138results about How to "Stable floating" patented technology

A MEMS structure includes a floating space formed on the upper silicon layer by a first dry etching, and then dry etched to a predeterminded depth on the lower silicon layer by etching gas supplied through the etched holes from which the oxide film has been removed at the bottom surface thereof in a second dry etching process, so as to float the movable portion; and the oxide film for preventing electrical short circuit remaining on the lower surface of the movable portion so as to correspond to the lower silicon layer leaving the floating space therebetween.

The invention discloses an oil absorption material using cellulose as a base and a preparation method thereof. The preparation method comprises the following steps: pretreating the raw material corn straws with sodium hydroxide and sodium hypochlorite to extract cellulose, and carrying out acetylation modification on the cellulose with acetic anhydride to obtain the natural high-efficiency oil absorption material. The technical scheme disclosed by the invention has efficient adsorption effect on marine oil spill; the oil absorption rate can reach more than 60 times; and the preparation method has the advantages of simple process and easy recovery.

A nectar feeder for hummingbirds comprises a container, base tray, a base tray cover, a float, and a stopper thereon. The container, or bottle, is used for storing nectar feed. An exit port is defined on the bottom end of the container. The base tray is connected in fluid communication with the container and has at least one vertical member depending upwardly from a top surface of the base tray. A circumferential flange or ring is provided about the float for stabilization. The float engages the at least one vertical member to prevent substantial independent lateral movement of the float. In operation, the nectar feed flows through the container and into the base tray until the float rises to a level where the stopper mechanism engages the exit port to prevent fluid from flowing into the base tray.

A magnetic recording medium for use in digital magnetic recording, which comprises a nonmagnetic substrate having deposited thereon a magnetic layer, wherein with respect to the in-plane direction, the magnetic recording layer comprises a plurality of ferromagnetic regions separated from each other by an antiferromagnetic region. A production method of the magnetic recording medium and a magnetic disc apparatus are also disclosed.

The invention discloses an offshore floating platform and belongs to the technical field of offshore operations. The offshore floating platform comprises a test platform, a buoyancy structure, a shaking reduction and swinging preventing structure and an mooring structure, wherein the test platform, the buoyancy structure and the shaking reduction and swinging preventing structure are sequentially connected from top to bottom, one end of the mooring structure is connected with the shaking reduction and swinging preventing structure, the other end of the mooring structure is disposed on the sea bed. The offshore floating platform has the advantages that the buoyancy structure is disposed below the test platform to allow the test platform to be able to float on the sea, the test platform needs not to be supported by other structures, the test platform can constantly float on the sea during tide rising or tide falling, the situation that the test platform is submerged by the sea surface or the sea surface is much lower than the test platform is avoided, influence of the heave of the waves on the test platform can be reduced by the shaking reduction and swinging preventing structure, the small-sized test platform can stably float on the sea, and the offshore floating platform is applicable to small-scale offshore operations.

The invention discloses a floating aquatic plant cutting, collecting and defouling device comprising a device body; the device body comprises a floating body framework, a cutting knife device, a collecting device, a defouling device and a traveling device; a shaft of each device is fixedly arranged on a floating body and can rotate under the drive of a direct-current motor by virtue of a bearing;an electric push rod is connected with the floating body and a reciprocating cutting knife system and is also connected with a screw blade conveyor system and the floating body; and the electric pushrod is located at the rear of the device to ensure that the center of gravity of the device is located in the center so that the device is convenient to move and float. The device is produced according to the principle of bilateral symmetry, and it is ensured that the center of gravity of the device is located in the middle of the device, so that the device can stably float on a water surface; andreciprocating cutting knives have buffering functions so as to be wider in use range. The device has the advantages of simple and convenient structure and simplicity in operation and is capable of realizing control on each part by controlling a remote controller, suitable for clearing aquatic plants in a small water area and capable of greatly increasing the work efficiency.

The invention discloses a microalgae culture system, a cavity type photobioreactor and a microalgae culture method. The culture system comprises the photobioreactor capable of containing a culture solution and microalgae. The photobioreactor is in a closed type. The wall of the photobioreactor is a sealed body with a hollow sandwich structure, and/or the wall of the photobioreactor is made of a light heat insulation material. The photobioreactor is provided with a ventilation structure. The culture solution contains bicarbonate. By adopting the system for culturing the microalgae, heat exchange between the photobioreactor and a water environment where the photobioreactor is located can be well controlled, the culture temperature in the photobioreactor can be kept higher than the temperature of the water where the photobioreactor is located so as to increase the growth speed of the microalgae, but the situation that the culture temperature is too high and leads to death of the cultured microalgae will not occur. The culture method is simple, low in cost, high in culture efficiency and suitable for industrial application.

This magnetic recording medium is characterized in that in the magnetic recording medium having a magnetic layer on a non-magnetic substrate by intercalating at least an under layer, the proportion of functional groups per 100 carbon atoms in a diamond-like carbon protective layer mainly composed of carbon for protecting the magnetic layer exceeds 20%. The bonding force between the protective layer and the lubricating layer of the magnetic recording medium is increased so that under high speed rotation, a decrease in the lubricating layer is not caused so as to provide a magnetic recording apparatus having high reliability.

The invention relates to the technical field of wave prevention, in particular to an opened wave dissipation component structure comprising an opened component (1), a float unit (2) and a porous opened floating plate (3). The float unit (2) is installed on the opened component (1) to allow the opened component (1) to float on the water surface; the porous opened floating plate (3) is installed in the opened component (1) horizontally and is capable of swinging vertically. By the aid of the structure, the wave force can be reduced greatly, structure is simple, cost is low, and installation and operation are facilitated.

