• Magnetic interactions and spin-wave stiffness constant of In-substituted yttrium iron garnetsMagnetic interactions and spin-wave stiffness constant of In-substituted yttrium iron garnets

    a b s t r a c t Indium-substituted yttrium iron garnet samples, Y3Fe5xInxO12 (x ¼ 0e0.7, step 0.1), were prepared using a citrate solgel method. Synchrotron X-ray diffraction (SXRD) measurements combined with the Rietveld refinement technique were used to investigate the crystallization, structure parameters and lattice distortion in the sampl...

    pdf8 trang | Chia sẻ: thanhle95 | Ngày: 16/07/2021 | Lượt xem: 321 | Lượt tải: 0

  • Preparation and characterization of a chitosan/MgO composite for the effective removal of reactive blue 19 dye from aqueous solutionPreparation and characterization of a chitosan/MgO composite for the effective removal of reactive blue 19 dye from aqueous solution

    We developed a multi-functional adsorbent with excellent adsorption capacity and low contact time for reactive blue (RB) 19 dye removal. A multi-functional film based on chitosan (CS) combined with nanosized MgO was prepared by solvent casting with mild drying. The CS/MgO composite product was characterized by Fourier transform infrared spectros...

    pdf8 trang | Chia sẻ: thanhle95 | Ngày: 16/07/2021 | Lượt xem: 398 | Lượt tải: 0

  • Simulation of coupling optical modes in 1D photonic crystals for optoelectronic applicationsSimulation of coupling optical modes in 1D photonic crystals for optoelectronic applications

    In this paper, one-dimensional photonic crystal distributed feedback structures were chosen for simulating the photonic modes. The corresponding photonic bands were calculated by using a numerical method for solving the master equation, while the reflectivity spectra of the structures were simulated by using a rigorous coupled wave analysis metho...

    pdf9 trang | Chia sẻ: thanhle95 | Ngày: 16/07/2021 | Lượt xem: 307 | Lượt tải: 0

  • Porous scaffolds for bone regenerationPorous scaffolds for bone regeneration

    Globally, bone fractures due to osteoporosis occur every 20 s in people aged over 50 years. The significant healthcare costs required to manage this problem are further exacerbated by the long healing times experienced with current treatment practices. Novel treatment approaches such as tissue engineering, is using biomaterial scaffolds to stimu...

    pdf9 trang | Chia sẻ: thanhle95 | Ngày: 16/07/2021 | Lượt xem: 327 | Lượt tải: 0

  • Realization of a portable H2S sensing instrument based on SnO2 nanowiresRealization of a portable H2S sensing instrument based on SnO2 nanowires

    Monitoring of toxic gas in air is important because air pollution, especially in developing countries, has rapidly become severe. The high cost of installation and maintenance of a stationary analysis system by using methods such as gas chromatography limits its applications. Low-power, portable devices with relatively low-cost gas sensors are e...

    pdf8 trang | Chia sẻ: thanhle95 | Ngày: 16/07/2021 | Lượt xem: 354 | Lượt tải: 0

  • Calcium phosphate stability on melt electrowritten PCL scaffoldsCalcium phosphate stability on melt electrowritten PCL scaffolds

    Calcium phosphate (CaP) coating on melt electrowritten (MEW) substrates is a potential candidate for bone regeneration influencing the interaction of osteoblasts with implanted scaffolds. Pretreatment to improve hydrophilicity of the hydrophobic polymer fibres affects subsequent coating with bioactive compounds like CaP. Therefore, this study ev...

    pdf10 trang | Chia sẻ: thanhle95 | Ngày: 16/07/2021 | Lượt xem: 381 | Lượt tải: 0

  • Role of Co dopants on the structural, optical and magnetic properties of lead-free ferroelectric Na0.5Bi0.5TiO3 materialsRole of Co dopants on the structural, optical and magnetic properties of lead-free ferroelectric Na0.5Bi0.5TiO3 materials

    Co-doped Na0.5Bi0.5TiO3 materials were fabricated by a sol-gel technique. The structural distortion of Codoped Na0.5Bi0.5TiO3 materials was due to the difference between the radii of Co dopants and Ti hosts. The optical band gap decreased from 3.11 to 1.83 eV because of the local state of the Co cation in the band structure. Room temperature ferr...

    pdf7 trang | Chia sẻ: thanhle95 | Ngày: 16/07/2021 | Lượt xem: 307 | Lượt tải: 0

  • Cost-effective porous carbon materials synthesized by carbonizing rice husk and K2CO3 activation and their application for lithium-sulfur batteriesCost-effective porous carbon materials synthesized by carbonizing rice husk and K2CO3 activation and their application for lithium-sulfur batteries

    In this work, we developed highly porous activated carbon (AC) materials with micro/meso porosity through carbonizing rice husk and treating them with K2CO3. Elemental sulfur was then loaded to the micropores through a solution infiltration method to form rice husk-derived activated carbon (RHAC)@S composite materials. The as-prepared RHAC@S com...

    pdf7 trang | Chia sẻ: thanhle95 | Ngày: 16/07/2021 | Lượt xem: 508 | Lượt tải: 0

  • Novel approaches in cancer management with circulating tumor cell clustersNovel approaches in cancer management with circulating tumor cell clusters

    Tumor metastasis is responsible for the vast majority of cancer-associated morbidities and mortalities. Recent studies have disclosed the higher metastatic potential of circulating tumor cell (CTC) clusters than single CTCs. Despite long-term study on metastasis, the characterizations of its most potent cellular drivers, i.e., CTC clusters have ...

    pdf18 trang | Chia sẻ: thanhle95 | Ngày: 16/07/2021 | Lượt xem: 355 | Lượt tải: 0

  • Evaluation of catalytic activity of MeOx/sepiolite in benzyl alcohol oxidationEvaluation of catalytic activity of MeOx/sepiolite in benzyl alcohol oxidation

    A series of MeOx/sepiolite (Me ¼ Cu, Cr, Mn, Co, Ni) catalysts was prepared through the deposition eprecipitation and characterized by means of XRD, EDS, SEM, BET, and H2-TPR. The structural characterization showed a fine distribution of MeOx metal oxides on magnesium silicate nanobars. The sepiolite-loaded-metal oxide catalysts have been screene...

    pdf7 trang | Chia sẻ: thanhle95 | Ngày: 16/07/2021 | Lượt xem: 303 | Lượt tải: 0