20 results about "Ridge" patented technology

There is provided an optical member comprising: a first optical layer having: a first main face formed with a concave section having a concave curved surface, and a plurality of convex ridges having concave curved surfaces provided in concentric circular fashion around said concave section; and a second main face formed with: a convex section having a convex curved surface that is provided facing the concave section and constituting a second main face facing the first main face; and a plurality of convex ridges having convex curved surfaces provided facing the plurality of convex ridges having the concave curved surface, provided in concentric circular fashion around the convex section; and a second optical layer provided on the first main face of the first optical layer; and a third optical layer provided on the second main face of the first optical layer; wherein the refractive index of the first optical layer is higher than the refractive index of the second optical layer and is higher than the refractive index of the third optical layer.

A pneumatic tire which positively discharges water having flowed into a groove extending in the tire circumferential direction and enhances capability of preventing hydroplaning. The groove is provided in the tread face of the tire and extends in the tire circumferential direction. The wall face of the groove is provided with line portions composed of a plurality of ridges or recesses that are inclined in one direction with respect to the groove longitudinal direction.

The invention discloses a method for ecologically cultivating freshwater shrimps in a paddy. The method includes the following steps that the paddy is fertilized and then raked, a communicated cultivating ditch is excavated in the raked paddy, a field ridge is built around the cultivating ditch with excavated soil, the height of the field ridge ranges from 45 cm to 70 cm, and the width of the field ridge ranges from 60 cm to 90 cm; the cultivating ditch is provided with a water inlet and a drainage opening, the water inlet and the drainage opening are respectively provided with a device preventing the freshwater shrimps from escaping, a pond occupying 5%-8% of the area of the whole paddy is excavated on the water inlet, and the depth of the pond ranges from 80 cm to 110 cm; the paddy is sterilized through calcium oxide; seedlings of a rice variety are inserted into the sterilized paddy, wherein the stalks of the seedlings are thick and strong, the seedlings are resistant to lodging, diseases and fertility and grow in deep water, and the yield is high; the freshwater shrimps are fed after the seedlings turn green; bait is thrown during cultivating according to the freshwater shrimps in different growth stages, and meanwhile water keeps clean. The freshwater shrimps cultivated in the method are natural and free of pollution and are pure green food.

A closure arrangement for a reclosable polymeric bag is disclosed, the closure arrangement comprising convex and concave areas that facilitate opening the bag. To initially open the bag, first and second films are separated from each other by tearing perforations. Next, interlocked closure profiles are detached from each other by grabbing onto gripper ridges and pulling the opening of the bag apart. If the first or second film becomes tucked into the groove left by the perforations such that the gripper ridges are difficult to access even after tearing the perforations, then the end of the opening may be flexed up or down, thereby causing separation of the convex area and concave area to provide access to the gripper ridges.

The invention discloses a dioscorea opposita mechanical ridging directional cultivating method capable of preventing tuber deformation. The method comprises the following steps: step 1, selecting a land and preparing: step 2, ridging wide and narrow rows, namely, forming two rows of single large ridges through ridging once by a large tractor; step 3, deeply burying a guide pipe or a spacer, namely, digging a 10cm-wide, 15-20cm-deep and 100cm-long small furrow from the ridge top along the ridge slope according to a plant distance of 20-30cm, padding the semi-circular guide pipe or the plastic spacer in the furrow, covering one layer of fine soil along the furrow to press the guide pipe or the plastic spacer, and then scattering a fertilizer and covering soil; step 4, sowing bulbils or tubers in soil which is about 5cm above the buried guide pipe or plastic spacer, and thickly covering 20-30cm of fine soil; step 5, picking buds, namely, leaving one bud on each plant, and picking off the rest buds in time; step 6, performing field management and harvesting. The labor intensity of dioscorea opposita ridging and harvesting can be obviously reduced, and the tuber deformation rate obtained by cultivation is obviously reduced.

