Showing 7,061 - 7,080 results of 7,249 for search '"metals"', query time: 0.08s Refine Results
  1. 7061

    Combined Use of Excimer Laser and High-Speed Rotational Atherectomy to Overcome a Severely Calcified Lesion in Endovascular Therapy by Keisuke Nakabayashi, Shinya Hata, Nobuhito Kaneko, Akihiro Matsui, Kazuhiko Tanaka, Hiroshi Ando, Minoru Shimizu

    Published 2019-01-01
    “…Subsequently, we could dilate the CTO lesion with a conventional balloon followed by bare metal stent deployment. The right ankle-brachial index of the patient improved from being unmeasurable to 0.79, and the intermittent claudication disappeared. …”
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  2. 7062

    Simultaneous Measurements of PM2.5- and PM10-bound Benzo(a)pyrene in a Coastal Urban Atmosphere in Poland: Seasonality of Dry Deposition Fluxes and influence of Atmospheric Transpo... by Patrycja Siudek, Wiesława Ruczyńska

    Published 2021-07-01
    “…., coal-fired power plants, refinery, solid waste burning, metal recycling plants) and residential sources (domestic heating units), and to the meteorological situation that led to the reduced dissipation of air pollutants and their transport outside the study domain. …”
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  3. 7063

    Effect of Additives on Electrodeposition of Copper in Ch Cl-Gl A Low Eutectic Solvent by LIU Yang, HAO Jianjun, YIN Hongkun, WANG Xinhui

    Published 2024-12-01
    “…The use of additives facilitates the deposition of copper on metal substrates.In this work,using choline chloride glacial acetic acid(Ch Cl-Gl A) as a low eutectic solvent and copper acetate as the main salt, the effects of ascorbic acid(C6H8O6), disodium ethylenediamine tetraacetic acid(EDTA-2Na) and diethylenetriaminepentaacetic acid(DTPA) as additives on electrodeposition of copper on iron substrate were investigated.Electrochemical behavior was studied by cyclic voltammetry (CV) and chronoamperometry (CA); scanning electron microscopy(SEM) and X-ray diffraction(XRD) were used to observe and analyze the morphology and composition of the coating.The UV-visible absorption spectrum of the complex formed in the electrodeposited solution with different additives was analyzed by a UV-Vis-NIR spectrophotometer.Results indicated that in Ch Cl-Gl A, the electrodeposition of copper involved two steps of oxidation-reduction with the first step of Cu2+→Cu+and the second step of Cu+→Cu.All three additives promoted the deposition of copper in Ch Cl-Gl A,and ascorbic acid had the best effect,which could obtain a copper coating with good performance at room temperature.The electrodeposition of copper in Ch Cl-Gl A followed a three-dimensional instantaneous nucleation process and was an irreversible reaction controlled by diffusion.Moreover,the diffusion coefficients of Cu2+and Cu+could reach 4.003 9×10-7 cm2/s,4.762 7×10-7 cm2/s,respectively.The copper crystal prepared with ascorbic acid as additive was a polygonal sheet-like structure with distinct grains,and the optimal crystal plane was the (111) crystal plane.Besides,the average grain sizes of the copper layer with additives DTPA,EDTA-2Na and C6H8O6 were 50.71,55.12 and 52.73 nm.The average grain size of the copper layer without additive was 44.73 nm.…”
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  4. 7064

    Phytomedicine nanoformulations for Parkinson's disease by Chinthu V. Saji, K P Mohanakumar, Rajesh A Shenoi

    Published 2025-02-01
    “…Conclusions: Phytomedicines formulated using nanoliposomes, nanoemlusions, polymeric nanoparticles, nanocrystals and metal nanoparticles have shown promise in improving the drug bioavailability and BBB penetration, resulting in better therapeutic effect in PD cellular and animal models. …”
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  5. 7065

    Radiographic Evaluation of The Bone Density Around Tooth-Anchored One-Piece Immediate-Loading Dental Implant by Bangen Mohammed Karam, Bahar Jaafar Selivany, Huda Jameel Qasim, Rafah Hussein Mohammed

