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91.
Filomena O. Soares Manuel J. Sepúlveda Sérgio Monteiro Rui M. Lima José Dinis-Carvalho 《Mechatronics》2013,23(8):987-996
This paper presents a new line of project based learning in the School of Engineering of University of Minho: the Innovation and Entrepreneurship Integrated Project (IEIP). Four groups, each one composed of students from different engineering integrated master courses – Mechanical, Industrial Electronics and Computers, Polymer, Industrial Management – compete against each other in developing or improving commercial products manufactured by actual industries. There have been so far five editions of the IEIP, with five different companies and five diverse products, however, all these products included components that required knowledge from all the engineering courses involved. Only with the cooperation between the students of the various courses that compose each multidisciplinary team, the success is attainable. As each student has to deal with various engineering scopes, students’ technical skills are greatly enlarged and they acquire a multidisciplinary knowledge that was not possible in another way. Their soft skills like project management, teamwork, communication ability and personal development, which are valuable requisites for their future employers, are also improved. The participating industries also take advantage of the project: the groups competing against each other act as a multiskilled work force, actually making proposals capable of improving their products, their efficiency, and reducing costs. 相似文献
92.
93.
94.
Sustainability metrics for eco-technologies assessment, Part II. Life cycle analysis 总被引:1,自引:1,他引:0
Juliana Garcia Moretz-Sohn Monteiro Ofélia de Queiroz Fernandes Araújo José Luiz de Medeiros 《Clean Technologies and Environmental Policy》2009,11(4):459-472
This work presents a sustainability analysis of CO2 reuse to produce dimethyl carbonate (DMC) via ethylene oxide (ROUTE A) and via urea methanolysis (ROUTE B). Two different
technologies are considered in ROUTE A: reaction followed by separation and reactive distillation. Life cycle analyses of
the ROUTES are presented employing sustainability analysis performed in HYSYS process simulator, along with WAR Algorithm.
Process economical optimization is performed to maximize the processes profitability. A sustainability function, defined as
a 2D indicator involving both economical and environmental aspects, is calculated for the optimized processes. Additional
sustainability indexes are evaluated: material index, energy index, and ecoefficiency. The results, under both economical
and environmental aspects, show that ROUTE A is the most sustainable. The study also points to the relevance of the frontier
set between the domains cradle-to-gate and gate-to-gate in assessing process sustainability during LCA. 相似文献
95.
Rodríguez PN Zeni SN Suárez CE Ferreira Monteiro AG Martín de Portela ML Friedman SM Lifshitz F 《Archivos latinoamericanos de nutrición》2002,52(4):348-354
The purpose of this study was to investigate the impact of low fat diets in children aged 2 to 5. Eighty two children (40 females and 42 males) attending a school cafeteria (Province of Buenos Aires, Argentina), in a cross sectional study, were evaluated. Body weight (W), height (H) and body composition (BC) by bioimpedance were recorded. The anthropometric raw data were processed as Z-score of the weight-for-age (WEZ) and of the height-for-age (HAZ). Serum insulin-like growth factor 1 (IGF-1) and Zinc/haemoglobin ratio (Zn/Hb) were also measured. Results showed that 73.2% of the children were adequate (A) according WEZ, 13.4% were lean (L) and 13.4% overweight (O). 8.5% presented simultaneously impairment in WEZ and HAZ. Body fat percentage and energy metabolism were higher in O than in L and A (p < 0.05). Serum IGF-1's children--aged 4 to 5 years--with HAZ deficit were low than adequate HAZ ones. No statistical differences in Zn/Hb ratio between A, L and O were found. This cross sectional study suggests metabolic disorders in young children attending school cafeterias. These conclusions will allow to design balanced diets in order to optimize the resources, promote optimal growth and development and prevent adult diseases through dietary practices in childhood. 相似文献
96.
Esteves AC Monteiro OC Barros-Timmons AM Boemare C Soares MJ Monteiro T Trindade T 《Journal of nanoscience and nanotechnology》2002,2(2):177-181
Hybrid materials consisting of SiO2/CdS particles dispersed in poly(styrene-co-maleic anhydride) and poly(styrene-co-maleimide) have been synthesized and characterized. The polymer nanocomposites were synthesised in situ in the presence of previously prepared inorganic fillers (SiO2/CdS). The nanocomposites were synthesized with the use of as-prepared or surface-modified SiO2/CdS fillers. For both types of nanocomposites, the optical properties were evaluated and the observation of size quantization effects in the optical spectra is discussed. In this context, the influence of the inorganic fillers and polymer matrices on the optical properties of the final nanocomposites was investigated. 相似文献
97.
