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Efficient visualization of vascular structures is essential for diagnosis, therapy planning and medical education. In this paper, we present an approach which is based on a prior binary segmentation result, point extraction and Poisson surface reconstruction. The proposed method has been applied to liver vessel trees and aortic vessel trees. The experimental results show that it can effectively achieve...
Research on cardiopulmonary resuscitation (CPR) has always been important and thus focused on by the medical community. The hemodynamic effects of CPR have a direct impact on the survival rate of and prognosis for patients. Research shows that performing Enhanced External Counter-Pulsation (EECP) on lower limbs during the recoil phase of chest compression improves hemodynamic effects. AEI-CPR is an...
To minimize the damage resulting from oil spill accidents, it is necessary to respond quickly with an appropriate strategy. Accurately forecasting the behavior of the spilled oil is crucial for a successful recovery operation and protection of marine resources. Therefore, the numerical modeling and simulation of the spilled oil at sea plays an important role in the oil spill response and contingency...
Marine water quality model is complicated because of its multi-parameter and multi-response characteristic. In this paper, a new method based on data-driven model (DDM) is developed to retrieve the value of model parameters for model calibration. All training data are calculated by numerical water quality model from results of multi-parameter matching design cases. The basic idea is to find out the...
The total hardness in aquifer often increased rapidly in urban area, and it may caused by the hydrogeochemistry. However it is not clear where the hydrogeochemistry happened in aquifer or in vadose zone. In this paper, mineral dissolution and cation exchange relevant to total hardness were simulated by the hydrogeochemical transport model in order to research the influences of the mineral dissolution...
Computational structure prediction, including de novo and homology modeling, is an important tool for membrane protein studies. Developing an accurate scoring function that can be used for structure discrimination and assessment remains a challenge. In our previous work, we have analyzed a set of high-resolution membrane protein structures using the network approach developed in our lab and proposed...
In this paper, we investigate a chemostat model with delay and periodically pulsed input nutrient. We obtain the sufficient condition for global attractivity of the microorganism-extinction periodic solutions and the permanence of the system. And, we also prove that all solutions of system are ultimately uniformly bounded.
One example of grid reconstruction and blood flow simulation for a patient with internal carotid artery aneurysms was presented. The method accurately duplicates the geometry to provide computer simulations of the blood flow. Initial images were obtained by using CT angiography in DICOM format. The image was processed by using MIMICS software, and the 3D fluid model (blood flow) and 3D solid model...
A discrete mathematical model with time delays for the transmission of malaria is established. The basic reproductive number R0 of the model is defined. Numerical simulations are given to show that the disease free equilibrium is stable when R0<;1 and the unique positive equilibrium is locally asymptotically stable when R0 > 1. The elasticity of the basic reproductive number with respect to...
A surface electromyography (EMG) based muscle activities imaging (sEMG-MAI) approach has been developed using the bioelectrical source reconstruction approach to minimally invasively reconstruct muscle activities in the three dimensional (3D) space of the periurethral muscles (including urethral and anal sphincter, and the surrounding muscles) of the female pelvic floor from multi-channel intra-anal...
Tinnitus is defined as "unwanted auditory perception of internal origin, usually localized, and rarely heard by others. Tinnitus is a sensibly experienced ringing sensation in the auditory system, which occurs without the presence of an actual auditory stimulation". Nowadays many researchers focused on finding a method for treatment of tinnitus. Although they report many different treatments,...
Membrane protein and its interaction network has become a novel research direction in bioinformatics. Multiple researches on these interactions can improve our understanding of diseases and provide the basis to revolutionize therapeutic treatments. In this paper, a novel membrane protein interaction network simulator is proposed for system biology studies by intelligent multi-agents method. We consider...
The lack of knowledge about water flow and particle behavior of the grit chamber with rotational flow remains a significant difficulty for the design of these work in sandstone wastewater of hydropower station. In the paper, Eulerian-Lagrangian multi-phase model is set up. The grit chamber with rotational flow in the powerhouse, which is located in southwest of China, is as a case. Velocity field...
During the past decades, construction and demolition (C&D) waste has received increasing attention from construction practitioners and researchers around the world. A plethora of research has been published in various academic journals. These studies have investigated a wide range of topics under the umbrella of C&D waste management, of which investigation into the generation of C&D waste...
The quantity of available water resources have been recognized as limiting factors in development of most of the arid regions. Therefore, sustainable use of water resources is key problem for development of these areas. In the present paper, Hetao irrigation district, one of the largest irrigation districts in the Yellow River basin, is selected as the research area. The sustainable utilization coupled...
Numerical simulation was established and validated by the course of the rainstorm following 25 hours, which shows that the flow field can help to make the water in pre-dam effuse and prevent the Dianchi Lake water from recharging. Soluble reactive phosphorus (SRP) elimination was calculated along the whole rainfall. The result shows that the simulation is identical to the calculated and is able to...
Based on the Navier-Stokes equations for viscous, incompressible fluid and VOF method, the numerical experiment platform of oil containment by rigid floating boom in wave is established, utilizing the commercial CFD software FLUENT, and the waves are generated by defining the velocity of water particle on the inlet boundary. The volume of fluid (VOF) model is used to distinguish the three immiscible...
The outlet air velocity of air curtain is one of the key factors which have effect on its dust-isolating efficiency. In this paper, the effect of the outlet air velocity of air curtain on dust isolation had been numerically investigated by using a CFD software, Fluent. A prototype of dust-isolating air curtain have been successfully applied in a full-mechanized working face of Gequan coal mine, Hebei...
A three-dimensional heterogeneous macrocosmic mass transfer model was proposed. The effect of some parameters such as solid adsorptive capacity and diameter distribution on gas absorption was studied in detail. From the results, the adsorption capacity of particles played an important role in gas absorption. With an increase of particle capacity, the adsorption driving force increases greatly, resulting...
The recovery of Dimethylbenzene and Butylacetate from industry spent solvent oil by batch distillation was studied, and the batch distillation experiment was performed with pretreated material. The effect of separation temperature, time and reflux ratio on separation process was investigated. The experimental results showed that the concentrations of Dimethylbenzene and Butylacetate were above 95%...
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