EMS Power Dispatch of PV System Installed in Smart Buildings with EV Parking Lot and VRB Hybrid Storage in Distribution Systems

Jose Bastidas Betancourt,Khawaja Khalid Mehmood,Muhammad Saeed uz Zaman,Chul-Hwan Kim 한국조명·전기설비학회 2018 조명·전기설비학회논문지 Vol.32 No.4

This paper proposes an Energy Management System (EMS) power dispatch algorithm for a set of various distributed energy resources (DERs) such as distributed generators (DGs) and energy storage systems (ESSs) connected to a 1-MW power grid system. The ESS is composed of a stationary Vanadium Redox Battery (VRB) and Li-ion Electric Vehicle (EV) charging parking lot at a workplace incorporating Vehicle to Grid (V2G) and Grid to Vehicle (G2V) charging capabilities considering no linear modeling of both battery technologies. The simulation study is carried out considering load profile curves of residential and commercial load connected to the system at peak of summer load. Effectiveness and simulation results of the proposed EMS dispatch model were confirmed on various scenarios under the presence of different levels of power mismatch, high intermittence of PV power output and EV penetration.

Reliability of Reinforced Concrete Structures Subjected to Corrosion-Fatigue and Climate Change

Emilio Bastidas-Arteaga 한국콘크리트학회 2018 International Journal of Concrete Structures and M Vol.12 No.1

Durability of reinforced concrete (RC) structures is affected by certain environmental conditions and operational actions which can reduce their lifetime significantly. Among these actions, this paper proposes a stochastic model that accounts for the combined effects of chloride-induced corrosion, climate change and cyclic loading. Separately, corrosion leads to cross-section reduction, climate change produces changes in temperature and humidity and fatigue induces nucleation and propagation of cracks in the rebars. When considered together, pitting corrosion nucleates cracks while environmental factors affect the kinematics of chloride ingress and corrosion propagation. The proposed approach is illustrated with the reliability analysis of a bridge girder subjected to cyclic loading under various environmental conditions. The overall results indicate that climate change effect induces lifetime reductions ranging between 1.4 and 2.3% if fatigue load is neglected. Under cyclic loading, total lifetime reduction increases up to 7%.

Characteristics and Nutritional and Cardiovascular-Health Properties of Seaweeds

Bocanegra, Aranzazu,Bastida, Sara,Benedi, Juana,Rodenas, Sofia,Sanchez-Muniz, Francisco J. The Korean Society of Food Science and Nutrition 2009 Journal of medicinal food Vol.12 No.2

While marine algae have traditionally formed part of the Oriental diet, their major use in Western countries has been in the phytocolloid industry. Only a few coastal communities outside Asia have customarily used seaweeds as components of special dishes. Of late, however, seaweeds have gained importance as foodstuffs in Western countries and most recently as components of functional foods because of their high dietary fiber, mineral, vitamin, and phytochemical content, low energy levels, and high concentrations of certain polyunsaturated fatty acids. The present paper reviews the available data for some of the components of the major edible algae and studies several factors that can affect their physiochemical properties (e.g., hydration, water and oil-holding capacity, fermentability, binding capacity, etc.) and, in turn, their nutritional importance. The effects of marine alga consumption on growth and body weight, mineral availability, lipid metabolism, blood pressure, and antioxidant properties are reviewed, together with preliminary data on the effects of some functional foods containing seaweeds on lipid metabolism and gene expression of enzymes engaged in antioxidant protection. This review concludes with some remarks regarding the danger of the improper use of seaweeds in herbal medications. In addition, as the properties of algae are highly dependent on their individual composition, any generalization regarding these properties may be considered misleading and scientifically inappropriate.

An Efficient Chloride Ingress Model for Long-Term Lifetime Assessment of Reinforced Concrete Structures Under Realistic Climate and Exposure Conditions

Nguyen, Phu Tho,Bastidas-Arteaga, Emilio,Amiri, Ouali,Soueidy, Charbel-Pierre El Korea Concrete Institute 2017 International Journal of Concrete Structures and M Vol.11 No.2

