A team led by American entomologist Professor Miller designed a genetically modified bacterium that can reduce pest damage to vines. This result is expected to control the large area of ​​vine disease caused by X. fastidiosa bacteria. In the 1990s, California's vineyards discovered for the first time a winged pest. On the surface, it is the damage caused by this pest that causes the grape crop to die due to its loss of water absorption function. However, in fact, the real cause of the death of the vine is a species of X. fastidiosa that lives in the mouth of the pest. . When pests eat into grape crops, it also brings the bacteria to the vines, causing a plant disease called Pierce that causes the leaves and fruits of the grapes to dry, causing the entire vine to die. This deadly disease not only spreads quickly, but its new varieties have also allowed oleanders, asters and apricots to also be transmitted to Pierce's death syndrome. The Miller team did not directly address pest management methods. Instead, they focused on the X. fastidiosa bacterium and designed a "symbiotic" symbiotic with the pests, a species closely associated with the X. fastidiosa bacteria and settled on the grapes. Tree genetically modified bacteria. Laboratory tests have shown that when pests eat crops, they also absorb the designed bacteria, which in turn can deactivate X. fas鄄tidiosa bacteria. Miller believes that because the designed bacteria survive for only a few weeks, it will not have a continuous impact on the environment. Moreover, this design of bacteria will not enter the vine stems and grapes, and will not cause harm to the public. Whether this result can be entered into the crop experiment stage has yet to be approved by the US Environmental Protection Agency and the U.S. Department of Agriculture.
Medical Cleaning Machine is an important guarantee for the quality of cleaning.Any residual organic matter,various body fluids such as female blood,pus,and protein mucus,oil contamination,etc.,can interfere with the effective contact between the microorganisms and the sterilizing medium, and can cause biofilms to affect the sterilization effect.The surgical instruments are classified into common instruments,precision instruments,and laparoscopic instruments according to the type of surgery.Medical cleaning machine during the process of cleaning and disinfecting,the instruments are likely to be damaged and the quality and life of the instruments are affected.Therefore,the correct cleaning method can reduce the number of instruments.The degree of damage will reduce the opportunity for operators to be contaminated,ensure the quality of sterilization,protect the environment and others.In order to improve the quality of equipment cleaning and control infections in hospitals,the State issued relevant documents in 2009,requiring that hospitals use manual cleaning and medical cleaning machine cleaning methods to clean,disinfect and sterilize surgical instruments according to the types of surgical instruments.
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