attenuation

The attenuation coefficient of each voxel is the product of its unknown density and a known energy-dependent mass attenuation coefficient.

"Gripping any phone will result in some attenuation of its antenna performance, depending on the placement of the antennas, " he said.

However , it is not trivially easy to use this property for the attenuation of the detected surface- waves .

Signal attenuation in the power line environment is often great, and unpredictable.

Meanwhile the attenuation degree of both samples was greater, while that of other samples was decreased .

And with most antennas, the density and composition of the human hand can cause attenuation to a greater degree than some other materials.

We also investigate the relationship between the total attenuation coefficient and the energy density, pulse duration, and pulse repetition.

the far-end crosstalk attenuation and the inductance of the signal transmission wire pair of the cable are far below the industry standard.

The invention relates to a rubber piezoceramics damping vibration attenuation material and a preparation method thereof.

The invention relates to a projection system for producing attenuation components of projection data of a region of interest.

The information gained is then used for evaluating three remedial actions, namely, natural attenuation, dredging and capping.

Diltiazem can produce a greater attenuation on the circulatory responses to tracheal extubation.

Note: The position of these ground locators can be adjusted later to tweak the falloff of the shadow attenuation.

Absorption coefficient is measure of the attenuation caused by absorption of energy that results from its passage through a medium.

The image generated is a result of attenuation of the beam by all structures along the path of the beam and results in a gray-scale picture.

In this procedure, the total attenuation coefficient decreases when the light dose increases and the reduction depends on the light dose.

However, the fog is one of the important factors forming atmospheric attenuation and light intensity fluctuation.

The point of skull opening is seen here, and low attenuation air pockets normally introduced during surgery here.

Attenuation Constant For a particular propagation mode in an optical fiber, the real part of the axial propagation constant.

For a given incident frequency, there exists an optimal electron density and collision frequency to reach the best attenuation effect.

The kind of windows has advantages of simple structure, lower attenuation and good inhibition of spectral leakage.

It is necessary to estimate attenuation models and to compensate amplitude loss as well as dispersion by an inverse Q-filtering.

The results show that the system improved the VGA signal attenuation and distortion, achieved high-quality, long-distance transmission.

And the aforementioned serial, parallel resonant circuit of a narrow pass band and steep attenuation characteristics is not enough.

The attenuation in the sedimentary rock exceeds that of igneous rock.

The theory of noise attenuation by patterns is the same whether applied to the shot or the geophone end of the wave trajectory.

Attenuation Equalizer Any device inserted in a transmission line or amplifier circuit to improve the shape of its frequency response .

The change of the relationship between the laser attenuation and soot concentrations within a particular detection range has been given.

Attenuation is the result of two processes: scattering and absorption.

The application of the external magnetic field can enhance the attenuation band of the electromagnetic wave to a certain extent.

The observational ability and attenuation characteristics of a millimeter-wavelength radar are introduced in this article.

Therefore, multiple attenuation is one of the critical steps in marine data processing.

The optimum design of detector arrays for the attenuation of surface waves and of ambient noise is a complex subject.

Hardly had the attenuation of rheumatic pains occurs when the doctor instructed the patient to stop medication.

The effects of load in certain range were to restrain the swelling-shrinkage deformation and the attenuation of shear strength.

Methods An ARM embedded system was used to measure the speed of ultrasound, the broadband ultrasound attenuation(BUA) and the stiffness.

Testing of laser, optical attenuation of the system without distortion, no lens aberrations.

These features should be noted: size, shape, echogenicity, margin features, orientation, and attenuation (eg, shadowing or enhancement).

Then, an analysis of filtering strategy effect led to the norm condition of optimal H-infinity filtering disturbances attenuation gene.

Meanwhile, the existence of the acoustic attenuation coefficient benefits the axial resolution.

Attenuation correction in positron emission tomography (PET) is an essential part of clinical and research studies.

Audience : In the 1918 flu I understand that they theorized that there was some attenuation of the virus when it made the leap into humans .

This paper formulates the active suspension control problem as a disturbance attenuation problem with time-domain hard constraints.

Analysis attenuation law of the skid resistance and predicate service life by accelerated test.

Therefore, the fog attenuation can be regarded as a multiplicative interference channel of Gauss distribution.

The essential feature of the seismic wave propagation in viscous-elastic media is the attenuation of its energy.

Attenuation when the first land-arc wire feed speed, followed by an immediate cessation of land-arc wire feed.

The invention relates to a noise attenuation for an internal combustion engine.

A model for the number of QW SOAs in series with variable optical attenuation is developed and matched to the experimental data.

