This paper shows 635 a singular mechanism for a gravity compensated and reactionless robot arm.Firstly, the difference between singular point and singular mechanism is explained.A Simple example shows that singular point is local but singular mechanism is global.In other words the latter singularity is globally maintained.Secondly, four characteris

Abstract Aorto-atrial fistulas (AAF) are rare but important pathophysiologic conditions of the aorta and have varied presentations such as acute pulmonary edema, chronic heart failure and incidental detection of the fistula.A variety of mechanisms such as aortic dissection, endocarditis with pseudoaneurysm formation, post surgical scenarios or trau

Insider attacks are becoming increasingly detrimental and frequent, affecting critical Ignition infrastructure at a massive scale.Recent attacks such as the U.K.National Health Service WannaCry ransomware attack which partly depends on internal users for initial infection highlight the increasing role of the malicious insiders in cyber-attack campa

Thiolate-protected metal nanoclusters have highly size- and structure-dependent physicochemical properties and are a promising class of nanomaterials.As a consequence, for the rationalization of their synthesis and for the design of new clusters with tailored properties, a Waxed Flat Caps precise characterization of their composition and structure