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  • Open Access


    Comparison of Biomechanical Characteristics during the Second Landing Phase in Female Latin Dancers: Evaluation of the Bounce and Side Chasse Step

    Fengfeng Li1, Huiyu Zhou1,2, Datao Xu1, Julien S. Baker3, Yaodong Gu1,*

    Molecular & Cellular Biomechanics, Vol.19, No.3, pp. 115-129, 2022, DOI:10.32604/mcb.2022.022658

    Abstract Research on dance lower extremity joint motion has been limited. Thus, the purpose of this study was to investigate the lower limb biomechanics differences between the side chasse step (SCS) and the bounce step (BS) of the second landing phase in Jive. Thirteen female recreational Latin dancers (Age: 22 ± 2.5 years; Height: 1.65 ± 0.05 m; Weight: 50 ± 4.5 kg; Dance experience: 4 ± 2 years) were involved in the experiment. The same music was used throughout the data collection period. We intended to determine whether these two steps generate different kinematic and kinetic data. The ankle, hip, and knee joint angle, moment, velocity, and… More >

  • Open Access


    Effects of Forefoot Shoe on Knee and Ankle Loading during Running in Male Recreational Runners

    Jingying Lu1, Datao Xu1, Wenjing Quan1,2, Julien S. Baker3, Yaodong Gu1,*

    Molecular & Cellular Biomechanics, Vol.19, No.2, pp. 61-75, 2022, DOI:10.32604/mcb.2022.019978

    Abstract Objectives: Although overuse running injury risks for the ankle and knee are high, the effect of different shoe designs on Achilles tendon force (ATF) and Patellofemoral joint contact force (PTF) loading rates are unclear. Therefore, the primary objective of this study was to compare the ATF at the ankle and the PTF and Patellofemoral joint stress force (PP) at the knee using different running shoe designs (forefoot shoes vs. normal shoes). Methods: Fourteen healthy recreational male runners were recruited to run over a force plate under two shoe conditions (forefoot shoes vs. normal shoes). Sagittal plane ankle and knee kinematics… More >

  • Open Access


    Free Vibration Analysis of RC Box-Girder Bridges Using FEM

    Preeti Agarwal*, Priyaranjan Pal, Pradeep Kumar Mehta

    Sound & Vibration, Vol.56, No.2, pp. 105-125, 2022, DOI:10.32604/sv.2022.014874

    Abstract The free vibration analysis of simply supported box-girder bridges is carried out using the finite element method. The fundamental frequency is determined in straight, skew, curved and skew-curved box-girder bridges. It is important to analyse the combined effect of skewness and curvature because skew-curved box-girder bridge behaviour cannot be predicted by simply adding the individual effects of skewness and curvature. At first, an existing model is considered to validate the present approach. A convergence study is carried out to decide the mesh size in the finite element method. An exhaustive parametric study is conducted to determine the fundamental frequency of… More >

  • Open Access


    Flow and Melting Thermal Transfer Enhancement Analysis of Alumina, Titanium Oxide-Based Maxwell Nanofluid Flow Inside Double Rotating Disks with Finite-Element Simulation

    Liangliang Chen1, Madeeha Tahir2,*, Sumeira Yasmin3, Taseer Muhammad4, Muhammad Imran5,*, Fenghua Liu1

    CMES-Computer Modeling in Engineering & Sciences, Vol.130, No.3, pp. 1771-1788, 2022, DOI:10.32604/cmes.2022.017539

    Abstract The energy produced by the melting stretching disks surface has a wide range of commercial applications, including semi-conductor material preparation, magma solidification, permafrost melting, and frozen land refreezing, among others. In view of this, in the current communication we analyzed magnetohydrodynamic flow of Maxwell nanofluid between two parallel rotating disks. Nanofluids are important due to their astonishing properties in heat conduction flows and in the enhancement of electronic and manufacturing devices. Furthermore, the distinct tiny-sized particles and in the Maxwell water-based fluid for enhancing the heat transfer rate are analyzed. The heat equation is developed in the occurrence of thermal… More >

  • Open Access


    Numerical Simulation of Bone Plate with Fatigue Crack and Investigation of Attraction Hole for Retarding Crack Growth

    Zhonghang Zhao, Aimin Ji*, Changsheng Chen

    Molecular & Cellular Biomechanics, Vol.18, No.4, pp. 173-185, 2021, DOI:10.32604/mcb.2021.016238

    Abstract Premature fracture of the bone plate caused by fatigue crack is the main failure mode in treating femoral shaft fracture. In order to improve the durability of the plate, this study proposed a crack attraction hole (CAH) to retard the crack propagation based on the fracture mechanics. In this paper, a numerical model of the femoral fracture internal fixation system was constructed, in which the femur was developed using a validated simplified model. First, the fatigue crack initiation location was defined at the stress concentration through static analysis. Next, with the joint simulation method of Franc3D and ABAQUS, the fatigue… More >

