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Mechanical vibration and shock - Evaluation of human exposure to whole-body vibration - Part 5: Method for evaluation of vibration containing multiple shocks
BS EN 14253:2003+A1:2007 Mechanical vibration. Measurement and calculation of occupational exposure to whole-body vibration with reference to health.
The mixing and burning of gasair jets in the presence of mechanical vibration of the injector was studied. Initial photographic Schlierer and spectroscopic observations of a H2air and coal gasair flame vibration conditions have been carried out. The vibration obviously enhances the rate of mixing and higher mean flame temperatures result. A closed solution was obtained for the case of a vibrated gas jet mixing with its surroundings, in the near-field potential core region. Generally speaking, the theory predicted that the vibration, treated as a source of vorticity, would raise the mean axial component of velocity at any point inside the mixing region. This was verified by a hot-wire anemometer investigation. Furthermore, it was established that the vibration drives the vortex shedding mechanism in the flow from an orifice. Author
Vibration White Finger or VWF is caused by the vibrations from power tools such as drills, chainsaws or hammers. Using such tools is common practice in many construction and industry working environments.. If you are suffering from vibration white finger as a result of your work, you may be entitled to compensation.. Vibration white finger can result in horrible symptoms, including constant pain in that hands which hugely reduce your quality of life, and it can stop you working for good in the job that you love. If youre worried about the financial implications of vibration white finger, you shouldnt hesitate to make a vibration white finger claim for compensation.. Your employer has a duty to protect you from injuries such as VWF and should have trained you accordingly to make you aware of the dangers and threats that are posed in these situations. If they have failed to do so, then they become liable for compensation claims against them.. If you have not been protected from VWF then Contact ...
I am very interested in new and unusual uses of sound and vibration, and the thought occurred to me: if a molecules temperature is the result of mechanical vibration, could an inverse frequency be applied so that the molecule is slowed (and therefore, cooled) via distructive interference? Could (or does) matching the molecules vibrational frequency result in more efficient heating ...
Mechanical vibration - Evaluation of machine vibration by measurements on rotating shafts - Part 2: Land-based steam turbines and generators in excess of 50 MW with normal operating speeds of 1500 r/min, 1800 r/min, 3000 r/min and 3600 r/min
Mechanical Vibrations: Modeling and Measurement describes essential concepts in vibration analysis of mechanical systems. It incorporates the required mathematics, experimental techniques, fundamentals of model analysis, and beam theory into a unified framework that is written to be accessible to
Mechanical vibration and shock - Human exposure - Biodynamic coordinate systems (ISO 8727:1997, IDT) - SS-ISO 8727:2018This International Standard specifies anatomical and basicentric coordinate systems for biodynamical measurements, for reference purposes in cognate standard...
Sound • The human auditory system. • Noise and health Hearing damage risk. • Non-auditory health risks, vegetative responses. • Disturbance of speech communication Prediction. • Standards. • Annoyance at home and in other environments. • Sleep disturbance. • Planning and noise. Vibration • Principles of the measurement and evaluation of human vibration exposures. • Standards and Directives for whole-body vibration and hand-transmitted vibration. • Health effects of whole-body vibration. • Effects of whole-body vibration on activities. • Discomfort produced by whole-body vibration. • Vibration thresholds. • Building vibration. • Biodynamics (body transmissibility, apparent mass, models). • Seating dynamics (transmissibility, SEAT value, models). • Health effects of hand-transmitted vibration, their diagnosis, and prevention. • Measurement, evaluation, and assessment of the vibration of powered hand-held tools. • Causes of motion sickness in marine, land and ...
PURPOSE The present study was designed to investigate the electromyographic (EMG) response in leg muscles to whole-body vibration while using different body positions and vibration frequencies. METHODS Twenty male sport sciences students voluntarily participated in this single-group, repeated-measures study in which EMG data from the vastus lateralis (VL) and the lateral gastrocnemius (LG) were collected over a total of 36 trials for each subject (4 static positions × 9 frequencies). RESULTS We found that vibration frequency, body position and the muscle stimulated had a significant effect (P-values ranged from 0.001 to 0.031) on the EMG response. Similarly, the muscle × frequency and position × muscle interactions were significant (P | 0.001). Interestingly, the frequency × positions interactions were not significant (P | 0.05). CONCLUSIONS Our results indicate that lower frequencies of vibration (25-35 Hz) result in maximal activation of LG, whereas higher frequencies (45-55 Hz) elicit the
OBJECTIVES: Short-term whole-body vibration training (WBVT) has emerged as an exercise method for improving neuromuscular performance and has been proposed for injury prevention and rehabilitation. This study investigated the effects of a short-term (,/=2 months) WBVT program using a side-to-side vibration on: (i) strength profile of knee extensors (KE) and flexors (KF), (ii) functional hamstrings-to-quadriceps ratio (ECC(KF)/CON(KE)), (iii) flexibility and (iv) vertical jumping performance (VJ). Furthermore, we explored the retention of performance gains 21 days following WBVT. DESIGN: Randomized-controlled trial. METHODS: Twenty-six moderately active females (20.40+/-0.27 years) were assigned to a vibration (VG) or a control group (CG). The short-term WBVT program consisted of sixteen-sessions on a side-to-side vibration platform (frequency: 25Hz, amplitude: 6mm, 2 setsx5min). Isokinetic and isometric peak torque of KE and KF, ECC(KF)/CON(KE), flexibility, and VJ were measured pre, 2 days ...
TY - JOUR. T1 - Effect of whole-body vibration training on body composition, exercise performance and biochemical responses in middle-aged mice. AU - Lin, Ching I.. AU - Huang, Wen Ching. AU - Chen, Wen Chyuan. AU - Kan, Nai Wen. AU - Wei, Li. AU - Chiu, Yen Shuo. AU - Huang, Chi Chang. PY - 2015/9/1. Y1 - 2015/9/1. N2 - Aims Whole-body vibration (WBV) is a well-known light-resistance exercise by automatic adaptations to rapid and repeated oscillations from a vibrating platform, which is also a simple and convenient exercise for older adults. However, the potential benefits of WBV on aging-associated changes in body composition, exercise performance, and fatigue are currently unclear. The objective of the study is to investigate the beneficial effects of WBV training on body composition, exercise performance, and physical fatigue-related and biochemical responses in middle-aged mice. Methods In total, 24 male C57BL/6 mice aged 15 months old were randomly divided into 3 groups (n = 8 per group): ...