    Published 2024-12-01
    “…Functional loading began seven days post-implantation using fixed porcelain-fused-to-metal (PFM) prostheses. Grayscale values and texture parameters, including mean, standard deviation (SD), and coefficient of variation (CV), were analyzed in regions of interest (ROIs) around the implants. …”
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  6. 7066

    Hemoprotein dalam Tubuh Manusia by Husnil Kadri

    Published 2012-07-01
    “…Photosynthetic pigment of plants (chlorophyll) and human’s hemoglobin have the same structure but the metal ions are different. Chlorophyll has magnesium and human’s hemoglobin has iron (Fe). …”
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  7. 7067
  8. 7068
  9. 7069

    Synthesis and Application of New Ruthenium Complexes Containing β-Diketonato Ligands as Sensitizers for Nanocrystalline TiO2 Solar Cells by Ashraful Islam, Surya Prakash Singh, Liyuan Han

    Published 2011-01-01
    “…These heteroleptic complexes exhibit a broad metal-to-ligand charge transfer absorption band over the whole visible range extending up to 950 nm. …”
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  10. 7070

    A 5.5–7.5‐GHz band‐configurable wake‐up receiver fully integrated in 45‐nm RF‐SOI CMOS by Rui Ma, Florian Protze, Frank Ellinger

    Published 2022-10-01
    “…Abstract This work investigates a 5.5–7.5‐GHz band‐configurable duty‐cycled wake‐up receiver (WuRX) fully implemented in a 45‐nm radio‐frequency (RF) silicon‐on‐insulator (SOI) complementary‐metal‐oxide‐semiconductor (CMOS) technology. Based on an uncertain intermediate frequency (IF) super‐heterodyne receiver (RX) topology, the WuRX analogue front‐end (AFE) incorporates a 5.5–7.5‐GHz band‐tunable low‐power low‐noise amplifier, a low‐power Gilbert mixer, a digitally controlled oscillator (DCO), a 100‐MHz IF band‐pass filter (BPF), an envelope detector, a comparator, a pulse generator and a current reference. …”
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  11. 7071

    Preparation and Protective Performance of High-Reflection and High-Thermal Insulation Laser Protection Coatings by LI Shuwen, WU Lingfeng, YANG Guanjun, CHEN Lin

    Published 2024-12-01
    “…Laser weapons have entered the actual combat application stage, and the research on anti-laser protection for air and space weapons is becoming increasingly urgent.Prolonged high-energy laser irradiation leads to problems such as reduced metal reflectance,mass loss of ablated layer of the ablative layer and insufficient heat insulation toughness.Based on this,a composite laser protection strategy based on the principles of reflection and heat insulation was proposed.In this study, by adjusting spraying power, spraying distance and other parameters, supersonic flame spraying technology and plasma spraying technology were used to prepare NiCoCrAlTaY bond coating and yttria-stabilized zirconia(YSZ) top coating double-layer coatings, to explore the influence of surface roughness and porosity on reflectivity, and to investigate the laser protection performance of the coatings.Results showed that the larger the spraying power or spraying distance, the more obvious the layer effect, and the more cross-sectional pores were observed in the coating.The surface roughness of the coating decreased first and then increased with the increase in spraying distance.When the secondary reflection structure was removed, the coating surface had Ra=1.8 μm.When Ra=0.5 μm, the wedge-shaped structure of the coating increased the reflectivity by about 2.4%compared to that of the coating when Ra=1.8 μm.It was pointed out that the layered pores were key to the high-reflection wedge structure, the spherical voids were the laser absorption points,and the process parameter of 14.7%porosity (39 kW,100 mm) was the best.In the laser ablation experiment,with the increase in laser power density, the cracks in the coating gradually increased until holes were ablated.The line ablation rate increased approximately in a parabolic manner.With low laser power density (<3 800 W/cm2), the surface structure changed slightly; as the power increased, the surface cracks increased and deepened, and the petal-like structure in the recondensing zone increased.With high laser power density (>8 050 W/cm2), partial peeling and ablation of the coating surface caused the coating to fail.…”
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  12. 7072

