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Lattice Boltzmann simulation of behaviour of particles moving in blood vessels under the rolling massage

Yi Hou-Hui,Yang Xiao-Feng,Wang Cai-Feng,Li Hua-Bing,

中国物理 B , 2009,
Abstract: The rolling massage is one of the most important manipulations in Chinese massage, which is expected to eliminate many diseases. Here, the effect of the rolling massage on a pair of particles moving in blood vessels under rolling massage manipulation is studied by the lattice Boltzmann simulation. The simulated results show that the motion of each particle is considerably modified by the rolling massage, and it depends on the relative rolling velocity, the rolling depth, and the distance between particle position and rolling position. Both particles' translational average velocities increase almost linearly as the rolling velocity increases, and obey the same law. The increment of the average relative angular velocity for the leading particle is smaller than that of the trailing one. The result is helpful for understanding the mechanism of the massage and to further develop the rolling techniques.
Perineal massage
Laura Duarte González,Silvia García González,Ma Carmen Mejías Paneque
NURE Investigación , 2013,
Abstract: Most women want to give birth without perineal tears, cuts or sutures, because these often cause back pain and discomfort and may have a negative impact on sexual functioning. It is suggested that perineal massage during the last month of pregnancy as a possible way of allowing the perineal tissue to expand more easily during birth. Perineal massage, which makes the woman or her partner (for only one or two times a week from 35 weeks) reduces the likelihood of perineal trauma (mainly episiotomies) and perineal pain during and after birth.The FAME (Federation of Associations for Midwives in Spain) recognizes that perineal massage during pregnancy reduces perineal trauma (episiotomy and tears) during childbirth.
Asymptotic Behaviour of Truncated Stochastic Approximation procedures with Moving Bounds  [PDF]
Teo Sharia,Lei Zhong
Statistics , 2015,
Abstract: Asymptotic behaviour of stochastic approximation procedures is studied with three main characteristics: truncations with random moving bounds, a matrix valued random step-size sequence, and a dynamically changing random regression function. In particular, convergence, rate of convergence and asymptotic linearity results are presented. Main results are supplemented with corollaries to establish various sets of sufficient conditions, with the main emphases on the parametric statistical estimation. The theory is illustrated by examples and special cases.
Identification of Behaviour in Freely Moving Dogs (Canis familiaris) Using Inertial Sensors  [PDF]
Linda Gerencsér, Gábor Vásárhelyi, Máté Nagy, Tamas Vicsek, Adam Miklósi
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0077814
Abstract: Monitoring and describing the physical movements and body postures of animals is one of the most fundamental tasks of ethology. The more precise the observations are the more sophisticated the interpretations can be about the biology of a certain individual or species. Animal-borne data loggers have recently contributed much to the collection of motion-data from individuals, however, the problem of translating these measurements to distinct behavioural categories to create an ethogram is not overcome yet. The objective of the present study was to develop a “behaviour tracker”: a system composed of a multiple sensor data-logger device (with a tri-axial accelerometer and a tri-axial gyroscope) and a supervised learning algorithm as means of automated identification of the behaviour of freely moving dogs. We collected parallel sensor measurements and video recordings of each of our subjects (Belgian Malinois, N=12; Labrador Retrievers, N=12) that were guided through a predetermined series of standard activities. Seven behavioural categories (lay, sit, stand, walk, trot, gallop, canter) were pre-defined and each video recording was tagged accordingly. Evaluation of the measurements was performed by support vector machine (SVM) classification. During the analysis we used different combinations of independent measurements for training and validation (belonging to the same or different individuals or using different training data size) to determine the robustness of the application. We reached an overall accuracy of above 90% perfect identification of all the defined seven categories of behaviour when both training and validation data belonged to the same individual, and over 80% perfect recognition rate using a generalized training data set of multiple subjects. Our results indicate that the present method provides a good model for an easily applicable, fast, automatic behaviour classification system that can be trained with arbitrary motion patterns and potentially be applied to a wide range of species and situations.