There is general agreement that physical exercise can positively influence osteoporotic fracture risk along two pathways: first by reducing the risk of falls via an improvement of fall related neuromuscular abilities; second by increasing bone strength.. Whole body vibration (WBV) training has recently been proposed as a new approach for prevention and treatment of osteoporosis. Animal studies have shown evidence that WBV may be an effective method to improve bone mass, architecture and strength. However, the results of human WBV training studies are rather heterogeneous.. In the Erlangen Longitudinal Vibration Study II (ELVIS II), a randomized, controlled 12 month lasting study the investigators determine the effect of a thrice weekly WBV training on two different devices on the osteoporotic risk factors: bone mineral density, falls and neuromuscular performance. Particular the investigators compare a bipedal vertical oscillating Plate with a plate which rotates around a central axis leading to ...
Abstract. This work explored the short-term effect of whole body vibration (WBV) training on anthropometry, body composition and muscular strength in obese women. Fifty obese women (age=46.8±7.81[SD]y; BMI=35.1±3.55kg/m2) were assigned to a ten-week WBV training period, two times a week (in each session, 14min vibration training, 5min rest; vibration amplitude 2.0-5.0mm, frequency 40-60Hz), with (n=18) or without (n=17) radiofrequency, or to a non-exercise control group (n=15). Subjects were instructed not to change their habitual lifestyle. Before and after the ten-week experimental period, anthropometric measurements, dual-energy X-ray absorptiometry (DXA), and the leg press, leg curl and leg extension strength tests were carried out. All changes in the two groups of WBV training, with or without radiofrequency, were similar and these groups were combined in a single WBV intervention group. As compared to controls, subjects submitted to WBV training had significantly lower BMI, total body ...
The purpose of this study was to investigate the effects of a single bout of whole-body vibration on isometric squat (IS) and countermovement jump (CMJ) performance. Nine moderately resistance-trained men were tested for peak force (PF) during the IS and jump height (JH) and peak power (PP) during t …
This study is a randomized controlled trial aimed to assess the efficacy of a 10-week whole body vibration training program on physical functioning, societal participation and quality of life in individuals with chronic stroke. It is hypothesized that the whole body vibration program will induce significantly more gain in physical functioning, societal participation, and quality of life in chronic stroke patients, compared with the control group ...
National Instruments recently announced the latest version of its NI Sound and Vibration Measurement Suite software, which provides a comprehensive collection of analysis and signal processing tools for noise, vibration and harshness (NVH) testing, machine condition monitoring (MCM) and audio test applications. Engineers can use the suite as stand-alone software or combine it with NI hardware and NI LabVIEW system design software to simplify test system development and control. With its new vibration data-logging functionality and other enhancements, the Sound and Vibration Measurement Suite 2011 helps engineers to more easily customize and automate any MCM or NVH test or monitoring application.. The NI Sound and Vibration Measurement Suite is an integral part of our MCM applications, said professor Jay Lee, director of the National Science Foundations Industry/University Cooperative Research Center for Intelligent Maintenance Systems at the University of Cincinnati. The suite has ...
Mechanical vibrations and flow fluctuation give rise to complex interactive vibration mechanisms in hydraulic pumps. The working conditions for a hydraulic pump are therefore required to be improved in the design stage or as early as possible. Considering the structural features, parameters, and operating environment of a hydraulic plunger pump, the vibration modes for two-degree-of-freedom system were established by using vibration theory and hydraulic technology. Afterwards, the analytical form of the natural frequency and the numerical solution of the steady-state response were deduced for a hydraulic plunger pump. Then, a method for the vibration analysis of a hydraulic pump was proposed. Finally, the dynamic responses of a hydraulic plunger pump are obtained through numerical simulation.
Progress in solving the problem of hand-arm vibration for chain saw operators in Sweden from 1967 to date is reviewed. When the National Swedish Testing Institute for Agricultural Machinery measured vibration in chain saws in 1974, the average vibration level of the chain saws used in Sweden had been reduced to 30 to 40 Newtons from some 150 Newtons in 1967 as a result of manufacturers technical
If you have suffered an VWF as a result of operating vibrating machinery you may be entitled to vibration white finger compensation and you should contact our solicitors** in Bolton to obtain further information.. Vibration white finger compensation may be available if you suffer from symptoms such as numbing of the fingers, throbbing in the fingers, changes to your sense of touch, lack of strength in the fingers or the loss of colour in fingers (which normally occurs in cold weather).. The cause of injury normally relates to use of vibrating machinery such as large drills, chainsaws, trimmers, concrete breakers or other types of pneumatic drilling systems. This type of injury normally arises after a long period of use of such machinery, and may well not be immediately noticeable.. In order to assess vibration white finger compensation, a number of factors will be assessed. These include discussing the working arrangements which may have caused the injury, the length of time you may have been ...
This pilot study was to examine the feasibility and tolerance of whole body vibration therapy (WBVT) for children and adults with moderate severity of cerebral palsy (CP) being graded as levels III or IV on the Gross Motor Function Classification Scale (GMFCS). Study participants received the additional WBVT when standing still on the vibration platform for three 3-min bouts of vibration (20 Hz, 2 mm amplitude), 4 days per week for 4 weeks. In addition to questions relating to feasibility and participants opinions, assessment at baseline and completion of the intervention included the Gross Motor Function Measure-66 Item Set (GMFM-66 IS), 2-min walk test (2MWT), Timed Up and Go test (TUG) and Pediatric Evaluation of Disability Inventory (PEDI). Wilcoxon Signed Ranks test was used to compare the results. Fourteen participants (mean age = 25.25 years SD 3.71; 9 males, 64%; GMFCS level III n = 13, 92%) were recruited and completed the study. The attendance rate was over 90% with no adverse events. All
Fat accumulates in the bone marrow of lumbar vertebrae with bed rest. Exercise with or without whole body vibration may counter this effect. Our objectives were to measure 1) the vertebral fat fraction (VFF) of men subjected to bed rest who performed resistive exercises with (RVE, n = 7) or without whole body vibration(RE, n = 8) or no exercise (CTR, n = 9) using three MRI techniques; and 2) changes in peripheral blood counts. Twenty-four healthy men (age: 20-45 yr) underwent -6 degrees head-down tilt (HDT) bed rest for 60 days. MRI was performed using three techniques (fat saturation, proton spectroscopy, and in and out of phase) to measure the fat fraction of L(3), L(4), and/or L(5) at baseline, mid-HDT, and end-HDT. Erythrocytes and leukocytes were counted at HDT days 19, 33, 47, 54, and 60. The mean absolute VFF was increased in the CTR group at mid-HDT and end-HDT (+3.9 +/- 1.3 and +3.6 +/- 1.2%, respectively, both P , 0.05). The RE group had a smaller VFF change than the CTR group at ...
