Kansas indicates dorsoventral and mediolateral bending strength both increase posteriorly along the mandible. Comparisons with Varanus komodoensis indicate relatively greater mediolateral bending strength mid-dentary in Tylosaurus, suggesting that resisting torsional forces of struggling prey was more important at this landmark in Tylosaurus and that more of its jaw length was used …


Deconstructing The Black Box: An Explainability Analysis Of Deep Learning Architectures In Cytopathology, Chase A. Garrett Apr 2026

Deconstructing The Black Box: An Explainability Analysis Of Deep Learning Architectures In Cytopathology, Chase A. Garrett

SACAD: Scholarly Activities

Deep learning shows strong potential in medical-image analysis, yet adoption in cyptopathology

remains limited. Cytopathology could benefit from deep learning applications by improving

diagnostic efficiency and accuracy. However deep learning comes with a notorious “black box”

that keeps the models from being transparent and trustworthy for widespread clinical adoption.

We conducted a comprehensive and comparative analysis of several deep learning architectures

for multi-class classification of acute leukemia types, ALL, AML, and normal healthy cells from

peripheral blood smear images. The models in this research include a Vision Transformer (ViT)

and a diverse selection of Convolutional Neural Network (CNN) models. The …


Pre-Experiential Constraint Reconstruction: A Structural Account Of The Prior Layer In Dialogue With Jung, Griselda Poe Apr 2026

Pre-Experiential Constraint Reconstruction: A Structural Account Of The Prior Layer In Dialogue With Jung, Griselda Poe

Publications and Research

Experiences commonly described as pre-experiential memory—such as immediate recognition, familiarity without prior exposure, and the sense of "already knowing"—are typically interpreted as the retrieval of stored content. However, this storage-based account does not provide a structurally consistent explanation of how such content is preserved prior to experience or reactivated in a form that aligns with present input.

This paper extends the three-layer cognitive architecture developed in prior work in this series (Poe, 2026n), in which cognition operates across Core processing, Modulation, and an operationally inaccessible Prior layer that supplies constraints to all processing.

This paper proposes an alternative account in …


Analysis And Study Of Telemetry Systems For Directional And Horizontal Well Drilling, Jahongir Abdiganiyev Erkin Ugli, Sherali Halloqovich Umedov Apr 2026

Analysis And Study Of Telemetry Systems For Directional And Horizontal Well Drilling, Jahongir Abdiganiyev Erkin Ugli, Sherali Halloqovich Umedov

Technical science and innovation

The article discusses the issues of reducing non-productive drilling time during the construction of directional and horizontal wells. The main focus is on the analysis of drilling conditions in complex geological and high-temperature environments. Particular attention is paid to drilling conditions in the territory of the Republic of Uzbekistan, with a specific study of data from the Boysun and Ustyurt regions. An analysis and study of the performance of telemetry systems available on the market, as well as their main technical characteristics, have been conducted. Key factors affecting the accuracy of wellbore trajectory measurements under various geological and technical conditions …


Dual History Enhancement With Hybrid Hypergraph-Graph Networks For Temporal Knowledge Graph Reasoning, Kailun Ye, Xiangjie Kong, Yuchao Zhang, Xuan Wang, Linan Zhu, Jiaxin Du, Guojiang Shen, Jianxin Li Apr 2026

Dual History Enhancement With Hybrid Hypergraph-Graph Networks For Temporal Knowledge Graph Reasoning, Kailun Ye, Xiangjie Kong, Yuchao Zhang, Xuan Wang, Linan Zhu, Jiaxin Du, Guojiang Shen, Jianxin Li

Research outputs 2022 to 2026

Temporal Knowledge Graph (TKG) reasoning seeks to predict future events by analyzing historical data, where the effective leverage of both local and global historical facts proves crucial. Existing approaches employ graph neural networks (GNNs) and recurrent neural networks (RNNs) for local evolution patterns, complemented by statistical methods to enhance attention to global facts, demonstrating efficient predictive capabilities. However, traditional GNNs, constrained by their low-order neighborhood aggregation design, inherently fail to model potential high-order dependencies among facts. Furthermore, existing global history modeling approaches may introduce irrelevant historical information that interferes with prediction tasks. To address these limitations, we propose a Dual …


Mapping Of Petroleum-Prospective Structures In The Jurassic Complex Of The Western Aral Uplift Based On Seismic Attributes, Yuliya Leonidovna Salaydinova, Marina Georgievna Yuldasheva Apr 2026

Mapping Of Petroleum-Prospective Structures In The Jurassic Complex Of The Western Aral Uplift Based On Seismic Attributes, Yuliya Leonidovna Salaydinova, Marina Georgievna Yuldasheva

Technical science and innovation

To solve the problems of identifying and mapping prospective structures, comprehensive analysis of 3D seismic attributes is widely used at the present stage of geological research; it was applied to assess the petroleum potential of the Jurassic rock complex in the Aral Sea offshore area of the Ustyurt region. The study integrates structural mapping on the tops of Permo-Triassic and Jurassic horizons, attribute volumes (Variance/Coherence, Sweetness, root-mean-square (RMS) amplitude, Envelope) and generalized spectral decomposition (GSD, 19-41 Hz), combined with well-log and well-test data from the Western Aral, Meros, Dengiz and Karakum areas. Variance attributes were used to delineate fault zones …


Elemental And Mineralogical Characterization Of Permo-Carboniferous Coal In The Ngaka Coalfield, Southwest Tanzania: Implications For Coal Quality Variation, John W. Gama, Justina J. Saroni, Remigius L. Gama Apr 2026

Elemental And Mineralogical Characterization Of Permo-Carboniferous Coal In The Ngaka Coalfield, Southwest Tanzania: Implications For Coal Quality Variation, John W. Gama, Justina J. Saroni, Remigius L. Gama

Tanzania Journal of Science

Coal from heterolithic seams exhibits distinct chemical characteristics due to interbedded non-coal beds, which influence its quality and usability. Despite extensive research in these settings, the elemental and mineralogical characteristics of the heterolithic sequences of the Mchuchuma Formation (K2) in the Ngaka Coalfield remain poorly documented. This study provides the first detailed assessment of K2 seams across five active mine sites. Eleven representative samples were analyzed using proximate, elemental, and mineralogical techniques, supported by Pearson correlation, binary analysis, and Principal Component Analysis. Proximate analysis revealed that ash content varies across mine sites, with values ranging from 9.17 to 25.03%, volatile …