Methodology for the integration of a high-speed train in Maintenance 4.0

Bustos Alejandro,Rubio Higinio,Soriano-Heras Enrique,Castejon Cristina 한국CDE학회 2021 Journal of computational design and engineering Vol.8 No.6

The fourth industrial revolution is changing the way industries face their problems, including maintenance. The railway industry is moving to adopt this new industry model. The new trains are designed, manufactured, and maintained following an Industry 4.0 methodology, but most of the current trains in operation were not designed with this technological philosophy, so they must be adapted to it. In this paper, a new methodology for adapting a high-speed train to Industry 4.0 is proposed. That way, a train manufactured before this new paradigm can seize the advantages of Maintenance 4.0. This methodology is based on four stages (physical system, digital twin, information and communication technology infrastructure, and diagnosis) that comprise the required processes to digitalize a railway vehicle and that share information between them. The characteristics that the data acquisition and communication systems must fulfil are described, as well as the original signal processing techniques developed for analysing vibration signals. These techniques allow processing experimental data both in real time and deferred, according to actual maintenance requirements. The methodology is applied to determine the operating condition of a high-speed bogie by combining the signal processing of actual vibration measurements taken during the normal train operation and the data obtained from simulations of the digital twin. The combination of both (experimental data and simulations) allows establishing characteristic indicators that correspond to the normal running of the train and indicators that would correspond to anomalies in the behaviour of the train.

Antibacterial and Antifungal Activities of Some Mexican Medicinal Plants

E. Ruiz-Bustos,C. Velazquez,A. Garibay-Escobar,Z. García,M. Plascencia-Jatomea,M.O. Cortez-Rocha,J. Hernandez-Martínez,R.E. Robles-Zepeda 한국식품영양과학회 2009 Journal of medicinal food Vol.12 No.6

In Mexico about 4,000 plant species have some medicinal use. The aim of this work was to evaluate the antimicrobial activity of six Mexican medicinal plants against fungi and Gram-positive and Gram-negative bacteria. Methanolic extracts were prepared from the Mexican medicinal plants Amphypteringium adstrigens, Castella tortuosa, Coutarea latiflora, Ibervillea sonorae, Jatropha cuneata, and Selaginella lepidophylla. The antibacterial and antifungal activities of the plants were determined by the broth microdilution method and the radial growth inhibition assay, respectively. All Mexican plants tested showed antimicrobial activity. Among the six plant extracts analyzed, J. cuneata showed the highest growth-inhibitory activity against fungi, Gram-positive and Gram-negative bacteria (J. cuneata > A. adstrigens > C. latiflora > C. tortuosa > I. sonorae ≈ S. lepidophylla). Shigella flexneri and Staphylococcus aureus were the most susceptible bacteria to plant extracts. Complete inhibition of S. flexneri growth was observed with J. cuneata methanolic extract at 90μg/mL. This plant extract also showed the strongest antifungal activity against Fusarium verticillioides and Aspergillus niger. Our data suggest that the medicinal plants tested have important antimicrobial properties. This is the first report describing the antimicrobial activities of several of the Mexican medicinal plants used in this study.

Substitutions at the gadolinium and the strontium sites in the RuSr2GdCu2O8 magnetic superconductor

R. Ruiz-Bustos,M. H. Aguirre,E. Mor?n,R. Saez-Puche,M. ?. Alario-Franco 한국물리학회 2002 Current Applied Physics Vol.2 No.6

The coexistence of superconductivity and magnetic order seems to take place in the so called ruthenate-cuprates. Previous workhas mainly focused on RuSr2GdCu 2O8 where a magnetic transition is observed at 133 K and superconductivity has been claimedbelow Tc . 46 K.At room pressure, Sm, Eu and Gd seem to be the only RE elements that accept to enter into the structure of RuSr2GdCu 2O8.However high pressures and temperatures allows one to replace gadolinium by other lanthanide cations, although it is dicult to getpure samples.In order to better understand this, rather unusual behaviour, we have performed some substitutions in the title compound.The synthesis at high pressures (. 60 kbar) and high temperatures (. 1100 .C) of the title new ruthenates has been achieved andthe materials compared to the gadolinium analogue. The structure remains tetragonal (Space group: P 4/mmmrameters linearly decrease following the lanthanide contraction.We have succeeded in replacing Gd by Tb, Dy, Y, Ho and Er, magnetic susceptibility measurements reveal the existence ofinteresting phenomena. The microstructure of these compounds has been studied by high-resolution electron microscopy.Also, at room pressure, we have replaced up to 10% calcium for strontium and observed that, in consonance with the dierence inionic radii, the unit cell contracts. On the other hand, the calcium-doped sample shows a positive magnetic susceptibility at 5 K.. 2002 Elsevier Science B.V. All rights reserved.

