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  1. 521
    “…On the one hand, as the degree of oxidation increases, acidic substance will neutralize with CaCO(3) and CaMg(CO(3))(2), resulting in the loss of cemented substance and the decrease of cementation force between tailing sand particles as well as the gradual destruction of the integrity of tailing sand. …”
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    Micro-structure and morphology of tailings sand under different oxidation and acidification degree
  2. 522
    “…Obtained natural sands can present different particle size distributions (PSD), although they have the same mineralogical origin. …”
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    Effects of Particle Size Distribution of Standard Sands on the Physical-Mechanical Properties of Mortars
  3. 523
    “…Nevertheless, the development of environmentally friendly sand-fixing materials is still a tremendous challenge for preventing desertification. …”
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    Preparation and Properties of Bio-Based Attapulgite Copolymer (BAC) Sand-Fixing Material
  4. 524
    “…The focus of this research is to evaluate multiple barrier treatment using chitosan, an organic coagulant–flocculant, to improve microbial and turbidity reductions in combination with sand filtration. Bench-scale intermittently operated sand filters with 16 cm layers of sands of two different grain sizes representing slow and rapid sand filters were dosed daily over 57 days with microbially spiked surface water volumes corresponding to household use. …”
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    Evaluation of Chitosans as Coagulants—Flocculants to Improve Sand Filtration for Drinking Water Treatment
  5. 525
    por Juang, Chuen-Ul, Kuo, Wen-Ten
    Publicado 2023
    “…The optimal compressive strength (83.62 MPa) was achieved when a W/B ratio of 0.21 was used, when the sand content was 70%, and when a 2% polycarboxylate superplasticizer (PCE) was added, whereas the optimal flexural strength (20.86 MPa) was achieved when 2.5% PCE was added. …”
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    Engineering Properties of Green and Ecofriendly Grouting Materials with Different Sand Filling Ratios
  6. 526
    “…Assessing the economic impact of sand and dust storms provides critical insights to policy development and reforms; a subject that is gaining more attention as risk management becomes the dominant approach for hazard mitigation policies. …”
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    Assessing the impact of sand and dust storm on agriculture: Empirical evidence from Mongolia
  7. 527
    “…Amazonian phlebotomine sand fly fauna is one of the most diverse in the world. …”
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    Sand fly (Diptera: Psychodidae: Phlebotominae) records in Acre, Brazil: a dataset
  8. 528
    “…In this paper, for the first time, we present a sand cat swarm optimization (SCSO) algorithm-based state feedback controller design for open-loop unstable systems. …”
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    Sand cat swarm optimization-based feedback controller design for nonlinear systems
  9. 529
    Libro
    Juan de la roca
  10. 530
    por Sand, George, 1804-1876
    Publicado 1943
    Libro
    Las damas verdes : novela
  11. 531
    por Sand, George, 1804-1876
    Publicado 1856
    “…Oeuvres de George Sand…”
    Libro
    La Mare au diable /
  12. 532
    por Sand, George, 1804-1876
    Publicado 1959
    Libro
    La mare au diable
  13. 533
    “…In intervention daycares, children aged 3–5 years were exposed to playground sand enriched with microbially diverse soil. In placebo daycares, children were exposed to visually similar as in intervention daycares, but microbially poor sand colored with peat. …”
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    Skin, gut, and sand metagenomic data on placebo-controlled sandbox biodiversity intervention study
  14. 534
    “…The extensive applications of manufactured sand (AS) in cement-based composites were restricted because of its coarse surface texture, poor gradation and inevitable agglomeration. …”
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    Chemically functionalized manufactured sand as the novel additive for enhancing the properties of cement-based composites
  15. 535
    “…One such understudied family is the sand lances (Ammodytidae, literally: “sand burrower”), a globally distributed clade of over 30 fish species that tend to avoid tidal currents by burrowing into the sand. …”
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    A chromosome-scale reference genome assembly of the great sand eel, Hyperoplus lanceolatus
  16. 536
    “…Cutaneous leishmaniasis (CL) is one of the most important diseases in Iran. Iranian sand flies belong to three Oriental, Palearctic, and Afrotropical Regions. …”
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    Bionomics of Phlebotomine Sand Flies in Different Climates of Leishmaniasis in Fars Province, Southern Iran
  17. 537
    “…BACKGROUND: Phlebotomine sand flies are vectors of Leishmania species, the causative agents of leishmaniasis in the world. …”
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    Bioecological Study on the Sand Flies (Diptera: Psychodidae, Phlebotominae) in Sari County, North of Iran
  18. 538
    “…In conclusion, inbreeding is not a driver of telomere dynamics in the sand lizard (Lacerta agilis) study system.…”
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    Inbreeding effects on telomeres in hatchling sand lizards (Lacerta agilis): An optimal family affair?
  19. 539
    “…The CFRP rebar was coated with sand to enhance the adhesive strength of the concrete. …”
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    Determination of Mechanical Properties of Sand-Coated Carbon Fiber Reinforced Polymer (CFRP) Rebar
  20. 540
    “…The discrete element particle flow software PFC3D is used to construct a three-dimensional numerical model of desert sand-based backfill material. The parameters such as sample sand content, porosity, desert sand particle size distribution, and model size are changed to study their impact on the bearing performance and scale effect of desert sand-based backfill materials. …”
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    Numerical Investigation on the Compressive Behavior of Desert Sand-Based Backfill Material: Parametric Study
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