Spreading of point ‐source liquid spills in a thin rectangular packed bed under simulated marine conditions

AbstractTwo-dimensional visualizations of point-source liquid spills in porous media were performed in a flat rectangular packed bed, emplaced on a robotized hexapod, to emulate roll/pitch marine oscillations. The extent to which the directional modulation of liquid gravity and the moving-bed inertial forces affect the liquid spills was the study's central aim. Spill morphology deviations were dictated by gravity force oscillations, while Coriolis/Euler/centrifugal forces were confined to secondary roles. Multiple gravity-driven liquid branching with departures from the longitudinal direction, not only boosted wetting but also symmetrized the developing spills while suppressing the wall-biased liquid influx, which impaired inclined beds. Wetting exhibited asymmetric sigmoidal deceleratory transients, reminiscent of many physicochemical transformations with skewed activation energy distribution. The parameters describing the dispersive kinetics and allied activation energy distribution of wetting —analogized to a phase change transition—were interpreted in terms of hexapod kinematic parameters.
Source: AIChE Journal - Category: Science Authors: Tags: TRANSPORT PHENOMENA AND FLUID MECHANICS Source Type: research

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AbstractA previous study evaluating two swabbing systems found that DNA was best recovered from sterile metal substrates using an Isohelix ™ swab wetted with isopropyl alcohol rather than a Rayon swab with water as the wetting agent. We tested the same swabbing systems on metal (aluminum, brass, and stainless steel) and plastic substrates in a regularly touched environment to simulate the non-deliberate transfer of touch evidence lik ely seen in a casework scenario, to ascertain the performance of these swabs in an uncontrolled situation. Higher amounts of touch DNA were recovered with Isohelix™ swabs (0.5 &nda...
Source: Forensic Science, Medicine, and Pathology - Category: Forensic Medicine Source Type: research
Increasing rice planting density can compensate for the negative impact of AWD on yield by increasing spikelets density, which may be a way to eliminate the risk of AWD reducing yield. AbstractThe Chinese government regards ensuring food security and developing water-saving agriculture as an important national strategy and that carrying out relevant research has important practical significance and production application value. A two-year field experiment was conducted to explore the compensation potential in rice yield by using rice varieties with different panicle size under two water management regimes (conventional wat...
Source: Food and Energy Security - Category: Food Science Authors: Tags: ORIGINAL ARTICLE Source Type: research
This erratum corrects the value of the wetting layer thickness provided in our Article [Opt. Express29, 34024 (2021)10.1364/OE.438708]. ...
Source: Optics Express - Category: Physics Authors: Source Type: research
Environ Sci Pollut Res Int. 2021 Oct 16. doi: 10.1007/s11356-021-16685-2. Online ahead of print.ABSTRACTTo mitigate environmental pollution caused by the escape of dust during coal storage and transportation, humic acid (HA) and grafted acrylamide (AM) were used as raw materials to prepare a composite dust suppressant suitable for coal storage and transportation. Single-factor experiments were used to explore the optimal synthesis conditions of the dust suppressant, and the microstructure of the product was studied using Fourier-transform infrared spectroscopy (FTIR), proton nuclear magnetic resonance (1H-NMR), scanning el...
Source: Environmental Science and Pollution Research International - Category: Environmental Health Authors: Source Type: research
This article reviews the application of highly heat and pressure resistant polyimide material for the development of membranes/materials that exhibit unique super-wettability, the characteristics pivotal for the efficient separation of oil-water mixture and emulsion. The polymerization of imide monomer in polyimide brings about the required porosity in the material, which in turn renders the crucial surface roughness, which is instrumental for establishing the desired super-wettability on the polyimide based membrane materials, in addition to the mechanical and thermal robustness. The membrane as the oil-water filtering me...
Source: Advances in Colloid and Interface Science - Category: Chemistry Authors: Source Type: research
Chemphyschem. 2021 Oct 13. doi: 10.1002/cphc.202100597. Online ahead of print.ABSTRACTBenzene bisamides are promising building blocks for supramolecular nanoobjects. Their functionality depends on morphology and surface properties. However, a direct link between surface properties and molecular structure itself is missing for this material class. Here, we investigate this interplay for two series of 1,4-benzene bisamides with symmetric and asymmetric peripheral substitution. We elucidated the crystal structures using NMR crystallographic strategies, determined the nanoobject morphologies and derived the wetting behaviour o...
Source: Chemphyschem - Category: Chemistry Authors: Source Type: research
ACS Applied Materials&InterfacesDOI: 10.1021/acsami.1c15823
Source: ACS Applied Materials and Interfaces - Category: Materials Science Authors: Source Type: research
Soft Matter, 2021, Advance Article DOI: 10.1039/D1SM00831E, PaperJintao Lu, Guohong Gao, Riping Liu, Chen Cheng, Tao Zhang, Zhiguang Xu, Yan Zhao Emulsion-templated macroporous polymers show drying condition-dependent wetting properties, densities, and compressive properties. To cite this article before page numbers are assigned, use the DOI form of citation above. The content of this RSS Feed (c) The Royal Society of Chemistry
Source: RSC - Soft Matter latest articles - Category: Chemistry Authors: Source Type: research
A novel approach to prevent the permeation of liquid across porous materials by a synergistic effect is reported. Both fabrics are individually susceptible to be wetted and penetrated by low surface tension liquids. However, when they are assembled, they can prevent the low surface tension liquids from penetrating because of the wettability gap between the two fabrics. AbstractBlocking liquid penetration in porous materials is a key function for several applications including chemical protective clothing (CPC), wound healing, and hygiene products. Enormous efforts are made to prevent liquid penetration through porous media...
Source: Small - Category: Nanotechnology Authors: Tags: Research Article Source Type: research
ConclusionsOur systematic review with meta-analysis supports the reciprocal association between enuresis and ADHD. Furtherstudies are necessary to build more robust evidence.
Source: Pediatric Nephrology - Category: Urology & Nephrology Source Type: research
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