Electric vehicle charging demand forecasting model based on big data technologies

Arias, M.B.,Bae, S. Applied Science Publishers 2016 APPLIED ENERGY Vol.183 No.-

<P>This paper presents a forecasting model to estimate electric vehicle charging demand based on big data technologies. Most previous studies have not considered real-world traffic distribution data and weather conditions in predicting the electric vehicle charging demand. In this paper, the historical traffic data and weather data of South Korea were used to formulate the forecasting model. The forecasting processes include a cluster analysis to classify traffic patterns, a relational analysis to identify influential factors, and a decision tree to establish classification criteria. The considered variables in this study were the charging starting time determined by the real-world traffic patterns and the initial state-of-charge of a battery. Example case studies for electric vehicle charging demand during weekdays and weekends in summer and winter were presented to show the different charging load profiles of electric vehicles in the residential and commercial sites. The presented forecasting model may allow power system engineers to anticipate electric vehicle charging demand based on historical traffic data and weather data. Therefore, the proposed electric vehicle charging demand model can be the foundation for the research on the impact of charging electric vehicles on the power system. (C) 2016 Elsevier Ltd. All rights reserved.</P>

Effects of Hybrid and Maturity on Maize Stover Ruminal Degradability in Cattle Fed Different Diets

Arias, S.,Di Marco, O.N.,Aello, M.S. Asian Australasian Association of Animal Productio 2003 Animal Bioscience Vol.16 No.11

The effect of maize hybrid (Suco and Dekalb 765, DK 765), maturity stage (milk, $R_3$ and 1/2 milk line, $R_5$) and animal diet (Diet 1: 70% lucerne hay+30% maize silage; Diet 2: 50% maize silage+20% sunflower meal+30% maize grain) on ruminal stover dry matter (DM) degradability was studied. Additionally, morphological and chemical plant composition was evaluated. Fodder samples ground at 2 mm were incubated in three Holstein steers (400 kg body weight) using the in situ technique. Ruminal degradation kinetics was studied and the effective degradability (ED) was estimated for an assumed kp of 5%/h. The in situ data was analyzed in a complete randomized block design with the animals as blocks. Significant interactions between hybrid${\times}$diet and maturity${\times}$diet on kinetic digestion parameters were detected. In Diet 1, hybrids did not differ in degradable fraction, kd or ED, although a minor difference (p<0.05) in the soluble fraction was found (25.5 and 23.2% for Suco and DK 765, respectively). In Diet 2, the DK 765 had greater degradable fraction (p<0.001) but smaller (p<0.01) kd than Suco, without differences in the soluble fraction or in ED. Anticipating the harvest increased ED of stover from 37.5% in $R_5$ to 44.6% in $R_3$ (average values across hybrids and diets) due to the increase (p<0.001) in the soluble fraction ($R_5$: 22.6%, $R_3$: 28.8%). It is concluded that hybrids had similar stover in situ DM degradability and that soluble fraction represent the main proportion of degradable substrates. Advancing the date of harvesting may not improve the in situ DM degradability of whole maize plant silage since the increase in stover quality is counteracted by the depression in the grain-to-stover ratio. The diet of the animal consuming silage might not improve stover utilization either.

Compatible systems of symplectic Galois representations and the inverse Galois problem III. Automorphic construction of compatible systems with suitable local properties

Arias-de-Reyna, S.,Dieulefait, L. V.,Shin, S. W.,Wiese, G. Springer Science + Business Media 2015 Mathematische Annalen Vol.361 No.3

Microstructure and Crystallographic Texture of Pure Titanium Parts Generated by Laser Additive Manufacturing

Felipe Arias-González,Jesús del Val,Rafael Comesaña,Joaquín Penide,Fernando Lusquiños,Félix Quintero,Antonio Riveiro,Mohamed Boutinguiza,Francisco Javier Gil,Juan Pou 대한금속·재료학회 2018 METALS AND MATERIALS International Vol.24 No.1

In this paper, the microstructure and crystallographic texture of pure Ti thin walls generated by Additive Manufacturingbased on Laser Cladding (AMLC) are analyzed in depth. From the results obtained, it is possible to betterunderstand the AMLC process of pure titanium. The microstructure observed in the samples consists of large elongatedcolumnar prior β grains which have grown epitaxially from the substrate to the top, in parallel to the buildingdirection. Within the prior β grains, α-Ti lamellae and lamellar colonies are the result of cooling from above the β-transus temperature. This transformation follows the Burgers relationship and the result is a basket-weave microstructurewith a strong crystallographic texture. Finally, a thermal treatment is proposed to transform the microstructureof the as-deposited samples into an equiaxed microstructure of α-Ti grains.