EU directive 2002/44/EC on the minimum health and safety requirements regarding the exposure of workers to the risks arising from physical agents (vibration) has been in force since July 2002. In order to support transposition of the directive at national level, a guide intended for the Member States has been produced (manuals in German on the subject of hand-arm vibration (PDF, 1.5 MB) and whole-body vibration (PDF, 2.6 MB) are available for download in PDF format).. The German Ordinance on noise and vibration (LärmVibrationsArbSchV) of 6 March 2007 transposes the EC directive governing the protection of workers against vibration, together with the directive governing their protection against noise, into German law. The TRLV technical rules on vibration of March 2015 pursuant to the LärmVibrationsArbSchV provide information on the latters implementation.. At workplaces involving vibration exposure, risk assessments are mandatory. In this context, the A(8) daily vibration exposure value ...
Machine availability can change without notice. Visit each machines product page for availability information.. * Soft Triplanar motion was designed to replace regular Triplanar motion. It provides the same benefits as Triplanar motion, but is safe to use and will not harm knee joints or soft tissue.. ...
The main objective of the thesis is to propose the methods of determining vibration behavior of carbon nanotubes (CNTs) using continuum models and finite element models. Secondary objective is to find the effect of van der Waals force on vibration of multiwalled carbon nanotubes . The study of vibration behavior of CNTs is important because of their potential engineering applications such as nano-mechanical resonators and tips of scanning probe instruments where they are subjected to mechanical vibrations. Continuum modeling is based on an elastic beam model. The interlayer van der Waals interactions are represented by Lennard-Jones potential. In finite element modeling, single walled nanotubes (SWNTs) are modeled as finite beam elements and multi-walled nanotubes (MWNTs) as finite solid elements. The interlayer van der Waals interactions are simulated by distributed springs. The proposed finite element approach and continuum approach for vibration analysis of CNTs are verified by comparing the results
Non-contact testing is an important method for the study of the vibrating characteristic of cylindrical resonators. For the vibratory cylinder gyroscope excited by piezo-electric electrodes, mode testing of the cylindrical resonator is difficult. In this paper, a novel vibration testing method for cylindrical resonators is proposed. This method uses a MEMS microphone, which has the characteristics of small size and accurate directivity, to measure the vibration of the cylindrical resonator. A testing system was established, then the system was used to measure the vibration mode of the resonator. The experimental results show that the orientation resolution of the node of the vibration mode is better than 0.1°. This method also has the advantages of low cost and easy operation. It can be used in vibration testing and provide accurate results, which is important for the study of the vibration mode and thermal stability of vibratory cylindrical gyroscopes.
Ankle injuries are one of the most common injuries in sport, often leading to functional deficits and instability, a vicious cycle of recurrent sprains and time loss due to injury. Although research has been conducted on the best methods of treating such deficits and instability, new training methodologies are continually being sought to help improve clinical outcomes and with this comes a need for designed research to test such hypotheses. The purpose of the present research was to investigate the effect of vibration training on balance and muscle function in physically active individuals suffering self reported functional ankle instability (FAI). Stage one of the research was to initially investigate the effect of a six week whole body vibration training (WBVT) exercise routine on 38 University dancers reporting FAI. An initial assessment of the severity of the instability was done using the Cumberland Ankle Instability Tool (CAIT), to identify those who classed themselves functionally ...
A WORD ABOUT VIBRATION. Vibration in a driveshaft can be caused by many conditions. One of the most common cause of driveline vibration are worn U-joints or slip splines, out-of-balance components, yokes out of phase or misaligned angles, approaching critical speed range, and yoke ears that are not concentric with the splines. Vibrations problems must be diagnosed accurately and corrected quickly to avoid damage to the driveline components. It is often difficult to determine if a vibration of vehicle is coming from the driveshaft or something else. Here are some things to think about while you are troubleshooting any driveshaft problem. First, Second and Third Order Driveshaft Vibrations. A First order driveshaft vibration will cause one shake or disturbance for each revolution of the driveshaft. IMPORTANT: Anything that is out of balance will only cause a first order vibration, never any higher order vibrations.. First order driveshaft vibration is usually caused by:. ...
TY - JOUR. T1 - Vibration therapy accelerates healing of Stage I pressure ulcers in older adult patients.. AU - Arashi, Midori. AU - Sugama, Junko. AU - Sanada, Hiromi. AU - Konya, Chizuko. AU - Okuwa, Mayumi. AU - Nakagami, Gojiro. AU - Inoue, Ayumi. AU - Tabata, Keiko. PY - 2010/7. Y1 - 2010/7. N2 - OBJECTIVE: The present study investigated whether vibration therapy using a vibrator could facilitate the healing of Stage I pressure ulcers (PrUs) in older adults. METHODS: The study had a nonrandomized, blinded, controlled design. The subjects were hospital patients in long-term-care facilities with Stage I PrUs. In the experimental group, a vibrator (RelaWave; Matsuda Micronics Corp, Chiba, Japan) was used to apply vibration (frequency: 47 Hz; time: 10 seconds; amplitude modulation cycle: 15 seconds) for 15 minutes 3 times a day for up to 7 days, until Stage I PrUs healed. Apart from the vibration therapy, the experimental and control groups received the same care, which was provided according ...
Most who work on that probably likely have experience specifically in aeroelasticity rather than a previous focus specifically just on vibrations or just on aerodynamics. I am sure there are exceptions to that rule, but that would be the most common route. The field itself is certainly related to both solids/vibrations and aerodynamics and requires knowledge of both, though it does seem to skew slightly toward solids in my admittedly limited experience with the topic ...
In 2007, research funded by the National Space Biomedical Research Institute compared the effects of exercising on a Lineal machine with the same exercises performed on a Pivotal machine.. They found that in all the body postures they tested: transmission of vibration to the head was 71 to 189% greater during vertical (Lineal) than rotational (Pivotal) vibration. and that rotational (Pivotal) vibration has the lowest risk of negative side effects.. Abercromby, A., et al. Vibration Exposure and Biodynamic Responses During Whole Body Vibration Training. Med Sci Sports Exerc. 2007 Oct;39(10):1794-800.. Other researchers have reported the following damage caused by using low magnitude Lineal vibration:. ...
