Anti-volatile loss
Ammonium bicarbonate is an unstable compound that easily decomposes into ammonia, carbon dioxide and water by itself, causing nitrogen loss. The higher the temperature, the faster the decomposition, so it must be sealed tightly during storage. Nitrogen fertilizers and superphosphate are strictly prohibited to be stacked with lime, plant ash, calcium magnesium phosphate fertilizers, etc., to prevent the loss of nitrogen fertilizers and reduce the fertilizer efficiency of phosphate fertilizers.
Prevent moisture absorption
Most solid fertilizers are hygroscopic, and some even agglomerate and deteriorate after being damp. For example, ammonium bicarbonate is easy to absorb moisture and causes ammonia volatilization loss; potassium chloride is hygroscopic and tends to form agglomerates when damp; ammonium nitrate is prone to agglomeration and deliquescence when it absorbs moisture. Therefore, it must be placed in a dry, cool, and ventilated place, and bricks, wooden boards or other things should be used to prevent moisture and waterproof during storage. The height of the fertilizer pile should generally not exceed 2 meters, and the time should not be too long to prevent agglomeration and increase the difficulty of application.
Anti-corrosion poisoning
Chemical fertilizers are generally corrosive, especially those with strong acidity and alkalinity are more corrosive. These fertilizers are currently used in storage. The gas they emit has a pungent odor, which is toxic to the human body, and long-term direct contact should be avoided. Never mix toxic fertilizers with food, feed, agricultural and sideline products and other substances to prevent human and animal poisoning.
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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.medthofixation.com