Aging Behaviour of Al-Mg-Si Alloys Subjected to Severe Plastic Deformation by ECAP and Cold Asymmetric Rolling  [PDF]
S. Farè,N. Lecis,M. Vedani
Journal of Metallurgy , 2011, DOI: 10.1155/2011/959643
Abstract: A study was carried out on aging behaviour of a 6082 alloy processed by two different severe plastic deformation techniques: ECAP and asymmetric rolling. Both techniques were able to generate an ultrafine-grained structure in samples processed at room temperature. It was stated that severe straining promotes marked changes in the postdeformation aging kinetics. The peaks of β′′/β′ transition phases were anticipated and of progressively reduced intensity over the coarse grained alloy. A further peak accounting for onset of recrystallization also appeared in the most severely deformed samples. Full consistency in peak shape and position was found when comparing materials processed by ECAP and asymmetric rolling. Isothermal aging treatments performed at 180°C revealed that in the severely deformed samples, aging became so fast that the hardness curves continuously decreased due to overwhelming effects of structure restoration. On the contrary, aging at 130°C offers good opportunities for fully exploiting the precipitate hardening effects in the ultrafine-grained alloy. 1. Introduction Wrought Al-Mg-Si alloys (6xxx series aluminum alloys) are widely used for structural applications in aerospace and automotive industries owing to their strength, formability, weldability, corrosion resistance, and cost. The age hardening response of 6xxx series alloys can be very significant, leading to remarkable improvement of strength after an appropriate heat treatment. Their precipitation sequence has been reported in numerous research works, and a satisfactory agreement on phase evolution occurring during aging has been achieved [1–7]. A large number of wrought Al-Mg-Si alloys contain an excess of Si, above that required to form the Mg2Si (β) phase, to improve the age hardening response. For these alloys, the accepted precipitation sequence starting from a supersaturated solid solution is separate clusters of Si and Mg atoms, coclusters containing Mg and Si atoms, spherical GP zones, needle-like metastable β′′ phase, rod-like metastable β′ phase, Si precipitates, and platelets of equilibrium β phase. Among these, the β′′ precipitates are considered to give the main contribution to strength and hence they are mostly responsible for the peak age hardening effect [2, 4, 5, 8]. Several research works showed that the precipitation kinetics and even precipitation sequence are changed when the alloy structure is plastically deformed. Zhen et al. [5, 9] showed that when Al-Mg-Si alloys had been extensively cold rolled, their aging curves featured a decrease of the precipitation
Dynamical Behaviour of Axial Force Rayleigh Beam Traversed by Uniform Partialy Distributed Moving Loads
I.A. Adetunde
Research Journal of Applied Sciences , 2012,
Abstract: An investigation into the dynamical behaviour of axial force Rayleigh beam traversed by uniform partially distributed moving loads is carried out. The beam is assumed to be Prismatic while the shear deformation, rotatory inertia and damping are taking into consideration. The resulting coupled partial differential equation is solved using finite difference method. Graphs were prepared for the results obtained. It was found that the response amplitude for the moving mass problem is greater than the response amplitude of the moving force problem.
Dynamical Behaviour of Viscously Damped Rayleigh Beam Traversed by Uniform Partially Distributed Moving Masses
I.A. Adetunde
Research Journal of Applied Sciences , 2012,
Abstract: An investigation into the dynamic behaviour of Viscously damped Rayleigh beam traversed by a uniform spatially distributed moving masses is carried out. The beam is assumed to be prismatic while the effects of two kinds of pressure are considered, that is the moving load and moving force. The pertinent governing partial differential equations, the boundary and initial conditions were analyzed by a series solution in terms of the normalized deflection curve of the beam and the unknown functions of time. This resulted into a set of coupled ordinary differential equations which are numerically solved by the finite difference scheme with the aid of a Visual Basic 6.0 programme. It was observed that the response amplitude of a Rayleigh beam due to moving mass increased as mass and length of the load increased, whilst the amplitude was found to reduce with increasing time. It was further observed that the response amplitude due to moving force was greater than the response amplitude due to moving mass.
