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Applied Bionics and Biomechanics

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https://www.readbyqxmd.com/read/29440865/efficacy-of-palatal-applications-on-fracture-resistance-of-reattached-maxillary-central-incisors-an-in-vitro-study
#1
İhsan Yikilgan, Nagihan Guven, Cemile Kedıcı Alp, Emre Tokar, Ozgur Topuz, Hanife Kamak
The purpose of this study was to evaluate the effects of different palatal applications on fracture strength of the fractured anterior tooth. Sixty caries-free human maxillary incisors were used. Endodontic treatments of the teeth were performed. Then, the teeth were divided randomly into five groups ( n = 12). Crowns of all teeth in groups A-D were cut with diamond discs at a fixed distance of 3 mm from the incisal margin in a plane normal to the buccal surface. In all groups, coronal fragments were reattached to the remaining teeth by bonding with hybrid composite resin...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/29440864/validation-of-material-algorithms-for-femur-remodelling-using-medical-image-data
#2
Shitong Luo, Xingquan Shen, Xin Bai, Jing Bai, Jianning Han, Yu Shang
The aim of this study is the utilization of human medical CT images to quantitatively evaluate two sorts of "error-driven" material algorithms, that is, the isotropic and orthotropic algorithms, for bone remodelling. The bone remodelling simulations were implemented by a combination of the finite element (FE) method and the material algorithms, in which the bone material properties and element axes are determined by both loading amplitudes and daily cycles with different weight factor. The simulation results showed that both algorithms produced realistic distribution in bone amount, when compared with the standard from CT data...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/29410600/additive-manufacturing-techniques-for-the-reconstruction-of-3d-fetal-faces
#3
Domenico Speranza, Daniela Citro, Francesco Padula, Barbara Motyl, Federica Marcolin, Michele Calì, Massimo Martorelli
This paper deals with additive manufacturing techniques for the creation of 3D fetal face models starting from routine 3D ultrasound data. In particular, two distinct themes are addressed. First, a method for processing and building 3D models based on the use of medical image processing techniques is proposed. Second, the preliminary results of a questionnaire distributed to future parents consider the use of these reconstructions both from an emotional and an affective point of view. In particular, the study focuses on the enhancement of the perception of maternity or paternity and the improvement in the relationship between parents and physicians in case of fetal malformations, in particular facial or cleft lip diseases...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/29386882/cell-colonization-ability-of-a-commercialized-large-porous-alveolar-scaffold
#4
S Lemonnier, T Bouderlique, S Naili, H Rouard, J Courty, N Chevallier, P Albanese, T Lemaire
The use of filling biomaterials or tissue-engineered large bone implant-coupling biocompatible materials and human bone marrow mesenchymal stromal cells seems to be a promising approach to treat critical-sized bone defects. However, the cellular seeding onto and into large porous scaffolds still remains challenging since this process highly depends on the porous microstructure. Indeed, the cells may mainly colonize the periphery of the scaffold, leaving its volume almost free of cells. In this study, we carry out an in vitro study to analyze the ability of a commercialized scaffold to be in vivo colonized by cells...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/29375244/elastic-modulus-of-osteoporotic-mouse-femur-based-on-femoral-head-compression-test
#5
Chang-Soo Chon, Hui-Suk Yun, Han Sung Kim, Cheolwoong Ko
A biomechanical test is a good evaluation method that describes the structural, functional, and pathological differences in the bones, such as osteoporosis and fracture. The tensile test, compression test, and bending test are generally performed to evaluate the elastic modulus of the bone using mice. In particular, the femoral head compression test is mainly used for verifying the osteoporosis change of the femoral neck. This study conducted bone mineral density analysis using in vivo microcomputed tomography (micro-CT) to observe changes in osteoporosis over time...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/29358893/kinect-v2-performance-assessment-in-daily-life-gestures-cohort-study-on-healthy-subjects-for-a-reference-database-for-automated-instrumental-evaluations-on-neurological-patients
#6
Alessandro Scano, Andrea Chiavenna, Matteo Malosio, Lorenzo Molinari Tosatti
Background: The increase of sanitary costs related to poststroke rehabilitation requires new sustainable and cost-effective strategies for promoting autonomous and dehospitalized motor training. In the Riprendo@Home and Future Home for Future Communities research projects, the promising approach of introducing low-cost technologies that promote home rehabilitation is exploited. In order to provide reliable evaluation of patients, a reference database of healthy people's performances is required and should consider variability related to healthy people performances...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/29311756/a-survey-of-bioinspired-jumping-robot-takeoff-air-posture-adjustment-and-landing-buffer
#7
REVIEW
ZiQiang Zhang, Jing Zhao, HanLong Chen, DianSheng Chen
