B. Make preparations
1) Thorough pond clearing pond shrimp stocking thoroughly with lime or bleaching powder disinfection, kill muddy, wild fish, frogs and so on.
2) Set up the attachments and hidden objects in the pool. Tree technology, mesh, tile, etc., and plant the aquatic plants for attachment of the shrimp seedlings. Attachment and concealment accounts for less than 20% of the pond area.
3) Fertilizer Water quality The shrimp seedlings are stocked with 3 to 5 days before stocking, 30 to 50 centimeters of water, 700 to 1,000 kilograms of cattle, sheep, and horse dung to cultivate feed organisms.
C. Stocking of shrimps and shrimps will be released at the end of April and May. When the water temperature is stable above 20°C, the shrimps should be stocked. The stocked shrimps should have a healthy, disease-free and neat specifications. Single Macrobrachium rosenbergii can be stocked with 2 to 3 cm of 1000 to 15,000 tails per acre; mixed polyculture of fish and shrimp to shrimps, 8,000 to 1000 tails of Macrobrachium rosenbergii with 2 to 3 cm in size per acre. 50 to 120 tails of eels that don't compete with giant crabs.
D. Science Feeding Macrobrachium rosenbergii is omnivorous, zooplankton, aquatic insects, aquatic plants, and algae; cakes, rice bran, bran, etc. can all be ingested. The egg yolks, bean dregs, and soy milk are generally fed within 20 days after seedlings are released. From June to September, artificial diet pellets are fed. The feed protein content should be above 30%. The grain size and length of the feed should be 0.3 cm and 1 to 2 cm, respectively. Generally, powdery feed should not be fed to feed the macrobrachium. Can be fed 2 to 3 times a day, early and late (or midnight) once a day, night feeding amount can account for 2/3 of the total amount of feeding. In the main growing season, the daily feed may account for 5% to 7% of the total pond shrimp weight. It is necessary to insist on regular, quantitative, qualitative feeding, splashing evenly around the ground, and increase or decrease according to the weather, shrimp ingestion, and activities.
E. Management of Water Quality Macrobrachium rosenbergii has high requirements for water quality, so it is necessary to strengthen the regulation of water quality. The shrimps should maintain the water level at 40 to 60 cm for 1 month after entering the pool, and gradually deepen the water level after 8 to 9 months. To the deepest. When water injection, use nylon mesh bags to strictly filter and prevent the enemy from entering the pool. In the summer, you can change the water twice a week, changing 15 to 20 centimeters each time. And we must set up an aerator to regulate the water quality. In general, the pool water is light green and oil green. It is found that the water quality is not suitable and a large amount of water is changed in time. The transparency of water in the growing season can be 25 to 35 cm. And we must pay attention to the timely removal of dirt and prevent sewage and pesticides from entering the pool.
F. Strengthen disease prevention. Sprinkle up to 20ppm of lime every 1 month, or spill 1ppm of bleaching powder, to prevent disease.
• Warmed humidified air is better than cold, dry gases even in short cases.
When a patient`s trachea is intubated or a supraglottic airway device is placed in situ, the normal warming, humidifying and filtering functions of the upper airways are bypassed. Hence, gas delivered to the patient needs to be artificially conditioned to replace these lost functions Heat and moisture exchangers (HMEs) are intended to conserve a portion of the patient`s exhaled heat and moisture, and condition inspired gas by warming and humidifying it. Breathing system filters are intended to reduce the transmission of microbes and other particulate matter in breathing systems.
Devices that contain both filters and HME are called Heat Moisture Exchanger Filters (HMEFs). It is not ideal to distinguish these two common filters with "static" and "folds", because these two types of filters rely on electrostatic charge to a certain extent to keep the particles in the filter material, two types All materials can be folded. The main difference between the two types is the density of the fibers. For "electrostatic" filter materials, the density of the fibers is relatively low, and the electrostatic charge (fiber or triboelectric charge) on the fibers is high. For "pleated" filters, the density of the fibers is high: this leads to increased resistance to gas flow; the pleated material increases the surface area, thereby reducing the resistance. This type of filter is also called "hydrophobic" (because the surface of the filter material repels water) or "mechanical". In this review, the terms "electrostatic" and "pleat" will be used to distinguish these two types of filters.
Disposable Breathing Filter \Airway Management
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