5results about How to "Improve experimental precision" patented technology

This invention discloses an ultra-high spatiotemporal resolution single-shot measurement system based on warm-dense gold, belonging to the field of pump-probe technology. It includes a femtosecond laser module, a femtosecond pulse compression module, a femtosecond pulse shaping module, a 400nm few-period femtosecond pulse module, a sample module, a probe light module, and an imaging system module. The femtosecond laser module provides a femtosecond laser beam, which is compressed by the femtosecond pulse compression module to generate a few-period femtosecond pulse. After optimization by the femtosecond pulse shaping module, the pulse is split into two beams. One beam is used to generate an ultraviolet-band few-period femtosecond pulse through the 400nm few-period femtosecond pulse module, serving as the pump light. The other beam is used to generate an 800nm ​​few-period femtosecond pulse through the probe light module, serving as the probe light. The sample to be measured is placed inside the sample module, and the pump light and probe light act on the sample module simultaneously. Imaging is achieved through the imaging system module. This invention solves the problem that due to low temporal resolution, the Auger time of electrons in metals is on the order of 10 femtoseconds, making it impossible to effectively detect the initial processes of the formation of warm-dense materials.

The present application belongs to the field of geothermal energy exploitation and irrigation, and discloses a geothermal exploitation and irrigation indoor simulation experiment method and device. The method comprises the following steps: loading a core sample into a core holder; placing the core holder in a container with a constant temperature water bath environment and keeping the core sample above the water surface; covering the core sample with sand; injecting water from the first end of the core holder and controlling the flow rate of the injected water; collecting the injection pressure of the first end of the core holder and the production temperature of the outflowing water at the second end; and analyzing the injection and production temperature variation based on the flow rate and pressure of the water injected at the first end and the temperature of the outflowing water at the second end. The method and device of the present application simulate the thermal reservoir by combining a constant temperature water bath with a sand bath, which can better simulate the actual situation of the reservoir and provide support for the development and utilization of oilfield hydrothermal geothermal energy.

A kind of ion thinning device loading table convenient to replace, it is characterized by including loading bearing table device, connecting block, connecting groove, sterilization device, sample positioning device, detachable loading table device, the connecting block is installed on the side of loading bearing table device, connecting groove is set up on the connecting block, loading bearing table device is connected with connecting block by bolt nut, multiple sterilization devices are installed on loading bearing table device, loading bearing table device is connected with sterilization device by hinge hinge, detachable loading table device is installed on loading bearing table device, sample positioning device is installed on detachable loading table device.

The utility model belongs to bridge engineering experimental equipment technical field especially relates to a mud and stone flow impact pier simulation device, it includes water tank, angle adjusting device, mud and stone flow simulation device, pier module and data acquisition system, water tank includes inclined section and horizontal section, mud and stone flow simulation device installs on the inclined section, pier module installs on the horizontal section and pier module, the utility model discloses can adjust water tank angle, mud and stone flow impact force, flow rate and flow mode simultaneously, simulate the mud and stone flow flow path under different topographic conditions, control the flow rate, grain size distribution and impact force of mud and stone flow, adapt to a variety of experimental needs, and pier module adopts modular design, has the advantage that can quickly replace different shape pier model, be convenient for the study different shape pier's anti -impact performance, be applicable to mountainous area bridge engineering design, geological disaster prevention and control research and teaching experiment, can provide scientific experimental basis for pier anti -impact performance optimization and disaster prevention and mitigation strategy.

This invention relates to a simulation analysis method for emergency evacuation of blended wing-body (BWB) passenger aircraft, comprising: constructing a sudden accident scenario and risk evolution model for the passenger aircraft; determining the emergency evacuation simulation experimental conditions; and building a simulation environment. A three-dimensional model of the BWB passenger aircraft is established and imported into Anylogic simulation software to construct a realistic emergency evacuation module for BWB aircraft personnel, and a personnel emergency evacuation behavior model is established using the simulation software. Based on the simulation environment, the realistic emergency evacuation module, and the personnel emergency evacuation behavior model, a simulation of emergency evacuation of BWB aircraft personnel is conducted to obtain the risk factors and weaknesses existing in the emergency evacuation process. This invention provides a convenient, fast, low-investment, and highly feasible method for verifying and analyzing the relevant layout design of future new BWB passenger aircraft, providing data support for the design of this type of aircraft.