Evaluation of Hungarian Wines for Resveratrol by Overpressured Layer Chromatography

A method, including solid phase extraction sample preparation, overpressured layer chromatographic separation and subsequent densitometric evaluation, was developed for measurement of total resveratrol (cis- and trans-isomers) content of wine. The amount of resveratrol was determined in wine samples from different winemaking regions of Hungary. The total resveratrol was high in Hungarian red wines (3.6–11 mg/L), and much lower in white ones (0.04–1.5 mg/L)

Fault diagnosis for uncertain networked systems

Fault diagnosis has been at the forefront of technological developments for several decades. Recent advances in many engineering fields have led to the networked interconnection of various systems. The increased complexity of modern systems leads to a larger number of sources of uncertainty which must be taken into consideration and addressed properly in the design of monitoring and fault diagnosis architectures. This chapter reviews a model-based distributed fault diagnosis approach for uncertain nonlinear large-scale networked systems to specifically address: (a) the presence of measurement noise by devising a filtering scheme for dampening the effect of noise; (b) the modeling of uncertainty by developing an adaptive learning scheme; (c) the uncertainty issues emerging when considering networked systems such as the presence of delays and packet dropouts in the communication networks. The proposed architecture considers in an integrated way the various components of complex distributed systems such as the physical environment, the sensor level, the fault diagnosers, and the communication networks. Finally, some actions taken after the detection of a fault, such as the identification of the fault location and its magnitude or the learning of the fault function, are illustrated

A retrospective evaluation of epidemiological, clinical and laboratory features of brucellosis in 230 patients in Hamadan, Iran: a brief report

Background: Brucellosis is one of the most common infectious diseases in Iran with very different clinical manifestations. Methods: In this retrospective descriptive study, all patients with brucellosis, who were admitted in Farshchian Hospital in Hamadan, Iran in 2005 to 2010, were enrolled in the study. The data were collected from the patients' medical records and were entered in forms for analysis. Results: A total of 230 patients with brucellosis, including 130 (56.5%) male and 100 (43.5%) female patients with a mean age of 40.84±20.29 years, who mostly (72.2%) lived in rural areas were enrolled in the study. Outbreaks were most common in spring and summer and the main route of transmission was consumption of contaminated dairy products (60.3%). The most common symptoms were fever (77.4%), arthralgia (70%), sweating (47%), malaise and fatigue (46.5%). Arthritis and epididymo- orchitis were seen in 121 (52.9%) and 48 (8.20%) patients, respectively. CBC analysis showed leukocytosis in 20.8% of the participants. ESR rise was noted in 59.5% of the patients and 52.9% had positive CRP. Conclusion: Given to various clinical presentations, brucellosis should be considered in the differential diagnosis of individuals with chronic fever with or without other organ abnormalities

Assessment of the sensitivity of five different cell lines to the triple poliovirus serotypes

Background: The extensive use of poliovaccines has eliminated the wild-type poliovirus in most parts of the world. These conditions were caused due to the utilization of oral polio vaccine (OPV) and inactive polio vaccine (IPV). Since most of the quality control tests for these vaccines are performed on cell beds sensitive to poliovirus, the identification of the most sensitive cell line to poliovirus is a necessity. Materials and Methods: Five monolayer cell lines (Vero, HeLa, Hep-2, MRC-5 and L20-B) were prepared in cell culture flasks (25 cm2). Then serial dilutions of three types of poliovirus with specified titers were added to each cell beds. The inoculated cells were then incubated at 33°C for 14 days and were monitored daily for the presence of cytopathic effects for polioviruses. Results: The results showed that the sensitivity of L20B cell line to polioviruses was more than the other cells. The result also indicated that the sensitivity of cells to poliovirus was declined in Hep-2, HeLa, MRC-5 and Vero cell lines, respectively. Conclusion: It can be concluded that the L20B, Hep-2 and HeLa cell lines, due to their higher sensitivity to triple poliovirus serotypes are considered for vaccine quality control tests