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| 1 | Global Optimization of Nonlinear Blend-Scheduling Problems显示文摘The scheduling of gasoline-blending operations is an important problem in the oil refining industry. Thisproblem not only exhibits the combinatorial nature that is intrinsic to scheduling problems, but alsonon-convex nonlinear behavior, due to the blending of various materials with different quality properties.In this work, a global optimization algorithm is proposed to solve a previously published continuous-timemixed-integer nonlinear scheduling model for gasoline blending. The model includes blend recipe optimi-zation, the distribution problem, and several important operational features and constraints. The algorithmemploys piecewise McCormick relaxation (PMCR) and normalized multiparametric disaggregation tech-nique (NMDT) to compute estimates of the global optimum. These techniques partition the domain of oneof the variables in a bilinear term and generate convex relaxations for each partition. By increasing the num-ber of partitions and reducing the domain of the variables, the algorithm is able to refine the estimates ofthe global solution. The algorithm is compared to two commercial global solvers and two heuristic methodsby solving four examples from the literature. Results show that the proposed global optimization algorithmperforms on par with commercial solvers but is not as fast as heuristic approaches. | Pedro A.Castillo Castillo Pedro M.Castro Vladimir Mahalec | 2017 | Engineering2017，3，2： | 4 |
| 2 | Impact of crude distillation unit model accuracy on refinery production planning显示文摘In this work, we examine the impact of crude distillation unit(CDU) model errors on the results of refinery-wide optimization for production planning or feedstock selection. We compare the swing cut + bias CDU model with a recently developed hybrid CDU model(Fu et al., 2016). The hybrid CDU model computes material and energy balances, as well as product true boiling point(TBP) curves and bulk properties(e.g., sulfur% and cetane index, and other properties). Product TBP curves are predicted with an average error of 0.5% against rigorous simulation curves. Case studies of optimal operation computed using a planning model that is based on the swing cut + bias CDU model and using a planning model that incorporates the hybrid CDU model are presented. Our results show that significant economic benefits can be obtained using accurate CDU models in refinery production planning. | Gang FU Pedro A.Castillo CASTILLO Vladimir MAHALEC | 2018 | Frontiers of Engineering Management2018，5，2： | 3 |
| 3 | Effect of ethylene concentration on quality parameters of fresh tomatoes stored using a carbon-heat hybrid ethylene scrubber显示文摘 | Domingo Martínez-Romero Fabián Guillén Salvador Castillo Pedro Javier Zapata Daniel Valero María Serrano | 2008 | Postharvest Biology and Technology2008，，2： | 1 |
| 4 | Clinical and manometric results of endorectal advancement flaps for complex anal fistula显示文摘 | Natalia Uribe Monica Millán Miguel Minguez Cristina Ballester Francisco Asencio Vicente Sanchiz Pedro Esclapez Juan Ruiz Castillo | 2007 | International Journal of Colorectal Disease2007，，3： | 1 |
| 5 | Analysing the risk of LNG carrier operations显示文摘 | Erik Vanem Pedro Antao Ivan Ostvik Francisco Del Castillo de Comas | | 0，，： | 1 |
| 6 | Biological phosphorus removal using a biofilm membrane reactor: operation at high organic loading rates显示文摘 | Pedro A Castillo | 1999 | Wat Sci Tech1999，40，45： | 1 |
| 7 | Biologicsl phosphorus removsl using a biofdm membrane reactor:operation at high organic loading rates 显示文摘 | Pedro A Castillo | 1999 | Wat Sci Tech1999，40，45： | 1 |
| 8 | The addition of essential oils to MAP as a tool to maintain the overall quality of fruits显示文摘 | María Serrano Domingo Martínez-Romero Fabián Guillén Juan Miguel Valverde Pedro Javier Zapata Salvador Castillo Daniel Valero | 2008 | Trends in Food Science & Technology2008，，9： | 1 |
