Defining discovery: Is Google Scholar a discovery platform? An essay on the need for a new approach to scholarly discovery.

This essay discusses the concept of discovery, intended as content discovery, and defines it in the new context of Open Science, with a focus on Social Sciences and Humanities (SSH). Starting from the example of Google Scholar, the authors show that this well established service does not address the current needs, practices, and variety of discovery. Alternatives in terms of technical choices, features, and governance, do however exist, offering richer and more open discovery.

Heart involvement in systemic sclerosis: a combined echocardiographic and scintigraphic study.

The aim of this study is to investigate systemic sclerosis (SSc) patients without clinically evident heart disease for cardiac abnormalities. SSc patients and age- and sex-matched healthy controls from the hospital staff underwent transthoracic echocardiography for the assessment of the left ventricle (LV) morphology and function and estimation of the pulmonary artery systolic pressure (PASP). Patients further underwent stress-rest myocardial perfusion imaging (MPI) scintigraphy by single-photon emission computed tomography (SPECT).

Multiple cerebral mycotic aneurysms due to left atrial myxoma: are there any pitfalls for the cardiac surgeon?

Acute cerebral embolism or cerebral aneurysm formation as a consequence of left atrial myxomas has been well documented, but the formation of multiple cerebral aneurysms resulting from atrial myxoma is a very rare neurological complication. We present the case of a 72-year-old-woman with a cardiac myxoma who suffered multiple cerebral mycotic aneurysms. After experiencing both vertigo and a sudden collapse accompanied by loss of consciousness, she underwent cerebral computed tomography (CT) and magnetic resonance imaging (MRI) examinations, which revealed multiple cerebral mycotic aneurysms of various dimensions and a large cyst, as a result of a previous haemorrhage.

Afternoon nap, meal ingestion and circadian variation of acute myocardial infarction.

A two-peaked circadian variation in acute myocardial infarction has been demonstrated, with a morning peak attributed to physiological changes produced by nocturnal sleep. To investigate the causes of the secondary peak, we compared meal habits and circadian variation in patients with acute myocardial infarction who were accustomed to afternoon naps (group A) to those who were not (group B). One hundred and fifty two patients formed group A and 65 group B.