Development of a Magnetic-field Stimulation System for Cell Cultures in situ

G. Dominguez,S. Arias,Jose L. Reyes,Pablo Rogeli 한국자기학회 2017 Journal of Magnetics Vol.22 No.2

The effects of exposure to an extremely low-frequency magnetic field (25 ㎐ 20G) on animal cells have been studied. In some reports, stimulation was performed for fixed frequency and variations in magnitude; however, animal-cell experiments have established that both parameters play an important role. The present work undertook the modeling, simulation, and development of a uniform-magnetic-field generation system with variable frequency and stimulation intensity (0-60 ㎐, 1-25G) for experimentation with cell cultures in situ. The results showed a coefficient of variation less than 1% of the magnetic-field dispersion at the working volume, which is consistent with the corresponding simulation results demonstrating a uniform magnetic field. On the other hand, long-term tests during the characterization process indicated that increments of only 0.4℃ in the working volume temperature will not be an interfering factor when experiments are carried out in in situ cell cultures.

Preparation of a Porous Scaffold Based on Polypropylene Grafted with Monomethylitaconate as Potential Bone Graft

A. Neira-Carrillo,M. S. Fernández,J. L. Arias,S. Navarrete G,M. Paz Díaz,M. Yazdani-Pedram 한국고분자학회 2011 Macromolecular Research Vol.19 No.11

Based on polypropylene (PP) grafted with different percentages of maleic anhydride (PP-g-MA) or monomethylitaconate (PP-g-MMI) a new porous scaffold was prepared with porosities in the range of 50-200 μm. The swelling capacity was analyzed, and morphological, mechanical, and elemental analyses of these scaffolds were carried out. In vitro swelling in the simulated body fluid (SBF), chitosan (CHI) of low (70 kDa) and high (350 kDa)molecular weight, and chitosan-hydroxyapatite solutions were assayed at 37 ℃ from 24 h to 4 weeks. The swelling degree (SD) of these scaffolds was in the range of 25%-125%. The highest SD value was found in the low-molecular weight (LMW) chitosan solution. The PP-g-MMI and PP-g-MA with 0.7% and 1% of grafting, respectively, showed the highest SD values in the CHI solution. The in vitro treatment of the scaffold was performed by immersion in LMW chitosan and/or the double ionic diffusion (DID) method. The pore structure of the scaffolds was unaltered after these treatments, as revealed by scanning electron microscopy (SEM). Mechanical properties, that is, fracture resistance and deformation of the porous scaffolds depended on the percentage of grafting. Scaffolds with a smaller pore size showed higher mechanical properties. Energy Dispersive Spectroscopy (EDS) measurements of PP-g-MMI with 0.7% of grafting after in vitro treatment revealed the formation of hydroxyapatite (HA) crystals with different morphologies on the porous scaffold. It was concluded that the porous scaffold based on PP-g-MMI could be used as a potential prototype bone graft.

Pain in Patients with Dystrophic Epidermolysis Bullosa: Association with Anxiety and Depression

Giulio Fortuna,Massimo Aria,Rodrigo Cepeda-Valdes,Maria Guadalupe Moreno Trevino,Julio Cesar Salas-Alanís 대한신경정신의학회 2017 PSYCHIATRY INVESTIGATION Vol.14 No.6

Objective: We investigate the presence and the quality of pain in patients with dystrophic epidermolysis bullosa (DEB), and its correlation with the level of anxiety and depression. Methods: We collected data from 27 DEB patients and 26 healthy individuals. DEB patients and controls completed 1 scale for the quality of pain, and 1 scale for anxiety and depression. Pain was assessed with the short form of the McGill Pain Questionnaire, whereas anxiety and depression were assessed with the Hamilton rating scale for anxiety and depression. Results: DEB patients and healthy control individuals were homogeneous for age and gender (p>0.05). A statistically significant difference in the two groups was seen for sensory pain rating scale (p<0.001), affective pain rating scale (p=0.029), total pain rating scale (p<0.001), visual analogue scale (p=0.012) and present pain intensity (p=0.001), but not for anxiety (p=0.169) and depression (p=0.530). The characteristics of pain that showed a significant difference between DEB patients and healthy controls were shooting, splitting, tender and throbbing (p<0.05). In DEB patients pain was not correlated with anxiety or depression (p>0.05), whereas a slight correlation between pain and anxiety was found in healthy controls (p<0.05). No difference was found between quality of pain and anxiety-depression in DEB patients (p>0.05), but was between the DEB dominant and the recessive form of DEB (p=0.025). Conclusion: The perception of pain in DEB patients appears greater than in healthy individuals, with splitting and tender characteristics being the most significant ones, but was not associated with anxious and/or depressive symptoms.