  • Open Access


    Lyapunov-Redesign and Sliding Mode Controller for Microprocessor Based Transfemoral Prosthesis

    Ali Murtaza1, Muhammad Usman Qadir1, Muhammad Awais Khan1, Izhar ul Haq1,*, Kamran Shah1, Nizar Akhtar2

    Intelligent Automation & Soft Computing, Vol.31, No.3, pp. 1887-1899, 2022, DOI:10.32604/iasc.2022.020006

    Abstract Transfemoral prostheses have evolved from mechanical devices to microprocessor-based, electronically controlled knee joints, allowing amputees to regain control of their limbs. For improved amputee experience at varying ambulation rates, these devices provide controlled damping throughout the swing and stance phases of the gait cycle. Commercially available microprocessor-based prosthetic knee (MPK) joints use linear controllers, heuristic-based methods, and finite state machine based algorithms to track the refence gait cycle. However, since the amputee experiences a variety of non-linearities during ambulation, such as uneven terrains, walking backwards and climbing stairs, therefore, traditional controllers produces error, abnormal movements, unstable control system and require… More >

  • Open Access


    Two approaches for calculating female fetal DNA fraction in noninvasive prenatal testing based on size analysis of maternal DNA fragments

    JIANBO LU1,2,#,*, XIAOHAN SUN3,#, XU MA1,2,*

    BIOCELL, Vol.46, No.1, pp. 185-193, 2022, DOI:10.32604/biocell.2021.015301

    Abstract The concentration of cell-free fetal DNA fragments should be detected before noninvasive prenatal testing (NIPT). The fetal DNA molecules have significant clinical potential in determining the overall performance of NIPT and clinical interpretation. It is important to measure fetal DNA fraction before NIPT. However, there is still little research on how to calculate the concentration of female fetuses. Two estimation approaches were proposed to calculate fetal DNA fraction, including the fragments size-based approach, aneuploid-based approach, which are all approaches based on chromosome segments. Based on high-throughput sequencing data, two approaches to calculate the DNA fraction of male fetuses were tested… More >

  • Open Access


    Effectiveness of Mind-Body Exercise on Burnout and Stress in Female Undergraduate Students

    Xiaohong Zhu1, Tongyang Chu2, Qian Yu3, Jinming Li3, Xingyu Zhang3, Yanjie Zhang3,4,*, Liye Zou3

    International Journal of Mental Health Promotion, Vol.23, No.3, pp. 353-360, 2021, DOI:10.32604/IJMHP.2021.016339

    Abstract This study was to investigate the effects of mind-body exercise on burnout and perceived stress among female undergraduate students. A sample of 146 female undergraduate students took part in this study. They were assigned to mind-body exercise group (n = 91) and control group (n = 55). Mind-body exercise group received three 90-min sessions of Baduanjin exercise per week lasting for 12-weeks. There was no intervention in the control group. The Maslach Burnout Inventory-Student Survey was used to assess burnout level, and the 10-item perceived stress scale was used to assess stress level. Significant decreases in emotional exhaustion (p <… More >

  • Open Access


    Awareness of Human Papilloma Virus and Its Association with Cervical Cancer among Female University Students: A Study from United Arab Emirates

    Madhumitha Kedhari Sundaram1, Abdulmajeed G. Almutary2, Shafiul Haque3, Faheem SM1, Arif Hussain1,*

    Oncologie, Vol.23, No.2, pp. 269-277, 2021, DOI:10.32604/Oncologie.2021.016002

    Abstract Cervical cancer is the neoplasm of the uterine cervix in women, which is highly preventable. With the advent of vaccination against HPV infection, a gradual decline in the incidence of cervical cancer cases has been observed in developing countries. The developing nations bear the brunt of cervical cancer incidence due to low acceptance of vaccination. This survey-based study was designed to assess the awareness and opinions of female university students regarding human papilloma virus, vaccination and cervical cancer. A survey questionnaire was distributed among female expatriate students (18 to 26 years of age) of a private university. The survey sought… More >

  • Open Access


    Characterization and Prediction of Nonlinear Stress-Strain Relation of Geostructures for Seismic Monitoring

    Abdoullah Namdar1,2,3,*

    Structural Durability & Health Monitoring, Vol.15, No.2, pp. 167-182, 2021, DOI:10.32604/sdhm.2021.011127

    Abstract The nonlinearity of the strain energy at an interval period of applying seismic load on the geostructures makes it difficult for a seismic designer to makes appropriate engineering judgments timely. The nonlinear stress and strain analysis of an embankment is needed to evaluate by using a combination of suitable methods. In this study, a large-scale geostructure was seismically simulated and analyzed using the nonlinear finite element method (NFEM), and linear regression method which is a soft computing technique (SC) was applied for evaluating the results of NFEM, and it supports engineering judgment because the design of the geostructures is usually… More >

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