The pressure towards tighter or “seamless” integration of health information systems is a recurring issue with both practical
and analytical relevance. It taps into a discourse in the IS literature in general and organisation and management science
in particular. Unfortunately, the prevailing perception of integration in the IS literature is as a predominantly technical
issue. The CSCW literature, however, is attentive to the socio-technical aspects of integration. Building on this – but supplemented
with recent elaborations in science studies – we aim at exploring the unintended consequences of information systems integration.
A user-led perspective implies emphasising the tailoring to local needs based on in-depth studies of the micro practices.
We argue, however, that the condition for such an approach is radically undermined by politically motivated, regional changes
towards integration with implicated standardisation. Enforcing order in the form of standards across multiple local settings,
seemingly a prerequisite for tight integration, simultaneously produces disorder or additional work in other locations for
other users. Empirically, our study is based on a large, ongoing integration effort at the University hospital of Northern
Norway, specifically studying work practices and perceptions across multiple laboratories. 相似文献
98.
W. F. P. Neves‐Junior C. F. de O. Graeff M. Ferreira M. Mulato M. S. Bernardes J. Coutinho‐Netto 《应用聚合物科学杂志》2006,100(1):702-707
The mechanical properties of rubber tubes produced by dip‐coating technique and the influence of the fabrication process on their structural properties were evaluated. Cyclic tension versus deformation tests were performed to investigate the elastic properties of the samples and to understand the changes in rubber tubes behavior under repetitive stress. The effect of the wall thickness on the elastic response of the tubes was also studied. The mechanical properties of opened tubes were also investigated for transversal and longitudinal directions to evaluate the influence of the fabrication process on the alignment of the polymer chains. This investigation indicated that the fabricated tubes are resistant and extremely elastic. They can be elongated up to 800% of its initial length before rupture, and thicker tubes are a bit more resistant to elongation than the thinner ones. In addition, the fabricated tubes have an anisotropic structure due to the fabrication process. Finally, natural rubber tubes may have a great potential to be used as vascular prosthesis, or in other applications that require a large range of resistance and elasticity. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 702–707, 2006 相似文献
99.
Simone Fujii Ricardo Marcelo Reche Ribeiro Maria Brígida Dos Santos Scholz Elisabete Yurie Sataque Ono Cássio Egidio C Prete Eiko Nakagawa Itano Yoshio Ueno Osamu Kawamura Elisa Yoko Hirooka 《Food Additives & Contaminants》2006,23(9):902-909
The performance of an indirect competitive enzyme-linked immunosorbent assay (ic-ELISA) based on a monoclonal antibody (mAb) for ochratoxin A (OTA) detection was evaluated in a comparative study with high-performance liquid chromatography (HPLC) analysis using 68 freshly harvested coffee samples from the North of Paraná State, Brazil. The anti-OTA mAb showed high specificity and low cross-reactivity with OTA analogues (OTB and OTalpha), but cross-reacted with OTC. This ic-ELISA showed a detection limit of 3.75 ngg-1 sample, when compared to 0.80 ngg-1 by HPLC, with an ic-ELISA/HPLC correlation coefficient of 0.90. As regards OTA analysis of these coffee samples, natural contamination was detected in 10 samples (14.7%) by both methods, where the ic-ELISA values (range 3.9-7.3 ngg-1) were 1.1 to 1.6-fold higher than HPLC data (2.7-4.7 ngg-1). Five samples (7.4%) were OTA positive (range 0.84-1.30 ngg-1) only by HPLC assay, probably due to the higher detection limit reached by ic-ELISA. OTA was undetectable in 53 samples (77.9%) by both methods, while all positive samples (range 0.84-7.30 ngg-1) showed OTA levels lower than 8 ngg-1 (maximum limit recommended by the European Union). The matrix interference of green coffee was minimized by dilution of sample extracts before carrying out the ELISA assay. This mAb-based ic-ELISA can be effectively applied for OTA screening in coffee, because it is simple, sensitive and sample preparation is easy. 相似文献
100.
Elisa Barney Smith David Monn Harsha Veeramachaneni Koichi Kise Alessio Malizia Leon Todoran Adnan El-Nasan Rolf Ingold 《International Journal on Document Analysis and Recognition》2003,6(3):200-206
This document is a collection of four working group reports in the areas of digital libraries, document image retrieval, layout analysis, and Web document analysis. These reports were the outcome of discussions by participants at the Fifth IAPR International Workshop on Document Analysis Systems held in Princeton, NJ on 19-21 August 2002.Published online: 16 March 2004 相似文献