Condition Effect on Dynamic Behaviour of a Uniform Straight Composite and Isotropic Beam Due to Moving Force  [PDF]
Kambiz Bakhshandeh,Bahador Saranjam
Asian Journal of Scientific Research , 2008,
Abstract: In this study, the impact of boundary condition in dynamic behaviour of a straight beam under action of moving force is investigated. Furthermore, the effectiveness of various parameters such as beam geometry and material type on dynamic magnification factor is studied. This study shows that maximum dynamic magnification factor only depends on boundary condition. This value is obtained at a critical to moving load velocity ratio that is independent of material and beam geometry and only depends on boundary condition. The Maximum dynamic magnification factor for composite and isotropic material in each boundary condition is slightly different.
Touch and Massage for Medically Fragile Infants  [PDF]
Karen Livingston,Shay Beider,Alexis J. Kant,Constance C. Gallardo,Michael H. Joseph,Jeffrey I. Gold
Evidence-Based Complementary and Alternative Medicine , 2009, DOI: 10.1093/ecam/nem076
Abstract: Research investigating the efficacy of infant massage has largely focused on premature and low birth weight infants. The majority of investigations have neglected highly acute patients in academic neonatal intensive care units (NICUs). The current study was developed with two aims: (Phase 1) to develop, implement and demonstrate the feasibility and safety of a parent-trained compassionate touch/massage program for infants with complex medical conditions and (Phase 2) to conduct a longitudinal randomized control trial (RCT) of hand containment/massage versus standard of care in a level III academic Center for Newborn and Infant Critical Care (CNICC). Certified infant massage instructors (CIMIs) taught parents to massage their hospitalized infants. Massage therapy and instruction were performed for seven consecutive days and health outcomes were collected for up to 1 month following treatment. Caregivers, nurses and certified infant massage therapists indicated moderate to high levels of satisfaction and feasibility with the implementation of hand containment/massage in a level III academic center CNICC. In addition, infant behavioral and physiological measures were within safe limits during the massage sessions. All caregivers participating in the massage group reported high levels of satisfaction 7 days into the intervention and at the 1-month follow-up with regards to their relationship with their infant, the massage program's impact on that relationship and the massage program. Due to unequal and small sample sizes, between group analyses (control versus massage) were not conducted. Descriptive infant characteristics of health outcomes are described. Preliminary data from this study indicates feasibility and safety of infant massage and satisfaction among the caregivers, CIMIs and the nurses in the CNICC. An important contribution from this study was the demonstration of the infants' safety based on physiological stability and no change in agitation/pain scores of the infants receiving massage. Massage in a tertiary urban academic NICU continues to be an area of needed study. Future studies examining infant health outcomes, such as weight gain, decreased length of hospitalization and caregiver–infant bonding, would provide greater insight into the impact of massage for medically fragile infants.
Anxiolytic Effect of Aromatherapy Massage in Patients with Breast Cancer  [PDF]
Jiro Imanishi,Hiroko Kuriyama,Ichiro Shigemori,Satoko Watanabe,Yuka Aihara,Masakazu Kita,Kiyoshi Sawai,Hiroo Nakajima,Noriko Yoshida,Masahiro Kunisawa,Masanori Kawase,Kenji Fukui
Evidence-Based Complementary and Alternative Medicine , 2009, DOI: 10.1093/ecam/nem073
Abstract: We examined how aromatherapy massage influenced psychologic and immunologic parameters in 12 breast cancer patients in an open semi-comparative trial. We compared the results 1 month before aromatherapy massage as a waiting control period with those during aromatherapy massage treatment and 1 month after the completion of aromatherapy sessions. The patients received a 30 min aromatherapy massage twice a week for 4 weeks (eight times in total). The results showed that anxiety was reduced in one 30 min aromatherapy massage in State-Trait Anxiety Inventory (STAI) test and also reduced in eight sequential aromatherapy massage sessions in the Hospital Anxiety and Depression Scale (HADS) test. Our results further suggested that aromatherapy massage ameliorated the immunologic state. Further investigations are required to confirm the anxiolytic effect of aromatherapy in breast cancer patients.
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