Ozone mystery laid to rest

Osler vindicated: the ghost of Flexner laid to rest.

The expressivist objection to prenatal diagnosis: can it be laid to rest?

Received 24 May 2007 Accepted 24 May 2007 Tom Shakespeare’s book Disability rights and wrongs is very rich and interesting and ought to be compulsory reading for anyone interested in the relation between disability and medical ethics. In my short contribution to this symposium on the book, I will focus on a particular aspect of his discussion of prenatal diagnosis and termination of pregnancy. ...

The Mystery of Sleep: Why a Good Night’s Rest Is Vital to a Better, Healthier Life

animals are typically portrayed as mindless killing creatures: everybody knows of the “lifeless eyes” of a great white shark or the “killer instinct” of a wolf. However, closer investigation of these animals often reveals complex social, emotional, and psychological features that are often ignored by us fearful, fleshy humans. In this book, G.A. Bradshaw takes readers on a deep dive into the mi...

Preliminary Design of Spacecraft Attitude Control with Pulse-Width Pulse-Frequency Modulator for Rest-to-Rest Maneuvers

In this paper, the preferred region of design parameters for quasi-normalized equations of single-axis attitude control of rigid spacecraft using pulse-width pulse-frequency modulator (PWPFM) is presented for rest-to-rest maneuvers. Using the quasi-normalized equations for attitude control reduces the system parameters, that is, the moment of inertia, the filter gain, and the maximum torque of ...

A mystery about to

The study of spin glasses started some thirty years ago, as a branch of the physics of disordered magnetic systems. In the late 1970’s and early 1980’s it went through a period of intense activity, when experimental and theoretical physicists discovered that spin glasses exhibit new and remarkable phenomena. However, a real understanding of the behaviour of these systems was not achieved and li...