    Adsorption characteristics of metronidazole on CoZr-LDH and its GO nanocomposite: Experimental and theoretical study by Edris Jamshidi, Fateme Fathabadi, Faranak Manteghi, Rahime Eshaghimalekshah

    Published 2025-02-01
    “…In this study, Tetravalent and divalent metal cations were employed. The LDH and LDH/GO were characterized by SEM, EDS, IR, BET, and XRD analyses. …”
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  13. 7073
  14. 7074

    Research Progress and Prospect of High-Nitrogen Austenitic Stainless Steel by Jiao Xiaofei, Li Qun, Wang Dongjia, Wang Shuhuan, Ni Guolong

    Published 2025-02-01
    “…Furthermore, a summary is provided around various forming processes including Hot Isostatic Pressing, Spark Plasma Sintering, Metal Injection Molding, Hot Pressing Sintering, Cold Pressing Forming, and Additive Manufacturing. …”
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  15. 7075

    Inorganic polyphosphate and the stringent response coordinately control cell division and cell morphology in Escherichia coli by Christopher W. Hamm, Michael J. Gray

    Published 2025-02-01
    “…PolyP can act as an energy and phosphate storage pool, metal chelator, regulatory signal, and chaperone, among other functions. …”
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  16. 7076

    A Novel BiOBr/CAU‐17 Composite with Enhanced Photo‐Catalytic Performance for Dye Degradation and Removal of Tetracycline Antibiotic Under Visible Light by Mansoor Akhtar, Shifa Ullah Khan, Ghulam Mustafa, Muhammad Ahmad, Tansir Ahamad

    Published 2025-01-01
    “…Abstract In order to improve the low specific surface area and high recombinant light generation carriers of BiOBr, loading BiOBr onto suitable Metal Organic Frameworks (MOFs) is an effective strategy to unleash its efficient visible light response and intrinsic catalytic activity. …”
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  17. 7077

    Fracture resistance and failure mode of three esthetic CAD-CAM post and core restorations by Islam T. Fathey, Amir Shoukry Azer, Islam M. Abdelraheem

    Published 2024-05-01
    “…Aim of the study This study aimed to evaluate the fracture resistance of three non-metallic esthetic post and core restorations and their modes of failure. …”
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  18. 7078

    Boundary layer flow of a non-Newtonian fluid over an exponentially stretching sheet with the presence of a heat source/sink by Vinod Y., K.R. Raghunatha, Suma Nagendrappa Nagappanavar, Nodira Nazarova, Manish Gupta, Sangamesh

    Published 2025-03-01
    “…This research is significant for MHD flows of non-Newtonian fluids, with applications in polymer extrusion, metal casting, and cooling technologies. The inclusion of thermal radiation and heat source/sink effects broadens its relevance to energy-intensive systems such as nuclear reactors and thermal insulation. …”
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  19. 7079

    Engineering active sites in ternary CeO2-CuO-Mn3O4 heterointerface embedded in reduced graphene oxide for boosting water splitting activity by Sahar Jafari, Zohreh Shaghaghi

    Published 2025-02-01
    “…This superior performance is due to: (i) active multi-metal sites that produce strong synergistic effects; (ii) the high conductivity of rGO, which faciliate favorable electron transfer; and (iii) the homogenous anchoring of CeO2-CuO-Mn3O4 on rGO, which increases the number of active sites available on the catalyst surface.…”
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  20. 7080

    DSC-SeNet: Unilateral Network with Feature Enhancement and Aggregation for Real-Time Segmentation of Carbon Trace in the Oil-Immersed Transformer by Liqing Liu, Hongxin Ji, Junji Feng, Xinghua Liu, Chi Zhang, Chun He

    Published 2024-12-01
    “…Large oil-immersed transformers have metal-enclosed shells, making it difficult to visually inspect the internal insulation condition. …”
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