203results about How to "Small space" patented technology

A particle beam irradiation system includes a particle beam irradiation apparatus, which is free of a gantry structure, having a particle beam irradiator for irradiating an affected area of a patient with a particle beam, the particle beam irradiator being housed in a chamber, a CT scanner installed in the chamber, for positionally confirming the affected area of the patient, a drive unit for moving the patient from a detection range to an irradiation range, a patient fixing device for fixing the patient in position, the device being mounted on the drive unit for rotation, and a housing unit having a structure housing the drive unit with the patient fixing device mounted and the CT scanner, the housing unit being rotatable about an axis perpendicular to a plane including a direction in which the particle beam is applied and a direction in which the drive unit moves.

The invention relates to a roof water control method based on presplitting and grouting modification. The roof water control method includes the following steps that first, the height of a water diversion fissure zone on the working surface is determined; second, fracturing and grouting are carried out before determining extraction of the working surface; third, fracturing horizon and grouting horizon are determined; fourth, the fracture and grouting plane range and thickness are determined; fifth, horizontal holes of a roof stratum are subjected to hydraulic fracturing, hydraulic fracturing is carried out on the rock stratum through horizontal branch holes of the construction ground, and an original continuous medium is fractured into a discontinuous medium; and sixth, roof stratum grouting is conducted, and the water-passing capacity of the rock stratum is greatly reduced. Thereby, the roof water control method fractures the rock stratum with good continuity into a discontinuity rockstratum, then a grouting technology is adopted to transform the rock stratum into a relatively weak waterproof protective layer to achieve the dual purposes of inhibiting upward development of the water diversion fissure zone and weakening the permeability of the rock stratum, and thus the water yield of aquifer underground water of a coal roof pouring into the coal face through the water diversion fissure zone is decreased.

A barbecue stove includes a body, a cover, a storage device, two primary feet and two secondary feet. The cover is pivotally connected to the body. The storage device is attached to the body. The primary feet are attached to the body. The secondary feet are attached to the storage device. The barbecue lies on the primary feet in use and stands on the secondary feet in storage.

A reusable shopping bag holder and system and method of using a reusable shopping bag holder and system is disclosed herein. The system includes a primary bag and a plurality of flexible secondary bags. The primary bag includes a plurality of compartments formed by dividers or pockets. The compartments store the secondary bags such that the secondary bags can be removed from the primary bag as necessary to store and carry shopping items. The primary bag itself may also be used to carry shopping items.

The invention discloses a preparation method of a carbon nanotube-alumina composite reinforced magnesium-based composite material, which relates to the manufacture of magnesium-based alloy by using a casting method. The preparation method comprises the steps of: step 1, calcining and reducing raw materials of ferric nitrate nonahydrate and alumina in the ratio of (0.07-1.00):1 to obtain an iron / alumina composite catalyst, and finally, performing catalytic pyrolysis reaction by using the mixed gas of nitrogen gas and ethylene in the volume ratio of (6-12):1 for uniformly dispersing carbon nanotubes on the surface of the alumina, so as to prepare a carbon nanotube-alumina composite reinforced phase; and step 2, adding the carbon nanotube-alumina composite reinforced phase to a molten magnesium base material, and stirring and casting to prepare the carbon nanotube-alumina composite reinforced magnesium-based composite material, wherein the added carbon nanotube-alumina composite reinforced phase accounts for 1-15% of the molten magnesium base material by mass percentage. According to the invention, the defect of a magnesium-based alloy texture in the magnesium-based composite material produced in the prior art is overcome, the excellent enhancing effect of the carbon nanotubes in a magnesium matrix can be brought into full play, and the comprehensive performance of the magnesium-based composite material is ensured to be enhanced.

A power supply adapter includes a base frame, a pin assembly having a first pin defining a first fixing portion and a second pin respectively pivoted in the base frame, a driving module having a control element pivoted on the base frame and a connecting bar pivoted between the first pin and the second pin. The control element has a pressing portion, a propping portion extended from the pressing portion and a second fixing portion protruding from the propping portion. The second fixing portion can be buckled with the first fixing portion to secure the pin assembly in the base frame by way of pushing the first pin to drive the pin assembly by means of the connecting bar to rotate into the base frame, while the pressing portion can be pressed to make the second fixing portion release the first fixing portion so as to make the pin assembly extend out of the base frame.