Showing 481 - 500 results of 1,914 for search '"gold"', query time: 0.07s Refine Results
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    La gouvernance de l’orpaillage clandestin dans les localités ivoiriennes frontalières du Mali et du Burkina Faso by Kouamé Hyacinthe Konan

    Published 2022-12-01
    “…Debates on clandestine gold panning in Côte d'Ivoire have long focused on the environmental damage that this activity causes to the environments in which gold mining sites are located. …”
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    Article
  5. 485

    Aurophilic interaction-based aggregation of gem-digold(I) aryls towards high spin-orbit coupling and strong phosphorescence by Xiao-Yi Zhai, Liang Zhao

    Published 2025-01-01
    “…Abstract Luminescent gold(I) compounds have attracted intensive attention due to anticipated strong spin-orbit coupling (SOC) resulting from heavy atom effect of gold atoms. …”
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    Application of Golden Sine Algorithm in Hydrogeological Parameter Optimization by ZHOU Yourong, LI Na, ZHOU Fahui

    Published 2020-01-01
    “…To improve the accuracy of hydrogeological parameters, this paper conducts the simulationverification of golden sine algorithm (Gold-SA) algorithm by six standard test functions andcompares the simulation results with that of the particle swarm optimization (PSO) algorithm, andtaking two pumping test data as examples, optimizes two key parameters, i.e. transmissivitycoefficient and storage coefficient of theis formula by the Gold-SA algorithm and compares theresults with that of the PSO algorithm, wiring method and literature method. …”
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    Treatment of tumour tissue with radio‐frequency hyperthermia (using antibody‐carrying nanoparticles) by Reza Didarian, Ibrahim Vargel

    Published 2021-10-01
    “…In this step, gold ions are reduced around the magnetite nanoparticles. …”
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    Article
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    Thermospheric Temperature and Density Variability During 3–4 February 2022 Minor Geomagnetic Storm by F. I. Laskar, E. K. Sutton, D. Lin, K. R. Greer, S. Aryal, X. Cai, N. M. Pedatella, R. W. Eastes, W. Wang, M. V. Codrescu, W. E. McClintock

    Published 2023-04-01
    “…Abstract Themospheric conditions during a minor geomagnetic event of 3 and 4 February 2022 has been investigated using disk temperature (Tdisk) observations from Global‐scale Observations of the Limb and Disk (GOLD) mission and model simulations. GOLD observed that the Tdisk increases by more than 60 K during the storm event when compared with pre‐storm quiet days. …”
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    Crisis risk in the 21st century and their impact on the banking sector by Vesić Tamara, Petronijević Jovan, Ravić Nenad

    Published 2020-01-01
    “…On the other hand, due to the corona virus pandemic, many factories have stopped producing gold, the transport of goods is functioning slowly, which has led to a shortage of gold, so it is almost impossible to buy a gold ducat or gold bar in Europe. …”
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  17. 497

    Effect of Ion Magnetron Sputtering Method on Scanning Electron Microscopy (SEM)Images of Materials with Different Surface Properties by ZHANG Jie, ZOU Junwen, LIU Xueguang, LI Xiaoying

    Published 2024-12-01
    “…In order to investigate the effect of ion magnetron sputtering parameters on the scanning electron microscopy (SEM) images of nonconductive materials with different surface properties, the advantages and limitations of various ion magnetron sputtering conditions, including target material, sputtering time and sputtering cycles were studied, along with their applicable ranges.Results showed that the gold target exhibited good continuity with large grain nucleation of gold.Due to its high sputtering energy, it easily caused thermal loss on the sample surface, and the gold grains adhered to the surface.Therefore, gold targets were found to be suitable for low -magnification SEM imaging(<10 000) and materials with a certain surface hardness.In contrast, the platinum target showed poor continuity with small platinum grain nucleation and lower sputtering energy.It was more likely to embed into the sample surface, forming a morphological framework, making it suitable for high-magnification SEM imaging (>30 000) and most non-conductive materials.Using a method of fewer, multiple ion magnetron sputtering cycles, reducing the sputtering cycles appropriately not only weakened the effect of the gold film on the material’s morphology and structure but also helped conserve resources and protect the environment.This result provides experimental guidance for researchers to scientifically and accurately analyze SEM images of samples.…”
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  18. 498

    Role of Toll-Like Receptor 2 in Regulation of T-Helper Immune Response in Chronic Obstructive Pulmonary Disease by Karolina A. Sidletskaya, Tatyana I. Vitkina, Yulia K. Denisenko, Elena E. Mineeva

    Published 2021-01-01
    “…The study included 323 smokers/ex-smokers with stable COPD (GOLD I, GOLD II, and GOLD III) and 97 healthy nonsmokers (control group). …”
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  19. 499

    The relationship between the countries' performances at the major sport events with their performance at the Olympic Games by Bahman Asgarı, Shahab Bahramı

    Published 2015-03-01
    “…The results showed that there is positive and significantly relationship between the number of medals of gold, silver, bronze and total medals won by countries at former Olympic Games, world championships, Asian and Pan-American Games with the number of Medals of gold, silver, bronze and total medals won at upcoming Olympic Games, However, there is not significantly relationship between the number of medals of gold, silver, bronze and total medals won at all-African Games with the number of medals of gold, silver, bronze and total medals won at Olympic Games.…”
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