locust
1. Recommended fine varieties (types): Eucommia ulmoides and Eucommia ulmoides, based on the weight and thickness of the endothelium that can be used for medicinal purposes and extracting gum, it is better to use Eucommia ulmoides. 2, seedling breeding techniques: Sowing seedlings can be carried out in the winter or early spring, seedlings mother tree should choose a strong growth and development, smooth bark, unskinned use of the 20-year-old about the prime of the tree, when the majority of leaves fall off before and after the frost, when the fruit is fully mature Collection, fruit ripening characteristics are chestnut brown, shiny, full, endosperm white, cotyledons flat cylindrical, beige, collected in a ventilated place to dry, storage in indoor or outdoor wet sand; can be drilled, row spacing 25-30 cm, 40-50 grains per metre of ditch, 1.5-2 cm of fine manure or coke soil, generally 5-10 kilograms per acre; in addition, the method of cutting (using the spring of the year) Branches with young leaves are cut into 7-10 cm long cuttings, leaving 3 axillary buds for each cutting, and cutting each leaf for half-cutting and root cutting. 3. Garden Technology: Eucommia is a positive tree species. Therefore, it is necessary to build a garden at the foot of the south slope or southeast slope or in the middle and lower part of the mountainous soil. Afforestation time can be winter or spring, and the planting density is in the forest. Bark and seeds were obtained) and headwood forest operations (operating to peel medicinal Eucommia ulmoides bark) plant spacing can be 2-3 to 3-4 meters, and dwarf forest operations (the purpose is to obtain yield-rich leaves and branches). Can use 2H 2 meters. 4. Breeding techniques: After 2-3 years of afforestation, young and young forests must be managed for tending. Before weed closure, one or two times of cultivating and weeding should be carried out, and cake fertilizer (or urea 15-20 kg/mu) should be chased; forest age is 10 After the year or the closure of the forest, the thinning of the forests in the Qiaolin forest should be conducted for the first time. The main growth and development of the male plants should be removed, and the percentage of the female plants should be 85%. The second thinning is 15-20. In the past year, mainly the bentwood with scarce and poorly-dried female trees was culled; for the first-wood operations, thinning was done for about 8 years, aiming at improving the lighting conditions in the forest and maintaining the density of standing trees. For 45-60 plants/mu, thinning should be carried out in spring and summer to reduce the cutting of the cuttings, while the TECO operation is to use the characteristics of strong germination of the Eucommia ulmoides and artificially make it shrub-like. Its operation method is when the seedlings are planted. After the third year of the winter, cut off and leave it to dry to a height of 30-50 cm. After fertilization, cut off the soil (it can also be cut off from the ground 5 cm before germination); after that, cut the branches once every three years. When the germination capacity is declining, it can be completely dug up and used. In addition, in order to change the cutting habits of the past used in the bark of Eucommia bark, in recent years, the use of girdling regeneration technology (selected normal trees with a breast diameter of more than 12 cm, from early May to mid July, at a temperature of 21-25 °C, 80% relative humidity Above the sunny or cloudy days, from the normal branch below 10 cm to the trunk 20 cm above the ground, adopt the “gong†word girdling method, the depth is limited to the bark, does not bump and contaminate the peeled xylem, after peeling The kraft paper will be wrapped in the air and will be removed after 1 week. As for the extraction of Eucommia ulmoides leaves, it will include medicinal use. Before and after the frost, the leaves are still harvested with high quality green, which will affect the growth and development too early. Drugs, post-harvest drying to make the water content below 10%, keep dry green), tea use (harvest time similar to medicinal, pick fresh leaves and immediately kill, fried weight loss to about 30%, and then spread out to dry) , plastic (Eucommia leaf with the increase in the degree of maturity, it is generally appropriate in November after the yellow leaves off the best pick-up). 5. Pest Control: Blight (select loose, fertile, well-drained non-vegetables, cotton, potato and other land as nurseries, and disinfect 3-4 kilograms of 40% formaldehyde solution per acre during site preparation, and use 50% more bacteria for the onset of disease. Ling 1000 times liquid irrigation), root rot (the incidence period is 50% thiophanate 1000 times watering, and the implementation of rotation), Leopard wood cocoon moth (pay attention to clearing the garden in winter, eliminate overwintering pests, in early June before the adult oviposition The trunk was painted with a whitening agent and the larvae were incubated and sprayed with 40% dimethoate emulsion 400-600 times on the trunk. Surgical gowns, as necessary protective clothing during the surgery, are used to reduce the risk of medical personnel coming into contact with pathogenic microorganisms, and can also reduce the risk of pathogenic microorganisms spreading between medical staff and patients. It is a safety barrier for sterile areas during surgical operations . Surgical Gown Surgical Gown,Surgical Protection Gown,Surgical Protection Clothing,Non Woven Isolation Gown Guangzhou Aikangli Medical Technology Co., Ltd. , https://www.aikanli.com
* Scope of use of surgical gowns: can be used for surgical operations, treatment of patients; anti-epidemic inspection in public places; disinfection in virus-contaminated areas; can also be widely used in military, medical, chemical, environmental protection, transportation, epidemic prevention and other fields.
