EDITOR: We wish to report a potentially fatal critical incident that occurred during an elective operating theatre list. A similar problem [1] has been recently highlighted by the MHRA but without the emphasis of its potentially fatal nature (Fault in Draeger Vapor 2000/D-Vapor Vaporizer series with the interlocking device, MDA/2006/030) [2]. This series of vaporizers for isoflurane and sevo-fl...

Potentially fatal asthma (PFA) is a designation used to identify patients with asthma who are at increased risk of a subsequent fatality.’ This diagnosis is dependent on patients presenting to the health care system because the diagnosis is based on major asthma events as listed in Table 1. Some fatalities in Chicago have occurred in patients who have not received medical care and therefore can...

background: the mapping of the malignization mechanism is still incomplete, but oxidative stress is strongly correlated to carcinogenesis. in our research, using fuzzy logic, we aimed to estimate the oxidative stress related-cancerization risk of the oral potentially malignant disorders. methods: serum from 16 patients diagnosed (clinical and histopathological) with oral potentially malignant d...

background : acanthamoeba- bacteria interactions enable pathogenic bacteria to tolerate harsh conditions and lead to transmission to the susceptible host. the present study was aimed to address the presence of bacterial endosymbionts of acanthamoeba isolated from recreational water sources of tehran, iran. to the best of our knowledge this is the first study regarding occurrence of bacteria in ...

This paper presents an approach to formal requirements speci cation of embedded systems. The speci c demands of a speci cation for command and control systems are addressed. The proposed method allows various views of a system, like conventional methods. The added value lies in the fact that the relationship between the views is speci ed formally, and consistency between views can be analyzed f...

Neonaticide is defined as killing of a newborn within the first 24 hours of life. Neonaticide happens globally. The characteristics and motives of Chinese neonaticide are unknown. This study is committed to outline Chinese neonaticide offenders’ characteristics and primary motives. Neonaticide cases in Shanghai Public Security Bureau (SPSB) were reviewed and analyzed. All offenders were domesti...

We present an algorithm for visibility preprocessing of urban environments. The algorithm uses a subdivision of line space to analytically calculate a conservative potentially visible set for a given region in the scene. We present a detailed evaluation of our method including a comparison to another recently published visibility preprocessing algorithm. To the best of our knowledge the propose...

In this paper, we describe how to construct physical computer network topologies which can support the establishment of overlays that reduce or increase the distances between nodes. Reducing pairwise distances (i.e., compression) implies that the overlay enjoys significantly lower inter-node latencies compared to the ambient physical network; such an overlay can be used to implement a “high-per...

We have measured spectral albedo, as well as ancillary parameters, of seasonal European Arctic snow at Sodankylä, Finland (6722 N, 2639 E). The springtime intensive melt period was observed during the Snow Reflectance Transition Experiment (SNORTEX) in April 2009. The upwelling and downwelling spectral irradiance, measured at 290–550 nm with a double monochromator spectroradiometer, revealed al...

We present a detailed description of a machine-assisted veriication of an algorithm for self-stabilizing mutual exclusion that is due to Dijkstra Dij74]. This veriication was constructed using PVS. We compare the mechanical veriication to the informal proof sketch on which it is based. This comparison yields several observations regarding the challenges of formalizing and mechanically verifying...