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Transesterification of sunflower oil in microchannels with circular obstructions

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Chinese Journal of Chemical Engineering 2018年第4期26卷 852-863页

作者： Harrson S.Santana Joao L.Silva Jr Deborah S.Tortola Osvaldir P.taranto School of Chemical Engineering University of Campinas13083-852 CampinasSPBrazil Federal Institute of Education Science and Technology of South of Minas Gerais-IFSULDEMINAS37560-260 Poaso AlegreMGBrazil

The present paper studied numerical and experimentally the transesterification reaction between sunflower oil and ethanol with NaO H catalyst in microchannels with circular obstructions. The micromixer design influence on fluid mixing and oil conversion was investigated for a range of operating conditions: Reynolds number(Re = 0.1–100),Temperature(25–75 °C), ethanol/oil molar ratio(6-12), and catalyst concentration(0.75 wt%–1.25 wt%), using three microchannel configurations(Length = 35 mm; Width = 1500 μm; Height = 200 μm): T-shape – channel without obstructions; MCO – channel with 3 obstructions ensemble – equally disposed over longitudinal length;MWO – channel with 7 obstructions ensemble. The MCO micromixer was based on literature work, and the MWO is a totally new micromixer design. Experimental tests were conducted in similar conditions in microreactors using these micromixers(Length = 411 mm) made of polydimethylsiloxane. The MCO configuration presented the highest performance(mixing index of 0.80 at Re = 100), oil conversion of 81.13% at 75 °C, molar ratio of 9 and catalyst concentration of 1%. Experimental results showed high conversions for MCO and MWO configurations(99.99%) at 50 °C, molar ratio of 9 and catalyst concentration of 1%, with a residence time of 12 s.

关键词： Biodiesel Sunflower oil-ethanol Transesterification reaction Circular obstructions Microreactor Numerical simulation

3D printed millireactors for process intensification

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Chinese Journal of Chemical Engineering 2020年第1期28卷 180-190页

作者： Harrson S.Santana Alan C.Rodrigues Mariana G.M.Lopes Felipe N.Russo Joao L.Silva Jr Osvaldir P.taranto School of Chemical Engineering University of CampinasBrazil Federal Institute of Education Science and Technology of South of Minas GeraisBrazil

The scope of the present research aims at demonstrating the 3D printing use in the manufacturing of microchannels for chemical process applications. A comparison among digital model processing applications for 3D print(slicers) and a print layer thickness analysis were performed. The 3D print fidelity was verified in several devices, including the microchannels’ printing with and without micromixer zones. In order to highlight the 3D print potential in Chemical Engineering, the biodiesel synthesis was also carried out in a millireactor manufactured by 3D printing. The millireactor operated under laminar flow regime with a total flow rate of 75.25 ml·min^-1(increment of about 130 times over traditional microdevices used for biodiesel production).The printed millireactor provided a maximum yield of Ethyl Esters of 73.51% at 40 ℃, ethanol:oil molar ratio of7 and catalyst concentration of 1.25 wt% and residence time about 10 s. As a result of flow rate increment attained in the millireactor, the number of required units for scaling-up the chemical processes is reduced. Using the approach described in the present research, anyone could produce their own millireactor for chemical process in a simple way with the aid of a 3D printer.

关键词： Process intensification 3D printer Millireactors Micromixers Microdevices Biodiesel

Development and Validation of an Ion Chromatography Method for the Simultaneous Determination of Seven Food Additives in Cheeses

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Journal of Analytical Sciences, Methods and Instrumentation 2013年第3期3卷 30-37页

作者： Marco Iammarino Aurelia Di taranto Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata Foggia Italy.