Velocity was lower than that of free air, and there was marked frequency-dependent attenuation and velocity dispersion.

In determining the attenuation for an areal array we must specify the direction of the wave travel.

A properly designed areal pattern should yield adequate attenuation regardless of the direction in which the noise approaches.

The temperature and velocity of the engine exhaust gas have significant influences on the acoustic attenuation performance of mufflers.

The attenuation relation between both peak ground velocity and acceleration with distance was also derived from the measured data.

The attenuation spectrum of ultrasonic waves through the slurry may provide the information about particle size distribution.

The variation of sediment concentration with time was the attenuation trend of half sine wave.

Dispersion and attenuation characteristics of torsional modes of ultrasonic guided wave in pipe with viscoelastic coating are investigated.

Using Genetic Algorithm to calculate the attenuation formula, get the best proportion of the component content.

second , the problems of long - distance data communication , signal attenuation , interference from outside in the measurement system.

A pattern generating section forms two patterns based on a pattern size, an embedding strength, and a pattern attenuation ratio.

Increasing the eddy-current losses will not change the frequency of attenuation peak, but will increase the intensity of attenuation.

The authors have proposed the correction algorithm of the attenuation of radial doses due to inserting wedge.

At first glance, the fluid attenuation of these lymph nodes could be mistaken for enlarged fluid filled small bowel loops.

This paper analyzes on the reasons of the attenuation of the stream runoff, and makes rough quantitative calculation of the attenuation.

The present invention relates to a production technology for vibration attenuation composite steel plate.

By the way of calculation, we select the lowest attenuation optical fiber as the transmission medium.

The corrections for neutron flux attenuation , multiple scattering and finite angle resolution are performed using Monte - Carlo method .

Finally, the customer requests the test method principle the attenuation, the technical outstanding person standard appearance.

The linchpin of undertaking high temperature ultrasonic testing is the control of the coupling, attenuation and route of the sound.

Feedback in Linear Networks. Eigenmode Analysis, Amplification and Attenuation, Gain-bandwidth Theorem.

We therefore argue for inclusion of geophysical investigations as part of natural attenuation assessment programs.

The noise attenuation characteristics of air cleaner in a passenger car are analyzed using finite element method.

For a certain degree of attenuation nature demands a certain minimum time.

Methods: To observe and compare the rabbit sciatic nerve-trunk action potential conduction velocity and transmission attenuation time.

The amplitude and attenuation of L wave can be used to discriminate and evaluate defects.

Results of attenuation at room temperature have been compared with quartz transducer technique.

Feature: good insulativity and shielding effectiveness to reduce attenuation, complying with RoHS standard.

The utility model has simple operation, system sealing ring controlling, high reliability and high attenuation preciseness.

For the earth attenuation, time-frequency analysis of energy compensation technology has been presented.

Objective To discuss whether ultrasonic attenuation dual calibration quantitative analysis may acquire highly repeatable checkout results.

The dynamic responses of the swing valve-shock wave attenuation system subjected blast loads was investigated in this paper.

The experimental date is fitted by least square method and by derivation the velocity attenuation curve of the shock wave is got.

Some (Apple included) have pointed out that all phones suffer some signal attenuation when held near the antenna.

Clutch material after heat treatment, sturdiness and durability, and torque with low attenuation, high stability, long using life.

We briefly describe the measurement and calculation method of broadband ultrasonic attenuation and show a typical measurement results.

Stable isotope technique is a new, innovative approach to assess the source and natural attenuation of organic pollutants in environment.

Attenuation of seismic waves between such surfaces can be similarly diagnostic.

The advantages and shortcomings of the three methods for the prediction of silencer acoustic attenuation performance are discussed.

The attenuation of being grants philosophy, the spiritual essence of times, the mission of supporting people's life in the world.

The Earth's absorption and attenuation effect is one of the most important factor that affects the resolution of seismic survey.

It features excellent attenuation abilities and therefore provides optimal hearing protection for its users.

The adaptive law was obtained from similarity PID parameters determined by the attenuation curve method.

the leaky mode wave is a kind of geometric attenuation wave and attenuates fast with strong dispersion as well.

Then the relation between factors affecting attenuation of POF and temperature is analyzed to approve our conclusion in theory.

A hyperbolic attenuation function was introduced to reflect the effect of one firm's default to its partner.

The optical signal attenuation caused by fog has a great influence on the performance of the atmospheric laser communication system.

When the vibration absorber is fixed to a flexible base, the base will affect its vibration attenuation effect.