Whole Body Vibration: The Not-So-New Way to Train, As fitness professionals,we should always be looking for that next tool or training method that willhelp our clients achieve a higher level of success. Whole Body Vibration (WBV) notonly helps our clients achieve a higher level of fitness -- but it does it in ashorter period of time. Although WBV has been available for the personaltraining community for over a decade, it has yet to become a standard
Preface xv. Symbols xix. 1 Introduction: Basic Concepts and Terminology 1. 1.1 Concept of Vibration 1. 1.2 Importance of Vibration 4. 1.3 Origins and Developments in Mechanics and Vibration 5. 1.4 History of Vibration of Continuous Systems 8. 1.5 Discrete and Continuous Systems 11. 1.6 Vibration Problems 15. 1.7 Vibration Analysis 16. 1.8 Excitations 17. 1.9 Harmonic Functions 18. 1.10 Periodic Functions and Fourier Series 24. 1.11 Nonperiodic Functions and Fourier Integrals 26. 1.12 Literature on Vibration of Continuous Systems 29. References 29. Problems 31. 2 Vibration of Discrete Systems: Brief Review 33. 2.1 Vibration of a Single-Degree-of-Freedom System 33. 2.2 Vibration of Multidegree-of-Freedom Systems 43. 2.3 Recent Contributions 60. References 61. Problems 62. 3 Derivation of Equations: Equilibrium Approach 68. 3.1 Introduction 68. 3.2 Newtons Second Law of Motion 68. 3.3 DAlemberts Principle 69. 3.4 Equation of Motion of a Bar in Axial Vibration 69. 3.5 Equation of Motion of a Beam ...
Vibrations play an essential role in the natural behaviour of animals, particularly among invertebrates. For example, spiders and antlions use vibrations produced by prey during hunting (Mencinger-Vračko and Devetak, 2008; Guillette et al., 2009; Nakata, 2010), and larval leafminers use vibrations to detect and avoid parasitoid wasps (Djemai et al., 2001). Animal vibrations can be transmitted both through the air (sound) and through the underlying substrate (most often plant tissue) as substrate-borne vibrations (Cocroft and Rodríguez, 2005). The substrate-borne component of vibrations can be particularly important in some contexts such as during insect communication because vibrations produced by small animals can be more efficiently transmitted through the substrate than through air (i.e. as sound) (Barth et al., 2005; Cocroft and Rodríguez, 2005; Mortimer, 2017).. Most studies of insect vibrations have focused on vibrations produced for communication or as a by-product of flight (Tercel et ...
Whole-body vibration training is a method for muscle strengthening that is increasingly used in a variety of clinical situations. Key descriptors of vibration devices include the frequency, the amplitude, and the direction of the vibration movement. In a typical vibration session, the user stands on the device in a static position or performs dynamic movements. Most authors hypothesize that vibrations stimulate muscle spindles and alpha-motoneurons, which initiate a muscle contraction. An immediate effect of a non-exhausting vibration session is an increase in muscle power. Most studies of the longer term use of vibration treatment in various disorders have pursued three therapeutic aims: increasing muscle strength, improving balance, and increasing bone mass. In a small pilot trial in children we noted improvements in standing function, lumbar spine bone mineral density, tibial bone mass, and calf muscle cross-sectional area.. ...
In this case we finally got what we usually consider to be a true vibration. In fact that is the point of critical damping. As we increase the damping coefficient, the critical damping coefficient will be the first one in which a true oscillation in the displacement will not occur. For all values of the damping coefficient larger than this (i.e. over damping) we will also not see a true oscillation in the displacement.. From a physical standpoint critical (and over) damping is usually preferred to under damping. Think of the shock absorbers in your car. When you hit a bump you dont want to spend the next few minutes bouncing up and down while the vibration set up by the bump die out. You would like there to be as little movement as possible. In other words, you will want to set up the shock absorbers in your car so get at the least critical damping so that you can avoid the oscillations that will arise from an under damped case.. Its now time to look at systems in which we allow other external ...
books.google.comhttps://books.google.com/books/about/Mechanical_vibration_and_shock_measureme.html?id=ch0IAQAAIAAJ&utm_source=gb-gplus-shareMechanical vibration and shock measurements ...
books.google.comhttps://books.google.com/books/about/Mechanical_vibration_and_shock_measureme.html?id=ch0IAQAAIAAJ&utm_source=gb-gplus-shareMechanical vibration and shock measurements ...
One thing that does not get mentioned is the great desirability, when recording an image stack, for very low vibration even after the exposure. This is more obvious with higher magnification microscope images, and particularly wet mounts. With good EFSC there will be no vibration effects in each individual frame. However, in some DSLRs the mirror will cycle before the next exposure in conjunction with the shutter re-cocking. In some instances, this mirror motion can cause a slight jiggling of the subject on the slide, making stacking more difficult or even impossible. Naturally this is not an issue with a mirrorless camera. Certain Canon models use a separate motors for the shutter and mirror mechanisms, and those can be set so that the mirror does not cycle between shots ...
The vibrational spectrum of an η[superscript 1],η[superscript 1]-1,2-peroxodiiron(III) complex was measured by nuclear resonance vibrational spectroscopy and fit using an empirical force field analysis. Isotopic 18O2 labelling studies revealed a feature involving motion of the {Fe2(O2)}[superscript 4+] core that was not previously observed by resonance Raman spectroscopy ...
The latest design from Confidence Fitness is the new Vibration Plate. This compact machine is the answer to low impact, easy exercise with fast results in your own home. With a user friendly display console and simple to navigate menu, will make even the most inexperienced gym goers comfortable in training immediately. The Vibration Plate enhances even the most casual of activities and maximises the potential of your normal fitness regime. Whether your aim is to reduce weight improving your fitness and flexibility, or build up your muscles the power plate trainer plus will help you reach your goals. Sitting, standing or even lying on the vibration plate while doing simple weight-bearing exercises allows the vibration to stimulate and amplify the exercise. The vibration plate creates a high frequency vibration which causes a stretch reflex within the body. This means that the muscles contract involuntarily so creating the effects of exercise without the exertion of conventional exercises. The ...
A treatment known as whole body vibration therapy significantly increases bone strength among adolescents with cerebral palsy, a new clinical trial from New Zealand shows. The results were presented Saturday at The Endocrine Societys 95th Annual Meeting in San Francisco.