“조직의 성공적 변화를 위한 21세기 리더십 : 뇌교육과 파워브레인 시스템”

파티마 부스토스 초이(Fatima Bustos-Choy) 한국뇌과학연구원 2020 브레인 Vol.81 No.-

Manual lymphatic drainage guided by real-time indocyanine green lymphography in breast cancer-related lymphedema

Ciudad, Pedro,Bustos, Samyd S.,Forte, Antonio J.,Huayllani, Maria T.,Manrique, Oscar J.,Chen, Hung-Chi,Trignano, Emilio Korean Society of Plastic and Reconstructive Surge 2021 Archives of Plastic Surgery Vol.48 No.2

"A La Recherche" of Functions for the Spore Protein SASP-E from Bacillus subtilis

( Ruzal Sandra M ),( Patricia L. Bustos ),( Carmen Sanchez Rivas ) 한국미생물 · 생명공학회 2013 Journal of microbiology and biotechnology Vol.23 No.1

We previously observed that Bacillus subtilis spores from sspE mutants presented a lower germination capacity in media containing high salt concentrations (0.9M NaCl). This deficiency was attributed to the absence of SASP-E (gamma-type small-acid-soluble protein), rich in osmocompatible amino acids released by degradation. Herein we observed that, in addition, this mutant spore presented a reduced capacity to use L-alanine as germinant (L-ala pathway), required longer times to germinate in calcium dipicolinate (Ca2+-DPA), but germinated well in asparagine, glucose, fructose, and potassium chloride (AGFK pathway). Moreover, mild sonic treatment of mutant spores partially recovered their germination capacity in L-ala. Spore qualities were also altered, since sporulating colonies from the sspE mutant showed a pale brownish color, a higher adherence to agar plates, and lower autofluorescence, properties related to their spore coat content. Furthermore, biochemical analysis showed a reduced partition in hexadecane and a higher content of Ca2+-DPA when compared with its isogenic wild-type control. Coat protein preparations showed a different electrophoretic pattern, in particular when detected with antibodies against CotG and CotE. The complementation with a wild-type sspE gene in a plasmid allowed for recovering the wild-type coat phenotype. This is the first report of a direct involvement of SASP-E in the spore coat assembly during the differentiation program of sporulation.

Effect of Extruded Products Made with Cassava Starch Blended with Oat Fiber and Resistant Starch on the Hypocholesterolemic Properties as Evaluated in Hamsters

YK Chang,HE Martinez-Flores,F Martinez-Bustos,VC Sgarbieri 한국식품영양과학회 2002 Preventive Nutrition and Food Science Vol.7 No.2

To examine the cholesterol-lowering effects of extruded products made with cassava starch (CS), blends of cassava starch with either resistant starch (CS-RS) or oat fiber (CS-OF) hamsters were fed with diets containing a high-cholesterol (2%), high-fat (17%) diet for 20 days. Hamsters fed with a diet containing no cholesterol were used as a control. Total cholesterol (TC) levels in the CS-RS, CS-OF groups were significantly (p>0.05) lower compared to the CS group by 11.5%, 8.5%, respectively. Also, the diets containing fibers decreased the value of low-density lipoproteins plus very low-density lipoproteins fraction by 32.4% (CS-RS diet), 51.7% (CS-OF), respectively, as compared to the CS diet. Total lipid values were significantly (p< 0.05) lower in hamsters fed the CS-RS diet (916 mg/dL), CS-OF diet (964 mg/dL) as compared to those fed the CS diet (1661 mg/dL). The results obtained in this study suggest that extruded products containing cassava starch blended with either resistant starch or oat fiber, could prevent health problems associated with high levels of cholesterol, hypertriglyceridemia induced by a high cholesterol, fat diet.

