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Osvaldo PENISI,José BOCCA,Horacio AGUILAR,Pedro BOCCA
Frontiers of Mechanical Engineering 2015, Volume 10, Issue 3, Pages 221-232 doi: 10.1007/s11465-015-0347-9
In the mechanized harvest of vines, grape berries are detached through the vibration to the structure supporting the clusters. According to the kind of guide selected, the clusters require one or two vibration directions in the structure. For guiding in parral structures, vibration is necessary in two directions or planes: One perpendicular to the other. The guide branches producing the clusters develop in these planes, and the guiding is called H-guiding. Mechanism theory indicates that a mechanism has as many degrees of freedom as its actuators, and an actuator is needed to achieve a certain vibration. Having the smallest number of possible actuators is beneficial in reducing moving parts and achieving more compact and easily controllable mecha-nisms. In this case, a single degree-of-freedom mechanism is proposed. It is capable of generating vibrations on two planes: One perpendicular to the other. This mechanism is the sum of two link mechanisms on perpendicular planes with a common outlet located at the output rod of the mechanism where the actuator is found. As the distance between the soil and the elements containing the clusters is not constant, a system has been designed to measure the accelerations at the bars and the rocker to validate the acceleration values that detach the grape berries in a prototype in a lab experiment, to ensure that the acceleration needed for pulling the grape berries are produced at any contact point of the bar.
Keywords: harvest mechanisms one DOF vibration
Availability of wind energy resource potential for power generation at Jos, Nigeria
O. O. Ajayi, R. O. Fagbenle, J. Katende, J. O. Okeniyi
Frontiers in Energy 2011, Volume 5, Issue 4, Pages 376-385 doi: 10.1007/s11708-011-0167-5
Keywords: green electricity renewable resources Weibull statistics Jos Nigeria
Agneev Mukherjee, Guillermo Portillo-Perez, Marie-Josée Dumont
Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 3, Pages 531-542 doi: 10.1007/s11705-019-1814-3
Keywords: 5-hydroxymethylfurfural hardwood softwood ferric sulphate biorefinery
DÍAZ,José L. SANZ
Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 3, Pages 513-521 doi: 10.1007/s11783-015-0777-y
Keywords: dark fermentation biohydrogen wastewaters vacuum
Analysis of foundation sliding of an arch dam considering the hydromechanical behavior
Maria Luísa Braga FARINHA, José Vieira de LEMOS, Emanuel MARANHA DAS NEVES
Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 1, Pages 35-43 doi: 10.1007/s11709-012-0142-1
Keywords: concrete dams rock foundations hydromechanical behavior failure analysis
Stochastic Earned Duration Analysis for Project Schedule Management Review
Fernando Acebes,David Poza,José Manuel González-Varona,Adolfo López-Paredes
Engineering 2022, Volume 9, Issue 2, Pages 148-162 doi: 10.1016/j.eng.2021.07.019
Earned duration management (EDM) is a methodology for project schedule management (PSM) that can be considered an alternative to earned value management (EVM). EDM provides an estimation of deviations in schedule and a final project duration estimation. There is a key difference between EDM and EVM: In EDM, the value of activities is expressed as work periods; whereas in EVM, value is expressed in terms of cost. In this paper, we present how EDM can be applied to monitor and control stochastic projects. To explain the methodology, we use a real case study with a project that presents a high level of uncertainty and activities with random durations. We analyze the usability of this approach according to the activities network topology and compare the EVM and earned schedule methodology (ESM) for PSM.
