Category: 4. Physics

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  • Effect of vacancies on blue-colored calcium phosphate scaffolds derived from Nile tilapia bone powder

    Effect of vacancies on blue-colored calcium phosphate scaffolds derived from Nile tilapia bone powder

    Physical appearance and morphology of scaffolds

    After sintering, the physical appearance of all scaffolds is shown in Fig. 2. The FB-13 and FB-14 scaffolds appeared blue, while the SA-13 scaffold exhibited a pale blue color. Interestingly, the…

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  • Rapid vortex ring bubble transport via bubble-pulsation of constrained underwater spark discharge

    Rapid vortex ring bubble transport via bubble-pulsation of constrained underwater spark discharge

    Observation of the ring bubble

    A microsecond electric pulse vaporizes the liquid surrounding the electrode tip by energizing a coaxial in-pipe electrode positioned 5–10 mm from the pipe’s opening. The compression of the incondensable gases…

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  • Metal loss defect detection and depth estimation using multi-spectral image analysis of cooling excited steel specimen with corrosion

    Metal loss defect detection and depth estimation using multi-spectral image analysis of cooling excited steel specimen with corrosion

  • Mahmoodian, M. & Alani, A. M. Effect of temperature and acidity of sulfuric acid on concrete properties. J. Mater. Civ. Eng. 29, 04017154 (2017).

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  • Machine learning accelerated descriptor design for catalyst discovery in CO2 to methanol conversion

    Machine learning accelerated descriptor design for catalyst discovery in CO2 to methanol conversion

    In order to discover potential new catalysts for converting CO2 into methanol, we present the workflow depicted in Fig. 1. The key steps are summarized here, with detailed implementation procedures and configurations available in the Methods…

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  • How breaking the ‘reciprocity law’ could improve green energy

    How breaking the ‘reciprocity law’ could improve green energy

    • RESEARCH HIGHLIGHT

    A material that emits less energy than it absorbs has…

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  • Experimental investigation of the developed focusing elements for generating extreme pressures in a diaphragmless shock tube

    Experimental investigation of the developed focusing elements for generating extreme pressures in a diaphragmless shock tube

    Physical model

    The shape of the shock wave front moving through the slowly varying area of the shock tube changes due to disturbances generated by the wall. Since the effects of these disturbances in the shock wave formation regions dominate over…

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  • Reversible switching of the environment-protected quantum spin Hall insulator bismuthene at the graphene/SiC interface

    Reversible switching of the environment-protected quantum spin Hall insulator bismuthene at the graphene/SiC interface

    Electronic and geometric properties of the precursor phase

    We start with a discussion of the properties of the precursor phase, which is prepared by Bi intercalation of a graphene buffer layer and several subsequent annealing steps (see Methods…

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  • Short-wave magnons with multipole spin precession detected in the topological bands of a skyrmion lattice

    Short-wave magnons with multipole spin precession detected in the topological bands of a skyrmion lattice

    Sample description

    The Cu2OSeO3 bulk was grown by chemical vapor transport method and shaped to the dimension of about 4 mm × 3 mm × 0.5 mm. Three axes of the samples \([001]\times [110]\times [1\bar{1}0]\) were characterized by…

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