* Classification of Surgical Gown
1. Cotton surgical gown. Medical institutions are the most widely used and most dependent surgical gowns. Although they have good breathability, they have poor barrier protection. The cotton material is prone to shedding of flocs, so that the annual maintenance cost of the ventilation equipment of the hospital will also have a large burden.
2. High density polyester fiber fabric. This type of fabric is mainly composed of polyester fiber, and conductive materials are embedded on the surface of the fabric, so that the fabric has a certain antistatic effect, thereby improving the comfort of the wearer. This kind of fabric has certain hydrophobicity, it is not easy to produce cotton de-flocking and the advantages of high reuse rate. This kind of fabric has good antibacterial effect.
3. PE (polyethylene), TPU (thermoplastic polyurethane elastic rubber), PTFE (teflon) multi-layer laminating film composite surgical gown. The surgical gown has excellent protection performance and comfortable breathability, which can effectively block the penetration of blood, bacteria and even viruses. But the popularity in China is not very wide.
4. (PP) polypropylene spunbond fabric. Compared with the traditional cotton surgical gown, the appearance of this material is because of its low price, and has certain advantages such as antibacterial and antistatic, so it can be used as a material for Disposable Surgical Gowns, but the ability of this material to resist hydrostatic pressure is relatively Low, and the blocking effect of the virus is relatively poor, so it can only be used as a sterile surgical gown.
5. Water spur cloth composed of polyester fiber and wood pulp. Generally only used as a material for disposable surgical gowns.
6. Polypropylene spunbond-meltblown-spun. Adhesive composite non-woven fabric (ie SMS or SMMS): This material is a high-quality product of a new type of composite material. Hydrostatic pressure capacity. SMS non-woven fabrics are widely used at home and abroad, often used to make high-grade surgical gowns.
* Structural design of surgical gown
New protective surgical gown
By providing a protective collar, the neck of the operator can be kept warm. By setting a hand guard pocket, it is helpful for the operating staff to temporarily put their hands in the hand guard pocket while waiting during the operation, which plays a protective role, and is more in line with the principles of aseptic operation and occupational protection.
By setting the contraction cuff, it is helpful to fit the cuff to the wrist, prevent the cuff from loosening, and prevent the glove from slipping out during the operation, which may expose the operator's hand to the glove.
The design of the new humanized protective surgical gown has been improved in the key areas of the surgical gown. The two areas of the forearm and chest area are double thickened, and there are hand pockets in front of the chest and abdomen. By setting reinforcement tablets (double-layer structure) in key areas, it is helpful to improve the ability of surgical gowns to resist water permeability and improve safety.
* Performance of surgical gown
The performance of surgical gown mainly includes: barrier performance, comfort performance.
1. Barrier performance mainly refers to the protective performance of surgical gowns. Its evaluation methods mainly include hydrostatic pressure, water test, impact penetration, spraying, blood penetration, microorganism penetration and particle filtration efficiency.
2. Comfortable properties include: breathability, water vapor permeability, drape, quality, surface thickness, electrostatic properties, color, reflectivity, odor and skin sensitization, and the effects of design and sewing in garment processing. The main evaluation indicators are air permeability, moisture permeability and charge density.
* Why is the surgical gown green?
In the operating room, if doctors, nurses and other staff wear white coats, because the doctors always see bright red blood stains during the surgery, for a long time, occasionally turning their attention to the companion's white coat You will see spots of "green blood stains", which will confuse vision and affect the surgical effect. The use of light green fabric for surgical gowns can not only eliminate this green illusion due to visual complementary colors, but also reduce the fatigue of the doctor's optic nerve, thereby ensuring the smooth operation of the operation.