Many people think that if the temperature in winter is low, the fertilizer will not evaporate. Is this really true?
Ammonium bicarbonate, ammonia water, ammonium sulfate, etc. in nitrogen fertilizer are not non-volatile under low temperature conditions, but have a slower volatilization rate and a lower amount of volatilization than the summer and autumn high temperature seasons. Ammonium nitrate in nitrogen fertilizer, potassium nitrate and sodium nitrate in potassium fertilizer are prone to combustion and explosion at high temperatures, but if it is stored in the kitchen or heating stove in winter, there is also a great danger. The corrosive nature of superphosphate does not have much to do with the temperature. Cloth bags, sacks, etc., if exposed to superphosphate, will be corroded, and the contents of the bag, such as seeds, salt, soda ash, etc. will deteriorate. When the nitrogen fertilizer is volatilized, it will turn into water vapor in the air, and it will turn into ammonium chloride with strong corrosiveness. When the seeds are encountered, the embryo will lose its sprouting power. When it meets the grain, it will deteriorate. When it encounters pesticide, it will invalidate it. Iron can cause it to corrode and peel off.
Therefore, in the cold winter, fertilizer will also volatilize, do not ignore this when storing.
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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