Chloride penetration is among the main causes of corrosion initiation in reinforced concrete (RC) structures producing premature degradations. Weather and exposure conditions directly affect chloride ingress mechanisms and therefore the operational service life and safety of RC structures. Consequently, comprehensive chloride ingress models are useful tools to estimate corrosion initiation risks and minimize maintenance costs for RC structures placed under chloride-contaminated environments. This paper first presents a coupled thermo-hydro-chemical model for predicting chloride penetration into concrete that accounts for realistic weather conditions. This complete numerical model takes into account multiple factors affecting chloride ingress such as diffusion, convection, chloride binding, ionic interaction, and concrete aging. Since the complete model could be computationally expensive for long-term assessment, this study also proposes model simplifications in order to reduce the computational cost. Long-term chloride assessments of complete and reduced models are compared for three locations in France (Brest, Strasbourg and Nice) characterized by different weather and exposure conditions (tidal zone, de-icing salts and salt spray). The comparative study indicates that the reduced model is computationally efficient and accurate for long-term chloride ingress modeling in comparison to the complete one. Given that long-term assessment requires larger climate databases, this research also studies how climate models may affect chloride ingress assessment. The results indicate that the selection of climate models as well as the considered training periods introduce significant errors for mid- and long- term chloride ingress assessment.

Characteristics and Nutritional and Cardiovascular-Health Properties of Seaweeds

Aránzazu Bocanegra,Sara Bastida,Juana Benedí,Sofía Ródenas,Francisco J. Sánchez-Muniz 한국식품영양과학회 2009 Journal of medicinal food Vol.12 No.2

While marine algae have traditionally formed part of the Oriental diet, their major use in Western countries has been in the phytocolloid industry. Only a few coastal communities outside Asia have customarily used seaweeds as components of special dishes. Of late, however, seaweeds have gained importance as foodstuffs in Western countries and most recently as components of functional foods because of their high dietary fiber, mineral, vitamin, and phytochemical content, low energy levels, and high concentrations of certain polyunsaturated fatty acids. The present paper reviews the available data for some of the components of the major edible algae and studies several factors that can affect their physiochemical properties (e.g., hydration, water and oil-holding capacity, fermentability, binding capacity, etc.) and, in turn, their nutritional importance. The effects of marine alga consumption on growth and body weight, mineral availability, lipid metabolism, blood pressure, and antioxidant properties are reviewed, together with preliminary data on the effects of some functional foods containing seaweeds on lipid metabolism and gene expression of enzymes engaged in antioxidant protection. This review concludes with some remarks regarding the danger of the improper use of seaweeds in herbal medications. In addition, as the properties of algae are highly dependent on their individual composition, any generalization regarding these properties may be considered misleading and scientifically inappropriate.

An Efficient Chloride Ingress Model for Long-Term Lifetime Assessment of Reinforced Concrete Structures Under Realistic Climate and Exposure Conditions

Phu Tho Nguyen,Emilio Bastidas-Arteaga,Ouali Amiri,Charbel-Pierre El Soueidy 한국콘크리트학회 2017 International Journal of Concrete Structures and M Vol.11 No.2

Chloride penetration is among the main causes of corrosion initiation in reinforced concrete (RC) structures producing premature degradations.Weather and exposure conditions directly affect chloride ingress mechanisms and therefore the operational service life and safety of RC structures. Consequently, comprehensive chloride ingress models are useful tools to estimate corrosion initiation risks and minimize maintenance costs for RC structures placed under chloride-contaminated environments. This paper first presents a coupled thermo-hydro-chemical model for predicting chloride penetration into concrete that accounts for realistic weather conditions. This complete numerical model takes into account multiple factors affecting chloride ingress such as diffusion, convection, chloride binding, ionic interaction, and concrete aging. Since the complete model could be computationally expensive for long-term assessment, this study also proposes model simplifications in order to reduce the computational cost. Long-term chloride assessments of complete and reduced models are compared for three locations in France (Brest, Strasbourg and Nice) characterized by different weather and exposure conditions (tidal zone, de-icing salts and salt spray). The comparative study indicates that the reduced model is computationally efficient and accurate for long-term chloride ingress modeling in comparison to the complete one. Given that long-term assessment requires larger climate databases, this research also studies how climate models may affect chloride ingress assessment. The results indicate that the selection of climate models as well as the considered training periods introduce significant errors for mid- and long- term chloride ingress assessment.

