Contamination and materials degradation are among the highest risks associated with the deployment of high intensity solid-state laser systems. Although high intensity laser induced optical damage has been studied for decades, the field is still in its infancy. There is little concrete information concerning the relationship of contamination and laser induced optical damage. Further, little inf...

INTRODUCTION Food-borne infections and intoxications remain one of the most important public health issues globally, both in developing and in developed countries. Numbers of reported outbreaks of food-borne diseases and diseased people are constantly growing. For instance, a total of 320,000 of cases of food-borne diseases, caused by only 6 most prevalent bacterial pathogens (non-typhoidal Sal...

Laser and instrument systems used for space flight have extreme requirements for cleanliness. Many of these systems specify or require cleanliness target values approaching one monolayer of non-volatile residue (NVR) or even less in some cases. This opens up a completely new series of challenges that are added to the challenges facing contamination control and contamination analysis personnel. ...

head lice contamination has a global distribution and it is regarded as a main health problem throughout the world. given the importance of physical health of students and head lice prevalence at school age, we aimed to examine the rate of head lice contamination among primary school students in the villages of abadan in 2012. in this descriptive study, 624 students were randomly selected from ...

The detection of contaminants in food products after packaging by a non-invasive technique is serious need for companies operating the industry. In recent years, many technologies have been investigated and developed to overcome intrinsic drawbacks currently employed techniques, such as X-rays metal detector, offer more appropriate solutions with respect techniques academic domain terms acquisi...

In this paper, a secure communication model for cognitive multi-user massive multiple-input multiple-output (MIMO) systems with underlay spectrum sharing is investigated. A secondary (cognitive) multi-user massive MIMO system is operated by using underlay spectrum sharing within a primary (licensed) multi-user massive MIMO system. A passive multi-antenna eavesdropper is assumed to be eavesdropp...