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Pereira, Colombia

Song J.,Office of Scientific Research | Qiu K.,Biogas Institute of Ministry of Agriculture
Advanced Materials Research | Year: 2012

At all-state test of SCR system, the maximum NOx emission value occurs at 1100r/min and 50% of The throttle opening degree condition. The NOx emission value is 2611.08ppm. During simulation research, Influencing factors such as urea spray, reaction temperature, space velocity and NH3/NOx concentration proportion are elaborated. During 0.4s simulation cycle, it shows better atomize results and better homogeneity. The reaction temperature on catalyst is kept at 319°C value which is helpful for continuous SCR reaction. NH3/NO concentration proportion is kept from 0.2 to 0.3, which NOx reduction rate is from 65% to 75% in accordance with test results on the base of 1200r/min condition. The research can provide references for optimization on compact SCR system. © (2012) Trans Tech Publications, Switzerland.

Yuan T.,University of York | Ravenscroft A.,London Metropolitan University | Moore D.,University of Leeds | Zhong G.,Office of Scientific Research
Proceedings - 2010 2nd WRI Global Congress on Intelligent Systems, GCIS 2010 | Year: 2010

This paper reports our sustained and focused research in adopting informal logic dialogue games to develop a computerised system for educational debate. In particular, we consider the usability evaluations of a human-computer debating system we have developed earlier. An expert evaluation and a subsequent user based evaluation have been undertaken. The results from the evaluations are essentially favourable. The evaluations provide evidence for the usability, and the educational and entertainment value of the system. It is anticipated that this work will contribute to the development of human-computer dialogue in general and of computer-based educational dialogue in particular. © 2010 IEEE.

Zhang W.,Office of Scientific Research
Applied Mechanics and Materials | Year: 2012

Based on electromechanical system dynamics model of 3-axis NC positioned, together with the general nonlinear decoupling control theory, the decoupling control method of NC 3-axis positioned is proposed in this paper. In order to control each axis and the simulation of the decoupling control, the Simulink platform of MATLAB soft is used to build a electromechanical system simulation model for NC positioned. The results show that the proposed nonlinear decoupling feedback control method is effective and applicable. © (2012) Trans Tech Publications.

Rodriguez-Morales A.J.,Technological University of Pereira | Rodriguez-Morales A.J.,Office of Scientific Research | Rodriguez-Morales A.J.,University of Los Andes, Venezuela | Rodriguez-Morales A.J.,Aberdeen Group
Recent Patents on Anti-Infective Drug Discovery | Year: 2013

In addition to natural climate variability observed over comparable time periods, climate change is attributed directly or indirectly to human activity, altering the composition of global atmosphere. This phenomenon continues to be a significant and global threat for the humankind, and its impact compromises many aspects of the society at different levels, including health. The impact of climate change on zoonotic diseases has been largely ignored, particularly brucellosis. We here review some direct and indirect evidences of the impact of climate change and climate variability on brucellosis. © 2013 Bentham Science Publishers.

Quintero K.,Growth Science | Duran C.,Growth Science | Duri D.,Growth Science | Medina F.,Growth Science | And 15 more authors.
International Health | Year: 2012

Ascariasis and trichuriasis are highly prevalent parasitoses in tropical countries caused by . Ascaris lumbricoides and . Trichuris trichiura, respectively. Their prevalence is associated with poor sanitation and hygiene, among other biological and social factors. In this study, the associations of household social determinants with these soil-transmitted helminthiases in North Central Venezuela was assessed in the context of a National Study on Human Growth and Development (SENACREDH). This was a probabilistic, stratified, cross-sectional survey with a sample of 3388 individuals that weighted represents 4. 675. 433 inhabitants from the region. The prevalence of ascariasis and trichuriasis was 3.73% and 1.13%, respectively. In the univariate and multivariate analyses, these prevalences were significantly higher in those living in vulnerable houses [adjusted OR (AOR). =. 1.479, 95% CI 1.428-1.532; and AOR. =. 10.519, 95% CI 9.971-11.097, respectively], houses located in rural areas (AOR. =. 2.067, 95% CI 2.035-2.101; and AOR. =. 1.918, 95% CI 1.868-1.970, respectively) and houses with a soil floor (AOR. =. 5.027, 95% CI 4.895-5.162; and AOR. =. 5.190, 95% CI 4.944-5.448, respectively), among other factors. People living in rural households with inappropriate building materials, insufficient basic public services such as water and waste disposal, and surrounding disease-prone environments are at higher risk of acquiring . A. lumbricoides and . T. trichiura infections. © 2012 Royal Society of Tropical Medicine and Hygiene.

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