1. Seed selection: Prince, Grande, Champion, Apollo and other generation hybrids.
2. Nursery time: Asparagus can be raised in the open field from March to September. It can also be raised in the winter with a greenhouse, and can be raised in the southern area.
3. Seed soaking and germination: The mother liquor of new high-fat film is generally diluted 5-10 kg of liquid. After soaking, remove the seeds and dry them. It can keep warm, moisturize, and swell, increase the germination rate of seeds, and make seedlings strong. Repel underground pests and isolate virus infections. It can also be mixed with seed coating agent.
4. Sowing method: choose sand loam soil preparation, sow 20 square meters for every 50 grams of seeds, irrigate the bottom water, line with plant spacing of 10 cm, single seeds are seeded in the center, covered with 2 cm thick sieved fine soil.
5. Transplanting and planting: It is better to transplant asparagus from June to July, because the field management time is short, it can be harvested around the Spring Festival of that year, and the effect is quick. It can also be transplanted with a one-year-old seedling, which is large and long, and has a higher yield than the spring-raised seedling that year.
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and are supplied sterile.
airways are single use, latex free and are supplied sterile.
Most endotracheal tubes today are made of polyvinyl chloride, but special tubes made of silicone rubber, latex rubber, or stainless steel are also widely used. Most tubes have an inflatable cuff that seals the trachea and bronchial tree to prevent air leaks and inhalation of stomach contents, blood, secretions and other fluids. Catheters without a capsule may also be used, but their use is mainly limited to pediatric patients (in young children, the cricoid cartilage is the narrowest part of the pediatric airway and usually provides an adequate seal for mechanical ventilation).
Types of endotracheal intubation include oral or nasal, with or without a capsule, prefabricated (e.g., RAE (Ring, Adair, and Elwyn) tubes), reinforced tubes, and double-lumen endobronchial tubes. For human use, tube ID sizes range from 2 to 10.5 mm. Sizes are chosen based on the patient's body size, with smaller sizes used for pediatric and neonatal patients. Tubes larger than 6 mm in diameter usually have inflatable cuff. Originally made of red rubber, most modern tubes are made of polyvinyl chloride. Those placed in the laser field could be flexible metals. Robertshaw (and others) developed a double-lumen endobronchial catheter for thoracic surgery. These allow ventilation from one lung while the other collapses, making surgery easier. After the surgery, the deflated lung is re-inflated to examine the fistula (tears). Another type of endotracheal tube has a small second luminal opening above the inflatable cuff that can be used for aspiration in the nasopharyngeal area and above the cuff to aid in extubation (removal). This allows the aspiration of secretions located above the cuff, which helps reduce the risk of chest infection in patients with prolonged intubation.
Disposable Endotracheal Tube
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