See Our Vibra Therapy models , Questions?. Kurt Jackson,PT,PhD,GCS, is the neurology coordinator and Harold Merriman,PT,PhD,CLT is the general medicine coordinator for the Doctor of Physical Therapy Program in the Department of Health and Sports Science at the University of Dayton in Dayton, OH.. REFERENCES. 1. Abercromby AF, Amonette WE, Layne CS, et al. Vibration exposure and biodynamic responses during whole-body vibration training. Med Sci Sports Exerc. 2007;39(10):1794-1800.. 2. Jordan MJ, Norris SR, Smith DJ, Herzog W. Vibration training: an overview of the area, training consequences, and future considerations. J Strength Cond Res. 2005;19(2):459-466.. 3. Cardinale M, Bosco C. The use of vibration as an exercise intervention. Exerc Sport Sci Rev. 2003;31(1):3-7.. 4. Bosco C, Colli R, Introini E, et al. Adaptive responses of human skeletal muscle to vibration exposure. Clin Physiol. 1999;19(2):183-187.. 5. Nishihira Y, Iwasaki T, Hatta A, et al. Effect of whole body vibration stimulus and ...
By analyzing the measurement data, vibration measurement gives a clear picture of the machine. On this basis a good estimation of the machines efficiency, mechanical risks and required maintenance can be made. Vibration measurements make a vital contribution to predictive maintenance and continuity assurance.. To perform the measurements and analysis, vibration sensors need to be carefully placed on specific places of the machine, depending on the application. Through a data collector, all the information will be stored. This data is analyzed by one of our specialists and on the basis of the analysis, a report of recommendations can be drawn up.. ...
NATIONAL TAIWAN UNIVERSITY - Effect of Whole Body Vibration on Muscle Tone and Hardness of Lower Extremity in the Patients with Spinal Cord Injury ...
At present it seems likely that the different components of the hand-arm vibration syndrome, eg, vibration-induced white finger (VWF), numbing of the hands and arms, muscular fatigue, and occasionally prevalent bone degeneration, may arise independently, and therefore they should be evaluated separately. Evidence of changes caused in the autonomic nervous functions of the body by local vibration is not conclusive. The vascular history should be confirmed objectively with a cold provocation test under laboratory conditions. In individual diagnostics it is useful to record (with modern plethysmographic techniques) the recovery of digital temperature, digital blood pressure, and flow after local cooling. Vibrotactile perception measurement seems to be suitable for group diagnosis. Much of the diagnostic weight for VWF can be obtained from accurate case histories, although, for early changes, the history may be atypical. The lack of simple objective tests for evaluating the hand-arm vibration ...
ABSTRACT In a study of vibration-induced white finger (VWF) 39 chain saw operators, being representative of 365 lumberjacks according to a completed questionnaire, underwent clinical investigation. In a medical interview 13 of the 39 had VWF and 26 were without finger symptoms. In the subjects with VWF both hands were equally affected, the third and fourth finger most frequently; the thumbs were always normal. A cold provocation test, measuring the finger systolic blood pressure with a cuff technique during combined body cooling and finger cooling to 30, 15, and 6°C, was applied to the 39 chain saw operators and to 20 age-matched outdoor workers who had not used vibrating hand tools. The finger most often showing Raynauds phenomenon was cold provoked, and a non-affected finger was used as a reference. The systolic pressure gradient measured at 30°C from the upper arm to the cooled finger was increased in the chain sawyers most severely affected by VWF compared with the control group and with ...
OBJECTIVES To investigate the acute effects of the frequency of hand transmitted vibration on finger circulation. A further aim was to investigate whether the frequency weighting assumed in current standards for hand transmitted vibration reflects the haemodynamic changes which occur in the fingers exposed to vibration with different frequencies but with the same frequency weighted acceleration magnitude.. METHODS Finger skin temperature (FST) and finger blood flow (FBF) were measured in the middle fingers of both hands of 10 healthy men. With a static load of 10 N, the right hand was exposed for 15 minutes to the following root mean square (rms) acceleration magnitudes and frequencies of vertical vibration: 5.5 m/s2 at 16 Hz; 11 m/s2 at 31.5 Hz; 22 m/s2 at 63 Hz; 44 m/s2 at 125 Hz; and 88 m/s2 at 250 Hz. These exposures to vibration produce the same frequency weighted acceleration magnitude (5.5 m/s2rms) according to the frequency weighting included in the international standard ISO 5349. A ...
There is the suggestion in the literature that vibration may potentate the effects of noise and may thus increase the risk of hearing loss. However in human experimental studies, which, by necessity, are limited to low levels of TTS, the effects measured while generally consistent, are relatively small. A very limited number of animal studies have also shown an enhanced hearing loss in the presenc
Dentists, dental technicians and dental hygienists use vibrations from motorized dental equipment, which can cause a condition called Hand-Arm Vibration Syndrome (HAVS)
A device to be worn in the ear of a subject provides a direct vibrational drive to the tympanic membrane through a vibrationally conductive assembly which couples vibrations from a vibratory transducer positioned within the ear canal proximal to the tympanic membrane. In one embodiment of the invention, the device is a hearing aid positioned inconspicuously deep within the ear canal. The vibrationally conductive assembly is removably attached to the umbo area of the tympanic membrane. The vibrationally conductive assembly is designed to conduct vibrations in the audible frequency range while absorbing static forces caused by device placement and ear canal movement attributable to jaw movements of the wearer, including speaking, eating, drinking, chewing, yawning, and so forth. The unique coupling characteristics of the vibrationally conductive assembly allow for a highly efficient transfer of vibrations in the audible frequency range to the tympanic membrane without exerting damaging forces on the
TY - JOUR. T1 - Intramolecular vibrational energy redistribution in S0 benzene at low vibrational energies. AU - Whetton, Narrelle T.. AU - Lawrance, Warren D.. PY - 1992/1/3. Y1 - 1992/1/3. N2 - Rotationally resolved dispersed fluorescene spectra from the 61 level of benzene have been used to probe intramolecular vibrational energy redistribution in the ground electronic state. The level 12 (Evib=1986 cm-1) and 13 (Evib=2979 cm-1) are observed to be each coupled to a single close-lying level. We propose that the pertubing levels are 52 in the case of 12 and 5211 in the case of 13. The coupling constant k1155 has been determined to be 1.4 cm-1.. AB - Rotationally resolved dispersed fluorescene spectra from the 61 level of benzene have been used to probe intramolecular vibrational energy redistribution in the ground electronic state. The level 12 (Evib=1986 cm-1) and 13 (Evib=2979 cm-1) are observed to be each coupled to a single close-lying level. We propose that the pertubing levels are 52 in ...