Transient anomaly imaging by the acoustic radiation force

Ammari, H.,Garapon, P.,Guadarrama Bustos, L.,Kang, H. Academic Press 2010 Journal of differential equations Vol.249 No.7

This paper is devoted to provide a solid mathematical foundation for a promising imaging technique based on the acoustic radiation force, which acts as a dipolar source. From the rigorously established asymptotic expansions of near- and far-field measurements of the transient wave induced by the anomaly, we design asymptotic imaging methods leading to a quantitative estimation of physical and geometrical parameters of the anomaly.

Lessons Learnt from an 11-year Experience with Lymphatic Surgery and a Systematic Review of Reported Complications: Technical Considerations to Reduce Morbidity

Ciudad Pedro,Escandón Joseph M.,Manrique Oscar J.,Bustos Valeria P. 대한성형외과학회 2022 Archives of Plastic Surgery Vol.49 No.1

Complications experienced during lymphatic surgery have not been ubiquitously reported, and little has been described regarding how to prevent them. We present a review of complications reported during the surgical management of lymphedema and our experience with technical considerations to reduce morbidity from lymphatic surgery. A comprehensive search across different databases was conducted through November 2020. Based on the complications identified, we discussed the best approach for reducing the incidence of complications during lymphatic surgery based on our experience. The most common complications reported following lymphovenous anastomosis were re-exploration of the anastomosis, venous reflux, and surgical site infection. The most common complications using groin vascularized lymph node transfer (VLNT), submental VLNT, lateral thoracic VLNT, and supraclavicular VLNT included delayed wound healing, seroma and hematoma formation, lymphatic fluid leakage, iatrogenic lymphedema, soft-tissue infection, venous congestion, marginal nerve pseudoparalysis, and partial flap loss. Regarding intra-abdominal lymph node flaps, incisional hernia, hematoma, lymphatic fluid leakage, and postoperative ileus were commonly reported. Following suction-assisted lipectomy, significant blood loss and transient paresthesia were frequently reported. The reported complications of excisional procedures included soft-tissue infections, seroma and hematoma formation, skin-graft loss, significant blood loss, and minor skin flap necrosis. Evidently, lymphedema continues to represent a challenging condition; however, thorough patient selection, compliance with physiotherapy, and an experienced surgeon with adequate understanding of the lymphatic system can help maximize the safety of lymphatic surgery.

Definitive Closure of the Tracheoesophageal Puncture Site after Oncologic Laryngectomy: A Systematic Review and Meta-Analysis

Joseph M. Escandón,Arbab Mohammad,Saumya Mathews,Valeria P. Bustos,Eric Santamaría,Pedro Ciudad,Hung-Chi Chen,Howard N. Langstein,Oscar J. Manrique 대한성형외과학회 2022 Archives of Plastic Surgery Vol.49 No.5

Tracheoesophageal puncture (TEP) and voice prosthesis insertion following laryngectomy may fail to form an adequate seal. When spontaneous closure of the fistula tract does not occur after conservativemeasures, surgical closure is required. The purpose of this study was to summarize the available evidence on surgical methods for TEP site closure. A comprehensive search across PubMed, Web of Science, SCOPUS, and Cochrane was performed to identify studies describing surgical techniques, outcomes, and complications for TEP closure.We evaluated the rate of unsuccessful TEP closure after surgical management. A meta-analysis with a random-effect method was performed. Thirty-four studies reporting on 144 patients satisfied inclusion criteria. The overall incidence of an unsuccessful TEP surgical closure was 6% (95% confidence interval [CI] 1–13%). Subgroup analysis showed an unsuccessful TEP closure rate for silicone button of 8% (95% CI<1–43%), 7% (95% CI<1–34%) for dermal graft interposition,<1% (95%CI<1–37%) for radial forearm free flap,<1% (95% CI<1–52%) for ligation of the fistula, 17% (95% CI<1–64%) for interposition of a deltopectoral flap, 9% (95% CI<1– 28%) for primary closure, and 2% (95% CI<1–20%) for interposition of a sternocleidomastoid muscle flap. Critical assessment of the reconstructive modality should take into consideration previous history of surgery or radiotherapy. Nonirradiated fields and small defects may benefit fromfistula excision and tracheal and esophagealmultilayer closure. In cases of previous radiotherapy, local flaps or free tissue transfer yield high successful TEP closure rates. Depending on the defect size, sternocleidomastoid muscle flap or fasciocutaneous free flaps are optimal alternatives.