نتایج جستجو برای: vibration duration

تعداد نتایج: 253828  

2012
Sarah L. Manske Craig A. Good Ronald F. Zernicke Steven K. Boyd

High-frequency, low-magnitude vibration enhances bone formation ostensibly by mimicking normal postural muscle activity. We tested this hypothesis by examining whether daily exposure to low-magnitude vibration (VIB) would maintain bone in a muscle disuse model with botulinum toxin type A (BTX). Female 16-18 wk old BALB/c mice (N = 36) were assigned to BTX-VIB, BTX-SHAM, VIB, or SHAM. BTX mice w...

Journal: :Occupational and environmental medicine 2003
L Barregard L Ehrenström K Marcus

AIMS To assess the occurrence of hand-arm vibration syndrome (HAVS) in Swedish car mechanics, and the relation between HAVS and duration of exposure. METHODS A total of 806 mechanics answered a questionnaire on vascular and neurological symptoms, and exposure to vibrations. Mechanics with symptoms, and some mechanics without symptoms, were invited to a clinical examination, including also a t...

2014
Halil İbrahim Kılınç Bülent Kesim Hasan Önder Gümüş Mehmet Dinçel Selçuk Erkaya

PURPOSE This study was to evaluate the effect of grinding of the inner metal surface during the porcelain try-in stage on metal-porcelain bonding considering the maximum temperature and the vibration of samples. MATERIALS AND METHODS Ninety-one square prism-shaped (1 × 1 × 1.5 mm) nickel-chrome cast frameworks 0.3 mm thick were prepared. Porcelain was applied on two opposite outer axial surfa...

ژورنال: مواد پرانرژی 2014

Solid propellant burning rate is highly dependent on the pressure, so that the combustion duration propellant rocket engines, combustion vibration leads to considerable changes in pressure. This could lead to an explosion in rocket engines. The best case is propellant combustion independent of pressure. Ballistic modifiers added to propellant formulation for reduce pressure sensitivity and re...

2010
Jeffrey G. Manni John D. Hybl Darren Rand Daniel J. Ripin Juan R. Ochoa

This work describes a cryogenic, electro-optically -switched Yb:YAG laser that generates 114-W average TEM power with 47% optical-to-optical efficiency. Pulse repetition frequency is 5 kHz, pulse duration is 16 ns full-width at half-maximum, and is less than 1.05.

2010
Jeffrey G. Manni John D. Hybl Darren Rand Daniel J. Ripin Juan R. Ochoa

This work describes a cryogenic, electro-optically -switched Yb:YAG laser that generates 114-W average TEM power with 47% optical-to-optical efficiency. Pulse repetition frequency is 5 kHz, pulse duration is 16 ns full-width at half-maximum, and is less than 1.05.

2017
Christophe Prigent Emily Lamour Jean-Pierre Rozet Dominique Vernhet Cornelia Deiss Joachim Burgdörfer

2009
Svetlana A. Malinovskaya

We propose a new method for creating an optimal coherence in a two-level system (TLS) based on adiabatic following. Optimal coherence is achieved by choosing the time-dependent phase of the pulse that provides vanishing field-TLS detuning dðtÞ at central time when the pulse amplitude reaches maximum. For example, dðtÞ 1⁄4 d0ð1 expððt t0Þ=s0ÞÞ for t 6 t0 and d 1⁄4 0 for t > t0. The pulse envelop...

2015
Neerja Puri

There are various types of lasers available for hair reduction, but the choice of an ideal laser for ethnic skin has its own limitations. The choice of the right laser for the right skin type is very important. Before starting with the laser therapy, it is important to assess the skin type, the fluence, the pulse duration and the type of laser to be used.

Journal: :Diabetes Care 2009
Lars Kärvestedt Eva Mårtensson Valdemar Grill Stig Elofsson Gunvor von Wendt Anders Hamsten Kerstin Brismar

OBJECTIVE To assess associations between peripheral sensory neuropathy (PSN) and other diabetes-related complications. RESEARCH DESIGN AND METHOD In an area-based cohort of type 2 diabetic subjects, we investigated 156 subjects (age 61.7 +/- 7.2 years and diabetes duration 7.0 +/- 5.7 years) by questionnaires, clinical examinations, blood and urine sampling, and review of medical records. R...

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