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Removing contaminants from tannery wastewater by chemical precipitation using CaO and Ca(OH)2

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Chinese Journal of Chemical Engineering 2020年第4期28卷 1107-1111页

作者： Adriana reyes-Serrano Joel ELópez-Alejo Manuel AHernández-Cortázar ignacio Elizalde Instituto Politécnico Nacional Centro Mexicano para la Producción más LimpiaCiudad de México 07340Mexico

The removal of Cr,sulfates and Chemical Oxygen Demand(COD)from industrial tannery wastewater by chemical precipitation was carried out using Calcium oxide(CaO)and Calcium hydroxide(Ca(OH)2).Different doses of alkalis,ranging from deficiency to excess hydroxyl species over the stoichiometric necessary,were used to remove theoretically the 100%of Cr[0.3-3.2 g alkali·(g Cr^3+)^-1].The precipitation was carried out at room temperature,10 min of vigorous stirring,200 r·min^-1 and a settling time of 24 h,followed by separation and characterization of liquid *** result of addition of alkalis,pH underwent increase as did the alkali *** removal of Cr,and sulfates also increased as alkali concentration did,although for first species the changes at higher alkali contents were less *** removal on the other hand,did not follow a unique trend,instead exhibited a *** on our results,selection of a specific dose of alkali was carried out taking as reference the efficiency on total chromium removal,keeping the pH in the range 7 to 9 to ensure Cr precipitation as chromium *** those conditions,jar test was used to produce enough liquid product in order to determine the removal percent of several other *** removal percent of the species was as follows:Cr,SO4^2-,ZnSO4,FeSO4,CN^-1,NiSO4,Fe2[Fe(CN)6]at 99.8%,66.9%,99.6%,21.4%,70.9%,52.8%and 76.4%with CaO,and 99.8%,61.6%,99.9%,7.1%,84.0%,54.4%and 90.5%with Ca(OH)2,respectively.

关键词： Tannery wastewater Alkali Removal Chromium Sulfates Synergistic effect

Correlation between the surface characteristics of carbon supports and their electrochemical stability and performance in fuel cell cathodes

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Carbon Energy 2021年第4期3卷 654-665页

作者： ignacio Jiménez-Morales Alvaro reyes-Carmona Marc Dupont Sara Cavaliere Marlene Rodlert Flavio Mornaghini Mikkel J.Larsen Madeleine Odgaard Jerzy Zajac Deborah J.Jones Jacques Rozière ICGM Universitéde Montpellier CNRSENSCMMontpellierFrance Institut Universitaire de France(IUF) ParisFrance Imerys Graphite and Carbon BodioSwitzerland IRD Fuel Cells A/S Odense SØDenmark

In this paper,an extensive characterisation of a range of carbon blacks(CB)with similar surface area but different surface chemistry is carried out by flow calorimetry,Raman spectroscopy,dynamic water vapour sorption,instrumental gas analysis,nitrogen adsorption/desorption and high potential *** these carbon materials as supports,Pt/CB electrocatalysts are prepared by microwave-assisted polyol-mediated synthesis in gram ***,morphological and electrochemical properties of the prepared electrocatalysts are evaluated by X-ray diffraction,transmission electron microscopy,rotating disc electrode and in situ fuel cell characterisation of the corresponding membrane-electrode *** obtained results allow to establish a relationship between surface chemistry and electrochemical properties useful for the design of Pt/C catalyst layers with high performance and stability.

关键词： carbon black electrocatalyst support fuel cell cathodes surface properties

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巧手编织生命之花

疯狂英语（新悦读） 2015年第7期 25-26页

作者： ignacio de los reyes Wendy

如果有人告诉你,即将植入你心脏里的医治器械是人手编织的,你敢用吗?犹豫了吧。但在玻利维亚,正是心灵手巧的妇女们织出的金属小器械拯救了数百名儿童的性命。这些玻利维亚妇女有多年编织毛线织物的经验,她们织帽子、毛衣、毯子,现在她... 详细信息

如果有人告诉你,即将植入你心脏里的医治器械是人手编织的,你敢用吗?犹豫了吧。但在玻利维亚,正是心灵手巧的妇女们织出的金属小器械拯救了数百名儿童的性命。这些玻利维亚妇女有多年编织毛线织物的经验,她们织帽子、毛衣、毯子,现在她们还编织高科技的医疗器械。

关键词：生命之花动脉导管 ductus 先天性心脏病 Cynthia 洛伊特种合金 congenital 镍钛合金 everything

Geochemical Prospection of the Chapala Ciénega at Michoacán State

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International Journal of Geosciences 2014年第9期5卷 1007-1011页