A bioinspired jumping robot has a strong ability to overcome obstacles. It can be applied to the occasion with complex and changeable environment, such as detection of planet surface, postdisaster relief, and military reconnaissance. So the bioinspired jumping robot has broad application prospect. The jumping process of the robot can be divided into three stages: takeoff, air posture adjustment, and landing buffer. The motivation of this review is to investigate the research results of the most published bioinspired jumping robots for these three stages...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/29259395/cervical-spine-mechanism-for-reproduction-of-the-biomechanical-behaviours-of-the-human-neck-during-rotation-traction-manipulation
#8
Yuancan Huang, Shuai Li, Minshan Feng, Liguo Zhu
Rotation-traction (RT) manipulation is a commonly used physical therapy procedure in TCM (traditional Chinese medicine) for cervical spondylosis. This procedure temporarily separates the C3 and C4 cervical vertebrae from each other when a physician applies a jerky action while the neck is voluntarily turned by the patient to a specific position as instructed by the physician, where the cervical vertebrae are twisted and locked. However, a high rate of cervical injury occurs due to inexperienced physician interns who lack sufficient training...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/29238158/full-step-cycle-kinematic-and-kinetic-comparison-of-barefoot-walking-and-a-traditional-shoe-walking-in-healthy-youth-insights-for-barefoot-technology
#9
Yi Xu, Qinghua Hou, Chuhuai Wang, Andrew J Sellers, Travis Simpson, Bradford C Bennett, Shawn D Russell
Objective: Barefoot technology shoes are becoming increasingly popular, yet modifications are still needed. The present study aims to gain valuable insights by comparing barefoot walking to neutral shoe walking in a healthy youth population. Methods: 28 healthy university students (22 females and 6 males) were recruited to walk on a 10-meter walkway both barefoot and in neutral running shoes at their comfortable walking speed. Full step cycle kinematic and kinetic data were collected using an 8-camera motion capture system...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/29234219/concept-and-design-of-a-3d-printed-support-to-assist-hand-scanning-for-the-realization-of-customized-orthosis
#10
Gabriele Baronio, Paola Volonghi, Alberto Signoroni
In the rehabilitation field, the use of additive manufacturing techniques to realize customized orthoses is increasingly widespread. Obtaining a 3D model for the 3D printing phase can be done following different methodologies. We consider the creation of personalized upper limb orthoses, also including fingers, starting from the acquisition of the hand geometry through accurate 3D scanning. However, hand scanning procedure presents differences between healthy subjects and patients affected by pathologies that compromise upper limb functionality...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/29230089/study-on-effects-of-titanium-surface-microporous-coatings-containing-zinc-on-osteoblast-adhesion-and-its-antibacterial-activity
#11
Quan-Ming Zhao, Guang-Zhong Li, Hao-Ming Zhu, Li Cheng
Metal surface structure/biomedical function integration is the current research focus. In previous studies, we have successfully prepared the microporous coatings containing zinc on the pure titanium surface by MAO. In the study, osteoblasts were seeded on the surface of the microporous coatings containing zinc and the adhesion of osteoblasts were evaluated, and the antibacterial activity of the microporous coatings containing zinc is observed through in vitro bacterial experiments. The result indicates that the adhesion ability of osteoblasts on the surface of microporous coatings containing zinc was very good, and the coatings could obviously inhibit the growth of Staphylococcus aureus and had good antibacterial activity...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/29209136/interaction-between-flow-diverter-and-parent-artery-of-intracranial-aneurysm-a-computational-study
#12
Wenyu Fu, Qixiao Xia
To evaluate the influence of deployment strategy on the mechanical interaction between braided stent and parent artery of intracranial aneurysm (the elasticity of the arterial wall is considered), finite-element analyses are carried out by referring to computational models of flow-diverter device and arterial wall. Two implantation strategies are used to virtually implant the braided stent into the ideal intracranial aneurysm model. One is the noncompacted implantation method, and the other is the implantation method of using push-pull technique...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/29200815/design-and-test-research-on-cutting-blade-of-corn-harvester-based-on-bionic-principle
#13
Kunpeng Tian, Xianwang Li, Bin Zhang, Qiaomin Chen, Cheng Shen, Jicheng Huang
Existing corn harvester cutting blades have problems associated with large cutting resistance, high energy consumption, and poor cut quality. Using bionics principles, a bionic blade was designed by extracting the cutting tooth profile curve of the B. horsfieldi palate. Using a double-blade cutting device testing system, a single stalk cutting performance contrast test for corn stalks obtained at harvest time was carried out. Results show that bionic blades have superior performance, demonstrated by strong cutting ability and good cut quality...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/29123373/the-structure-and-flexural-properties-of-typha-leaves
#14
Jingjing Liu, Zhihui Zhang, Zhenglei Yu, Yunhong Liang, Xiujuan Li, Luquan Ren