Printed Polymer and a-Si TFT Backplanes for Flexible Displays

Street, R.A.,Wong, W.S.,Ready, S.E.,Chabinyc, M.L.,Arias, A.C.,Daniel, J.H.,Apte, R.B.,Salleo, A.,Lujan, R.,Ong, Beng,Wu, Yiliang The Korean Infomation Display Society 2005 Journal of information display Vol.6 No.3

The need for low cost, flexible, thin film transistor (TFT) display backplanes has focused attention on new processing techniques and materials. We report the development of TFT backplane technology based entirely on jet-printing, using a combination of additive and subtractive processing, to print active materials or etch masks. The technique eliminates the use of photolithography and has the potential to reduce the array manufacturing cost. The printing technique is demonstrated with both amorphous silicon and polymer semiconductor TFT arrays, and we show results of small prototype displays.

Sensitivity of Seeds to Chemical Mutagens, Detection of DNA Polymorphisms and Agro-Metrical Traits in M1 Generation of Coffee (Coffea arabica L.)

César Vargas-Segura,Emmanuel López-Gamboa,Emanuel Araya-Valverde,Marta Valdez-Melara,Andrés Gatica-Arias 한국작물학회 2019 Journal of crop science and biotechnology Vol.22 No.5

Coffee (Coffea arabica L.) is threatened by biotic and abiotic stresses. Nevertheless, the breeding of Arabica coffee is restricted due to its low genetic diversity. Crop improvement via mutagenesis represents an alternative for increasing genetic variability and facilitating breeding. In this sense, coffee seeds cv. Catuaí were treated for 8 h with a solution of sodium azide (NaN3) (0, 50, 75, 100, and 125 mM) and ethyl methane sulfonate (EMS) (0, 80, 160, 240, 320, and 400 mM). The genetic variability induced in coffee plants after mutagenic treatment with sodium azide was determined by RAPD and AFLP analyses. As the concentration of applied NaN3 and EMS increased, the germination, seedling height, and root length decreased. The LD50 values for NaN3 and EMS were between 50-75 mM and 160-240 mM, respectively. For the 12 RAPD primers evaluated, a total of 46 fragments were obtained of which 34 were polymorphic bands (74%). The amplification with six AFLP selective primer combinations allowed the identification of 36 polymorphisms (17.8%). The analysis revealed that both NaN3 and EMS induced variability within the DNA regions amplified with AFLP and RAPD markers. Finally, under field conditions, significant differences were noticed with respect to plant height, number of nodes in the orthotropic stem, and number of branches of the M1 mutant (NaN3-treated) plants compared to the non-mutant plants. Optimal conditions for NaN3 and EMS mutagenesis using seeds were determined and the optimized conditions have been used to generate a NaN3 mutant M1 coffee var. Catuaí population.

The Role of CYP2B6*6 Gene Polymorphisms in 3,5,6-Trichloro-2-pyridinol Levels as a Biomarker of Chlorpyrifos Toxicity Among Indonesian Farmers

Jen Fuk Liem,Dwi A. Suryandari,Safarina G. Malik,Muchtaruddin Mansyur,Dewi S. Soemarko,Aria Kekalih,Imam Subekti,Franciscus D. Suyatna,Bertha Pangaribuan 대한예방의학회 2022 예방의학회지 Vol.55 No.3

Objectives: One of the most widely used pesticides today is chlorpyrifos (CPF). Cytochrome P450 (CYP)2B6, the most prominent catalyst in CPF bioactivation, is highly polymorphic. The objective of our study was to evaluate the role of CYP2B6*6, which contains both 516G>T and 785A>G polymorphisms, in CPF toxicity, as represented by the concentration of 3,5,6-trichloro-2-pyridinol (TCPy), among vegetable farmers in Central Java, Indonesia, where CPF has been commonly used. Methods: A cross-sectional study was conducted among 132 vegetable farmers. Individual socio-demographic and occupational characteristics, as determinants of TCPy levels, were obtained using a structured interviewer-administered questionnaire and subsequently used to estimate the cumulative exposure level (CEL). TCPy levels were detected with liquid chromatography-mass spectrometry. CYP2B6*6 gene polymorphisms were analyzed using a TaqMan® SNP Genotyping Assay and Sanger sequencing. Linear regression analysis was performed to analyze the association between TCPy, as a biomarker of CPF exposure, and its determinants. Results: The prevalence of CYP2B6*6 polymorphisms was 31% for *1/*1, 51% for *1/*6, and 18% for *6/*6. TCPy concentrations were higher among participants with CYP2B6*1/*1 than among those with *1/*6 or *6/*6 genotypes. CYP2B6*6 gene polymorphisms, smoking, CEL, body mass index, and spraying time were retained in the final linear regression model as determinants of TCPy. Conclusions: The results suggest that CYP2B6*6 gene polymorphisms may play an important role in influencing susceptibility to CPF exposure. CYP2B6*6 gene polymorphisms together with CEL, smoking habits, body mass index, and spraying time were the determinants of urinary TCPy concentrations, as a biomarker of CPF toxicity.