The sum of the absorption coefficient and the scattering coefficient is the attenuation coefficient.

Shunning steps of the section in the transmission line is needed to avoid the echo and attenuation of the wave.

This value controls the degree of intensity attenuation by the filter at its point of maximum density.

Objective Observe Kangai fuzheng tablets'chemotherapy synergy and attenuation effect after malignant tumor patients'radiation.

Ultrasonic study of UO2: effects of porosity and grain size on ultrasonic attenuation and velocities.

Ultrasonic attenuation technique is used to investigate a method to measure mass concentration of paper fibers in dilute pulp suspensions.

The results well agree with data obtained from the noise attenuation performance test of the exhaust muffler.

Nonlinear absorption and attenuation of electromagnetic plane wave in plasma are investigated.

Although radiographs provide higher spatial resolution, CT can detect more subtle variations in attenuation of X-rays.

In any case, always short wavelength signal attenuation by this process, enhanced long-wavelength signal.

Correction to "radar attenuation by sand: laboratory measurements of radar transmission"

It is suggested that under certain condition, the dynamic response is weakened effectively by increasing the thickness of attenuation layer.

A great progress has been made in research on seismic attenuation over fifty years of development.

The ratio of UV to the global radiation is higher in summer than in winter, and the attenuation is not synchronous in cloudy days.

In seismic data processing, free surface multiples attenuation is important in multiples attenuation.

The extinction characters of fog particles can cause the attenuation of visible and infrared light transmission.

By using the propagating theory of elastic wave the attenuation mechanisms of the elastomer with cylindrical bores is analyzed.

The attenuation of neutrons from a nuclear explosion involves several different phenomena.

NH 4N showed piston shape transportation in soil, and its attenuation had no obvious relation to microbes growth in short term.

the composite controller is effective in motion tracking and vibration attenuation control, and the tracking accuracy of PF is best too.

Antenna signal attenuation due the combined effect will be better, slightly lower degree of stereo separation.

Broadband ultrasound attenuation(BUA) reflects the degree of bone mineral density.

The influence and influence mechanism of heat aging on the attenuation of PMMA polymer optical fiber (POF) were studied.

Ferromagnetic resonance frequency change might lead to signal attenuation peak frequency corresponding change.

The liquor density influences the muzzle velocity and the attenuation of spray droplets' locomotion velocity.

Actual application shows that the method is effective in multiples attenuation.

Therefore, the difference of inclusions inside sea ice will result in different PAR, and impact the attenuation of PAR.

The armed forces to generals as coach, coach 's attenuation, and his army will lose the battle force.

The study of attenuation of ultrasound provides reference for the study of damage relieving depth of ultrasound.

The peak pressure attenuation of shock in water in borehole axis direction was slower than the direction vertical to the borehole axis.

The flux of membrane is less affected by initial pressure and the low-voltage operation is beneficial to easing the flux attenuation.

Air-fluid level in the left maxillary sinus (red arrow) containing high attenuation is consistent with hematoma.

The analytical solution of roadway discharge is given, under the condition of rock permeability attenuation with mining depth increase.

The impacts of these physical factors, such as excess attenuation, wind and turbulence etc on the echo measurements are discussed.

It is shown that, the reflection and attenuation are influenced greatly by various plasma parameters and the magnetic field.

The panels are lightweight and environmentally sound (they are totally recyclable) and provide some noise attenuation.

If attenuation weakens the light signal at the receiver, then data errors will result.

The velocity and attenuation coefficient were measured in the under water acoustic laboratory.

CT attenuation values of tumor and normal pancreas in all scanning phase were obtained and the tumor-pancreas contrast was calculated.

Experimental control group showed that the natural attenuation of ozone, The NAI removal efficiency of ozone only 9%.

The main factors influencing on slant path rain attenuation are summarized.

Railway applications - Track - Test methods for fastening systems - Part 3 : determination of attenuation of impact loads.

Based on the mechanism of rain attenuation, the special attenuation by rain is calculated by the equivalent dielectric permittivity model.

However, the actual source code in the transmission channel, subject to noise and attenuation, there will be errors.

The effect of the acoustic attenuation coefficient of the media on the actual axial resolution have also been discussed.

It is characterized by good frequency selectivity, low insertion loss and high attenuation of specified frequency.

Real data results show that it has a good result in noise attenuation based on orthogonal subset.

Yet some form of attenuation is mandatory .

The attenuation factor, is determined by the biodegradation rate and time.

Quality factor is a parameter which describes the energy attenuation about seismic wave.

Aerospace series - Cables, electrical, aircraft use - Test methods - Part 806 : attenuation.

