We are interested here in homomorphisms of undirected graphs and relate them to graph degeneracy and bounded degree property. Our main result reads that both in the abundance of counterexamples and from the complexity point of view the Brooks's theorem and ÿrst ÿt algorithm are the 'only' easy cases.
The authors present a case of occupational lung damage from exposure to dust containing aluminium. The first detected objective pathological finding was that of dispersed micronodules in the lungs seen in a chest radiograph. The final diagnosis of pulmonary aluminosis was established after three years of gradual exclusion of other interstitial lung… (More)
Sandblasting is traditionally known as a high-risk profession for potential development of lung silicosis. Reported is a case of a sandblaster with confirmed accelerated silicosis, a condition rather rarely diagnosed in the Czech Republic. Initially, the patient presented with progressive dry cough and exertional dyspnoea. In the early diagnostic process, a… (More)