作者： José Martínez reyes Ivan Vera Romero Meliton Estrada Jaramillo Agustina Ortiz Soriano ignacio Moreno Nava Francisco Gabriel Montes Ayala Francisco García ávalos Ernesto Mendez Ruiz 1University of the Ciénega of Michoacán State Sahuayo México 2Michoacan Society of History Archaeology and Geography A.C. La Palma de Jesús México Michoacan Society of History Archaeology and Geography A.C. La Palma de Jesús México University of the Ciénega of Michoacán State Sahuayo México

The geochemical prospection as a branch of Applied Geochemistry or “Geochemistry of the Landscape” studies the spatial and temporal location of geochemical anomalies in order to locate geological resources of economic value. The Ciénega de Chapala zone in Michoacán is located east of the Citala rift hosting a geological system that leads to regional hydrothermal activity, mainly the Pajacuaran and Ixtlan failures. The regional geothermics include a superficial hydrothermalism consisting of springs and wells of hot water with temperatures between 48°C and 94°C in Ixtlan de los Hervores and mud volcanoes in the water with temperatures between 48°C and 94°C in Ixtlan de los Hervores and mud volcanoes in the Los Negritos. The waters and gases of these hydrothermal manifestations have physicochemical characteristics that indicate the presence of geothermal fluids. To search for possible presence of minerals of economic value, a study of elemental chemical analysis was performed by scanning electron microscopy in samples of rock of the sierra de Pajacuaran, the result of the analysis is clearly abnormal values which may be indicative a geochemical anomaly as well as the possible presence of minerals of economic value in the region. Given the above, the area of the Ciénega de Chapala in Michoacán is a zone where work can be continued both geothermal and mineralogical exploration by conventional techniques or even totally innovative technologies.

关键词： Geochemical Prospection Ciénega Michoacán

N-acetyl-L-cysteine combined with mesalamine in the treatment of ulcerative colitis: Randomized,placebo-controlled pilot study

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World Journal of Gastroenterology 2008年第18期14卷 2851-2857页

作者： Luis G Guijarro Jose Mate Javier P Gisbert Jose Luis Perez-Calle ignacio Marín-Jimenez Encarna Arriaza Tomás Olleros Mario Delgado Maria S Castillejo David Prieto-Merino Venancio Gonzalez Lara Amado Salvador Pea Department of Biochemistry and Molecular Biology CIBERehd Alcalá University Alcalá de Henares Madrid Spain Gastroenterology Unit CIBERehd La Princesa University Hospital Autonomous University Madrid Spain Gastroenterology Unit Gregorio Maraón University Hospital Complutense University Madrid Spain Group Farmasierra SL. Ctra N-Ⅱ Km 26.200 San Sebastián de los Reyes Madrid Spain Laboratory of Immunogenetics Department of Pathology VU University Medical Center Amsterdam The Netherlands

AIM: To evaluate the effectiveness and safety of oral N-acetyl-L-cysteine (NAC) co-administration with mesalamine in ulcerative colitis (UC) patients. METHODS: Thirty seven patients with mild to moderate UC were randomized to receive a four-wk course of oral mesalamine (2.4 g/d) plus N-acetyl-L-cysteine (0.8 g/d) (group A) or mesalamine plus placebo (group B). Patients were monitored using the Modified Truelove-Witts Severity Index (MTWSI). The primary endpoint was clinical remission (MTWSI ≤ 2) at 4 wk. Secondary endpoints were clinical response (defined as a reduction from baseline in the MTWSI of ≥ 2 points) and drug safety. The serum TNF-α, interleukin-6, interleukin-8 and MCP-1 were evaluated at baseline and at 4 wk of treatment. RESULTS: Analysis per-protocol criteria showed clinical remission rates of 63% and 50% after 4 wk treatment with mesalamine plus N-acetyl-L-cysteine (group A) and mesalamine plus placebo (group B) respectively (OR = 1.71; 95% CI: 0.46 to 6.36; P = 0.19; NNT = 7.7). Analysis of variance (ANOVA) of data indicated a significant reduction of MTWSI in group A (P = 0.046) with respect to basal condition without significant changes in the group B (P = 0.735) during treatment. Clinical responses were 66% (group A) vs 44% (group B) after 4 wk of treatment (OR = 2.5; 95% CI: 0.64 to 9.65; P = 0.11; NNT = 4.5). Clinical improvement in group A correlated with a decrease of IL-8 and MCP-1. Rates of adverse events did not differ significantly between both groups. CONCLUSION: In group A (oral NAC combined with mesalamine) contrarily to group B (mesalamine alone), the clinical improvement correlates with a decrease of chemokines such as MCP-1 and IL-8. NAC addition not produced any side effects.

