Biological Environmental Influences Research Articles

Research on military electrical and electronic products based on the influence of biological environment

The biological environment condition has a very important influence on the effective preservation of military electrical and electronic products. In this paper, the research on military electrical and electronic products based on the influence of biological environment was carried out, and the main contents of the biological environment were introduced. At the same time, the influence factors and research methods of biological environment on military electrical and electronic products were expounded and the research results were analysed and discussed. The results show that the adverse effects of mold on military electrical and electronic products are high under the condition of high temperature. The author believes that the main method to reduce the adverse effects of biological environment on military electrical and electronic products is to control the storage temperature.

���������� ���������� �������������� �������

Purpose. To substantiate the strength properties and wear resistance of the hip implant made of carbon material. Materials and Methods. We have developed a construct of the hip carbon implant; picked and used the durable biocompatible carbon material during the implant making; studied and presented the properties of the materials being used. The implant consists of a stem, a cup and a head. We mounted all the details as a unified medical product in a free condition during surgery. The implant stem is made of carbon plastic and firmly fixed in femur by cementless fitting. The implant head is made of firm fine-grained graphite of MPG-7 trademark, and it is attached to the stem by cone fitting. The implant cup is made of MPG-7 graphite and fit into the acetabulum with cement. We used slide fitting to attach the cup to the head. Results. The friction coefficient for graphite-graphite shown to be 0.1, erosive wear within 20 hours of uninterrupted abrasion with 100-kg load (weight of a person) to be 0.453×10-9 m/m, thereby allowing to suggest the product wear resistance for one hundred years. Conclusion. The material proposed for implantation is highly biocompatible, non-toxic, it doesn’t change under the influence of biological environments, is not subjected to corrosion when contacting with living tissue, as well as it is characterized by the lack of fatigue stresses, the low friction coefficient and wear amount, the potential to stimulate the growth of biological tissue. None of the currently used implanted materials possesses such a set of properties.

The influence of biological environment on the appearance of silver-coated implants

We’ve built this digital research platform to provide academics everywhere with fast, stable and secure digital access to our library of over 110,000 scholarly books and 800,000 journal articles. We’ve tested the platform in close cooperation with leading academic institutions. If you have any questions or you notice something doesn’t quite work as it should, please visit our <a href="/publishing/faq?lang=en" class="text-primary">Help/FAQ</a> page and let us know.