Abstract：
:In this paper, we apply the micropipette to reduce the surface area of the rabbit aorta, and the relationship between the fractional area change of the aortic surface and the negative pressure in the pipette is studied. The experimental results for seven rabbit thoracic aortas show that the relationship can be expressed as P = K x (ec alpha- 1), where P is the negative pressure applied to the aorta surface through the micropipette, alpha is the fractional area change of the aortic surface, K and C are constants. For the rabbit thoracic aorta, the value of K is between 5 and 17 kPa, with a mean of 8.66 kPa the value of C is between 8 and 19, with a mean of 12.11.
journal_name
J Biomechjournal_title
Journal of biomechanicsauthors
Yu Q,Wang X,Li Gdoi
10.1016/0021-9290(96)00003-6subject
Has Abstractpub_date
1996-08-01 00:00:00pages
1033-7issue
8eissn
0021-9290issn
1873-2380pii
0021929096000036journal_volume
29pub_type
杂志文章abstract：:About one-third of older multiparous women are prone to stress urinary incontinence (SUI): unwanted urine loss during activities which suddenly raise intra-abdominal pressure. In this paper we describe and test a method for visualizing and analyzing the function of the urinary continence control system (CCS) under str...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/s0021-9290(97)81291-2
更新日期：1997-01-01 00:00:00
abstract：:Flow stagnation and residence time (RT) are important features of diseased arterial flows that influence biochemical transport processes and thrombosis. RT calculation methods are classified into Eulerian and Lagrangian approaches where several measures have been proposed to quantify RT. Each of these methods has a di...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2019.03.028
更新日期：2019-05-09 00:00:00
abstract：:A squeeze-film lubrication model of the human ankle joint in standing that takes into account the fluid transport across the articular surface is presented. Articular cartilage is a biphasic mixture of the ideal interstitial fluid and an elastic permeable isotropic homogeneous intrinsically incompressible matrix. The ...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/s0021-9290(00)00109-3
更新日期：2000-11-01 00:00:00
abstract：OBJECTIVE:To assess dynamic arch support in diabetic patients at risk for Charcot neuroarthopathy whose arch index has not yet shown overt signs of foot collapse. METHODS:Two indirect measures of toe flexor activation (ratios: peak hallux pressure to peak metatarsal pressure - Ph/Pm; peak posterior hallux shear to pea...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2016.12.024
更新日期：2017-02-08 00:00:00
abstract：:The present work displayed the first quantitative data of forces acting on tendons and pulleys during specific sport-climbing grip techniques. A three-dimensional static biomechanical model was used to estimate finger muscle tendon and pulley forces during the "slope" and the "crimp" grip. In the slope grip the finger...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2005.08.027
更新日期：2006-01-01 00:00:00
abstract：:Patello-femoral disorders are often caused by changes of patello-femoral and/or tibio-femoral kinematics. However, until now there has been no quantitative in vivo technique, that is able to obtain 3D kinematics and contact areas of all knee compartments simultaneously on a non-invasive basis. The aim of this study wa...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2003.09.034
更新日期：2004-06-01 00:00:00
abstract：:While there are a growing number of increasingly complex methodologies available to model geometry and material properties of bones, these models still cannot accurately describe physical behaviour of the skeletal system unless the boundary conditions, especially muscular loading, are correct. Available in vivo measur...