Using the system we measured the attenuation processe of laser plasma shock wave and got better experimental results.

A greater attenuation of applied signals of equal dynamic force occurs as frequency increases.

Filter is a useful signal can pass while the frequency of the unwanted signal suppression (or attenuation) of the electronic devices.

Using the experimental data obtained in Beijing, the characteristics of slant path rain attenuation in Beijing area are analysed.

Finally, the L2-disturbance attenuation control of port-controlled time-delay Hamiltonian systems are discussed.

For the same mode in bolt, its attenuation and velocity vary greatly with frequency range.

The effect of coating thick, stress relaxation, heat treatment and radiation on attenuation of optical fiber are described.

The attenuation coefficient decreases with increasing of frequency and the gas density.

Stranded wire is more common than solid wire and is more flexible, but solid wire has less attenuation.

The results show that the excess attenuation of acoustic wave is mainly caused by the velocity fluctuation.

Aerospace series - Fibres and cables, optical, aircraft use - Test methods - Part 301 : attenuation.

TDK experiments in panels, to achieve a spectral attenuation algorithms.

The attenuation weak spot is the black strip in the lower left corner of the band.

Determine the attenuation within the material C.

This fit isolates the user from their environment, offering passive noise attenuation and the best sound experience.

Methods of measurement for waveguides. Part 4 : attenuation of waveguide and waveguide assemblies.

Two color pyrometers were developed to solve the problem of signal attenuation by intervening smoke or fumes.

Bandwidth Bandpass The range of frequencies that a channel will transmit (i. E. Pass through) without excessive attenuation.

The other mechanism may be related to the attenuation of spatial learning and memory in CPP mice.

In the second part, we study noise attenuation of signal using wavelet analysis and nonparametric analysis.

Attenuation values are ignored for directional lights.

Therefore, there is a perfect compromise between attenuation in stopband and group delay or loss variation in passband.

On the Earth-space path, the atmospheric attenuation characteristic is researched in the Xi'an area.

and the whole current waveform presents a controllable attenuation trend.

This method is effective to control muffler attenuation of the muffler structure which is Axis symmetry.

Anechoic chambers. Part 2 : alternative test site suitability with respect to site attenuation.

Based on these, corresponding modification measures are taken with good noise attenuation effects achieved.

The attenuation constant causing by radiation is obtained.

The attenuation peaks of saturated rocks vary with the viscosity of fluid.

time averaged steady phase and time averaged attenuation phase.

For non-directional lights, all three attenuation values should not be set to 0. 0 Simultaneously.

simultaneously the sympathetic vibration generated when the sawblade is used can be prevented so as to have the effect of sound attenuation.

Communication cables - Specifications for test methods - Part 1-8 : electrical test methods - Attenuation.

This page will explain how cables are tested for crosstalk and attenuation.

Express the factors resulting in the attenuation of acoustic waves.

Preliminary study on attenuation of infrared ray in rubber latex .

The weak trend community taked special community, Their right receives the attenuation.

Ground-glass attenuation (hemorrhage or exudates ) was found in 6 cases and often coincided with other CT signs.

PID parameter tuning is performed based on attenuation curve to achieve the best control state.

We analyze energy attenuation character of UWB in free space and other dielectric objects.

There is an extremely limitation for optic signal transmission in the systems because of attenuation, chromatic dispersion and crosstalk.

A brief review is given in this paper for sound attenuation in turbid water.

The result showed that there is a turn point on the ultrasonic attenuation curve.

Louis Pasteur discovered the method for the attenuation of virulent microorganisms that is the basis of vaccination.

Based on 266 strong ground motion records, an attenuation relationship was developed for both absolute and relative input energy spectra.

The data, based on differential X-ray attenuation, are analogous to those otherwise obtainable only by serial sectioning.

VMAC? Voice Mobile Attenuation Code?

Ultrasonic has a good pointing, the attenuation in water is small, beam radio feature fine.

Then, the effect of change of sensors' positions on attenuation of noise is also investigated.

CT confirmed a large low attenuation right hepatic tumor.

Posterior acoustic attenuation 82 cases.

The strength attenuation induced by creep mainly results in cohesion reduction, and 77. 63%.

This new algorithm can construct new windows with faster side lobe attenuation in order to reduce harmonic leakage error.

The attenuation effect of aluminum foam is more obvious than that of rubber material.

For non-directional lights, avoid setting all three attenuation values to 0. 0 Simultaneously.

If there is no attenuation the line will be flat.

