311results about How to "Reduce ventilation" patented technology

Techniques are provided for treating periodic breathing, such as Cheyne-Stokes Respiration, using an implantable medical system. In one technique, diaphragmatic stimulation is delivered during a hyperpnea phase of periodic breathing via electrical stimulation of the phrenic nerves. Diaphragmatic stimulation is synchronized with intrinsic inspiration so as to increase the amplitude of diaphragmatic contraction during inspiration. This tends to decrease intrathoracic pressure leading to occlusion of the respiratory airway. Occlusion reduces actual ventilation during hyperpnea, thus reducing the cyclic blood chemistry imbalance that sustains periodic breathing so as to either mitigate periodic breathing or eliminate it completely. In another technique, respiration is instead inhibited during the hyperpnea phase of periodic breathing by blocking phrenic nerve signals to the extent necessary to reduce ventilation to terminate periodic breathing or at least mitigate its severity. Techniques are also described for controlling the type of therapy applied in response to periodic breathing.

Lung conditions are treated by implanting a flow restrictor in a passageway upstream from a diseased lung segment. The restrictor will create an orifice at the implantation site which inhibits air exchange with the segment to induce controlled atelectasis and/or hypoxia. Controlled atelectasis can induce collapse of the diseased segment with a reduced risk of pneumothorax. Hypoxia can promote gas exchange with non-isolated, healthy regions of the lung even in the absence of lung collapse.

The invention provides an air conditioning device which can maintain indoor air environment and save energy with good effect even when the air-exchange amount is small. The air conditioning device is used for discharging carbon dioxide from the indoor. The air conditioning device is set in that the return air from a room (6) is cooled through an evaporator (10) of a heat pump cycle system; the cooled air passes through the adsorption zone (3) of a honeycomb type rotor (1) having the function of carbon dioxide absorption; outer air (OA) whose temperature increases by passing through a condenser (14) of the heat pump cycle system passes through a desorption zone (4) of the honeycomb type rotor (1). In this case, carbon dioxide contained in the air in the room (6) can be adsorbed to the honeycomb type rotor (1) and be discharged to the outside, thereby the internal environment of the room (6) can be maintained even the air exchange is in small amount.

An air-conditioning register includes a register panel, and a cylinder-shaped retainer. The register panel is disposed in a vehicle passenger room, and has an outlet opening for air-conditioning air. The retainer demarcates a ventilation passage communicated with the outlet opening of the register panel, and has an inner opposite end and a register-panel-side opposite end. The register-panel-side opposite end of the retainer includes at least one member selected from the group consisting of a top-surface wall, a bottom-surface wall and paired side-surface walls, which demarcates a surface of the ventilation passage, and which is disposed movably so as to make the surface movable between diminishing the ventilation passage and enlarging the ventilation passage adjacent to the outlet opening of the register panel.

A cooling apparatus of a work machine which facilitates maintenance such as cleaning, check and remedy of cooling equipments such as a radiator, an oil cooler and an after cooler is provided. A frame which forms an opening portion on a ventilation passage is provided on an upper stream side of a fan, and a radiator and an oil cooler or a radiator and an oil cooler and an after cooler are arranged in parallel at the opening portion of the frame. At least one of the radiator and the oil cooler or at least one of the radiator and the oil cooler and the after cooler is mounted to the frame detachably. A fan shroud is mounted to the frame. A part of the fan shroud may be detachable.

Apparatus and methods for non-invasively determining cardiac output using partial re-breathing techniques are disclosed in which the apparatus is constructed with an instantaneously adjustable deadspace for accommodating differences in breathing capacities of various patients. The apparatus is constructed of inexpensive elements, including a single two-way valve which renders the apparatus very simple to use and inexpensive so that the unit may be readily disposable. The method of the invention provides a novel means of estimating cardiac output based on alveolar CO₂ values rather than end-tidal CO₂ values as previously practiced. A program for calculating cardiac output is also disclosed.

An air-cooled fuel cell-powered motorcycle allowing early detection of a malfunction in a fuel cell stack. The fuel cell-powered motorcycle includes a vehicle body; an electric motor for driving a driving wheel, an air-cooled fuel cell for supplying electric power to the electric motor and a hydrogen tank for storing a fuel gas supplied to the fuel cell, respectively housed in the vehicle body; a fan for supplying air as a reactant and a coolant to the fuel cell; and an exhaust duct for discharging the air having cooled the fuel cell out of a rear end of the vehicle body, the exhaust duct having an inlet connected to a rear end portion of the fuel cell.