The invention discloses a suspension type water surface greening module. The module comprises artificial floating blocks which are made from floaters, mesh lines and composite borders; the composite borders are fixed through L-shaped internal embedded block bolts and L-shaped external embedded block bolts, 1-3 rows of meshes are formed in the composite borders, the mesh lines penetrate through themeshes and cross holes formed in the centers of the floaters and make the floaters fixed at junctions of threading, and plants are planted on the artificial floating blocks which are slowly put flatin water; by means of sinkers hung on the four corners of the artificial floating blocks, roots of the plants in the artificial floating blocks touch the water. The invention further provides a methodfor cultivating and planting the plants by means of the suspension type water surface greening module. The module and the method have the advantages that environmental pollution is reduced, the wateris purified and improved, and comprehensive purification of the environment is facilitated; building operability is high, plant replacing and harvesting are easy, floating bed floating is stable, thewater attaching property is high, and the module is not likely to fall under wind and waves.

The invention provides a nearby emergency oil containment boom for ship body damaged oil spillage. The nearby emergency oil containment boom comprises two parts, namely a self-inflating oil containment boom main body and electromagnetic absorption type ship body connectors. The self-inflating oil containment boom main body is composed of a plurality of oil containment boom units of a hard structure; for storage, various units can be folded mutually to occupy a tiny space and thus can be readily carried on a ship to cope with emergencies. The self-inflating oil containment boom main body is connected with fast joints of two electromagnetic absorption type ship body connectors through fast joints on the two ends of the self-inflating oil containment boom main body, respectively; the two connectors are fixed in appropriate positions on the two sides of a ship body damaged position. In case of a ship accident, the nearby emergency oil containment boom for ship body damaged oil spillage is capable of quickly containing a water surface within a nearby distance range of the ship body damaged position; in case of oil spillage, oil spillage can be contained within a small distance range nearby the ship body. The nearby emergency oil containment boom for ship body damaged oil spillage can be laid in two manners: one is a conventional stretching laying manner, while the other one is a semi-folding oil containment boom unit stretchable laying manner.

The invention discloses an anti-rollover biological floating bed for river regulation and an implementation method thereof. The anti-rollover biological floating bed for river regulation comprises a floating mechanism and a protection mechanism, arc-shaped baffles are installed on the two sides of a floating bed body, and air inducing grooves are formed in the upper ends of the sides, away from the floating bed body, of the arc-shaped baffles; and the arc-shaped baffles can shield the floating bed body and planting baskets, the air inducing grooves enable shielded wind power or wave water to flow out through the air inducing grooves, a balancing weight and a gravel layer are arranged at the bottom end of the inner cavity of a semicircular base, and a foam filling layer and a sealing hollow layer are arranged at the upper end of the inner cavity of the semicircular base. Therefore, the lower end of the semicircular base is heavy, and the upper end of the semicircular base is light. According to the principle of a tumbler, the semicircular base and the floating bed body cannot be blown over, so that the floating bed body keeps stable on a river channel, an impurity collecting box collects floating garbage on the water surface through a collecting empty groove, and a limiting baffle can block the floating garbage on the river channel, so that the floating garbage moves downwards to enter the inner side of the collecting empty groove.

The invention discloses a solar bracket unit. The solar bracket unit can float on the water surface and comprises a base and a bracket for placing a solar cell panel, wherein the bracket is fixed on the base. According to the solar bracket unit disclosed by the embodiment of the invention, as the solar bracket unit can float on the water surface, the solar bracket unit can be applied to ponds, rivers and even oceans, the applicable range of the solar cell panel is expanded, and the development space of solar power generation is further increased. The invention also discloses a solar cell module with the solar bracket unit.

The invention relates to a sensor mounting clamp, in particular to a water quality monitoring buoy sensor mounting clamp, and belongs to the technical field of water quality monitoring devices. The water quality monitoring buoy sensor mounting clamp is characterized by comprising an upper clamp and a lower clamp which have the same structure, wherein the upper clamp and the lower clamp are provided with clamping rings (4) for clamping the upper part and the lower part of a sensor (2); the sensor is hooped by a locking mechanism (6) and the hooping degree is adjusted; a plurality of lug handles (3) are arranged on the peripheries of the upper clamp and the lower clamp respectively; a horizontal floating body (1) is arranged between the upper clamp and the lower clamp; the lug handles (3) are adhered to the floating body (1); vertical bolts penetrate through the floating body (1) to connect and fix the corresponding upper and lower lug handles (3); the upper end of the sensor (2) is connected with a control cabinet (14) on a bank through a cable (13).

The invention discloses a water surface photovoltaic supporting device. An outer pile barrel is arranged on a grouting foundation pile, an inner pile barrel is sleeved with the outer pile barrel, the inner pile barrel can slide up and down along the outer pile barrel, a supporting assembly is connected to the top of the inner pile barrel, and a plurality of inclined rods are arranged between the side face of the inner pile barrel and the supporting assembly at intervals; a plurality of buoys are fixedly arranged on the side face of the supporting assembly, an angle adjusting assembly is arranged at the top of the supporting assembly, and the photovoltaic assembly is fixedly installed on the angle adjusting assembly. Stable fixation of the water surface photovoltaic module can be fully ensured, the action of heavy pressure is reduced through elastic support, the sun facing direction of the module is increased in a limited space, and the module sampling efficiency is improved.