31results about How to "Moderate sensitivity" patented technology

The invention discloses a control device of a variable pitch aircraft. The control device comprises a first control rod; the first control rod controls the screw pitch of rotor wings of an aircraft and the rotation speed of a motor to increase synchronously at the first state, and controls the screw pitch of rotor wings of the aircraft and the rotation speed of the motor to increase synchronously at the second state. The invention also discloses a control method of a multi-rotor-wing variable pitch aircraft. According to the control method, when the climbing screw pitch of the aircraft needs to be increased, a flight controller controls the motor to improve the rotation speed and the torsional force correspondingly in a certain proportion. The mode is relatively high in efficiency, has moderate sensitivity and is easy to control.

The invention relates to a method for synthesizing o-cresol novolac resin, comprising the following steps of (1) reacting o-cresol with formaldehyde under the temperature of 65 DEGC to the reflux temperature of a reaction system with the existence of an alkaline catalyst for 6-14 hours in a first reaction area, then heating and discharging water, cooling to the temperature of 80-90 DEG C when effluent water accounts for 1/4-1/3 of the total effluent water, adjusting the pH to 4.5-5.5 by adding acid which is used as the neutralizer, then adding an acidic catalyst of 0.5-2 percent of the total weight of phenol monomer, subsequently heating to the temperature of 140-145 DEG C, wherein water is discharged continuously in the process for 4-4.5 hours from starting water discharging to the temperature of 140-145 DEG C; and (2) transferring a reaction mixture obtained from step (1) to a second reaction area which is preheated to the temperature of 180-185 DEG C, heating to the temperature of 190-195 DEG C within 2-2.5 hours, and then decompressing and vacuumizing to obtain the o-cresol novolac resin. The o-cresol novolac resin synthesized by using the method has high Mw, trace contents of monomer and diplocaryon, extreme lower content of monomer in waste gas and waste water and less environment pollution.

The invention discloses a hexaaryl bis-imidazole photoinitiator. The molar ratio of a red shift substituent group in all substitutable sites of the hexaaryl bis-imidazole photoinitiator is 6-16%. Whenthe photoinitiator is applied to a photosensitive resin composition, the photoinitiator is moderate in sensitivity, good in solubility and excellent in resolution ratio and developability, inverted trapezoids cannot appear during development, the photoinitiator has good hydrophilicity, the amount of sludge in a developing solution during recycling can be remarkably reduced, and the developing solution can be repeatedly and effectively used for multiple times. The invention also provides a photosensitive resin composition containing the photoinitiator, and an application of the composition.

The invention discloses a method for detecting moisture content of explosion beads for cigarettes. According to the method, explosion bead samples for cigarettes are pretreated, separated by a capillary column and analyzed by a gas chromatography-thermal conductivity detector method; each sample is measured twice in parallel; in each experiment, a blank sample is needed; and quantification is carried out by adoption of an internal standard method so as to obtain moisture contents in the beads. The detection method is verified to have an adding standard recovery rate of 98.95%-104.48%, a methodquantification limit of 0.0577 mg/mL, an intraday precision of 3.47% and a day-to-day precision of 4.05%. The method is simple in pre-treatment operation and good in reproducibility, and is capable of correctly analyzing and quantifying explosion bead samples with low moisture contents.

A kind of flexible circuit panel includes: the first circuit layer, the second circuit layer, the first adherence layer, the second adherence layer and separating layer. The first circuit layer has a few the first through-holes and a few the second switches which correspond to the first switches, the first switches is set to face to face the second switches, the first adherence layer is set on the first circuit layer by rounding the first through-holes and the first switches; the second adherence layer is set on the second circuit layer by rounding the second through-holes and the second switches; separating layer is set between first circuit layer and second circuit layer and has a few the third through-holes which correspond to the first through-holes and second through-holes and a few the forth through-holes which correspond to the first switches and the second switches.

The invention discloses a portable sand box tool overturning lifting appliance. The portable sand box tool overturning lifting appliance is characterized in that a lifting appliance body is of a double-layer structure; gaskets (6) are arranged between a middle hanger shaft (3) and the inner layer and outer layer of the lifting appliance body; the middle of the middle hanger shaft is connected with the lower portion of a closed lifting ring in a sleeved mode, and the two ends of the middle hanger shaft penetrate through the inner layer and outer layer of the top end of the lifting appliance body separately and are fixedly connected through screw caps; the two sides of the middle hanger shaft are each provided with a fastening bolt (4) at equal intervals and are fixedly connected with the inner layer and outer layer of the lifting appliance body through screw caps (5); pulley hanger shafts II (7), hanger shafts III (10) and cross-shaped joints (8) are arranged at the two ends of the lifting appliance body; gaskets (9) are arranged between the hanger shafts II and the inner layer and outer layer of the body; the hanger shafts II penetrate through the inner layer and outer layer of the lifting appliance body and are fixedly connected through screw caps; the hanger shafts II are connected with the corresponding cross-shaped joints in a sleeved mode, and the hanger shafts III are connected with pulleys (11) in a sleeved mode; and the hanger shafts III penetrate through the two sides of the corresponding cross-shaped joints and are fixedly connected through nuts, and the pulleys are sleeved with corresponding iron chains (12).

