Showing 4,861 - 4,880 results of 5,787 for search '"magnet"', query time: 0.09s Refine Results
  1. 4861

    A New Schiff Base Organically Modified Silica Aerogel-Like Material for Metal Ion Adsorption with Ni Selectivity by João P. Vareda, Paulo D. Matos, Artur J. M. Valente, Luisa Durães

    Published 2022-01-01
    “…The inclusion of the Schiff base in the silica network was accomplished by reacting an amine-containing silica precursor with an aldehyde and confirmed by nuclear magnetic resonance (NMR) analysis. The adsorbent shrunk only 10% after evaporative drying, which resulted in a highly porous material (85% porosity, 4 cm3 g−1 specific pore volume). …”
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  2. 4862

    Global Ionospheric TEC Forecasting for Geomagnetic Storm Time Using a Deep Learning‐Based Multi‐Model Ensemble Method by Xiaodong Ren, Pengxin Yang, Dengkui Mei, Hang Liu, Guozhen Xu, Yue Dong

    Published 2023-03-01
    “…Seven features in 170 geomagnetic storm events, including the three components Bx, By and Bz of interplanetary magnetic field (IMF), the Kp and Dst indices of geomagnetic activity data, the F10.7 index of solar activity data and global TEC data, were used for modeling. …”
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  3. 4863

    Functionalized Magnetite Nanoparticles Using Two New Ionic Liquids for Efficient Oil Spill Cleanup by Noorah A. Faqihi, Mahmood M. S. Abdullah, Mohd Sajid Ali, Hamad A. Al‐Lohedan, Zainab M. Almarhoon

    Published 2023-01-01
    “…., high oil removal efficiency, high surface area, and response to an external magnetic field. The efficiency of MNPs for oil spill uptake can be enhanced by functionalizing their surface using different materials. …”
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  4. 4864

    Altered Thyroid Function Tests Observed in Hypophosphatasia Patients Treated with Asfotase Alfa by Hajime Kato, Naoko Hidaka, Minae Koga, Yuka Kinoshita, Masaomi Nangaku, Noriko Makita, Nobuaki Ito

    Published 2021-01-01
    “…However, asfotase alfa may be absorbed on the magnetic beads used in the AIA reagent with the AIA-2000 system but not absorbed on the microparticles used in AIA-CL2400. …”
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  5. 4865

    Transforming Alzheimer’s Disease Diagnosis: Implementing Vision Transformer (ViT) for MRI Images Classification by Dian Kurniasari, Muhammad Dwi Pratama, Akmal Junaidi, Ahmad Faisol

    Published 2025-01-01
    “…Modern imaging techniques, such as Magnetic Resonance Imaging (MRI), have become essential in diagnosing Alzheimer’s by providing detailed insights into structural brain changes. …”
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  6. 4866

    Neuroophthalmic Manifestations of Intracranial Tumours in Children by Megha Kotecha, Sarang Gotecha, Ashish Chugh, Prashant Punia

    Published 2021-01-01
    “…All children between 0 and 16 years presenting with brain tumours confirmed by Magnetic Resonance Imaging (MRI) and treated surgically in our institute were included in this study. …”
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  7. 4867

    Challenges in Diagnosis and Management of Altered Mental Status in the Setting of Urosepsis and Hydrocephalus Secondary to an Occlusive Cyst of the Fourth Ventricle: A Case Report by Matthew Van Ligten, Miles Hudson, Jonathon J. Parker, Wayne A. Martini

    Published 2025-01-01
    “…Brain imaging, including magnetic resonance imaging (MRI) and computed tomography (CT), facilitated the diagnosis, suggesting hydrocephalus with downward tonsillar herniation. …”
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  8. 4868

    Clinical and Radiological Outcomes of Extracorporeal Shock Wave Therapy in Early-Stage Femoral Head Osteonecrosis by Abdulrahman D. Algarni, Hassan M. Al Moallem

    Published 2018-01-01
    “…Clinical (visual analogue scale [VAS] and Harris hip score [HHS]) and radiological (plain radiographs and magnetic resonance imaging [MRI]) evaluations were performed before and after intervention. …”
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  9. 4869

    Heat transport efficiency in rheology of radiated casson material due to porous shrinking cylinder by Muhammad Yasir, N. Ameer Ahammad, Aisha M. Alqahtani, Yahia Said

    Published 2025-02-01
    “…The results also demonstrated that in the second branch solution, with increasing magnetic and Casson factors, the fluid flow velocity distribution decreases, while in the first branch solution, it increases. …”
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  10. 4870

    Climatological Statistics of Extreme Geomagnetic Fluctuations With Periods From 1 s to 60 min by N. C. Rogers, J. A. Wild, E. F. Eastoe, J. Hübert

    Published 2021-11-01
    “…Abstract Using a global database of 125 magnetometers covering several decades, we present occurrence statistics for fluctuations of the horizontal geomagnetic field (dBh/dt) exceeding the 99.97th percentile (P99.97) for both ramp changes (Rn) and the root‐mean‐square (Sn) of fluctuations over periods, τ, from 1 to 60 min and describe their variation with geomagnetic latitude and magnetic local time (MLT). Rates of exceedance are explained by reference to the magneto‐ionospheric processes dominant in different latitude and MLT sectors, including ULF waves, interplanetary shocks, auroral substorm currents, and traveling convection vortices. …”
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  11. 4871

    Study on Microstructure Differences of Coal Samples before and after Loading by Jiajia Liu, Yingxiang Fang, Gaini Jia, Shouqi Chen, Jianmin Hu