| 9 | Real-time stabilization and tracking of a four-rotor min rotorcraft 显示文摘 | Pedro Castillo Alejandro Dzul | 2004 | IEEE Transactions on Con- trol Systems Technology2004，12，51： | 1 |
| 10 | Thickness Measurement in Composite Materials Using Lamb Waves Viscoelastic Effects显示文摘 | Eduardo Moreno Pedro Acevedo Martha Castillo | 2000 | Ultrasonics2000，37，： | 1 |
| 11 | Leaching of azinc concentrate in H2SO4 solutions containing H2O2 and comple-xing agents显示文摘 | Teresa Pecina Telhma Franco Pedro Castillo | | Minerals Engineering0，21，： | 1 |
| 12 | Mini Rotorcraft Flight Formation Control Using Bounded Inputs显示文摘 | Jose Alfredo Guerrero Pedro Castillo Sergio Salazar Rogelio Lozano | 2012 | Journal of Intelligent & Robotic Systems2012，，1： | 1 |
| 13 | Real-time stabilization and tracking of a four-rotor mini rotorcraft 显示文摘 | Castillo Pedro Dzul Alejandro Lozano Rogelio | 2004 | Control Systems Technology2004，12，4： | 1 |
| 14 | Development of a Module for Measuring Electrical Variables in Power Transformers Based in IoT,to Manage and Monitoring by Telemetry Mechanism显示文摘This work shows the development of a module that performs measurements of electrical variables in a low voltage power transformer.These variables are sent by means of the IEEE802.11 standard,connecting to a database stored in the cloud;associating with the meter IoT concepts,this to allow a client to perform an analysis,monitoring and management of their electrical network.For the construction of this module,non-invasive current sensors connected to a three-phase meter are used and a communication card is used that allows data to be extracted from the meter and sent to the cloud database.This module,to convert a conventional electrical power transformer into a smart electrical power transformer,making it a Smart Object and thus extract information from it telemetrically in real time. | Jesus Hamilton Ortiz Javier Ferney Castillo García Osamah Ibrahim Khalaf Fernando Velez Varela Pedro Jefferson Barragan Baron Jhon Hadder Guzmán Atehortúa | 2021 | Journal on Internet of Things2021，3，2： | 0 |
| 15 | Gender differences related to the presence of atrial fibrillation in older hypertensive patients显示文摘AIM: To determine whether there are gender differences in the epidemiological profile of atrial fibrillation (AF) and to characterise the clinical, biochemical, and therapeutic factors associated with AF. METHODS: Each investigator (primary care physicians or physicians based in hospital units for hypertension treatment) recruited the first 3 patients with an age of ≥ 65 years and a clinical diagnosis of hypertension (ambulatory blood pressure monitoring and an electrocardiogram, were performed) on the first working day of the week for 5 wk and identified those individu-als with atrial fibrillation. A binary logistic regression was performed, including all of the variables that were significant in the univariate analysis, to establish the variables that were associated with the presence of arrhythmia. RESULTS: A total of 1028 patients were included in the study, with a mean age of 72.8 ± 5.8 years. Of these patients, 47.3% were male, 9% were smokers, 27.6% were diabetics, 48.3% had dyslipidaemia, 10.9% had angina, and 6.5% had experienced a myocardial infarction. Regarding gender differences, the men exhibited a larger waist circumference, a lower body mass index, less obesity, and a more extensive history of diabetes, smoking, ischaemic heart disease, kidney failure, peripheral arterial disease and carotid disease than the women. There were no differences, however, in the prevalence of AF between the men and the women (11.5% vs 9.2%, respectively; P = no significant). Regarding treatment, the women received antiplatelet agents and diuretics less frequently, but there were no other differences in the use of antihypertensive and antithrombotic therapies. In the multivariate analysis, AF in the total study population was associated with age, alcohol consumption, the presence of heart disease, and decreased glomerular filtration. In the women, AF was associated with all of the factors included in the overall analysis, as well as the presence of left ventricle hypertrophy. In contrast, in the men, the only risk factors associated with AF were age, the presence of heart disease and alcohol consumption. CONCLUSION: In patients with hypertension over 65 years of age, there are relevant gender differences in the factors associated with AF. | Lorenzo Fácila Vicente Pallarés Pedro Morillas Alberto Cordero Carlos Sánchis Jose L Gorriz Jesus Castillo Vicente Gil Josep Redon | 2013 | World Journal of Cardiology2013，5，5： | 0 |