The invention provides a southward propagation generation-adding breeding method for flattop ridge twin-row high density plantation of tobaccos. The method comprises the following steps of ridging the tobaccos to be a flattop ridge, wherein the width of the top of the ridge is 80cm, and the distance of two adjacent ridge furrow center lines is 140cm; planting the tobaccos in twin rows on each ridge body, wherein the line spacing in each ridge is 50cm, and 2100 plants are planted per mu. One or more breeding materials can be provided for each ridge body. According to the method, the pure nitrogen quantity applied to per mu is required to be increased by 40 percent compared with pure nitrogen applied to per mu in a southward propagation conventional planting way, the fertilization for a single plant does not exceed 120 plants, and the number of capsules harvested by the single plant does not exceed 100. By adopting the method, the seed quality can be ensured, the aim of southward propagation generation-adding is achieved, the planting and breeding material number of a unit area land can be increased, the southward propagation leasing area is reduced, and the cost is reduced. The method is applicable to southward propagation of the tobaccos such as flue-cured tobaccos, burley tobaccos and maryland tobaccos.

The invention relates to a cultivation method of traditional Chinese medicinal materials, and in particular relates to a cultivation method of honeysuckle. The method comprises the following specific technical measures of cultivating by using grape type hanging tendrils, i.e., erecting corresponding concrete poles between cultivation ridges of the honeysuckle, pulling steel wires between the concrete poles to form a cultivation trellis, and drawing the honeysuckle branches and tendrils to the cultivation trellis to form a grape type hanging tendril planting cultivation mode; meanwhile, digging X-shaped fertilization furrows for applying solid nutrient liquid fertilizer between two plants between the cultivation ridges of the honeysuckle; applying the conventional fertilizer and additionally applying solid nutrient liquid fertilizer according to the conventional management method to realize proper water and fertilizer application and management and guarantee the high and stable yield of the honeysuckle. By implementing the method, the three-dimensional space can be fully utilized in the grape type hanging tendril planting cultivation mode, ventilation and transmittance are realized, high yield and quality of the honeysuckle are realized, and flower picking and trimming are also facilitated. The cultivation method is extremely suitable for large-scale intensive planting cultivation of the honeysuckle.

A spline roller having a cylindrical barrel having a length, a first and second end, a centerline, and a circumferential surface, and at least a first drive portion formed integrally into the circumferential surface, having a first end and a second end, at least a first circumferential recess at the first end, and comprising a plurality of the parallel, radially-disposed, splines about the circumference, each spline extending along the length of the barrel from the first circumferential recess. Each spline has a ridge extending from the first end to the second end, and typically has a crown along the length of the ridge. The ridge can be oriented along a line that is parallel to the centerline of the spline roller, to provide a straight spline roller. The ridge can also be oriented along a line that is angled inwardly at a taper angle toward the centerline of the roller, to provide a tapered spline roller. Typically, each roller has a second drive portion adjacent to and axially disposed from the first drive portion.

The invention provides a third-order distributed feedback terahertz quantum cascade laser structure and a making method thereof. The structure comprises a substrate, a ridge waveguide region and a third-order grating structure. The ridge waveguide region comprises a lower electrode, a sandwich region and an upper electrode in order from the bottom up. The sandwich region comprises a lower contact layer, an active region and an upper contact layer from the bottom up. The third-order grating structure comprises a plurality of parallel slits which are arranged in a periodic manner and pass through the upper electrode and the sandwich region in the vertical direction. The longitudinal duty ratio of the third-order grating structure is in the range from 8% to 15%. Terahertz wave is generated in the active region, is emitted from the slits by the mode selection effect of the third-order grating structure and is coupled in the space to the longitudinal ends of the ridge waveguide region. In the invention, the third-order grating is introduced in a waveguide structure of the terahertz quantum cascade laser and a relatively small far-field divergence angle is obtained by adjusting different grating duty ratios, thereby overcoming the problem that the third-order grating has a relatively big far-field divergence angle due to phase mismatch.