关键词： Ulcerative colitis Interleukin Mesalamine N-acetyl-L-cysteine

Dendritic cell deficiencies persist seven months after SARS-CoV-2 infection

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Cellular & Molecular Immunology 2021年第9期18卷 2128-2139页

作者： alberto Pérez-Gómez Joana Vitallé Carmen Gasca-Capote Alicia Gutierrez-Valencia María Trujillo-Rodriguez Ana Serna-Gallego Esperanza Muñoz-Muela María de los reyes Jiménez-Leon Mohamed Rafii-El-Idrissi Benhnia Inmaculada Rivas-Jeremias Cesar Sotomayor Cristina Roca-Oporto Nuria Espinosa Carmen Infante-Domínguez Juan Carlos Crespo-Rivas alberto Fernández-Villar Alexandre Pérez-González Luis Fernando López-Cortés Eva Poveda Ezequiel Ruiz-Mateos JoséMiguel Cisneros Sonsoles Salto-Alejandre Judith Berastegui-Cabrera Pedro Camacho-Martínez Carmen Infante-Domínguez Marta Carretero-Ledesma Juan Carlos Crespo-Rivas Eduardo Márquez JoséManuel Lomas Claudio Bueno Rosario Amaya JoséAntonio Lepe Jerónimo Pachón Elisa Cordero Javier Sánchez-Céspedes Manuela Aguilar-Guisado Almudena Aguilera Clara Aguilera Teresa Aldabo-Pallas Verónica Alfaro-Lara Cristina Amodeo Javier Ampuero María Dolores Avilés Maribel Asensio Bosco Barón-Franco Lydia Barrera-Pulido Rafael Bellido-Alba Máximo Bernabeu-Wittel Candela Caballero-Eraso Macarena Cabrera Enrique Calderón Jesús Carbajal-Guerrero Manuela Cid-Cumplido Yael Corcia-Palomo Juan Delgado Antonio Domínguez-Petit Alejandro Deniz Reginal Dusseck-Brutus Ana Escoresca-Ortega Fátima Espinosa Nuria Espinosa Michelle Espinoza Carmen Ferrándiz-Millón Marta Ferrer Teresa Ferrer ignacio Gallego-Texeira Rosa Gámez-Mancera Emilio García Horacio García-Delgado Manuel García-Gutiérrez María Luisa Gascón-Castillo Aurora González-Estrada Demetrio González Carmen Gómez-González Rocío González-León Carmen Grande-Cabrerizo Sonia Gutiérrez Carlos Hernández-Quiles Inmaculada Concepción Herrera-Melero Marta Herrero-Romero Luis Jara Carlos Jiménez-Juan Silvia Jiménez-Jorge Mercedes Jiménez-Sánchez Julia Lanseros-Tenllado Carmina López Isabel López Álvaro López-Barrios Luis F.López-Cortés Rafael Luque-Márquez Daniel Macías-García Guillermo Martín-Gutiérrez Luis Martín-Villén JoséMolina Aurora Morillo María Dolores Navarro-Amuedo Dolores Nieto-Martín Francisco Ortega María Paniagua-García Amelia Peña-Rodríguez E Clinical Unit of Infectious Diseases Microbiology and Preventive MedicineInstitute of Biomedicine of Seville(IBiS)Virgen del Rocío University HospitalCSICUniversity of SevilleSevilleSpain Department of Medical Biochemistry Molecular Biologyand ImmunologySchool of MedicineUniversity of SevilleSevilleSpain Pneumology Service Galicia Sur Health Research Instituto(IIS Galicia Sur)SERGAS-UVigoVigoSpain Infectious Diseases Unit Department of Internal MedicineComplexo HospitalarioUniversitario de VigoIIS Galicia SurSERGAS-UVigoVigoSpain Group of Virology and Pathogenesis Galicia Sur Health Research Institute(IIS Galicia Sur)-Complexo Hospitalario Universitario de VigoSERGAS-UVigoVigoSpain Unit of Infectious Diseases Microbiologyand Preventive MedicineVirgen del Rocío University HospitalSevilleSpain Institute of Biomedicine of Seville(IBiS) Virgen del Rocío University Hospital/CSIC/University of SevilleSevilleSpain Medico-Surgical Unit of Respiratory Diseases Virgen del Rocío University HospitalSevilleSpain Unit of Emergencies Virgen del Rocío University HospitalSevilleSpain Intensive Care Unit Virgen del Rocío University HospitalSevilleSpain Department of Medicine University of SevilleSevilleSpain Cardiology and Cardiovascular Surgery Unit Virgen del Rocío University HospitalSevilleSpain Rheumatology Unit Virgen del Rocío University HospitalSevilleSpain Internal Medicine Unit Virgen del Rocío University HospitalSevilleSpain Digestive and Hepatobiliary Unit Virgen del Rocío University HospitalSevilleSpain Neurology and Clinical Neurophysiology Unit Virgen del Rocío University HospitalSevilleSpain Endocrinology and Nutrition Unit Virgen del Rocío University HospitalSevilleSpain Urology and Nephrology Unit Virgen del Rocío University HospitalSevilleSpain Unit of Clinical Investigation and Clinical Trials Virgen del Rocío University HospitalSevilleSpain