INTRODUCTION: This study aimed to determine the prevalence of Dupuytrens disease in men and its relationship with work exposure, particularly heavy manual work with and without significant use of vibrating tools, using data from a surveillance program for musculoskeletal disorders. METHOD: This cross-sectional study was conducted in France between 2002 and 2005. Dupuytrens disease was diagnosed clinically by one of 83 occupational physicians. Exposure in relation to work status and occupational risk factors was assessed with a self-administered questionnaire, and categorised according to vibration exposure (defined as use of vibrating tools for ≥2 h/day), heavy manual work without vibration exposure (defined as use of hand tools for ≥2 h/day (use of vibrating tools for ≥2 h/day excluded) and Borg scale ≥15/20) and no such exposure. Bivariate and multivariate associations using logistic models were recorded in men and in those with |10 years in the same job. RESULTS: Of 2161 men, 1.3% (n=27)
Background and Objectives During speech, the vocal folds oscillate at frequencies ranging from 100-200 Hz with amplitudes of a few millimeters. Mechanical stimulation is an essential factor which affects metabolism of human vocal folds. The effect of mechanical vibration on the cellular response in the human vocal fold fibroblasts cells (hVFFs) was evaluated. Materials and Method We created a culture systemic device capable of generating vibratory stimulations at human phonation frequencies. To establish optimal cell culture condition, cellular proliferation and viability assay was examined. Quantitative real time polymerase chain reaction was used to assess extracellular matrix (ECM) related and growth factors expression on response to changes in vibratory frequency and amplitude. Western blot was used to investigate ECM and inflammation-related transcription factor activation and its related cellular signaling transduction pathway. Results The cell viability was stable with vibratory ...
In this crossover study we investigated the differential treatment effects of visual exploration training alone and visual exploration training in combination with neck muscle vibration. The results provide clear evidence that the addition of contralesional neck vibration to a standard method of treating neglect leads to additive and lasting treatment effects. Further, we showed that the additive effects of vibration transferred from trained tasks (visual exploration) to untrained tasks (text reading), and from the visual to the tactile mode. Moreover, the combined treatment led to a reduction in daily life problems concerning self care, reaching and grasping, and spatial orientation in comparison with the effects achieved by exploration training alone.. These improvements are not the result of therapeutic cost effects because in the exploration tasks as well as in text reading the amelioration of exploration behaviour on the contralesional left side was not accompanied by an increase of ...
An electronic still camera with a printer includes a vibration detector and a system controller. The vibration detector detects vibration relative to a moving direction of an exposure head of the printer. When the vibration detector detects the vibration exceeding a prescribed level, the system controller interrupts a printing operation of the printer. After that, when the vibration detector detects the vibration falling below the prescribed level, the system controller resumes the printing operation. The exposure head is adapted to be moved, performing the printing operation one line by one line. Until the printing operation for one line is completed, the system controller suspends to interrupt the printing operation.
OBJECTIVE: To examine the therapeutic potential of stochastic vibrotactile stimulation (SVS) as a complementary non-pharmacological intervention for withdrawal in opioid-exposed newborns. STUDY DESIGN: A prospective, within-subjects single-center study was conducted in 26 opioid-exposed newborns ( | 37 weeks; 16 male) hospitalized since birth and treated pharmacologically for Neonatal Abstinence Syndrome. A specially-constructed mattress delivered low-level SVS (30-60Hz, 10-12mum RMS), alternated in 30-min intervals between continuous vibration (ON) and no vibration (OFF) over a 6-8 hr session. Movement activity, heart rate, respiratory rate, axillary temperature and blood-oxygen saturation were calculated separately for ON and OFF. RESULTS: There was a 35% reduction in movement activity with SVS (p|0.001), with significantly fewer movement periods | 30 sec duration for ON than OFF (p = 0.003). Incidents of tachypneic breaths and tachycardic heart beats were each significantly reduced with SVS, whereas
In human subjects the triceps surae of one leg was exercised eccentrically by asking subjects to walk backwards on an inclined treadmill. Before the exercise controlled local pressure, applied to the muscle with an electromagnet, produced mild soreness, which was reduced when the pressure was combined with vibration. When delayed-onset muscle soreness (DOMS) had set in, 24-48 h after the exercise, vibration increased pain from local pressure. Vibrating at different frequencies suggested 80 Hz as the optimal frequency. During 2-h testing post-exercise, evidence of a change in character of the effects of vibration was first detected at 6 h. It persisted up to 72 h post-exercise. When muscle pain was generated in an unexercised triceps by injection of hypertonic (5%) saline, controlled local pressure applied to the sore area increased pain levels by 32% while pressure plus vibration reduced this to 11%. In a subject with DOMS, local pressure again increased pain from saline by 32% but combining it ...
Hello and welcome to Hearing TV. My name is Merren Davies.. In the last episode we discussed Middle Ear hearing implants.. Today we are going to INTRODUCE the COCHLEAR IMPLANT.. The cochlear implant could be described as the ULTIMATE SOLUTION for people who cannot benefit from a conventional hearing aid.. To understand how the COCHLEAR IMPLANT works we need to remind ourselves of how normal hearing works:. Sounds around us reaches our ears by a relay of air molecule vibrations. These vibrations reach our eardrum, which transmit the VIBRATION of sound through to the INNER EAR via the interconnection of the 3 smallest bones in the body, which CONNECT the EARDRUM to the INNER EAR - the COCHLEA.. The COCHLEA changes the mechanical Vibration into an Electrical signal, which is picked up by our Hearing Nerve and transmitted up to the BRAIN - where the true HEARING happens.. Most permanent hearing losses are due to a malfunction of the INNER EAR. The COCHLEAR IMPLANT is designed to replace the ...
Noise has many meanings but in the context of environmental management the term is synonymous with sound or acoustic energy and is taken to include mechanical vibration. However, noise and sound generally refer to acoustic energy in the atmosphere and vibration refers to acoustic energy in condensed media such as the ground, water and built structures.. High levels of noise are generally considered to be unpleasant and can have health implications. Elevated levels of noise in a neighbourhood are consistent with reduced amenity and would be expected to lead to devaluations in property values. Given the option, people and animals tend to leave areas with high ambient noise levels.. In general, the level of noise emitted from a device or an activity can be controlled.. The legislative thrust, as presented in the Environment Protection Policy (Noise) 2009, is to protect those qualities of the acoustic environment that are conducive to the wellbeing of the community together with its ...
