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  • Open Access

    ARTICLE

    Research on Flight First Service Model and Algorithms for the Gate Assignment Problem

    Jiarui Zhang1, Gang Wang2,*, Siyuan Tong1

    CMC-Computers, Materials & Continua, Vol.61, No.3, pp. 1091-1104, 2019, DOI:10.32604/cmc.2019.05907

    Abstract Aiming at the problem of gate allocation of transit flights, a flight first service model is established. Under the constraints of maximizing the utilization rate of gates and minimizing the transit time, the idea of “first flight serving first” is used to allocate the first time, and then the hybrid algorithm of artificial fish swarm and simulated annealing is used to find the optimal solution. That means the fish swarm algorithm with the swallowing behavior is employed to find the optimal solution quickly, and the simulated annealing algorithm is used to obtain a global optimal… More >

  • Open Access

    ABSTRACT

    Rationally Designed Synthetic Protein Hydrogels with Predictable and Controllable Mechanical Properties

    Ying Li1, Bin Xue2, Wenxu Sun2, Junhua Wu2, Wenting Yu2, Meng Qin2, Wei Wang2, Yi Cao2,*

    Molecular & Cellular Biomechanics, Vol.16, Suppl.2, pp. 147-147, 2019, DOI:10.32604/mcb.2019.07027

    Abstract A key challenge in biomaterials research is to produce synthetic hydrogels that can replicate the diverse mechanical properties of the naturally occurring tissues for various biomedical applications, including tissue engineering, stem cell and cancer research, cell therapy, and immunomodulation. However, currently, the methods that can be used to control the mechanical properties of hydrogels are very limited and are mainly focused only on the elasticity of hydrogels. In this work, combining single molecule force spectroscopy, protein engineering and theoretical modeling, we show that synthetic protein hydrogels with predictable mechanical properties can be rationally designed using… More >

  • Open Access

    ABSTRACT

    Endothelial Tight Junction Protein ZO-1 Response to Multiple-Mechanical Stimulations After Stent Implamtation

    Yang Wang1, Shuang Ge1, Junyang Huang1, Ruolin Du1, Tieying Yin1, Guixue Wang1,*, Yazhou Wang1,*

    Molecular & Cellular Biomechanics, Vol.16, Suppl.2, pp. 140-141, 2019, DOI:10.32604/mcb.2019.07300

    Abstract Zonula occludens-1 (ZO-1) is a peripheral membrane protein belongs to the family of zona occludens proteins and plays an important role as a scaffold protein which cross-links and anchors tight junction (TJ) strand proteins, within the lipid bilayer, to the actin cytoskeleton[1-2]. Stent implantation is the most effective method in the treatment of cardiovascular disease which always destroy junctions of endothelial cells, the functions of the tight junction were also affected. However, the role of ZO-1 before and after stent implantation has not been fully understood. In this study, the expression of ZO-1 were analyzed by… More >

  • Open Access

    ABSTRACT

    Expression of Endothelial Tight Junction Protein Occludin under Mechanical Factors after Stent Implantation

    Junyang Huang1, Shuang Ge1, Yang Wang1, Ruolin Du1, Yazhou Wang1, Tieying Yin1, Guixue Wang1,*

    Molecular & Cellular Biomechanics, Vol.16, Suppl.2, pp. 138-139, 2019, DOI:10.32604/mcb.2019.07305

    Abstract Tight junctions are the most apical intercellular junctions of the lateral membrane in endothelial cells, regulating the paracellular material and energy exchange and maintain plasma membrane polarity. Occludin protein is one of the important proteins involved in endothelial tight junctions, and also closely related to the occurrence of atherosclerosis. Therefore, the study of occludin is valuable [1]. With the implantation of coronary stents, the integrity of the vascular endothelium is damaged and the local mechanical environment at the stent segment was changed [2]. The present study tried to explore the impact of mechanical stimulation after stent… More >

  • Open Access

    ABSTRACT

    Immediate Negative Effects of Marathon Running on Overweight People’s Knee Articular Cartilage – A Quantitative Magnetic Resonance Relaxation Time Analysis

    Zhongzheng Wang1,2, Fei Tian3, Shaobai Wang3, Songtao Ai2, Tsung-Yuan Tsai1,*

    Molecular & Cellular Biomechanics, Vol.16, Suppl.2, pp. 116-117, 2019, DOI:10.32604/mcb.2019.07690

    Abstract This article has no abstract. More >

  • Open Access

    ABSTRACT

    Computational Biomechanical Right Ventricle Modeling with Contracting Bands to Improve Ventricle Cardiac Function for Patient with Repaired Tetralogy of Fallot

