Pm0.1 was neariy the same an the iso-time Pes(iso-time Pes0.1) and esophageal pressure at 100ms after the onset of inspiration (Pes0.1) in group I, but PT0.1 in group II was greater than the iso-time Pes0.1 and Pes0.1
The percentage of leukomonocytes was higher in the high peak inspiratory pressure group than the low peak inspiratory pressure group [(53.0±16.3)%,(47.2±14.9)%,P =0.005],while the percentage of macrophages was lower than the low peak inspiratory pressure group [(28.2±11.0)%,(35.2±12.5)%,P = 0.001].
Results The peak inspiratory pressure(PIP) and ventilation rate(VR) of ventilator parameter were (18.3±1.6)cmH_2O and (35±5)bpm in group Ⅰ,there was significantly lower than that in group Ⅱ and group Ⅲ(P<0.01);
In this study, we have investigated the simulation performance of a novel variable capacity air source heat pump system with suction pressure as its system control signal using artificial neural networks (ANNs). The system performances using R32/R134a and R32/R125/R134a refrigerant mixtures were analyzed. The respective suction pressure was optimized and comparisons with R22 and R407C system were made.
T12V190Z LD is modified and optimized on the basis of the model of 12V190T natural aspiration gas engine. The model introduces advanced turbocharging, intercooling, combustion technology and is verified that it achieves the respected effect and meets technical requirements of product design.
The task of this subject is to develop KM496 turbocharged diesel engine on the base of KM496 natural aspiration type. considering the actual situation of the manufacturer, the development and research is to meet the demand of market and consumers.
ffects of injector nozzle sac volume, injection pressure, injector hole diameter, nozzle hole cone angle, injection timing and airfuel ratio on HC emission from a natural aspiration direct injection diesel engine were experimentally studied.
Introdnces the application on a new type device of floatation machine of no-mechanism mixing up type and short colume microblister aspiration type in Dongqu coal mine preparation plant,through analysing and studying the floatation machine and carry on production technical operation testing on locale in the plant,proves the new type floatation machine can raise obriously the extraction rate of floatation.
Human Inspiratory Muscle Fatigue during Strenuous Resistive Loads under Normoxic and Hypoxic Conditions
A study involving nine healthy males was conducted to determine the developmental rate of inspiratory muscle fatigue during resistive loads under normoxic and hypoxic conditions.
The subjects aged 19 to 38 years performed a bicycle exercise test of increasing power during an exhaustive inspiratory-expiratory resistive load of 40 cm water column/l s-1 inhaling air or oxygen.
The limitation of the physical working capacity of a healthy individual during an exhaustive resistive load is considered to be linked to inspiratory muscle fatigue developing at an equal rate under both normoxic and hyperoxic conditions.
The length of expiratory VHEB was found to depend on the residual lung volume, whereas inspiratory VHEB correlated with the functional residual lung capacity.
The static pressure distribution along the span in the pressure surface of a high pressure turbine stator is more uniform than that in the suction surface.
The static pressure distributions along the span in the pressure surfaces and the suction surfaces of a high pressure turbine rotor and a low pressure turbine rotor are all uneven.
It is demonstrated that the soil-water interaction induced by seasonal wetting-drying cycles is very complex, and it involves coupled effects among the changes in water content, suction, stress, deformation and shear strength.
The mechanical properties of unsaturated soils are a function of the saturation degree or matric suction, and can be obtained based on currently available procedures.
Heat and mass transfer near the stagnation point with injection and suction of various gases through the body surface