Resistance to silver compounds as determined by bacterial plasmids and genes has been defined by molecular genetics. Silver resistance conferred by the Salmonella plasmid pMGH100 involves nine genes in three transcription units. A sensor/responder (SilRS) two-component transcriptional regulatory system governs synthesis of a periplasmic Ag(I)-binding protein (SilE) and two efflux pumps (a P-typ...

When blood oxygenation level-dependent (BOLD) contrast functional magnetic resonance imaging (fMRI) was discovered in the early 1990s, it provoked an explosion of interest in exploring human cognition, using brain mapping techniques based on MRI. Standards for data acquisition and analysis were rapidly put in place, in order to assist comparison of results across laboratories. Recently, MRI dat...

PURPOSE In recent years, the use of social media such as Facebook has become extremely popular and widespread in our society. Among users are health care professionals, who must develop ways to extend their professionalism online. Before issuing formal guidelines, policies, or recommendations to guide online behaviours, there is a need to know to what extent Facebook influences the professional...

conclusions this method can be appropriate to estimate sensitive issues; however, lack of understanding the method or doubting the confidentiality of the responses can lead to bias in the results. that is to say, if the instructions are introduced better, the level of trusting the method will increase and accordingly more reliable responses can be obtained. more studies under controlled conditi...

the narcotic drugs business find its abusement, nowadays, have been one of the most basic political, economic, health, cultural anti-family disorders in almost all over the world. despite all technologic anti cultural developments, it seems that the tendency and interest of producers, distributors and users of these drugs in all different age levels are growing up increasingly. unfortunately, t...

background microencapsulation is a useful method to prolong a drug release from dosage forms and to reduce its adverse effect (1) among various available methods. the microencapsulation of hydrophilic active ingredients requires the use of a polar dispersing phase such as a mineral oil. acetone/paraffin systems are conventionally used. objectives the current study aimed to investigate two diffe...

Describing web resources using formal knowledge (i.e., creating metadata according to a formal representation of a domain of discourse) is the essence of the next evolution step of the Web, termed the Semantic Web. The W3C's RDF/S (Resource Description Framework/Schema Language) enables the creation and exchange of resource metadata as normal web data. In this paper, we investigate the use of R...

This paper reviews some conceptual and practical issues regarding the application of georeferenced data in epidemiologic research. Starting with the disease mapping tradition of geographical medicine, topics such as types of georeferenced data, implications for data analysis, spatial autocorrelation and main analytical approaches are heuristically discussed, relying on examples from the epidemi...

Due to the proliferation of the infrastructure of communication networks and the development of the relevant technology, intrusions on computer systems and damage are increased, resulting in extensive work on intrusion detection systems (IDS) to find attacks exploiting illegal usages or misuses. However, many IDSs have some weaknesses, and most hackers try to intrude systems through the vulnera...

We propose a formal model for reputation-based trust management. In contrast to credential-based trust management, in our framework an agent’s reputation serves as the basis for trust. For example, an access control policy may consider the agent’s reputation when deciding whether to offer him a license for accessing a protected resource. The underlying semantic model is an event semantics inspi...