    Published 2020-01-01
    “…In order to study this difference, the authors carried out mercury intrusion experiments on coal containing different coal samples and used nondestructive nuclear magnetic resonance (NMR) techniques, scanning electron microscopy, and transmission electron microscopy, to study the microstructure of coal samples before and after loading. …”
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  12. 4872

    Experimental Study on the Mechanical Properties of Sandstone under the Action of Chemical Erosion and Freeze-Thaw Cycles by Lizhuang Cui, Nan Qin, Shuai Wang, Xuezhi Feng

    Published 2021-01-01
    “…For the cohesion degradation, 35.4%, 29.3%, and 27.2% degradation are observed under acidic, alkaline, and neutral solutions. Nuclear magnetic resonance imaging shows that the chemical erosion and freeze-thaw cycles both promote the degradation of rock properties from surface to interior; after 45 freeze-thaw cycles, the mechanical properties drop sharply. …”
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  13. 4873

    Thermal performance and MHD peristaltic flow of hybrid nanofluid (Au-Ta/Blood) in an asymmetric conduit with electro-osmosis and shape factor effects by K. Thirunavukarasan, G. Sucharitha

    Published 2025-02-01
    “…An augmentation of the magnetic parameter declines the velocity profile. Furthermore, the incorporation of a 3 % volume fraction of nanoparticles results in a 2.947 % improvement in heat transmission efficiency at the right wall of the peristaltic channel. …”
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  14. 4874

    Changes in Paraspinal Muscles and Facet Joints after Minimally Invasive Posterior Lumbar Interbody Fusion Using the Cortical Bone Trajectory Technique: A Prospective Study by Yue Li, Yuxiang Chen, Yuzeng Liu, Yong Hai, Xinuo Zhang, Li Guan, Tianqing Zhang

    Published 2022-01-01
    “…We evaluated preoperative and 1-month, 3-month, 6-month, and 1-year postoperative clinical data including Visual Analogue Scale (VAS) scores and Oswestry Disability Index (ODI). Magnetic resonance imaging (MRI) was performed a year after surgery. …”
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  15. 4875

    Flexural Toughness of Basalt Fibre-Reinforced Shotcrete and Industrial-Scale Testing by Huazhe Jiao, Yachuang Wu, Xinming Chen, Yixuan Yang

    Published 2019-01-01
    “…The flexural performance was analysed based on the toughness standards, namely, DBV-1998, JSCE SF-4, and nuclear magnetic resonance (NMR) pore testing. The results demonstrate that, given a basalt fibre (BF) dosage of 0–7.5 kg/m3, 18 mm BF can significantly increase the residual stress under the same deformation, rather than the peak values of the flexural strength. …”
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  16. 4876

    Insight into unusual complex thermodynamical behaviour of citric acid and ethanolamine solution by Reshma Karunakaran, Rajagopal Shanmugasundaram

    Published 2025-01-01
    “…Results of rheometry, Raman, proton nuclear magnetic resonance (1HNMR), photoluminescence (PL) spectroscopy, and thermogravimetric analysis (TGA) of this fluid confirmed this phenomena, collectively. …”
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  17. 4877

    Evaluation of contralateral arterial flow compensation using transcranial Doppler in acute internal carotid artery occlusion and implications for neurological outcome by Yichen Wang, Hong Chang, Peng Bai, Jin Chen

    Published 2025-01-01
    “…TCD showed excellent agreement with magnetic resonance angiography (MRA)/CT angiography (CTA) in assessing anterior communicating artery (ACoA) status (kappa = 0.873, p < 0.001). …”
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  18. 4878

    Breast Suspicious Microcalcifications on Contrast-Enhanced Mammograms: Practice and Reflection by Zhao X

    Published 2025-01-01
    “…A small proportion of these cases underwent dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI). The enhancement patterns of CEM in this study were classified into three categories: enhancement, no enhancement, and indeterminate. …”
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  19. 4879

    Synthesis, Spectroscopic Characterization, and Biological Evaluation Studies of 5-Bromo-3-(((hydroxy-2-methylquinolin-7-yl)methylene)hydrazono)indolin-2-one and Its Metal (II) Comp... by Kuruba Siddappa, Nabiya Sultana Mayana

    Published 2014-01-01
    “…The Schiff base ligand 5-bromo-3-(((8-hydroxy-2-methylquinolin-7-yl)methylene)hydrazono)indolin-2-one (BHMQMHI) was prepared via condensation of 5-bromo-3-hydrazonoindolin-2-one and 7-formyl-8-hydroxy-2-methylquinoline and its Co(II), Ni(II), Cu(II), Zn(II), Cd(II), and Hg(II) complexes have been synthesized and characterized by elemental analysis, conductance data, magnetic susceptibility measurements, IR, UV-Vis, mass spectrometry, 1H NMR, ESR, XRD, and thermal studies. …”
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  20. 4880

    Changes in Cortical Activation Patterns in Language Areas following an Aerobic Exercise Intervention in Older Adults by Joe Nocera, Bruce Crosson, Kevin Mammino, Keith M. McGregor

    Published 2017-01-01
    “…The current study sought to evaluate if an aerobic exercise intervention can alter patterns of brain activity during a semantic verbal fluency task assessed by functional magnetic resonance imaging (fMRI). Thirty-two community-dwelling, sedentary older adults were enrolled to a 12-week aerobic “Spin” exercise group or a 12-week nonaerobic exercise control condition (Balance). …”
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