The invention discloses a high-efficiency energy-saving mine multi-stage fan station ventilation monitoring technology system. Intake fan stations (1) are arranged in the intake sections of a mine, return fan stations (2) are arranged in the return air sections, air consumption fan stations (3) are arranged in the air consumption sections, and a ground main mine monitoring room (4) is arranged on the ground surface of the mine. A multi-stage fan station ventilation network calculation program is developed to carry out numerical calculation on the ventilation parameters of the ventilation system, such as ventilation resistance, the blowing rates of fans of the fan stations, wind pressure, efficiency and total power; the number of fan station stages and the locations of the fan stations are determined; fan models are chosen, and the blowing rates are regulated; and a remote centralized multi-stage fan station monitoring system and an underground on-line atmospheric environment monitoring system are constructed. The pressure-equalizing ventilation of each mine ventilation network section can be realized, air leakage is reduced, the starting and stopping of the fans of the intake fan stations, the return fan stations and the air consumption fan stations in the mine can be remotely controlled, the variable-frequency speed regulation of the fans is realized, the system can perform inverted ventilation, parameters, such as the operating states of the fans, the blowing rates and wind pressure of the fans, motor bearing temperatures and power factors, can be monitored in real time, and the underground ventilation environment can be monitored in real time and on line.

The invention discloses a power plant boiler used coal-saving desulfurating additive, which is prepared by mixing calcium oxide, silicon dioxide, calcium ammonium nitrate, sodium nitrate, potassium permanganate, ammonium nitrate, iron oxide, alumina, activated carbon and borax by curtain weight percentages; and then using a pulverizing mill to pulverize the mixture into power, the granularity of which is 80-100 MU; putting the power into a stirrer and stirring the power; packing the power into finished product after the power is tested to be qualified. The invention has obvious sulfur capturing and desulfurizing effects, can save energy and support combustion, can lower the blackness of the exhausted smoke, can clear ashes and remove coke, and need not change the existing combustion process and equipment. The invention is in particular applicable for the coals with high ash content, high sulfur content and low volatile constituent content. The invention can reduce equipment leakage accident caused by poor quality of coal, can ensure the safe operation of the boiler effectively, can ensure the safe operation of electric generating set, therefore being worthy to be spread by all thermal power plants.

The invention discloses a cell suspension culture tank and its usage. Compared with current flat base biological tank, it is characterized by wide- bodied culture tank, converse flat conical bottom, larger culture medium area, benefit for oxygen absorption and carbon dioxide discharge, reduced cell inoculation volume, much lower level of air injection, prolonged air bubble course, regular agitation that makes culture medium contacts with tank wall, and generates small cutting force and mechanical force, and benefit for surface area enlargement, air aeration amount and improved mixing. The disposal plastic or glass shake flask suspension culture system using no complicate control tower and relevant probe, is developed by using design in this invention. The invention aslo relates to large- size industrial biological reactor which is drove by stirring paddle.

The invention relates to a method for producing tetracycline by fermentation of streptomyces aureus. The method comprises the following steps: slant spore culture, seed culture and fermentation culture of the streptomyces aureus, and is characterized in that dextrin, sucrose, corn pulp, hydrolyzed soybean meal and other medium-effect carbon-nitrogen sources are adopted to replace original late-effect carbon-nitrogen sources; by reducing the contents of starch and bean flour in an original fermentation culture medium and combining with a formula of a mixture in the fermentation process and adjustment of a replenishing method and placing part of the nitrogen sources in the fermentation culture medium into material replenishment in the fermentation process, the concentration of the culture medium in the fermentation process is effectively controlled, the oxygen dissolution condition in the early stage of fermentation is improved, the final residue of the culture medium of fermentation is controlled by material replenishment, the material consumption is reduced, and the emission of solid wastes is reduced; the metabolism velocity in exponential growth phase in the fermentation process of the tetracycline is effectively controlled, the abnormal situations that a fermentation solution turns red and becomes sour and the like in the fermentation process are reduced, and the fermentation level is improved.

The invention provides a superhydrophobic fibrofelt and a preparation method thereof. The preparation method comprises the following steps: ultrasonically cleaning the fibrofelt in acetone, absolute ethanol and deionized water successively, and then drying the fibrofelt; adding room-temperature-cured fluorocarbon resin (FEVE) and two-component rigid polyurethane resin (SRP-FC) into an organic solvent, and carrying out uniform mixing under stirring so as to form a stable resin solution; directly adding hydrophobic fumed silica nanoparticles and fluorosilane into ethanol, and carrying out ultrasonic dispersion so as to prepare a superhydrophobic finish solution; and putting the cleaned fibrofelt in the primer resin solution, carrying out impregnation, then taking the fibrofelt out, removing excess resin and solvents through squeezing, carrying out drying, then subjecting the fibrofelt to dip-coating in the finish solution so as to form a superhydrophobic coating on the resin-treated fibrofelt, and then carrying out drying and curing so as to obtain the anti-fouling anti-moisture anti-mildew superhydrophobic fibrofelt.

