The chromatic polynomial P (G; k) is the function which gives the number of ways of colouring a graph G when k colours are available. The fact that it is a polynomial function of k is essentially a consequence of the fact that, when k exceeds the number of vertices of G, not all the colours can be used. Another quite trivial property of the construction is that the names of the k colours are im...

Migraine headache is commonly associated with signs of exaggerated intracranial and extracranial mechanical sensitivities. Patients exhibiting signs of intracranial hypersensitivity testify that their headache throbs and that mundane physical activities that increase intracranial pressure (such as bending over or coughing) intensify the pain. Patients exhibiting signs of extracranial hypersensi...

Summary While many species are affected by trafficking in their products, some take centre stage, including elephants, rhinos, pangolins and helmeted hornbills, we report an open trade that continued these items eastern Myanmar between 2015 2020. We surveyed Myanmar’s border towns of Tachilek Mong La, recording volumes, prices, origins routes. observed c . 16 500 ivory items, 8 hornbill casques...

INTRODUCTION Nosocomial infections remain a major challenge to the health care system and result in significant mortality, morbidity, and economic burden. Intensive care unit (ICU) patients are at great risk of acquiring nosocomial infections. The objective of this study was to determine the contamination rate (bacterial and fungal) of the health care workers' (HCWs') hands and ring in ICU. M...

Ankle bracelets (anklets) imposed by law to track convicted individuals are being used in many countries as an alternative to overloaded prisons. There are many different systems for monitoring individuals wearing such devices, and these electronic anklet monitoring systems commonly detect violations of circulation areas permitted to holders. In spite of being able to monitor individual localiz...

CONTEXT This study is part of the Methods of Assessing Response to Quality Improvement Strategies (MARQuIS) research project on cross-border care, investigating quality improvement strategies in healthcare systems across the European Union (EU). AIM To explore to what extent a sample of acute care European hospitals have implemented patient safety strategies and mechanisms and whether the imp...

Transmission electron microscopes fitted with field-emission guns (to provide coherent electron waves) can be adapted to record the magnetic fields within and surrounding nanoparticles or metal clusters, for example, the lines of force of a nanoferromagnet encapsulated within a multiwalled carbon nanotube. Whereas most chemists are aware that electron microscopy readily identifies crystallograp...

The authors present their experience in applying quantum electronic devices patients undergoing lower limb amputations. Object. To develop a technique for potentiating the traditional multimodal anesthesia by optoelectronic with wavelength 650 nm (red range) and 470 (blue (manufactured Russia) amputation of extremities. Material methods. Multimodal was performed 48 (11 women 37 men) aged 68–89 ...

Egypt has no domestic silver ore sources and is rarely found in the Egyptian archaeological record until Middle Bronze Age. Bracelets tomb of queen Hetepheres I, mother pyramid builder king Khufu (date reign c. 2589–2566 BC), form largest most famous collection artefacts from early Egypt, but they have not been analysed for decades. We samples Museum Fine Arts, Boston using bulk XRF, micro-XRF,...