But CIC filter also has disadvantages, such as serious droop in the passband and insufficient attenuation in the folding band.

the radial power distribution of underwater laser will be consistent at 2~3 attenuation lengths.

amplifier inputs must have a differential impedance that is as high as possible to avoid signal attenuation.

By applying the suitable raindrop-size distribution model, we can calculate the rain attenuation more accurately.

This method not only could be adapted to compensate the attenuation of amplitude but also to remove dispersion.

This is the slope of the attenuation against frequency in some part of the frequency range 200-1000 kHz.

X10 probe : attenuation of 10: 1, input impedance 10 Mohm when used with a scope of 1 Mohm input impedance, input capacitance around 13pF.

During the tropical cyclone period the wind is strong, and the vertical attenuation of the current speed is weak;

Attenuation law of energy equivalent velocity spectra and its application in scenario earthquake

The Attenuation and Reignition of a Gaseous Detonation Propagating Through a Perforated Steel Plate Section

Determination of the Attenuation Coefficient of Surface Acoustic Wave by Means of the Light Interference

Study on residual chlorine attenuation law of water in containers made of different materials

Experimental investigation on the properties of a rubber hose and its effect on vibration attenuation of piping system

Study of Attenuation Characteristics of the Central and Eastern Tianshan, Xinjiang Using Digital Seismic Waves

Preliminary Exploration of the Velocity Attenuation Equation Form of Blast Vibration

Metallic powder; determination of particle size distribution by gravitational sedimentation in a liquid and attenuation measurement

Integrated optics - Parameters relevant to coupling properties, attenuation - Terms, preferred dimensions, tolerance and attenuation classes

The Experimental Study of Strength Attenuation of Gaseous Detonation Wave Through Acoustic Absorbing Walled Channel

The simultaneity of same velocity and higher attenuation can be used to detect insulation delamination from conductors;

Comparison of Light Attenuation Characteristics and Optical Penetration Depths between Native and Coagulated Human Liver Tissues

Time-Frequency Energy Attenuation Factor and Its Application on the Basis of Gauss Linear Modulation Frequency Continuous Wavelet Transform

Attenuation relations for acceleration peak and response spectrum of horizontal earthquake motions in Chongqing and its adjacent region

Delay-dependent robust disturbance attenuation for a class of time-delay systems with nonlinear uncertainties

Theoretical investigation of vibration attenuation mechanism of a adaptive squeeze film damper

Railway applications - Track - Performance requirements for fastening systems - Special fastening systems for attenuation of vibration

Attenuation of the Plate Flexural Wave Transmission Through a Vibration Isolation Mass

Numerical Calculation and Analysis of Acoustic Attenuation Performance and Flow Resistance Characteristics of Concentric Reactive Silencers

Theory analysis and experimental study of the spread and attenuation of acoustic emission in rock body

Attenuation Law of Ground Vibration Induced by Vibratory Road Rollers and its Control

The Calculation Model of the Microwave Propagation Attenuation by Rainfall and the Analysis of its Characteristic

Measurement of Attenuation with Airborne and Ground-Based Radar in Convective Storms over Land and Its Microphysical Implications

A parametric approach of the roll channel disturbance attenuation controller design for a high-speed reentry missile

Vibration Attenuation Mechanism Investigation of a Adaptive Squeeze Film Damper

Genetic engineering attenuation of Salmonella and its application as a DNA vaccine vector

The Discussions About Attenuation Effect of a Practical Calculating Scheme of Random Optimization

Standard Test Method for Measuring Shock-Attenuation Characteristics of Natural Playing Surface Systems Using Lightweight Portable Apparatus

Speciality of Light Intensity Attenuation in Chaetoceros sp. And Applications of Culture in Photobioreactor

Analysis of attenuation characteristics of residual ultrasonic waves in container wall and its application

Experiment study on attenuation law of residual chlorine in cooling water discharged from thermal power plants

Safety of power transformers, power supply units and similar - Particular requirements for perturbation attenuation transformers

Estimation of natural attenuation rate of chlorinate solvents contamination in shallow groundwater

Simultaneous inversion of site response, source parameters, geometrical attenuation factors and inelastic coefficient of medium

Depolarization, Scattering, and Attenuation of Circularly Polarized Radio Waves by Spherically Asymmetric Melting Ice Particles

An experimental study of influence of water saturation on velocity and attenuation in sandstone under stratum conditions

Elements of electrical and optical connection - Test methods - Optical elements - Variation of attenuation and optical discontinuity

Attenuation of telomerase activity by a hammerhead ribozyme targeting the template region of telomerase RNA in ovarian carcinoma cell