..., dredging of rivers and lakes, and environmental protection dredging construction (Chen et al., 2018; Wang et al., 2021). During the construction process, the flow velocity, concentration and production of the dredger are related to many factors, such as the speed of the mud pump, the speed of the reamer...

... of the ice flow, concerning ice concentration, as well as the thickness of ice of various ages at the Fram Strait site. The seasonal variability of the age composition of the ice flow in the Fram Strait for the winter period of 1997-2021 is analyzed. The seasonal cycle of changes in the average thickness...

... commonly used in concentrator, and realized a series of functions such as automatic plate pulling, pressing plate, filtration, pressure maintaining, etc. At the same time, the structure and feeding mode of plate and frame filter press are optimized, which greatly improves the operation stability...

... ABSTRACT To solve the problem of sewage discharge in Dongtou district, Wenzhou, China, the site selection and planning of sewage outfalls into the sea is investigated in this study. The data of flow field variation and pollutant concentration diffusion from four candidate sites of the sewage...

... island artificial island water exchange capacity retention rate water level exchange time concentration pollutant discharge flood tide water exchange haihua island water body culvert bridge pollutant tide current velocity sea area yangpu bay ABSTRACT A two dimensional...

... fluid dynamics micro-nano bubble wavelength oxygenation port flow in porous media outflow rate equation feed particle diffusion free surface deep-sea cage fish feed ocean engineering concentration injection method upstream oil & gas flow field aquaculture cage flow velocity...

... be the use of biodegradable and non-corrosive water thickeners. These increase the viscosity of the water in a controlled manner and produce a lower permeability of the sand body with the same mechanical properties. flow in porous media concentration hpmc solution shear box test viscosity...

... concentration characteristic dissipation tank suction hopper dredger deposition inlet concentration overflow concentration energy dissipation tank mixture model duration curve upstream oil & gas fine sediment efficiency settlement characteristic scenario hopper particle size...

... erosion amount deposition amount net erosion amount lagoon qilihai lagoon ideal model lagoon entrance tidal channel evolution runoff sediment geomorphological evolution tidal creek flow velocity sediment transport concentration hydrodynamic condition ABSTRACT Nowadays...

... performance between carbon fiber and resin is a key factor affecting the mechanical properties of materials. In order to improve the mechanical properties of 3D printed continuous carbon fiber reinforced polycarbonate (PC) composites, the continuous carbon fiber was pretreated with different concentrations...

... dependence current density activation energy reaction entry efficiency steel mining hydrogen permeation absorption concentration mechanism Proceedings of the Thirty-second (2022) International Ocean and Polar Engineering Conference Shanghai, China, June 5 10, 2022 Copyright © 2022...

... of Cobalt-rich ferromanganese Crusts (CRCs) were discovered on the deep seafloor. They contain metals like Cobalt, Nickel and platinum, which are necessary for producing batteries, in high concentration. Thus, CRCs are expected as a new supply source of these metals. The Japanese government established...

... to the liquid at the impeller outlet. Secondly, with the increase of pump speed and particle concentration, the trend of particle movement to the blade pressure surface is more significant (Mehmet et al., 2001; Kadambi et al., 2004; Xu et al., 2017). However, this technology can not obtain the trajectory...

... in the Yangtze Estuary wetlands (Uthe et al. 1971; Wang et al. 2015; Han et al. 2017; Sun et al. 2018; He et al. 2018; Li et al. 2020; Wang et al. 2021; Zhanget al. 2021). sediment salinity cd concentration desorption rate water management concentration desorption amount kinetic model pseudo-first...

... flexible pipes is investigated. Based on various attenuation models, the ECAH model, UA model, HT model and BLBL model are compared, and the ultrasonic attenuation mechanisms at different frequencies, particle sizes and concentrations are analyzed. The multilayer model was established by COMSOL...

... operation of the whole dredger, to keep the conveying system working safely and efficiently through reasonable optimization and adjustment measures, on the basis of real-time monitoring of relevant operation parameters. sustainability sustainable development social responsibility concentration...

... upstream oil & gas drilling fluid property depressant transportation zy oil fluid loss control drilling fluid selection and formulation pour point depressant shear rate drilling fluid formulation pipeline pour point treatment temperature heat treatment temperature concentration...

... ABSTRACT We use monitoring data of petroleum hydrocarbons (PHs) after ten years as indicators to assess the long-term environmental impact of the Dalian "7.16" Oil Spill on seawater and sediments. Compared with the values measured ten years ago, the monitoring PHs concentrations in water...

... simulation and discussed the distribution and formation of gas concentration. Kim et al. (2013) used the FLACS software to simulate and analyse the gas explosion due to the hydrogen gas leakage. Their simulation results are verified by using the experimental data on hydrogen jets. Kountouriotis et al (2014...

... concentration mg kg water management surface sediment water sample sediment sediment quality guideline heavy metal biological effect heavy metal distribution heavy metal concentration yangtze river estuary sediment sample ABSTRACT With the rapid development of economy...