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  1. 921
    por Coles, Cynthia A., Rohail, Danial
    Publicado 2020
    “…Natural groundwater from the towns of Wabana and Freshwater and treated well water from the town of Wabana in Newfoundland and Labrador, Canada were tested separately and together in sand columns to study the removal of arsenic. The most ideal conditions for arsenic removal appeared to include an arsenic concentration of approximately 35 µg/L and lower, an Fe:As mass ratio in the order of 65 and lower, and aeration of the sand media. …”
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    Effect of aeration, iron and arsenic concentrations, and groundwater matrix on arsenic removal using laboratory sand filtration
  2. 922
    “…BACKGROUND: Sand flies (Diptera: Psychodidae) are medically important vectors of human and veterinary disease-causing agents. …”
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    Sand flies (Diptera: Psychodidae) in eight Balkan countries: historical review and region-wide entomological survey
  3. 923
    “…To improve the strength of cement-treated sand effectively, the use of various cement types was investigated at different curing temperatures and compared with the results obtained from similar mortars at higher cement contents. …”
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    Difference in Strength Development between Cement-Treated Sand and Mortar with Various Cement Types and Curing Temperatures
  4. 924
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    Effects of Hydrothermal Aging of Carbon Fiber Reinforced Polycarbonate Composites on Mechanical Performance and Sand Erosion Resistance
  5. 925
    “…Two different types of sand were used to investigate the effect of sand size distribution. …”
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    Experimental Investigation of the Flow Characteristics in Crude Oil Containing Sand and Gas Flowing Along Vertical Pipelines
  6. 926
    “…Coastal sands are important natural recreational facilities that have become hotspots for tourism and economic development. …”
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    Taxonomic and functional analyses reveal existence of virulence and antibiotic resistance genes in beach sand bacterial populations
  7. 927
    por Hoang, Van Thuan
    Publicado 2021
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    Comment to Sands et al. — No clinical benefit in mortality associated with hydroxychloroquine treatment in patients with COVID-19
  8. 928
    por He, Tong, Gray, Jessica, Gu, Ying
    Publicado 2021
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    Dataset of mineral contents of fine-sand and silt-sized soil particles from deserts in China and Mongolia
  9. 929
    “…Protocols for microbially induced carbonate precipitation (MICP) have been extensively studied in the literature to optimise the process with regard to the amount of injected chemicals, the ratio of urea to calcium chloride, the method of injection and injection intervals, and the population of the bacteria, usually using fine- to medium-grained poorly graded sands. This study assesses the effect of varying urease activities, which have not been studied systematically, and population densities of the bacteria on the uniformity of cementation in very coarse sands (considered poor candidates for treatment). …”
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    The role of bacterial urease activity on the uniformity of carbonate precipitation profiles of bio-treated coarse sand specimens
  10. 930
    “…The studied garnet sands from different mines in Australia, India and the U.S., and industrial garnet sands commercially available in Germany from different suppliers show average Sc concentrations of 93.7 mg/kg and 90.7 mg/kg, respectively, i.e. similar to red mud. …”
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    Potential of garnet sand as an unconventional resource of the critical high-technology metals scandium and rare earth elements
  11. 931
    “…FAs with two different finenesses were used to substitute ordinary Portland cement (OPC) at 20% by weight of binder. River sand (RS) with the same fineness as the FA was also used to replace OPC at the same rate as FA. …”
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    Influence of Cement Replacement with Fly Ash and Ground Sand with Different Fineness on Alkali-Silica Reaction of Mortar
  12. 932
    “…The "apanha de areia" (sand haversting) refers to the extraction of sand and gravel from the sea and rocks. …”
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    Gender and Environment in the Interior of Santiago Island/Cape Verde: Sand Harvesting From Women Heads of Families
  13. 933
    “…The phenomena of expansion (perlite) and peeling (vermiculite) have a positive effect on the reduction of the final sand strength and eliminate technological inconveniences (poor knocking out) that significantly limit the wide use of moulding sands with inorganic binders.…”
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    Dehydroxylation of Perlite and Vermiculite: Impact on Improving the Knock-Out Properties of Moulding and Core Sand with an Inorganic Binder
  14. 934
    “…In the present study, a quartz sand of 1.18–2.36 mm in size was examined, performing a total of 244 grain-to-grain crushing tests at two different speeds, 0.01 and 1 mm/min. …”
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    A Study on the Failure Behavior of Sand Grain Contacts with Hertz Modeling, Image Processing, and Statistical Analysis
  15. 935
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    ‘Somebody stuck me in a bag of sand’: Lived experiences of the altered and uncomfortable body after stroke
  16. 936
    “…This study aimed to examine the acute physiological effect of shuttle-run-based high-intensity intermittent exercise (HIIE) performed at the same relative speed (i. e., 100% PS(T−CAR)) on sand (SAND) and grass (GRASS) in male junior soccer players. …”
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    High-Intensity Intermittent Exercise Performed on the Sand Induces Higher Internal Load Demands in Soccer Players
  17. 937
    “…To remedy the absence of information on vector ecology in these environments, we examined phlebotomine sand fly distribution in 29 sites in Murcia City over a 3-year period, including the plots of 20 detached houses and nine non-urbanized sites nearby. …”
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    Density assessment and reporting for Phlebotomus perniciosus and other sand fly species in periurban residential estates in Spain
  18. 938
    “…The targeted tools are manufactured out of sand using the Binder Jetting process. These molds should fulfill the demands regarding flexural and compressive behavior while allowing for vacuum thermoforming of fiber reinforced thermoplastic sheets. …”
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    3D Printed Sand Tools for Thermoforming Applications of Carbon Fiber Reinforced Composites—A Perspective
  19. 939
    “…iso-Alkanes, a major fraction of the solvents used in bitumen extraction from oil sand ores, are slow to biodegrade in anaerobic tailings ponds. …”
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    Methanogenic Biodegradation of iso-Alkanes by Indigenous Microbes from Two Different Oil Sands Tailings Ponds
  20. 940
    “…Previous studies demonstrated that water film thickness (WFT) is a key factor that affects the fluidity of mortar. Changes in the sand-cement (S/C) ratio and polycarboxylate superplasticizer (PCE) dosage will affect the WFT. …”
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    Influence of Sand-Cement Ratio and Polycarboxylate Superplasticizer on the Basic Properties of Mortar Based on Water Film Thickness
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