The invention supplies a preparation method for macromolecule resistance thermal detection compound heavy film sensor. The features of the invention are: it has dense ceramic substrate, symmetry silk-screen rectangle porous graphite pole on one side of densifying ceramics, silk-screen gold paste on the terminal of the pole, soldering pins after metallization, distribution droplets response type humidity sense media, heating and concentrating to net polymer and complete physical entanglement and nail rivet with porous electrode. The positive effects of the invention are: (1) improving resistivity against water, electrical ageing, and mechanism aging resistance of the component;(2) supplying both physical entanglement and nail rivet point of network polymer, as well as proper space to contain pollutant; (3) the humidity sense media adopting environment protection solvent, and adopting high precision point glue machine, technique of mass production is simple and convenient; (4) component having high linearity, low wet stagnant, wide range, and suitable sensitivity.

The invention relates to a homogeneous detection kit for creatine kinase isoenzyme and application thereof. The kit comprises a reagent 1 and a reagent 3, wherein the reagent 1 comprises a first buffer solution and acceptor particles suspended in the first buffer solution, the reagent 3 comprises a second buffer solution and donor particles suspended in the second buffer solution, the acceptor particles comprise a first carrier, the first carrier is filled with a luminous composition, and a particle size distribution variable coefficient C.V value of the receptor particles in the reagent 1 is not lower than 5% and not higher than 25%; and the donor particles comprises second carriers, the second carriers are filled with a sensitizing agent, and the sugar content of the donor particle in each milligram of the donor particles in the reagent 3 is not higher than 40 mg. The homogeneous detection kit provided by the invention can be used for clinical auxiliary diagnosis of myocardial infarction, and not only has relatively proper sensitivity, but further has a very wide detection range.

The invention discloses a dual-technology detector based on temperature bidirectional compensation, comprising a PIR sensor, a microwave sensor, a PIR amplification circuit, a microwave amplificationcircuit, a temperature conversion circuit, a single-chip microcomputer processing unit and an alarm output circuit. The dual-technology detector based on temperature bidirectional compensation comprises the following steps of: receiving analog voltage signals transmitted from the PIR amplification circuit through the single-chip microcomputer processing unit, and monitoring whether the voltage exceeds a PIR threshold voltage or not; receiving analog voltage signals transmitted from the microwave amplification circuit, and monitoring whether the voltage exceeds a microwave threshold voltage ornot; collecting the voltage of the temperature conversion circuit in real time, and performing real-time compensation of the PIR threshold voltage and the microwave threshold voltage according to thetemperature condition; and finally, comprehensively judging the PIR analog signal and the microwave signal, and determining whether to generate an alarm output according to the PIR threshold voltage and the microwave threshold voltage condition after temperature compensation. The dual-technology detector can maintain the proper sensitivity without the conditions that the sensitivity is high at lowtemperatures and is low at high temperatures due to temperature changes.

The invention belongs to the technical field of medical instruments, and relates to a blood oozing and blood leakage monitor, which comprises three assemblies of a transmitter, a receiver and a novel transfusion paste, and the real-time monitoring on the blood oozing and blood leakage condition of a puncture part in the treatment process of a patient is realized. Once blood oozing and blood leakage occur, the transmitter assembly responds immediately, a vibration and/or sound-light alarm is given out, and meanwhile blood leakage information is transmitted to the receiver assembly in a nurse workstation through wireless signals. After the receiver receives the signals, the signals are fed back to medical staff of a nurse station through the ways of images, sounds, light and the like, and it is ensured that the medical staff know the conditions at the first time and arrive at the patient for processing.

The invention discloses a floating block used for an impeller-type washing machine, a water-spraying plate with the same and an impeller-type washing machine. The floating block used for the impeller-type washing machine comprises a floating block body, one or more communication openings are formed in the floating block body in the thickness direction of the floating block body in a penetrating mode, the floating block body is of a hollow structure, and a solid structure is arranged at one end of the floating block body. According to the floating block used for the impeller-type washing machine, the floating block body is arranged to be of the hollow structure, the solid structure is arranged at one end of the floating block body and has large gravity, and therefore when the floating block is applied to the impeller-type washing machine, the floating block has good stability and suitable flexibility under the effect of gravity and buoyancy.