"Spring and autumn and autumn" is for human health, but for vegetables, you should also pay attention to "Spring." Because the early spring season is warm and cold, the temperature changes greatly. At this time, if it is not properly managed, it will easily cause large fluctuations in the temperature inside the greenhouse, which is not conducive to the normal growth of shed vegetables. The use of heat sources such as heaters and warm air to increase the temperature, although the temperature inside the shed can be adjusted, but the cost is too high. Therefore, the "Spring Festival" at this time is very important.
The so-called "spring æ‚" for shed vegetables, that is, although the outside temperature has risen after the spring, but it is still unstable, do not rush to uncover the film and carry out a lot of ventilation, gradually reduce the temperature difference between the shed and the outside, so that the vegetables can Faster and better adapt to the external environment after film release.
The specific method is: after the temperature rises, depending on the weather changes, the temperature difference between day and night, gradually uncover the film at both ends of the shed and the surrounding area at noon in the sunny weather, and gradually increase the ventilation until the film is finally removed. In the implementation of "Spring", it is necessary to pay attention to the timely ventilation, film uncovering and film removal should be carried out step by step to prevent the temperature inside the shed is too high and lead to "burning seedlings". Practice has proved that the proper use of the "Spring Clam" shed vegetables can avoid the "sparkling seedling" caused by the film being uncovered all at once, and the growth is relatively stable, which can improve the anti-freezing and disease resistance of vegetables.
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Maxillofacial fixation system -- micro-plate for cranial and maxillofacial fracture fixation, designed for the surgical treatment of maxillofacial trauma fractures, suitable for the forehead, nose, orbit, zygomatic, maxillary region, and pediatric craniofacial bones.
The system is an orthopedic surgical instrument for neurosurgical tools. The maxillofacial fixation system includes micro-plates, straight plates, L-shaped plates, T-shaped plates, Y-shaped plates, double Y-shaped plates, H-shaped plates for cranial and maxillofacial fractures. The product range is complete, covering three-dimensional titanium mesh, self-drilling rotary bone screws, anatomical orbital floor plates, orthodontic nails, etc. However, the facial anatomical structure is special, and the screw plate needs to be placed away from the fracture line and avoid important anatomical structures such as nerves and teeth roots. Therefore, the specifications of the screw plate system are required to be as diverse as possible in order to be used in different bone structures, such as different radian, length, and number of screw holes. The bone plates forcranial and maxillofacial fractures are mainly divided into 1.5mm, 2.0mm and 2.4mm systems.
Titanium (including pure titanium and titanium alloy) is the most common material for hard tissue implants. Its elastic modulus and tensile strength are higher than those of human bone, and it is better than other metal materials such as nickel-titanium alloy and cobalt-chromium alloy in terms of biocompatibility and corrosion resistance. Our maxillofacial plate is made of titanium, and the self-tapping screws are mainly made of titanium alloy.
Jaw fractures include maxillary fractures and mandibular fractures. According to whether the fracture trauma is exposed, it can be divided into open fracture and closed fracture. Trauma is the most common cause of jaw fracture, which usually includes hit, traffic injury, fall injury, firearm injury, and a few iatrogenic injuries. All are caused by external forces acting directly or indirectly on the maxillofacial region. With the popularization of motor vehicles, the proportion of jaw fractures caused by traffic accidents has increased year by year, which has become the main cause of jaw fractures. In addition, neoplastic lesions in the maxillofacial region often lead to pathological jaw fractures.
In summary, maxillofacial fixation system has been widely used in clinical maxillofacial surgery, plastic surgery and ENT, and has a relatively mature market.
Titanium Plate,Rectangular Plate,orthognathic surgery,oral and maxillofacial
Jiangsu Aomed Ortho Medical Technology Co.,Ltd , https://www.aomedortho.com