The Typha leaf has a structure of lightweight cantilever beam, exhibiting excellent mechanical properties with low density. Especially, the leaf blade evolved high strength and low density with high porosity. In this paper, the structure of Typha leaf was characterized by microcomputed tomography (Micro-CT) and scanning electron microscopy (SEM), and the relationship with flexural properties was analyzed. The three-point bending test was performed on leaves to examine flexural properties, which indicated that the flexural properties vary from the base to the apex in gradient...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/29118571/crashworthiness-design-for-bionic-bumper-structures-inspired-by-cattail-and-bamboo
#15
Tao Xu, Nian Liu, Zhenglei Yu, Tianshuang Xu, Meng Zou
Many materials in nature exhibit excellent mechanical properties. In this study, we evaluated the bionic bumper structure models by using nonlinear finite element (FE) simulations for their crashworthiness under full-size impact loading. The structure contained the structural characteristics of cattail and bamboo. The results indicated that the bionic design enhances the specific energy absorption (SEA) of the bumper. The numerical results showed that the bionic cross-beam and bionic box of the bionic bumper have a significant effect on the crashworthiness of the structure...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/29104425/analysis-of-drag-reduction-methods-and-mechanisms-of-turbulent
#16
REVIEW
Gu Yunqing, Liu Tao, Mu Jiegang, Shi Zhengzan, Zhou Peijian
Turbulent flow is a difficult issue in fluid dynamics, the rules of which have not been totally revealed up to now. Fluid in turbulent state will result in a greater frictional force, which must consume great energy. Therefore, it is not only an important influence in saving energy and improving energy utilization rate but also an extensive application prospect in many fields, such as ship domain and aerospace. Firstly, bionic drag reduction technology is reviewed and is a hot research issue now, the drag reduction mechanism of body surface structure is analyzed, such as sharks, earthworms, and dolphins...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/29104424/new-design-of-a-soft-robotics-wearable-elbow-exoskeleton-based-on-shape-memory-alloy-wire-actuators
#17
Dorin Copaci, Enrique Cano, Luis Moreno, Dolores Blanco
The elbow joint is a complex articulation composed of the humeroulnar and humeroradial joints (for flexion-extension movement) and the proximal radioulnar articulation (for pronation-supination movement). During the flexion-extension movement of the elbow joint, the rotation center changes and this articulation cannot be truly represented as a simple hinge joint. The main goal of this project is to design and assemble a medical rehabilitation exoskeleton for the elbow with one degree of freedom for flexion-extension, using the rotation center for proper patient elbow joint articulation...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/29097902/using-a-bayesian-network-to-predict-l5-s1-spinal-compression-force-from-posture-hand-load-anthropometry-and-disc-injury-status
#18
Richard E Hughes
Stochastic biomechanical modeling has become a useful tool most commonly implemented using Monte Carlo simulation, advanced mean value theorem, or Markov chain modeling. Bayesian networks are a novel method for probabilistic modeling in artificial intelligence, risk modeling, and machine learning. The purpose of this study was to evaluate the suitability of Bayesian networks for biomechanical modeling using a static biomechanical model of spinal forces during lifting. A 20-node Bayesian network model was used to implement a well-established static two-dimensional biomechanical model for predicting L5/S1 compression and shear forces...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28951659/macrodamage-accumulation-model-for-a-human-femur
#19
Farah Hamandi, Tarun Goswami
The objective of this study was to more fully understand the mechanical behavior of bone tissue that is important to find an alternative material to be used as an implant and to develop an accurate model to predict the fracture of the bone. Predicting and preventing bone failure is an important area in orthopaedics. In this paper, the macrodamage accumulation models in the bone tissue have been investigated. Phenomenological models for bone damage have been discussed in detail. In addition, 3D finite element model of the femur prepared from imaging data with both cortical and trabecular structures is delineated using MIMICS and ANSYS® and simulated as a composite structure...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28894351/prediction-of-epileptic-seizure-by-analysing-time-series-eeg-signal-using-k-nn-classifier
#20
Md Kamrul Hasan, Md Asif Ahamed, Mohiuddin Ahmad, M A Rashid
Electroencephalographic signal is a representative signal that contains information about brain activity, which is used for the detection of epilepsy since epileptic seizures are caused by a disturbance in the electrophysiological activity of the brain. The prediction of epileptic seizure usually requires a detailed and experienced analysis of EEG. In this paper, we have introduced a statistical analysis of EEG signal that is capable of recognizing epileptic seizure with a high degree of accuracy and helps to provide automatic detection of epileptic seizure for different ages of epilepsy...
2017: Applied Bionics and Biomechanics
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