Introduction: Acquired broncho-esophageal fistulas are uncommon and typically malignant in origin.Because of their location, they are difficult to treat and involve complicated repairs with equivocal results.Prior treatment with self-expanding stents when not successful, makes the management even more complicated.Patients and methods: In a three-ye
In this paper, the typical fault estimation and dynamic analysis are presented for a leader-follower unmanned aerial vehicle (UAV) formation system with external disturbances.Firstly, a dynamic model with proportional navigation guidance (PNG) control of the UAV formation is built.Then, an intermediate observer design method is adopted to estimate
In the present study we examined gross changes in the mass of whole adrenal glands and that of the adrenal cortex, as well as the serum corticosterone and glucose level of mature male Wistar rats subjected to three different treatments: animals subjected to chronic restraint-stress, animals injected with lithium (Li) and chronically stressed rats t
Extrachromosomal circular DNA (eccDNA) is a double-stranded DNA molecule found in various organisms, including humans.In the past few decades, the research on eccDNA has mainly focused on cancers and their associated diseases.Advancements in modern omics technologies have reinvigorated research on eccDNA and shed light on the role of these molecule
Lignin is a poorly characterized polymer and its exact properties vary depending on both the species of the plant and its location within the plant.Three classes of lignins taken from alfalfa stem were examined.The investigation was concentrated Frosted Glass Cup on the determination of chemical changes in the lignins during growth and development