Keywords: Earned duration management Earned value management Stochastic project control Duration forecasting Uncertainty
Optimization of pretreatment of Jatropha oil with high free fatty acids for biodiesel production
Supriyono SUWITO, Giuliano DRAGONE, Hary SULISTYO, Bardi MURACHMAN, Suryo PURWONO, José TEIXEIRA
Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 2, Pages 210-215 doi: 10.1007/s11705-012-1282-5
Keywords: biodiesel biofuel esterification free fatty acids jatropha curcas oil
Modelling and diagnostics of multiple cathodes plasma torch system for plasma spraying
Nazlim BAGCIVAN, Lidong ZHAO, Ivica PETKOVIC, Jochen SCHEIN, Karsten HARTZ-BEHREND, Stefan KIRNER, José-Luis
Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3, Pages 324-331 doi: 10.1007/s11465-011-0125-2
Usage of a multiple-arcs system has significantly improved process stability and coating properties in air plasma spraying. However, there are still demands on understanding and controlling the physical process to determine process conditions for reproducible coating quality and homogeneity of coating microstructure. The main goal of this work is the application of numerical simulation for the prediction of the temperature profiles at the torch outlet for real process conditions. Behaviour of the gas flow and electric arcs were described in a three-dimensional numerical model. The calculated results showed the characteristic triangular temperature distribution at the torch nozzle outlet caused by three electric arcs. These results were compared with experimentally determined temperature distributions, which were obtained with specially developed computed tomography equipment for reconstructing the emissivity and temperature distribution of the plasma jet close to the torch exit. The calculated results related to temperature values and contours were verified for the most process parameters with experimental ones.
Keywords: plasma spraying electric arc three-cathode plasma torch numerical simulation computed tomography
A multi-integrated approach on toxicity effects of engineered TiO
DINIZ,Joana LOURENÇO,Isabel PERES,Luisa CASTRO,José Brito CORREIA,Joana PEREIRA,Isabel FERREIRA,António
Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 5, Pages 793-803 doi: 10.1007/s11783-015-0775-0
Keywords: ecotoxicity enzymatic analysis histology transmission electron microscopy (TEM) TiO2-nanoparticles
Non-thermal plasma for exhaust gases treatment
,José HUERTAS C.,Hilda FRÍAS P.
Frontiers of Mechanical Engineering 2015, Volume 10, Issue 3, Pages 301-305 doi: 10.1007/s11465-015-0344-z
This article describes a study on a non-thermal plasma device to treat exhaust gases in an internal combustion engine. Several tests using a plasma device to treat exhaust gases are conducted on a Honda GX200-196 cm3 engine at different rotational speeds. A plasma reactor could be efficient in degrading nitrogen oxides and particulate matter. Monoxide and carbon dioxide treatment is minimal. However, achieving 1%–3% degradation may be interesting to reduce the emission of greenhouse gases.
Keywords: plasma treatment NOx CO CO2 particulate matter vehicle
Paulo César DE FACCIO CARVALHO, Jean Víctor SAVIAN, Tomas DELLA CHIESA, William DE SOUZA FILHO, José
Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 1, Pages 97-110 doi: 10.15302/J-FASE-2020380
Keywords: grazing integrated crop-livestock systems mixed crops-livestock Pampa
Miguel OLIVER,Francisco MONTERO,José Pascual MOLINA,Pascual GONZÁLEZ,Antonio FERNÁNDEZ-CABALLERO
Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 4, Pages 348-364 doi: 10.1631/FITEE.1500347
Keywords: Kinect sensor Rehabilitation system Capture precision Multi-camera system
Ignacio Casal, Gemma Domínguez, Ana Guzman-Aranguez, Alberto Peláez-García, José Manuel Pingarrón, Susana
Engineering 2021, Volume 7, Issue 10, Pages 1393-1412 doi: 10.1016/j.eng.2021.04.026
Colorectal cancer (CRC) is the second leading cause of cancer related death worldwide. The 5-year survival rate of CRC patients depends on the stage at diagnosis, being higher than 80% when CRC is diagnosed in the early stages but lower than 10% when CRC is diagnosed in advanced stages. Autoantibodies against specific CRC autoantigens (tumor-associated antigens (TAAs)) in the sera of patients have been widely demonstrated to aid in early diagnosis. Thus, we herein aim to identify autoantigens target of autoantibodies specific to CRC that possess a significant ability to discriminate between CRC patients and healthy individuals by means of liquid biopsy. To that end, we examined the protein content of the exosomes released by five CRC cell lines and tissue samples from CRC patients by means of immunoprecipitation coupled with mass spectrometry analysis. A total of 103 proteins were identified as potential autoantigens specific to CRC. After bioinformatics and meta-analysis, we selected 15 proteins that are more likely to be actual CRC autoantigens in order to evaluate their role in CRC prognosis by Western blot (WB) and immunohistochemistry (IHC). We found dysregulation at the protein level for 11 of these proteins in both tissue and plasma exosome samples from patients, along with an association of nine of these proteins with CRC prognosis. After validation, all but one showed a statistically significant high diagnostic ability to distinguish CRC patients and individuals with premalignant lesions from healthy individuals, either by luminescence Halotag-based beads, or by a multiplexed biosensing platform involving the use of magnetic microcarriers as solid support modified with covalently immobilized Halotag fusion proteins constructed for CRC detection. Taken together, our results highlight the usefulness of the approach defined here to identify the TAAs specific to chronic diseases; they also demonstrate that the measurement of autoantibody levels in plasma against the TAAs identified here could be integrated into a point-of-care (POC) device for CRC detection with high diagnostic ability.