The invention provides a method for obtaining carbon consumption in a DPF (Diesel Particulate Filter), a controller and an engine. The method is applied to the controller and the engine, and oxygen sensors are respectively arranged on two sides of the diesel particulate filter in the engine. The method includes the steps of: in the case that the rotating speed and load of the engine meet preset triggering conditions during the regeneration process of the DPF, the controller determining the oxygen mass flow on two sides of the DPF at current moment according to the current oxygen concentration on two sides of the DPF detected by the oxygen sensors; computing the mass of carbon granules consumed in the DPF at the current moment according to the oxygen mass flow on two sides of the DPF at the current moment; judging whether time of duration is larger than preset calibration time, and if yes, ending the process. Through the application of the method for obtaining carbon consumption in the DPF, the accuracy rate of computing the consumption of the carbon granules in the DPF can be improved, and the DPF can exit the active regeneration process on more suitable situations.

The invention discloses a hydrolysis-aerobiosis two-section biological drying method for household garbage and relates to a treatment technique for garbage water removal and partial biological stabilization. The method comprises the following steps of: stacking the household garbage in a groove type composting reactor and performing ventilation at long intervals; neutralizing all the generated percolate until the pH is 6.8 to 7.8; refluxing the percolate to the garbage stack in the groove type composting reactor to perform hydrolysis and drying on the garbage for four days; stopping refluxing the percolate; ventilating for two times every hour and turning for one time every two days to dry the garbage after repeating for twelve days; and removing the dried garbage from the groove type composting reactor for resource utilization or directly burning the dried garbage for energy recovery. After the biological drying process, the water content of the garbage is reduced from over 70 percent to below 45 percent; the lower heat value is increased by more than one time; the efficiency of separation is increased to 80 percent; and the recycling value of the household garbage is obviously increased. The method can be widely applied to drying treatment of the household garbage with the water content over 65 percent and solid waste which is mainly the biologically degradable waste.

A three-layer rapid composting device and a composting method by the device relate to a composting device and a composting method by the device. The invention aims to solve problems of long composting period, odor pollution and low fermentation efficiency that exist in an existing membrane-covered composting method. The device of the invention comprises a trapezoid cement base, a draught fan, a perforated feed pipe, a V-shaped percolate guiding chute, a waterproof and breathable membrane, a percolate draft tube and a percolate collecting box. the method of the invention comprises the following steps: 1, burden distribution: a fermentation material and a compost clinker are mixed and the mixture is placed at the bottom of the three-layer rapid composting device, the compost clinker is covered, and a waterproof and breathable membrane is covered; 2, fermentation for 7-20 days. According to the invention, the compost clinker and the fermentation material are mixed without adding a conditioner. Thus, purchase expense of a conditioner is reduced, composting period is shortened, and energy consumption is decreased. By changing ventilation direction, no energy is additionally added. In addition, fermentation efficiency is enhanced, and composting period can be remarkably shortened.

The present invention relates to a gas detection and automatic fan control system for a coal mine, and comprises an exhaust fan; the input end of the fan is connected with a transducer which is connected with the output end of a SCM through a data/ mode converter; the input end of the SCM is connected with a gas consistency sensor through the data/mode converter and a safety fence which are connected in order; the another input and output of the SCM are respectively also connected with corresponding keypads and a LED which shows the measured consistency and sets the consistency. The present invention can realize a normal low-power operation of ventilation during the absence of gas, thereby saving energy; and as the increasing of the gas consistency, the fan can operate and ventilate in high speed, thereby reducing the gas temperature in very short time, preventing the gas explosion and safeguarding the life security.

A total heat exchanger unit (1) is provided with a controller (2) which, upon receiving a stop signal for stopping arbitrary ventilation operation, ends the arbitrary ventilation operation and starts forced ventilation operation and which, upon receiving a start signal for starting the arbitrary ventilation operation, ends the forced ventilation operation and starts the arbitrary ventilation operation. The controller (2) is adapted to intermittently operate an air supply fan (20) and an air discharge fan (21) in the forced ventilation operation.