journal_title：Journal of biomechanics
pub_type： 杂志文章,评审
doi：10.1016/j.jbiomech.2009.09.049
更新日期：2010-02-10 00:00:00
abstract：:Local dynamic stability has been assessed by the short-term local divergence exponent (λS), which quantifies the average rate of logarithmic divergence of infinitesimally close trajectories in state space. Both increased and decreased local dynamic stability at faster walking speeds have been reported. This might pert...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2014.09.020
更新日期：2014-11-28 00:00:00
abstract：:Lower propulsive joint powers, particularly at the ankle, are often observed in older compared to young adults. Interventions to increase joint powers often require labs with motion capture and force treadmill technology. Translating these interventions out of the lab requires identifying portable measures that track ...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2020.109821
更新日期：2020-06-09 00:00:00
abstract：:Electromagnetic tracking devices are used in many biomechanics applications. Previous studies have shown that metal located within the working field of direct current electromagnetic tracking devices produces significant errors. However, the effect of sampling rate on the errors produced in a metallic environment has ...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/s0021-9290(02)00322-6
更新日期：2003-01-01 00:00:00
abstract：:Local intracellular variations of cell mechanical properties, which are essential for vital cellular functions, have not been well characterized and are poorly understood. Here, we used results from our previous biomechanical imaging study to obtain relationships between intracellular shear modulus and prestress. We f...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2014.08.004
更新日期：2014-09-22 00:00:00
abstract：:Locations, magnitudes, and directions of pelvic muscle and acetabular contact forces are important to model the effects of abnormal conditions (e.g., deformity, surgery) of the hip accurately. Such data have not been reported previously. We computed the three-dimensional locations of all pelvic muscle and acetabular c...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/s0021-9290(97)00041-9
更新日期：1997-09-01 00:00:00
abstract：:Arteries in vivo are subjected to large longitudinal stretch, which changes significantly due to vascular disease and surgery. However, little is known about the effect of longitudinal stretch on arterial endothelium. The aim of this study was to determine the morphologic adaptation of arterial endothelial cells (ECs)...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2008.08.016
更新日期：2008-11-14 00:00:00
abstract：:The amount of microdamage in bone tissue impairs mechanical performance and may act as a stimulus for bone remodeling. Here we determine how loading mode (tension vs. compression) and microstructure (trabecular microarchitecture, local trabecular thickness, and presence of resorption cavities) influence the number and...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2014.10.011
更新日期：2014-11-28 00:00:00
abstract：:Acute injury severity, altered joint kinematics, and joint incongruity are three important mechanical factors linked to post-traumatic osteoarthritis (PTOA). Finite element analysis (FEA) was previously used to assess the influence of increased contact stress due to joint incongruity on PTOA development. While promisi...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2015.05.030
更新日期：2015-09-18 00:00:00
abstract：:In quadrupeds, there have been limited comparisons of gait timing events detection (e.g., paw contact, PC and paw-off, PO) determined from kinematics and forceplates. The goal of this study was to investigate the effect of different slopes (0, -27, +27°), recovery times after ankle extensor nerve injury and repair (2,...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2012.03.013
更新日期：2012-05-11 00:00:00
abstract：:Three-dimensional dynamic suspension is becoming an effective cell culture method for a wide range of bioprocesses, with an increasing number of bioreactors proposed for this purpose. The complex hydrodynamics establishing within these devices affects bioprocess outcomes and efficiency, and usually expensive in vitro ...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2019.07.021
更新日期：2019-09-20 00:00:00
abstract：:Formation of restrictive adhesions is one of the main obstacles in rehabilitation following hand surgery. Most experimental work, however, involves only a macroscopic and/or histologic evaluation of the amount of adhesions, and their functional characteristics are poorly described. The aim of this study was to develop...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/0021-9290(91)90171-i
更新日期：1991-01-01 00:00:00
abstract：:The unsteady flow through a model of the human nasal cavity is analyzed at a Strouhal number of Sr=0.791 for the complete respiration cycle. A comparison of the essential flow structures in the model geometry and a real nasal cavity shows the relevance of the model data. The analysis of the steady and unsteady solutio...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2009.12.008
更新日期：2010-04-19 00:00:00
abstract：:Polarization sensitive optical coherence tomography (PSOCT) is an interferometric technique sensitive to birefringence. Since mechanical loading alters the orientation of birefringent collagen fibrils, we asked if PSOCT can be used to measure local mechanical properties of sclera. Infrared (1300 nm) PSOCT was performe...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2018.03.017
更新日期：2018-04-27 00:00:00
abstract：:The aim of the present study was to compare passive and active muscle stiffness and tendon stiffness between long distance runners and untrained men. Twenty long distance runners and 24 untrained men participated in this study. Active muscle stiffness in the medial gastrocnemius muscle was calculated according to chan...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2015.04.012
更新日期：2015-07-16 00:00:00
abstract：:Spinal intervertebral joints are complex structures allowing motion in multiple directions, and many experimental studies have reported moment-rotation response. However, experimental methods, reporting of results, and levels of the spine tested vary widely, and a comprehensive assessment of moment-rotation response a...