Keywords: Autoantibodies Diagnosis Colorectal cancer Exosomes Tumor microenviroment Humoral immune response Point of care Biosensors
Title Author Date Type Operation
One DOF mechanism for the mechanical harvest of vines in an arbor structure and the validation of the acceleration of grape berry harvesting
Osvaldo PENISI,José BOCCA,Horacio AGUILAR,Pedro BOCCA
Journal Article
Availability of wind energy resource potential for power generation at Jos, Nigeria
O. O. Ajayi, R. O. Fagbenle, J. Katende, J. O. Okeniyi
Journal Article
Synthesis of hydroxymethylfurfural and furfural from hardwood and softwood pulp using ferric sulphate as catalyst
Agneev Mukherjee, Guillermo Portillo-Perez, Marie-Josée Dumont
Journal Article
Vacuum promotes metabolic shifts and increases biogenic hydrogen production in dark fermentation systems
DÍAZ,José L. SANZ
Journal Article
Analysis of foundation sliding of an arch dam considering the hydromechanical behavior
Maria Luísa Braga FARINHA, José Vieira de LEMOS, Emanuel MARANHA DAS NEVES
Journal Article
Stochastic Earned Duration Analysis for Project Schedule Management
Fernando Acebes,David Poza,José Manuel González-Varona,Adolfo López-Paredes
Journal Article
Optimization of pretreatment of Jatropha oil with high free fatty acids for biodiesel production
Supriyono SUWITO, Giuliano DRAGONE, Hary SULISTYO, Bardi MURACHMAN, Suryo PURWONO, José TEIXEIRA
Journal Article
Modelling and diagnostics of multiple cathodes plasma torch system for plasma spraying
Nazlim BAGCIVAN, Lidong ZHAO, Ivica PETKOVIC, Jochen SCHEIN, Karsten HARTZ-BEHREND, Stefan KIRNER, José-Luis
Journal Article
A multi-integrated approach on toxicity effects of engineered TiO
DINIZ,Joana LOURENÇO,Isabel PERES,Luisa CASTRO,José Brito CORREIA,Joana PEREIRA,Isabel FERREIRA,António
Journal Article
LAND-USE INTENSIFICATION TRENDS IN THE RIO DE LA PLATA REGION OF SOUTH AMERICA: TOWARD SPECIALIZATION OR RECOUPLING CROP AND LIVESTOCK PRODUCTION
Paulo César DE FACCIO CARVALHO, Jean Víctor SAVIAN, Tomas DELLA CHIESA, William DE SOUZA FILHO, José
Journal Article
Multi-camera systems for rehabilitation therapies: a study of the precision of MicrosoftKinect sensors
Miguel OLIVER,Francisco MONTERO,José Pascual MOLINA,Pascual GONZÁLEZ,Antonio FERNÁNDEZ-CABALLERO
Journal Article
Multiplexed Biosensing Diagnostic Platforms Detecting Autoantibodies to Tumor-Associated Antigens from Exosomes Released by CRC Cells and Tissue Samples Showed High Diagnostic Ability for Colorectal Cancer
Ignacio Casal, Gemma Domínguez, Ana Guzman-Aranguez, Alberto Peláez-García, José Manuel Pingarrón, Susana
Journal Article