The indigenous bioculture of the Pungalá parish of Ecuador an approach to their culinary and medicinal heritage

Zurita-Gallegos Ronald Mauricio,Bastidas-Arauz María Belén,Saeteros-Hernandez Angélica María,Chávez Renato Hernán Herrera,Cardenas-Moyano María Yadira 한국식품연구원 2024 Journal of Ethnic Foods Vol.11 No.-

The food and culinary heritage with medicinal uses are a fascinating field that combines history, culture, and health through food. Over the centuries, various cultures have developed knowledge and practices related to the use of specific ingredients and culinary preparations with medicinal properties. In the Pungalá parish in Ecuador, these generational knowledge and traditions form a valuable biocultural heritage that helps us understand the close relationship between food and traditional medicine. Through qualitative and documentary research, interviews and community workshops are conducted to gather information using different techniques. Among the findings regarding the food and culinary heritage of Pungalá are extinct culinary traditions, as well as important culinary techniques and processes that play a role in nutrition and medicine, valuing traditional and ancestral knowledge as part of their culture. The inventory includes 22 plants used in Andean medicine and 38 preparations, including beverages, porridges, stews, soups, and wrapped dishes that become an integral part of everyday routines, dietary habits, and festive traditions. It is concluded that this knowledge constitutes a valuable food and culinary heritage, and its biocultural is based on ancestral knowledge of the healing properties of local plants and foods, contributing to the health and identity of the community. Measures should be taken to preserve and promote this heritage in the face of current challenges.

Changes in the oral environment during four stages of orthodontic treatment

Lara-Carrillo Edith,Norma Margarita Montiel-Bastida,Sa'nchez-Pe'rez Leonor,Alani's-Tavira Jorge 대한치과교정학회 2010 대한치과교정학회지 Vol.40 No.2

Objective: To identify clinical, salivary, and bacterial changes during orthodontic treatment with follow-up to 24 months. Methods: In 30 patients, clinical (decayed, missing, and filled surfaces [DMFS], O'Leary's plaque index, and plaque pH), salivary (unstimulated and stimulated saliva, buffer capacity, pH, and occult blood), and bacterial (Streptococcus mutans and Lactobacillus) markers were evaluated. A questionnaire was employed to evaluate their hygienic-dietary habits. Data were analyzed by ANOVA, logistic regression and Spearman?s correlation. Results: DMFS increased significantly, whereas the plaque index diminished, plaque pH was more acidic (p = 0.23), and unstimulated salivary flow showed significant differences during the treatment (p = 0.013). Stimulated saliva flow increased in females after the placement of appliances; buffer capacity was diminished in males during the therapy; salivary pH remained at basal values. Bacterial levels and occult blood increased to high-risk levels and were not statistically significant different between genders (p > 0.05). Two major relationships were confirmed: initial plaque with use of dental aids (r = 0.429; p = 0.018) and final DMFS with unstimulated salivary flow (r = -0.372; p = 0.043). Conclusions: The increase in retentive surfaces increased the bacterial levels, plaque pH became acidified, and gingival damage was greater. Buffer capacity was altered but maintained a healthy salivary pH during the treatment. 교정치료 중 구강 내 환경 변화를 파악하기 위하여 교정치료 시작 후 24개월까지의 임상적 구강위생지수 및 타액, 구강 내 미생물의 변화양상을 평가하였다. 30명의 환자를 대상으로 하여, 임상적 구강위생지수(DMFS [decayed, missing and filled surfaces], O'Leary's plaque index, plaque pH), 타액의 변화(비자극/자극시의 타액량, 완충능(buffer capacity), pH, 잠혈(occult blood)류량, 구강 내 미생물(Streptococcus mutans, Lactobacillus) 변화를 파악하였다. 추가적으로 설문지를 이용하여 구강위생관리 및 식습관을 평가하였다. 분산분석, 회귀분석 및 Spearman의 상관분석을 통해 데이터를 분석하였다. 교정치료 도중 DMFS 값은 유의성있게 증가한 반면, plaque index는 감소하였고, plaque pH는 산성을 나타내었다 (p = 0.23). 비자극 시 타액량은 치료 중 유의성있게 변화하였으며 (p = 0.13), 자극 시의 타액량은 여성에서 장치 부착 이후 증가하는 양상을 보였다. Buffer capacity는 남성에서 치료 도중 감소되었으며, 타액의 pH는 유지되었다. 구강 내 미생물 및 잠혈류량은 고위험 수준까지 증가하였으며 성별의 차이는 나타나지 않았다 (p > 0.05). 치료 전 plaque와 구강위생용품의 사용 (r = 0.429; p = 0.018), 최종 DMFS와 비자극 시의 타액량 (r = -0.372; p = 0.043) 간에 뚜렷한 상관관계가 확인되었다. 교정장치의 부착으로 인해 구강 내 미생물은 증가하고, plaque pH는 산성화되어 치주조직의 손상이 일어나게 되었다. 또한 Buffer capacity는 변하지만, 치료 기간중의 타액의 pH는 유지되었다.