Cheeses are characterized by several chemical-physical properties that make it difficult for the microorganisms growth, consequently. The actual European legislation allows the addition of few food additives in this type of food products. In this work, the entire procedure of extraction, purification, chromatographic separations and quali/quantitative determination of seven food additives (sorbic acid, benzoic acid, lactic acid, acetic acid, nitrites, nitrates and phosphates) was developed and applied for the analysis of different types of cheese (mozzarella, cheese spread, semi-hard and hard cheeses). Through validation procedure it was possible to evaluate the most important validation parameters. Extended calibration curves (r > 0.990) were obtained for all the analyzed compounds. Recovery values ranged from 72.8% to 98.4% and a good repeatability was obtained, with precision levels in the range of 0.03% - 0.11% (n = 6). The potential and feasibility of the method were tested by analysing real samples, such as mozzarella, cheese spread, semi-hard and hard cheeses, confirming that the method is well suited to satisfy the demands for accurate confirmation analyses of seven food additives in cheeses, which is especially valuable in official check analyses and in monitoring schemes.

关键词： Dairy Products Cheese Food Additives Food Preservatives Nitrites Nitrates Ion Chromatography Validation

Fluid-dynamics evaluation in a conical spouted bed and characterization of foxtail millet seeds

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Particuology 2015年第6期13卷 75-81页

作者： Lidiane Diniz do.Nascimento Lorena Gomes Corumba Sandra Cristina dos Santos Rocha Osvaldir Pereira taranto Cristiane Maria Leal Costa Lenio Jose Guerreiro de Faria Federal University of Pard Faculty of Chemical Engineering Laboratory of Drying and Particle Coating Augusto Correa Street w/n 66075-110 BelemPA Brazil University of Campinas School of Chemical Engineering. Albert Einstein Avenue 500 13083-852 Campinas $8o Paulo Brazil

Foxtail millet （Setaria italica） is one of the most valuable species in economic terms in the genus Setaria and plays an important role in human nutrition, animal feed, and agriculture. The present study described chemical, physical, and quality aspects of seeds of foxtail millet. Furthermore, the fluid-dynamic behavior of the seeds was evaluated in a conical spouted bed, which has advantages in terms of promoting the cyclic and regular movement of the seed particles. Dynamic parameters of spouting （minimum spouting veloc- ity, stable and peak pressure drop） were determined and compared with those obtained from empirical correlations available in the literature. The results obtained from physical characterization showed that the seeds can be classified as belonging to Group D of Geldart, having a non-rough surface, mean diameter of 1.75 mm, and sphericity of 0.74. Fluid-dynamics analysis showed that the seeds are suitable for processing in a spouted bed, which is in agreement with the results of particle physical characterization.

关键词： Foxtail millet Parameters of spouting Characterization Conical spouted bed

Acquired ptosis associated with oculomotor and contralateral facial nerve synkinesis： the first reported case

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International Journal of Ophthalmology(English edition) 2017年第11期10卷 1783-1785页

作者： Mauro Tarallo Magda Gharbiya Maria Giuseppina Onestil Andrea Conversi Marco Toscani PasqualeFino Nicolo Scuderi Giuseppe Di taranto Department of Plastic and Reconstructive Surgery Sapienza University Viale del Policlinico 155 Rome 00161 Italy Department of Ophthalmology Sapienza University Viale del Policlinico 155 Rome 00161 Italy

Dear Editor,Evidence of oculomotor nerve（ON）synkinesis is a common occurrence following both acquired and congenital III nerve palsy[1].It is generally accepted that aberrant regeneration is the likely aetiology of ... 详细信息

关键词： the first reported case Figure Acquired ptosis associated with oculomotor and contralateral facial nerve synkinesis

Dietary Supplementation with Probiotic Strain Improves Immune-Health in Aged Mice

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Open Journal of Immunology 2016年第3期6卷 73-78页

作者： Verónica Molina Marta Médici Julio Villena Graciela Font María Pía taranto CERELA—Centro de Referencia para Lactobacilos (CONICET) Chacabuco No. 145 (T4000ILC) San Miguel de Tucumán Tucumán Argentina

Ageing is associated with several anatomical and physiological changes of the organism, and the increase in global elderly population promotes the research to develop strategies to improve their quality of life. In this work, we characterized the immunological alterations naturally produced during aging in a mice model, and evaluated the effect of probiotic Lactobacillus (L.) rhamnosus CRL1505 administration on those immunological parameters. We demonstrated that L. rhamosus CRL1505 was able to improve peritoneal macrophages phagocytic activity, and the number of intestinal IgA+ cells in aged mice, reaching values of those parameters similar to young adult mice. The results of this work indicate that is plausible that the immunobiotic CRL1505 strain may find applications as a beneficial immunomodulator in aging to reinforce the intestinal and systemic immunity. The immune modulation in aging induced by L. rhamnosus CRL1505 could lead to the development of new strategies for functional foods specifically tailored for the elderly.