| 16 | Optimization of the Production of Biogas in Anaerobic Digestion by the Addition of Hydrolytic Microorganisms显示文摘It is well known that fossil fuels are one of the major pollutants that contribute to climate change and there is a need to develop alternatives to their uses.One option is the use of a renewable fuel such as biogas obtained from the breaking down of organic matter in the anaerobic digestion process.When biogas is cleaned up to a certain quality,it can substitute the use of natural gas.However,this slow process requires optimization to increase the amount of gas.There are chemical,physical and biological treatments for organic matter to increase the amount and quality of biogas.In the former research,a biological treatment was tested by adding a selection of microorganisms that showed hydrolytic activity to an anaerobic digester for its optimization.First,a selection of microorganisms with the ability to grow in fresh sewage sludge as only nutrient was selected.Then,the lipolytic,cellulolytic and PA(Proteolytic Activity)of microorganisms was tested using selective growth media.Finally,10 samples with the greatest hydrolytic activity were used to evaluate their effects in the increasing of biogas production in the anaerobic process.The results showed that 83%of the microorganisms with the ability to grow in sewage sludge were proteolytic,while the percentage of lipolytic and cellulolytic microorganisms was smaller.Furthermore,it was found that proteolytic microorganisms are the ones that increase biogas yield in a maximum of 80%with a COD(Chemical Oxygen Demand)reduction of 58%. | María Montes Melissa Cervantes Alejandra Vásquez Víctor Aguilar Pedro García Isabel Del Castillo | 2022 | Journal of Environmental Science and Engineering(A)2022，11，1： | 0 |
| 17 | Nodal involvement and p16-staining in upper alveolar ridge and hard palate cancer显示文摘Aim:Upper alveolar ridge and hard palate squamous cancer is an infrequent malignancy.We evaluated factors associated with neck involvement and with p16-staining.Methods:Head and neck squamous-cell carcinoma(SCC)patients who went to Head and Neck Department between 1997 and 2011 were screened,and 73 resected upper alveolar ridge and 5 hard palate SCC were selected.Tumors with available tissue were stained with p16 immunohistochemistry.Results:Median age was 64.4 years,55.1%were female,and 73.1%were in clinical stage IV.Neck dissections were performed in 24 and pathologically confirmed node metastases were found in 19(24.3%).Cervical recurrence was found in 18 patients(23.1%)and was associated with histological grade(P=0.037).Three(7.3%)of 41 lesions were positive for p16 and tended to be younger(P=0.067).Lymphovascular invasion was associated with shorter disease-free survival(DFS)(P=0.026)and overall survival(OS)(P=0.021).Larger cT(P=0.019),perineural invasion(P=0.039)and neck dissection(P=0.010)were associated with shorter OS.Neck node involvement tended to have shorter DFS(31%vs.48.7%,P=0.278)and OS(25.1%vs.48.5%,P=0.340),and neck recurrence tended to have shorter OS(9.3%vs.52.3%,P=0.064).Conclusion:Neck involvement and recurrence are frequent in this location.P16-positive cases were present in 7.3%and tended to be associated with younger age. | Edgar Salas Pedro Sanchez Juan Postigo Carlos A.Castaneda Miluska Castillo Valeria Villegas Luis Cano Sandro Casavilca Luis A.Bernabe Carolina Belmar Maria R.Villa-Robles Raul Mantilla Henry Guerra | 2018 | Journal of Cancer Metastasis and Treatment2018，4，1： | 0 |
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