Maritime accidents in the Yangtze River: A time series analysis for 2011-2020.

The theoretical analysis of maritime accidents is a hot topic, but the time characteristics and dynamics of maritime accidents time series are still unclear. It is difficult to draw a clear conclusion from the cause analysis, so the accident is difficult to be predicted. To bridge this gap, this research analyzes the characteristics and evolution mechanism of maritime accidents time series from the perspective of complex network theory.

[The physicians' view on the utility and impact of oncological guidelines in clinical practice. A survey of Piedmont physicians].

Objective: To determine whether the guidelines (LGR) prepared in Piedmont for the treatment of colorectal and breast cancer reached the targetphysician population and how they were been perceived by physicians.

Design: We invited all Piedmont hospital units that had treated at least 5 cases of colon-rectal or breast cancer in 2002 to participate to the survey. Physicians had to fill a short mail questionnaire.

Effects of the 5-hydroxytryptamine1A receptor agonists, 8-OH-DPAT, buspirone and flesinoxan, upon brain damage induced by transient global cerebral ischaemia in gerbils.

The effects of the 5-hydroxytryptamine1A agonists, 8-OH-DPAT, buspirone and flesinoxan, on the delayed hyperactivity and on the ensuing neuronal degeneration induced by transient global cerebral ischaemia, were studied. In normothermic, male Mongolian gerbils, subjected to 3 min bilateral carotid artery ligation, the locomotor activity was measured 1 day after ischaemia. The neuronal damage was quantified 7 days later using an image analysis system.

Lack of efficacy of 5-HT2A receptor antagonists to reduce brain damage after 3 minutes of transient global cerebral ischaemia in gerbils.

Stimulation of the 5-HT2A receptors by serotonin has been reported to exert an excitatory effect on neocortical neurons in rats and mice, to facilitate ischaemia-induced release of excitatory amino acids and to mediate the vasomotor constrictor component of the response of blood vessels to 5-HT. 5-HT2A receptor antagonists have, therefore, been proposed as potential protectants against the effects of cerebral ischaemia. The aim of this study was to evaluate the effects of two relatively selective 5-HT2A receptor antagonists, ketanserin and ritanserin, on delayed hyperactivity and the ensuing neuronal degeneration induced by 3 minutes of bilateral carotid artery ligation in Mongolian gerbils.