In a method of making fish skin leather, a fish skin with fish scales thereon is washed, cleaned, and tanned. Then, the fish scales are removed from the tanned fish skin to expose a plurality of ridges underlying the fish scales and presenting fish skin grains. The resultant fish skin leather has a skin substrate having a surface with fish skin grains that include a plurality of ridges which project from the surface of the skin substrate.

The invention discloses a composite wall and a splicing structure of a house composed of composite walls. The wall and the house are included. The composite wall comprises wallboards and heat insulation layers; the wallboards comprise the outer wallboards and the inner wallboards which are all provided with vertical profile steel; and heat insulation blocks are installed between the inner wallboards and the outer wallboards. The house is provided with a pulling-resistant and supporting structure. The house structurally comprises the composite walls, roof boards and a roof ridge pole and is formed by splicing the vertical profile steel, wherein each composite wall comprises a first composite wall body and a second composite wall body; and the vertical profile steel is installed between the inner wallboards and the outer wallboards arranged on the first composite wall bodies and the second composite wall bodies. According to the composite wall and the splicing structure of the house composed of the composite walls, the heat insulation, anti-seismic and light house is built, the cost is reduced, the construction period is shortened, and construction is convenient.

The invention discloses a method for protecting and using spiders to prevent and treat rice pests. The method comprises the steps of (1) planting a spider shelter, wherein herba cepbalanoplosis segeti and sonchus brachyotus are planted on ridges of a rice field, the planting width is 35-45 centimeters, and a shelter zone is formed so that spiders can have a migration place after harvest of the rice field is completed; (2) trapping the spiders, wherein after wheat in the rice field is harvested, rice straws, the herba cepbalanoplosis segeti and the sonchus brachyotus are tied up into cone-shaped trapping heaps, ten trapping heaps are used in per mu of the rice field and are evenly distributed in the rice field, the rice field is irrigated, the spiders enter the trapping heaps, and after 12 hours, the trapping heaps in the rice field are collected; (3) assisting the spiders in migrating, wherein the collected trapping heaps in thestep (2) are evenly placed on the shelter zone in the step (1) and are broken up, so that the spiders on the trapping heaps enter the shelter zone in the step (1); (4) spider migrating; wherein field pest generation conditions are investigated periodically after rice is transplanted, when the delphacidae number in the field reaches 300-500 heads per hundred caves, the shelter zone in the step (1) is destroyed, and the spiders are compelled to migrate to the rice field.

An ergonomic case for a smartphone features contoured finger grips at appropriate locations around the outside surface, in a pattern that provides a comfortable and ergonomic grip for a hand. Specifically, three or four finger indentations are provided in the position of use in voice calling mode. The finger indentations may be located on either side, depending on whether the particular embodiment is intended for right or left-handed users. An additional thumb indentation may optionally be provided on the opposite side. The finger indentations and thumb indentations are used to hold the smartphone, to provide a more comfortable and secure grip for the fingers, and may include ridges or another high-friction surface in the indentations.

The invention discloses a high-yield planting method for yellow corn. The high-yield planting method is characterized in that when the yellow corn is planted, ridges are arranged at equal intervals, the planting distance between every two continuous holes is 3055 cm, the planting distance between every two continuous holes and another two continuous holes is 60-75 cm, and the mode that two corn plants grow in one hole is conducted on corn in different growth periods in an intercropping mode. The high-yield planting method for the yellow corn can conform to the growth habit of the corn, adapts to corn growing characteristics; and through the method, ventilation and light permeating requirements needed in the whole growth process can be met, the planting number of the corn is increased under the condition that the planting density of the corn is lowered, and the purposes of fertilizer saving and yield increasing are achieved by using the biodiversity principle and other principles.

The present invention discloses a mausoleum with dragon-type building structure. It has a hollow multi-layer structure, and is built up along mountain ridge, and in the "dragon" body the rooms for laying cinerary caskets are distributed, and at the same time a viewing platform is built up on the head of the "dragon-type" structure for viewing natural scenery. Said invention can better utilize land resources, and possess profound cultural connotation.