36 results about "Climate change in Saskatchewan" patented technology

The invention discloses a screen floating device which comprises at least two supporting frames, and the supporting frames are respectively arranged at the two sides of a back-projecting box and fixedly connected with the two sides of a screen; and the supporting frames are respectively provided with a rotating unit, the rotating unit comprises a rotating shaft and a hook, the rotating shaft is arranged on the back-projecting box, and the hook is arranged at the rotating shaft and fixedly connected with the screen. By using the screen floating device disclosed by the invention, two adjacent screens can be mutually tightly combined, so that the minimization of an edge joint between the screens is realized, and then the effect that the edge joint is less than 0.5 mm is achieved. When pluralities of screens are fixed together by using spring nails for clamping, the situation that the edge joints are always minimized can be ensured without being affected by manufacturing tolerances or climatic changes.

The invention discloses a theft-proof shed for bicycles. The shed includes a base, a triangular top cover is arranged at the upper end of the base, drainage trays are formed in the left and right sides of the triangular top cover, the lower ends of the drainage trays are connected with drainage pipes connected with a sewer, a side plate is fixedly installed between the base and the triangular topcover, installation holes are formed in the base, theft-proof bases are fixedly installed in the installation holes, and the lower ends of the theft-proof bases are provided with main lifting devices.According to the theft-proof shed for the bicycles, inclosed storage space can be formed in the shed, and therefore the bicycles in the shed are prevented from being affected by climate changes; limiting rods on limiting push rods extend out and lock wheels of the bicycles, meanwhile, lifting limiting columns rise from the backs of the bicycles and limit the backward moving ability of the bicycles, top limiting columns installed on lifting seats can effectively limit upward moving of the bicycles, and therefore the bicycles are completely fixed and are prevented from being stolen.

The invention discloses a screen floating device which comprises at least two supporting frames, wherein the supporting frames are arranged on two sides of a rear-projection box respectively and fixedly connected with two sides of a screen; the supporting frames are provided with rotating units respectively; each rotating unit comprises a rotating shaft and a rotating piece; the rotating shaft is connected with the screen through the rotating piece; and the rotating shaft is connected with the rear-projection box through a shaft seat. By the screen floating device, two adjacent screens can be combined tightly; therefore, a joint between the screens is minimized and the size of the joint is less than 0.5 millimeters. A plurality of screens are fixed together by using spring nail components, so that the joints can be kept minimum and cannot be influenced by manufacturing tolerance or climatic change.

The invention is a chimney cap which is wind preventing, weatherproof and environment protection, it is made up ball shell, in which the two main parts of the river diversion cones are connected to the smoke chimney; the river diversion cone is made up of the subjacent one and the upper sphere, the subjacent cone angle alpha is 50-90 degrees; according to the diameter of the chimney, twelve to sixty groups of river diversion boards are welded on the external surface of the subjacent cone, the angle beta between the river diversion direction and the axis of the chimney is 40-90 degrees; the gamma between the river diversion direction and the chimney axis is 20-60 degrees; thus the cold air is absorbed from the inlet on the subjacent part of the chimney cap and blended with the smoke, thus the discharged smoke is spiral type, and it has rigidity, thus the smoke can be discharged to the higher space; a ring water gathering box is arranged in the middle of the river diversion cone, and the rain gathered can be discharged fro the drainage pipe; there also has a condensed water gathering slot and drainage pipe on the lower edge of the chimney cap and the upper edge of the inlet of cold air, thus the condensed water can be discharged.

The invention discloses a liquid formulation for trunk injection contained with extract of willow root for landscape plant insect attack and preparation and application thereof. The liquid formulation for trunk injection for landscape plant insect attack comprises the extract of the willow root, emamectin benzoate, surface active agent, anti-decomposing agent and cosolvent. The mass percents of the extract of the willow root, the emamectin benzoate, the surface active agent, the anti-decomposing agent and the cosolvent are 4 to 20%, 0.75 to 1.5%, 1 to 10%, 0.35 to 0.5% and 10 to 20% in sequence, and the margin is water. The liquid formulation for trunk injection for landscape plant insect attack is contained with the extract of the willow root, the insecticidal spectrum is wide, and the functional mechanism is unique, so that the drug resistance of the injurious insects can be solved effectively, features of contacting toxicity, stomach toxicity, systematic action and the like are possessed, drug application is conducted in an anhydrous and non-contact mode, the liquid formulation is safe to human and environment, and purposeful prevention and cure on the injurious insects like hemiptera, coleoptera, homoptera, diptera and some of lepidoptera at the places of forests, urban gardening, gardening trees in a scenic spot, border trees and protection forest are achieved.

The invention relates to a pan-type fry culturing method for Procambrus clarkii, in particular to completing the process of breeding Procambrus clarkii fries in a pan-type container, belonging to the technical field of aquiculture. The method is characterized by comprising the following four steps of fry breeding pan selection, fry breeding preparation, parent shrimp stocking and management and shrimp fry breeding. Only one female shrimp or ovigerous shrimp is put in a fry breeding pan, and therefore, the specification of bred shrimp fries is regular, the cannibalism rate is reduced, and the shrimp fry survival rate is improved. The fry breeding pan is put in a dark fry breeding room, and therefore, the development rate of the sex gland of the female shrimp is high; the fry breeding operation is convenient, and the fry breeding efficiency is higher than that of the traditional fry breeding mode. The pan-type bred fries are not influenced by the change of the external climate; the shrimp fries hatched out on the same day are raised under the same ecological condition, being beneficial to developing mass selection. The invention is suitable for being popularized and applied in domestic Procambrus clarkii breeding farms and scientific research departments.