Fluorescence Guided Surgery with 5-Aminolevulinic Acid for Resection of Spinal Cord Ependymomas

Rafael García Moreno,Luis Miguel Bernal García,Hyaissa Ippolito Bastidas,Carlos Andrés Mondragón Tirado,Aurora Moreno Flores,Juan Pablo Sosa Cabezas,José Manuel Cabezudo Artero 대한척추외과학회 2019 Asian Spine Journal Vol.13 No.1

Study Design: A retrospective study. Purpose: We report our experience with 5-aminolevulinic acid (5-ALA)–assisted resection of spinal cord ependymomas in adults. Overview of Literature: Ependymoma is the most frequent primary spinal cord tumor in adults. Surgery is the treatment of choice in most cases. However, while complete resection is achieved in approximately 80% of cases, clinical improvement is achieved in 15% only. Five-ALA fluorescence–guided surgery seems to be useful for this tumor type. Methods: We studied 14 patients undergoing 5-ALA fluorescence-guided surgery for spinal cord ependymomas in our service. The modified McCormick classification was used to determine clinical status and the degree of resection was assessed with magnetic resonance imaging. Results: Of the 14 patients, the tumor showed an intense emission of fluorescence in 12 and the fluorescence was weak and nonuniform in two. Complete resection was achieved in 11 cases. According to the McCormick classification, 10 patients improved, two remained the same, and two deteriorated. Conclusions: Our results confirm that 5-ALA fluorescence-guided resection is useful in spinal cord ependymoma resection. Although the rate of complete resections is similar to that in published series without 5-ALA, clinical results are better when using 5-ALA with a lower percentage of clinical deterioration.

Protective Effects of Sea Spaghetti-Enriched Restructured Pork Against Dietary Cholesterol: Effects on Arylesterase and Lipoprotein Profile and Composition of Growing Rats

Adriana R. Schultz Moreira,Raúl Olivero-David,Miguel Vázquez-Velasco,Laura González-Torres,Juana Benedí,Sara Bastida,Francisco J. Sánchez-Muniz 한국식품영양과학회 2014 Journal of medicinal food Vol.17 No.8

There is a general assumption that seaweeds are hypocholesterolemics and antioxidants. However, controversial results suggest specific properties for each individual alga. This study aims to assess the effect of including Sea Spaghetti alga (S) in a restructured-pork (RP) diet, both enriched and not enriched with dietary cholesterol, on arylesterase (AE) activity and lipoprotein concentration and composition of Wistar rats. Four groups of 10 growing male Wistar rats were each fed a mix of 85% AIN-93M diet and 15% freeze-dried RP for 5 weeks. The control group (C) consumed control RP-C; the S group consumed RP-S with 5% seaweeds; the Chol-C group consumed the C diet but enriched with cholesterol (2.43%) and cholic acid (0.49%); the Chol-S group consumed the S diet but enriched with cholesterol and cholic acid. AE activity was five times higher (P < .01) in S compared with C rats, but three times lower in Chol-S compared with Chol-C rats (P < .01). The Chol-C diet induced hypercholesterolemia but reduced triglycerides (TG), giving rise to the presence of very low-density lipoprotein (VLDL) that was enriched in cholesterol. The Chol-S diet partially blocked (P < .001) the hypercholesterolemic induction of the Chol-C diet, and reduced TG levels (P < .05) with respect to S rats. The cholesterol supplementation increased total cholesterol, VLDL-cholesterol, and intermediate-density lipoprotein + LDL-cholesterol (IDL + LDL)-cholesterol (P < .001) in Chol-C rats, but the effect was lower in the Chol-S diet. In conclusion, RP-S increases the antioxidant capacity within a noncholesterol enriched diet while improving the lipoprotein profile within a cholesterol-enriched diet.