关键词： Aging Inmunobiotic Immunosenescence L. rhamnosus CRL1505 1.

Sustained Viral Response to Ipilimumab Treatment in a Patient with HCV Chronic Infection and Metastatic Melanoma： A Case Report

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Journal of Pharmacy and Pharmacology 2017年第5期5卷 231-236页

作者： Daniel Eiger Rodrigo Coutinho Mariano Patricia taranto Daniela Pezzutti Domingues Armentano Rene Claudio Gansl Centro de Oncologia e Hematologia Einstein Familia Dayan-Daycoval Hospital lsraelita Albert Einstein Sao Paulo 05652-900Brazil

The treatment of metastic melanoma has rapidly evolved in the last 5 years, giving clinicians and patients the hope for long lasting responses. In the field of modern immunotherapy, we are reaching the point of an expressive percentage of patients achieving long term survival with anti-CTLA4 and anti-PD1 checkpoint inhibitors. Of note, there is a considerable amount of patients excluded from the checkpoint blockade trials because of comorbidities like chronic viral infections. A precaution to avoid autoimmune induced hepatitis rendered HBV （hepatitis B virus） and HCV （hepatitis C virus） infected patients usually ineligible, but real life data in those patients, who are getting treatment despite of that, is pointing toward the feasibility and safety of immunotherapy in this context. To ilustrate that, we report the case of a metastatic non-BRAF mutated melanoma patient with HCV chronic infection and a surprising benefit derived from ipilimumab and pembrolizumab for his latter condition.

关键词： Melanoma immunotherapy checkpoint inhibitors ipilimumab pembrolizumab HCV.

RMC （Renal Medullary Cancer）： A Case Report and Literature Review

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Journal of Pharmacy and Pharmacology 2016年第12期4卷 686-691页

作者： Patricia taranto Rodrigo Coutinho Mariano Daniel Eiger Gustavo Schvartsman Samy Tamovschi ReneeZon Filippi Andrey Soares Hospital Israelita Albert Einstein (HIAE) Sao Paulo (SP) 05651901 Brazil University of Texas MD Anderson Cancer Center (MDACC) Houston 77030 Texas USA

RMC （renal medullary carcinoma） is considered a rare entity, corresponding to approximately 2% of primary kidney tumors, usually occurring in the second decade of the patient＇s life and it is closely related with previous history of sickle cell disease. Studies have reported RMC as highly aggressive, poorly responsive to chemotherapy, surgery, radiotherapy or targeted therapy. This disease＇s median overall survival is less than 12 months. We are reporting a case of a 21-year-old woman with sickle cell trait, whose initial clinical presentation was RMC already metastatic to the liver. She underwent total right nephrectomy, and her clinical picture worsened during hospitalization with pneumonia, bowel obstruction, oliguria and death in less than two months after diagnosis, with no performance status to attempt any treatment options to her cancer at any time. Although some cases in the literature had reported good response to neoadjuvant therapy, this disease has early recurrence and little response to treatment. Our objective is to call the attention for this aggressive desease to estimulate new perspectives and further studies with chemotherapy and other different kinds of treatment, mainly because only surgical intervention is an incomplete aproach.

关键词： Kidney neoplasms RMC (renal medullary carcinoma) carcinoma renal cell sickle cell trait.

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知识女性中途隐退(英文)

大学英语 2013年第3期 7-8页

作者： James taranto 周碧书

Susanna Mancini,a 27-year-old lawyer,sent her boyfriend a photo of herself wearing a swimsuit and sunglasses."Too bad you can’t see my eyes,"she wrote him."I am so proud of my tough yuppie 2 stare!"And one tough yuppie she was,Reuters reports:"Her professional pride propelled3her early career as a *** was successful and well paid for it."That was the late

关键词：高校高等教育英语教学教学方法阅读教学