The data shows that R2Hz-4Hz-R5Hz-7Hz is the sensitive index of frequency dependence of respiratory effective resistance and appears to be a new test for detecting early small airway diseases.

Mean Values of the respiratory effective resistance at 3Hz increase markedly with degrees of seriousness of bronchitis and emphysema ( P<0.01) while mean values at 5Hz and 7Hz are not significantly different for them ( P>0.05).

Measures respiratory effective resistance at 2 to 7Hz with the forced oscillation technique in normal nonsmokers, asymptomatic smokers and patients with chronic obstructive pulmonary diseases.

On the basis of one-dimensional stationary shock theory and perfect "effective gas" model, the effective drag coefficients are determinated experimentally by pressures of relaxation zone.

We obtained a mathematical relationship between effective resistant coefficient Cf and Re of liquid in the channels by minimum double multiplication,and we also study changes of macrocosmic pressure in channels with the different filtration quantity.

These data show the respiratory effactive resistance at low frequency as 3Hz can indicate the degrees of seriousness of chronic obstructive pulmonary diseases.

The difference of the respiratory system effectiv mesistance between the normal group and the resistance-increased group, aeasured by cither F- Z 2 device or time constant technique ( TCT), is rlso very significant in statistics ( p<0.0005 ).

As the temperature is lowered, the measured effective resistance decreases for lel ? L1, 2 and increases in a certain temperature region in which lel ～ L1, 2.

Effect of virulence genes complementary to the effective resistance genes in sorghum on fitness of the greenbug, Schizaphis gram

A new method was proposed to directly measure the effective resistance and distinguish the porous frequency in the regenerator of the microminiature thermoacoustic refrigerator.

The key element to effective resistance training is supervision by a qualified professional and the proper prescription of the program variables.

in order to find the genuine reason leading to effective resistance response of tree to insects attacking.

The level of resistance is similar to that in rye cultivar, South Australian, but higher than that in the wheat line (AUS 10894), hitherto reported to have useful resistance to the Australian pathotype.

Systematic screening of germplasm collections at international research centres and other national research programmes have identified useful resistance sources that have been used successfully to breed resistant or tolerant cultivars.

The results suggest the existence of potentially useful resistance mechanisms against the vector.

tauschii, accession RL5271 may be a useful resistance source for use in a bread wheat breeding program.

Electro showed some useful resistance to root rot caused by R.

The free-stream nonuniformity generated by the source leads to effective drag reduction.

Drag reduction tests showed that by adding 10% (mol) of C12, the effective drag reduction range expanded to 4-120?°C, compared with 80-130?°C with only the C22 surfactant.

The lower and upper effective drag reduction temperature limits, viscoelasticity, and stress-induced precipitation temperature increased with alkyl chain length.

From the results, it is found that the surfactant addition causes effective drag reduction in a pipe flow when the hydrate fraction becomes high, while effective drag reduction disappears in the cases of low hydrate fraction.

Based on sensitivity studies with the flux-averaging scheme, a simple formula for the effective drag coefficient above the Arctic MIZ is derived.

Measures respiratory effective resistance at 2 to 7Hz with the forced oscillation technique in normal nonsmokers, asymptomatic smokers and patients with chronic obstructive pulmonary diseases. The data shows that R2Hz-4Hz-R5Hz-7Hz is the sensitive index of frequency dependence of respiratory effective resistance and appears to be a new test for detecting early small airway diseases. This study also analyses the relationship between frequency dependence of Rth and parameters of the forced expiratory vital capacity...

Measures respiratory effective resistance at 2 to 7Hz with the forced oscillation technique in normal nonsmokers, asymptomatic smokers and patients with chronic obstructive pulmonary diseases. The data shows that R2Hz-4Hz-R5Hz-7Hz is the sensitive index of frequency dependence of respiratory effective resistance and appears to be a new test for detecting early small airway diseases. This study also analyses the relationship between frequency dependence of Rth and parameters of the forced expiratory vital capacity curve and of the maximal expiratory flow volume curve.

Respiratory effective resistance and compliance are measureed by the forced oscillation technique in 75 patients with chronic obstructive pulmonary diseases. Mean Values of the respiratory effective resistance at 3Hz increase markedly with degrees of seriousness of bronchitis and emphysema ( P<0.01) while mean values at 5Hz and 7Hz are not significantly different for them ( P>0.05). These data show the respiratory effactive resistance at low frequency as 3Hz can indicate the degrees of seriousness of chronic...

Respiratory effective resistance and compliance are measureed by the forced oscillation technique in 75 patients with chronic obstructive pulmonary diseases. Mean Values of the respiratory effective resistance at 3Hz increase markedly with degrees of seriousness of bronchitis and emphysema ( P<0.01) while mean values at 5Hz and 7Hz are not significantly different for them ( P>0.05). These data show the respiratory effactive resistance at low frequency as 3Hz can indicate the degrees of seriousness of chronic obstructive pulmonary diseases.

The pressures in the relaxation zone behind a shock front for gas-particle flow were measured in the vertical shock tube with a system of injecting and collecting particles.On the basis of one-dimensional stationary shock theory and perfect "effective gas" model, the effective drag coefficients are determinated experimentally by pressures of relaxation zone.The silicagel particles were used in experiments. Their uniformity is very good, and the average particle diameters were 44 μm. and 40 μm. The obtained correlations...

The pressures in the relaxation zone behind a shock front for gas-particle flow were measured in the vertical shock tube with a system of injecting and collecting particles.On the basis of one-dimensional stationary shock theory and perfect "effective gas" model, the effective drag coefficients are determinated experimentally by pressures of relaxation zone.The silicagel particles were used in experiments. Their uniformity is very good, and the average particle diameters were 44 μm. and 40 μm. The obtained correlations of drag coefficient and Reynolds number in the gas-particle flow by experiments agree well with Rudinger's results Cd = 6000/Re1.7. The correlation is independent of the particle loading ratios within the range of experiments.