    Han Yu1, Tal Geva2, Rahul H. Rathod2, Alexander Tang2, Chun Yang3, Zheyang Wu3, Kristen L. Billiar4, Xueying Huang5, Dalin Tang1,*,3

    Molecular & Cellular Biomechanics, Vol.16, Suppl.2, pp. 56-57, 2019, DOI:10.32604/mcb.2019.07257

    Abstract Computational biomechanical models are widely used in cardiovascular research for better understanding of mechanisms governing disease development, quantitative diagnostic strategies and improved surgical designs with better outcome. Patients with repaired tetralogy of Fallot (TOF) account for the majority of cases with late onset right ventricle (RV) failure. The current surgical approach, which includes pulmonary valve replacement/insertion (PVR), has yielded mixed results. An innovative PVR surgical approach was proposed using active contracting bands to help ventricle to contract and improve RV function measured by ejection fraction [1]. Muscle active contraction caused by sarcomere shortening leads to… More >

  • Open Access

    ABSTRACT

    Mass Transport of LDL in Stenotic Right Coronary Arteries

    Biyue Liu1,*, Dalin Tang2

    Molecular & Cellular Biomechanics, Vol.16, Suppl.2, pp. 25-26, 2019, DOI:10.32604/mcb.2019.06825

    Abstract The blood flow and mass transport pattern of low-density lipoprotein (LDL) in a right coronary artery with two stenoses are studied. Computations were carried out under physiological conditions. Our results show a strong correlation between wall shear stress (WSS) and distribution patterns of LDL. More >

  • Open Access

    ABSTRACT

    Ventricle Stress/Strain Comparison Between Models Using Different Zero-Load Diastole and Systole Morphologies and Models Using Only One Zero-Load Morphologies

    Han Yu1, Pedro J. del Nido2, Tal Geva3, Chun Yang4, Zheyang Wu4, Rahul H. Rathod3, Xueying Huang5, Kristen L. Billiar6, Dalin Tang1,4,*

    Molecular & Cellular Biomechanics, Vol.16, Suppl.1, pp. 73-74, 2019, DOI:10.32604/mcb.2019.05837

    Abstract Ventricle mechanical stress and strain calculations play an important role in cardiovascular investigations. Patients with repaired tetralogy of Fallot (TOF) account for the majority of cases with late onset right ventricular (RV) failure. The current surgical approach, including pulmonary valve replacement(PVR), has yielded mixed results with some patients recover RV function after pulmonary valve insertion with or without concomitant RV remodeling surgery but some do not[Therrien, Siu and McLaughlin (2000);]. Cardiac magnetic resonance (CMR) data were collected from 6 healthy volunteers and 12 Tetralogy of Fallot (TOF) patients before PVR with consent obtained. 12 patients… More >

  • Open Access

    ABSTRACT

    Study on the Influence of Right Atrial Pressure on the Numerical Calculation of Fractional Flow Reserve

    Yue Feng1, Youjun Liu1,*

    Molecular & Cellular Biomechanics, Vol.16, Suppl.1, pp. 31-32, 2019, DOI:10.32604/mcb.2019.05713

    Abstract Coronary atherosclerotic heart disease, or coronary heart disease for short, is a heart disease caused by atherosclerotic lesions of coronary arteries, resulting in stenosis, spasm and live obstruction, leading to myocardial ischemia, hypoxia and even necrosis, and is the most common type of organ lesions caused by atherosclerosis. Coronary computed tomograph angiography (CCTA) has been the most effective method for examining coronary heart disease, but this method can only be judged from the morphology. It has been shown that when the coronary stenosis rate is as high as 70%, only 32% of blood vessels can… More >

  • Open Access

    ABSTRACT

    Reliability and Variability of Hepatic Venous Pressure Gradient as a Surrogate of Portal Pressure Gradient: Insights from a Computational Model-Based Study

    Fuyou Liang1,*, Tianqi Wang1

    Molecular & Cellular Biomechanics, Vol.16, Suppl.1, pp. 25-26, 2019, DOI:10.32604/mcb.2019.05710

    Abstract Hepatic venous pressure gradient (HVPG) measurement has been increasingly accepted as a useful means for indirectly measuring portal venous pressure in patients with portal hypertension (PHT) caused by chronic liver diseases. Despite the existence of numerous studies addressing the clinical utility of HVPG measurement, it is as yet unclear how the accuracy of measured HVPG as a surrogate of portal pressure gradient (PPG) is influenced by the pathological status of the hepatic circulation that not only changes with the progression of liver disease but also differs considerably among patients. In addition, it remains unclear whether… More >

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