II.--DETERMINSM AND DUTY

Selective Catalytic Reduction for Heavy-duty and Light-duty Vehicles

Whereas previous emission limit values could be met by primary engine control measures, the limits for PM and NOx from heavy duty engines in 2008/09 (Euro V) and diesel passenger cars in 2014/15 (Euro 6) represent a challenge for the developers of diesel engines and vehicles. Due to the thermodynamics of the Diesel combustion process, it is difficult to optimise the combustion process for both ...

Civic Duty and Political Advertising∗

Should voter awareness policies and get-out-the-vote movements be promoted? We address this question using a model of political advertising that incorporates both the mobilization and the persuasion aspects of advertising. An uncertainvoter model of two-candidate political competition is proposed, where candidates have fixed symmetric ideological positions and unknown qualities and can use poli...

Duty hours and professional responsibility.

Cet article se trouve aussi en français à la page 803. Dear Colleagues, By the time you read these lines, a new cohort of medical graduates will have begun their residencies in family medicine and other specialties. Your College is one of the organizations represented on a steering committee addressing resident duty hours, hosted by the Royal College of Physicians and Surgeons of Canada, with f...

RECQ1's double duty

Why are cel ls so tense? C ells might be able to rapidly adjust their stiffness by contracting myosin motors, according to a new cytoskeleton model from Daisuke Mizuno, Christoph Schmidt (Georg-August-Universität, Göttingen, Germany), and colleagues. Cells adjust their rigidity when they interact with the extracellular matrix, for example, and when an external force acts on them. To mimic cytos...

It's our duty!