Vocal fold vibration is vital in voice production and the correct pitch of speech. We have developed a high speed functional optical coherence tomography (OCT) system with a center wavelength of 1050 nm and an imaging speed of 100,000 A-lines per second. We imaged the vibration of an ex-vivo swine vocal fold. At an imaging speed of 100 frames per second, we demonstrated high quality vocal fold images during vibration. Functional information, such as vibration frequency and vibration amplitude, was obtained by analyzing the tissue surface during vibration. The axial direction velocity distribution in the cross-sectional images of the vibrating vocal folds was obtained with the Doppler OCT. The quantitative transverse direction velocity distribution in the cross-sectional images was obtained with the Doppler variance images.. ©2011 Optical Society of America. Full Article , PDF Article ...
Three compounds derived from 4-aminoantipyrine (AA) were synthesized and their structures confirmed by melting point, elemental analysis, FT-IR, and 1H-NMR. The molecular structures of the four compounds were characterized by single-crystal X-ray diffraction and calculated by using the density functional theory (DFT) method with 6-31G (d) basis set. The calculated molecular geometries and the vibration frequencies of the AA derivatives in the ground state have been compared with the experimental data. The results show that the optimized geometries can reproduce well the crystal structural parameters, and the theoretical vibration frequencies show good agreement with the experimental data, although the experimental data are different from the theoretical ones due to the intermolecular forces. Besides, the molecular electrostatic potential (MEP) and the frontier molecular orbital (FMO) analysis of the compounds were investigated by theoretical calculations.
The contact surface structure of dry friction damper is complicate, irregular, and self-similar. In this paper, contact surface structure is described with the fractal theory and damping blade is simplified as 2-DOF cantilever beam model with lumped masses. By changing the position of the damper, lacing and shroud structure are separately simulated to study vibration absorption effect of damping blade. The results show that both shroud structure and lacing could not only dissipate energy but also change stiffness of blade. Under the same condition of normal pressure and contact surface, the damping effect of lacing is stronger than that of shroud structure. Meanwhile, the effect on changing blade stiffness of shroud structure is stronger than that of lacing. This paper proposed that there is at least one position of the blade, at which the damper dissipates the most vibration energy during a vibration cycle.
The effects of localized vibration on delayed onset muscle soreness following intense eccentric cycling - Dr. Fredrick Peters - Doctoral Thesis / Dissertation - Physical Therapy / Occupational Therapy - Publish your bachelors or masters thesis, dissertation, term paper or essay
Sum frequency generation (SFG) vibrational spectroscopy was used to investigate the interfacial properties of several amino acids, peptides, and proteins adsorbed at the hydrophilic polystyrene solid-liquid and the hydrophobic silica solid-liquid interfaces. The influence of experimental geometry on the sensitivity and resolution of the SFG vibrational spectroscopy technique was investigated both theoretically and experimentally. SFG was implemented to investigate the adsorption and organization of eight individual amino acids at model hydrophilic and hydrophobic surfaces under physiological conditions. Biointerface studies were conducted using a combination of SFG and quartz crystal microbalance (QCM) comparing the interfacial structure and concentration of two amino acids and their corresponding homopeptides at two model liquid-solid interfaces as a function of their concentration in aqueous solutions. The influence of temperature, concentration, equilibration time, and electrical bias on the extent
Viscous friction occurs between the roller guide shoes and guide rail because of the grease layer.This friction causes to vibration on the cage. This studys aim is an investigation and active control of that vibration for passengers. Initially, the passenger elevators dynamics modeling is carried out by Linear Graph Method. The DC motor and AC motor parameters are used in the system modeling separately. Then, vibrations occurred on the elevator cabin are observed. Finally, the effect of vibrations is reduced with the aid of an active controller. The time and frequency responses are compared for two kinds of the motor. ...
Bacterial diversity analysis of moderately thermophilic microflora enriched by different energy sources In this study, cultures grown from explants of rabbit rib perichondrium were exposed to exogenously added transforming growth factor-beta 1 at concentrations of 0.1-10 ng/ml of media. Correlations with the Short Form-36 were used to investigate the convergent validity. Antioxidant status in ceftin dogs with idiopathic dilated cardiomyopathy. The pathological hallmark of Alexander disease is the inclusion body, known as Rosenthal fiber, within the cell bodies and processes of astrocytes. Although IL-4, IL-5, IL-10, and IL-13 each regulate distinct aspects of the granulomatous inflammatory response, IL-13 was identified as the primary mediator of liver fibrosis. Acute effect of whole body vibration on postural control in congenitally blind subjects: clarithromycin a preliminary evidence. Heterokaryons have been utilized for complementation and dominance testing of mutations that affect ...
0042]The forearm brace 20, as shown in a highly schematic view of FIG. 1, generally comprises three interoperating portions. The first portion is the attachment device 24 which is configured to attach to the power tool 22. In one form, the attachment device 24 can be attached to the power tool 22 without requiring any substantial or permanent modification to the power tool 22. This allows the forearm brace 20 to be positioned upon a variety of power tools. The second portion of the forearm brace 20 is the support arm 26 which extends longitudinally outward from the power tool 22 and is formed as part of, or coupled to, the attachment device 24. The third portion of forearm brace 20 is the forearm engagement surface 28 which is connected to the support arm 26 substantially at the opposite end from the power tool 22 and attachment device 24. The forearm engagement surface 28 may be a rigid device, which can extend transversely outward from one or both transverse sides of the support arm 26. This ...
There are a handful of naturally occurring materials, known as piezoelectric materials, that generate electricity if you bend, stretch or apply another mechanical force to them, and vice versa -- if you apply a voltage across them, theyll deform accordingly. These materials are currently the subject of intense research for their potential applications in energy harvesting, artificial muscles and sensors, among others. These materials are also used in everyday devices, such as loudspeakers, which rely on piezoelectrics to convert electrical signals to mechanical vibrations which create sound waves to produce the desired acoustic signal. Mechanical engineers have now identified one of the thinnest possible piezoelectric materials on the planet -- graphene nitride ...
In 1880, French physicists Pierre Curie, and his elder brother Jacques Curie, discovered the piezoelectric effect in certain crystals. Paul Langevin, a student of Pierre Curie, developed piezoelectric materials, which can generate and receive mechanical vibrations with high frequency (therefore ultrasound). During WWI, ultrasound was introduced in the navy as a means to detect enemy submarines. In the medical field, however, ultrasound was initially used for therapeutic rather than diagnostic purposes. In the late 1920s, Paul Langevin discovered that high power ultrasound could generate heat in bone and disrupt animal tissues. As a result, ultrasound was used to treat patients with Ménière disease, Parkinson disease, and rheumatic arthritis throughout the early 1950s. Diagnostic applications of ultrasound began through the collaboration of physicians and SONAR engineers. In 1942, Karl Dussik, a neuropsychiatrist and his brother, Friederich Dussik, a physicist, described ultrasound as a ...
