AI Article Synopsis
- Gravel beds can effectively reduce sand-dust emissions and lower sand-dust flux, as shown through wind-tunnel experiments and observations at the Mogao Grottoes.
- A significant correlation was identified between the roughness of the gravel and its effectiveness in trapping wind-transported sand.
- The study determined optimal gravel sizes and coverage: 75% coverage for small gravel, 40% for medium, and 45% for large gravel, with initial wind speed also playing a crucial role in sand trapping.
Article Abstract
Gravel beds can prevent sand-dust emission and weaken sand-dust flux. We used wind-tunnel experiments and field observations on artificial gravel beds above the Mogao Grottoes to quantify their impact. In the report, we identified a significant correlation between gravel roughness and its ability to trap wind-transported sand. The optimal combinations of gravel diameter and coverage were determined. The greatest roughness is achieved when small gravel coverage is 75%, medium 40% and large 45%. We found that initial wind speed and gravel coverage are the key factors controlling the amount of sand trapped by the gravel beds.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3949251 | PMC |
| http://dx.doi.org/10.1038/srep04341 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Performance of in nutrient removal and tolerance in Halloufa Wetland, Algeria.
Int J Phytoremediation
December 2024
Department of Process Engineering, Faculty of Technology, University of El Oued, El Oued, Algeria.
Phytoremediation is an effective and sustainable method for removing pollutants from wastewater. This study investigates the phytoremediation capabilities of , a halophytic Saharan plant species, for excess phosphorus and nitrogen in domestic wastewater. The plants were sourced from the "" wetland, a wastewater discharge area in the north of El-Oued, south-eastern Algeria.
View Article and Find Full Text PDFSpecies of Wadicosa (Araneae, Lycosidae): a new species from the southeastern Arabian Peninsula.
Zootaxa
October 2024
Dubai Natural History Group; PO Box 9234; Dubai; United Arab Emirates.
Article Synopsis
- Wadicosa arabica sp. nov. is a newly identified spider species found in Oman and the United Arab Emirates, distinguished from similar species by unique features in its male anatomy.* -
- This spider belongs to the W. fidelis group and is primarily located in the gravel and pebble beds of temporary streams in the Hajar Mountains region.* -
- The study includes observations on the courtship behavior of W. arabica sp. nov., highlighting its prominence in its natural habitat.*
Substrate composition has been widely recognised as a primary variable shaping lotic macroinvertebrate communities at the habitat unit level. However, fundamental understanding of how communities inhabiting mineralogical habitats (i.e.
View Article and Find Full Text PDFAssociation of Shift-Level Organizational Factors with Nosocomial Infection in the Neonatal Intensive Care Unit.
J Pediatr Clin Pract
September 2024
McGill University, Montréal, QC, Canada.
Article Synopsis
- The study aimed to analyze how different shift-level nursing organizational factors impact the risk of nosocomial infections (NIs) in very preterm infants in NICUs.
- Conducted from 2014 to 2018 across three tertiary NICUs in Quebec, the research included 1921 infants and used mixed-effect logistic regression to evaluate data on nursing overtime ratios (OTRs) and nursing provision ratios (NPRs).
- Results showed that higher nursing overtime was linked to increased odds of NIs, while a higher number of actual nurses compared to recommended levels was associated with lower odds of NIs, indicating the importance of proper staffing in preventing infections.
Acclimatize experimental approach to adjudicate hydraulic coefficients under different bed material configurations and slopes with and without weir.
Heliyon
June 2024
Water Resources Research Center, Arba Minch University, Ethiopia.
The primary purpose of this study was to evaluate the hydraulic coefficient of coarse aggregate grain size beds and hydraulic parameters under random and perpendicular bed configurations, as well as to explore the discharge coefficient for rectangular weirs. The research objectives were to compare flow resistance coefficients, evaluate the discharge coefficient for rectangular weirs, investigate the relationship between roughness coefficient and hydraulic parameters, and validate the theoretical hydraulic equation for the rectangular weir. This was achieved by analysing different bed configurations, bed slopes, and 20 and 30-mm bed materials.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!