journal_title：Journal of biomechanics
pub_type： 杂志文章,meta分析,评审
doi：10.1016/j.jbiomech.2019.109579
更新日期：2020-02-13 00:00:00
abstract：:There are two main types of fluid in bone tissue, blood and interstitial fluid. The chemical composition of these fluids varies with time and location in bone. Blood arrives through the arterial system containing oxygen and other nutrients and the blood components depart via the venous system containing less oxygen an...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2014.12.013
更新日期：2015-03-18 00:00:00
abstract：:The purpose of this project was to study a noninvasive method of evaluating limbs at risk of compartment syndrome. Untreated limb compartment syndrome may lead to irreversible dysfunction, chronic pain and contracture. An improved means of obtaining quantitative hardness measurements is reported. The handheld noninvas...
journal_title：Journal of biomechanics
pub_type： 临床试验,杂志文章
doi：10.1016/j.jbiomech.2004.07.030
更新日期：2005-08-01 00:00:00
abstract：:Soft tissue artefact (STA) and marker placement variability are sources of error when measuring the intrinsic kinematics of the foot. This study aims to demonstrate a non-invasive, combined ultrasound and motion capture (US/MC) technique to directly measure foot skeletal motion. The novel approach is compared to a sta...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2013.12.014
更新日期：2014-03-21 00:00:00
abstract：:Accurate knowledge of extraocular muscle (EOM) tension is important for the diagnosis of and surgical planning for strabismus, such as choosing which eye to operate or determining the amount of muscle displacement. Previous evaluations of passive EOM tension have relied extensively on the experience and skill of ophth...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2020.109955
更新日期：2020-08-26 00:00:00
abstract：:Muscle stiffness increases faster than muscle force during the rising phase of a tetanic contraction, and decreases more slowly during the falling phase. Different models of the stiffness arising from series, parallels, and crossbridge elasticity were compared to determine whether they could account quantitatively for...
journal_title：Journal of biomechanics
pub_type： 杂志文章,评审
doi：10.1016/0021-9290(90)90037-4
更新日期：1990-01-01 00:00:00
abstract：:To improve the treatments for low back pain, new designs of total disk replacement have been proposed. The question is how well these designs can act as a functional replacement of the intervertebral disk. Four finite element models were made, for four different design concepts, to determine how well they can mimic th...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2011.09.017
更新日期：2012-01-03 00:00:00
abstract：:Glaucoma is a common cause of blindness. Studies of this disease can involve collection of aqueous humor (AH) fluid from eyes of patients undergoing surgery, which involves aspirating a small fluid volume from the anterior region of the eye through a fine-bore needle. Unfortunately, the composition of the AH is spatia...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/j.jbiomech.2009.07.025
更新日期：2009-11-13 00:00:00
abstract：:The movements of the human jaw are controlled by the forces produced by the masticatory muscles. As the jaw moves, these muscles change in length and their force producing units, the sarcomeres, change in length simultaneously. The lengths and length changes of the sarcomeres are determinants for the forces they are a...
journal_title：Journal of biomechanics
pub_type： 杂志文章
doi：10.1016/s0021-9290(97)00047-x
更新日期：1997-09-01 00:00:00