Efficacy of Whole Body Vibration Training on Pelvic Floor Muscle Strength, Severity of Incontinence and Quality of Life in Females with Urinary Incontinence ...
Biomechanical stimulation (BMS) is a term generally used for localised biomechanical oscillation methods, whereby local muscle groups are stimulated directly or via the associated tendons by means of special hand held mechanical vibration devices. Biomechanical oscillation therapy and training is offered in a variety of areas such as competitive sports,[37] fitness, rehabilitation,[38] medicine,[39] prevention, beauty, and used to improve performance of the muscles and to improve coordination and balance. It is often used in the Myofascial trigger point therapy concept to invoke reciprocal inhibition within the musculoskeletal system. Beneficial effects from this type of stimulation have been found to exist, the efficacy of the BMS Matrix therapy was proven in an independent study.[40] carried out by TÜV-Süd which was commissioned by German health insurer BKK Gesundheit ...
Environment, more than anything, influences what a listener deems to be good music. Music at its bare is simply a chemical reaction; the hairlike cilia of the inner ear convert mechanical vibrations to electro-chemical neuron signals. Many theories of musical organization exist; in fact, a huge literature surrounds the western 12 tone scale. But perhaps it is the dead weight of tradition that holds the piano scale in such esteem. Conventions are probably the greatest barrier to rational inquiry and progress in music. The hearing mechanism is completely and totally aurally neutral, and it is probably only through proper indoctrination that we come to know what we like. There is a noticeable lack of individuality in contemporary music. MTV always seems to sound alike; orchestral performers look ready to fly apart at the seams from the frenzied ceaseless motions. Against this backdrop, it may well be that the prime directive for contemporary musicians is to explore new sounds on new instruments. ...
We discuss spacecraft Doppler tracking for detecting gravitational waves in which Doppler data recorded on the ground are linearly combined with Doppler measurements made on board a spacecraft. By using the four-link radio system first proposed by Vessot and Levine, we derive a new method for removing from the combined data the frequency fluctuations due to the Earth troposphere, ionosphere, and mechanical vibrations of the antenna on the ground ...
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OBJECTIVE: To show that neck proprioceptive input can induce long-term effects on vestibular-dependent self-motion perception. METHODS: Motion perception was assessed by measuring the subjects error in tracking in the dark the remembered position of a fixed target during whole-body yaw asymmetric rotation of a supporting platform, consisting in a fast rightward half-cycle and a slow leftward half-cycle returning the subject to the initial position. Neck muscles were relaxed or voluntarily contracted, and/or vibrated. Whole-body rotation was administered during or at various intervals after the vibration train. The tracking position error (TPE) at the end of the platform rotation was measured during and after the muscle conditioning maneuvers. RESULTS: Neck input produced immediate and sustained changes in the vestibular perceptual response to whole-body rotation. Vibration of the left sterno-cleido-mastoideus (SCM) or right splenius capitis (SC) or isometric neck muscle effort to rotate the ...
TY - JOUR. T1 - Effects of vibratory stimulation on sexual response in women with spinal cord injury. AU - Sipski, Marca L.. AU - Alexander, Craig J.. AU - Gomez-Marin, Orlando. AU - Grossbard, Marissa. AU - Rosen, Raymond. PY - 2005/9. Y1 - 2005/9. N2 - Women with spinal cord injuries (SCIs) have predictable alterations in sexual responses. They commonly have a decreased ability to achieve genital sexual arousal. This study determined whether the use of vibratory stimulation would result in increased genital arousal as measured by vaginal pulse amplitude in women with SCIs. Subjects included 46 women with SCIs and 11 nondisabled control subjects. Results revealed vibratory clitoral stimulation resulted in increased vaginal pulse amplitude as compared with manual clitoral stimulation in both SCI and nondisabled subjects; however, these differences were not statistically significant. Subjective levels of arousal were also compared between SCI and nondisabled control subjects. Both vibratory and ...
Now here is a pair of gaming headphones that you might want to consider, especially since it comes with one feature that most of the other gaming headsets in the market do not - vibration! Well, the company behind this pair of gaming headphones needed to do something really different from what is already available in order to capture the attention of a fickle audience, doesnt it? Hence the $49.99 Rosewill 5.1 Channel Gaming Headset with Vibration, where it is said to offer you a whole lot more bang for your hard earned buck.. The Rosewill 5.1 Channel Gaming Headset with Vibration, as its name suggests will come with 5.1 surround sound capability, complete with vibration and 8 precise speakers. Fret not, your ears will not fall off after a particularly gruelling gaming session, as there will be soft ear-pad cushions that offer an additional level of comfort, while the headset itself boasts of an excellent uni-directional, noise-cancelling microphone. Heck, the included driver CD will even allow ...
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Wind Turbine Vibrations. This is a lumped parameter model of a wind turbine that can be used to study the vibrations that result due to unbalanced rotors. The percentage difference p between the mass moment of inertia of the blade that causes the imbalance and the mass moments of inertia of the other two standard blades is one of the parameters that can be varied. Download a MapleSim model file for Wind Turbine Vibrations. Get the S-Function for Wind Turbine Vibrations
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nothing is at rest; facts which Modern Science endorses, and which each new scientific discovery tends to verify. And yet this Hermetic Principle was enunciated thousands of years ago, by the Masters of Ancient Egypt. This Principle explains that the differences between different manifestations of Matter, Energy, Mind, and even Spirit, result largely from varying rates of Vibration. From THE ALL, which is Pure Spirit, down to the grossest form of Matter, all is in vibration - the higher the vibration, the higher the position in the scale. The vibration of Spirit is at such an infinite rate of intensity and rapidity that it is practically at rest - just as a rapidly moving wheel seems to be motionless. And at the other end of the scale, there are gross forms of matter whose vibrations are so low as to seem at rest. Between these poles, there are millions upon millions of varying degrees of vibration. From corpuscle and electron, atom and molecule, to worlds and universes, everything is in ...
This study investigated the effect of teaching method on objective test scores of students in a school of nursing. The hypothesis stated there was a difference between objective test scores of students who were taught content on diabetes using problem-based learning (PBL) and students taught the sam …
Twenty-three common used Chinese medicinal raw materials were directly determined with Fourier Transform Raman spectroscppy for the first time. Varied chemical components of different medicinal materials lead to different characters in vibration frequency of Raman functional groups. It was found that the vibration frequency variance follows a certain specific regularity. This method is relatively more precise and quicker, and without damage of the sample.