Severe Acute Respiratory Syndrome Coronavirus(SARS-CoV)-2 infection induces an exacerbated inflammation driven by innate immunity *** cells(DCs)play a key role in the defense against viral infections,for instance plasmacytoid DCs(pDCs),have the capacity to produce vast amounts of interferon-alpha(IFN-α).In COVID-19 there is a deficit in DC numbers and IFN-αproduction,which has been associated with disease *** this work,we described that in addition to the DC deficiency,several DC activation and homing markers were altered in acute COVID-19 patients,which were associated with multiple inflammatory ***,previously hospitalized and nonhospitalized patients remained with decreased numbers of CD1c+myeloid DCs and pDCs seven months after SARS-CoV-2 ***,the expression of DC markers such as CD86 and CD4 were only restored in previously nonhospitalized patients,while no restoration of integrinβ7 and indoleamine 2,3-dyoxigenase(IDO)levels were *** findings contribute to a better understanding of the immunological sequelae of COVID-19.

关键词： SARS-CoV-2 COVID-19 Dendritic cell Long-COVID

Rare-Earth Doped GdVO₄ by Sol-Gel Method: Structural and Luminescence Properties

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World Journal of Engineering and Technology 2022年第4期10卷 907-922页

作者： D. Y. Medina-Velázquez A. D. J. Morales-Ramírez A. A. Morales-Hernández B. Gonzalez L. Ramírez-García E. Garfías-García J. Oliva C. R. Garcia J. reyes-Miranda M. A. Barron E. Osorio-de-la-Rosa Universidad Autónoma Metropolitana-Azcapotzalco Ciencias Básicas e Ingeniería Reynosa México Instituto Politécnico Nacional CIITEC IPN Cerrada de CECATI S/N Col. México City México Instituto Politécnico Nacional ESIQIE IPN México City México CONACyT-División de Materiales Avanzados Instituto Potosino de Investigación Científica y Tecnológica A. C. San Luis Potosí México Facultad de Ciencias Físico Matemáticas Universidad Autónoma de Coahuila Edif. A Unidad Camporredondo Saltillo México Comonfort Col. Del Bosque. C.P. 77019 Chetumal Quintana Roo México.6 CONACYT-Universidad Autónoma del Estado de Quintana Roo Boulevard Bahía s/n esq. Ignacio Chetumal México

Rare earths have been extensively developed in recent years, however, new hosts allow high excitation and emission efficiency, in this sense, gadolinium vanadate has been extensively studied and in previous works it has been widely used in down conversion systems. Because of the strong absorption of the VO4 groups and efficient energy transfer from GdVO4 to lanthanide ions, in this work its up-conversion properties were studied when is co-doped with Yb3+, X3+ where X = Tm, Er and Ho. The powders synthesized presented a high crystallinity and a rounded morphology and exhibit a high luminescence when are excited with IR radiation.

关键词： Gadolinium Rare Earths Up Convertion

Comprehensive Left Ventricular Mechanics Analysis by Speckle Tracking Echocardiography in COVID-19

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World Journal of Cardiovascular Diseases 2021年第2期11卷 113-125页

作者： Francisco J. González-Ruiz Emmanuel A. Lazcano-Díaz Zuilma Y. Vásquez-Ortiz Fernanda Bernal-Ceballos Rodrigo Gopar-Nieto Consuelo Orihuela-Sandoval José P. Hernández-reyes Edgar García-Cruz Eduardo Bucio-Reta Ángel Ramos-Enríquez Luis A. Cota-Apodaca Luis Efren-Santos Blanca Estela Broca-García Daniel Manzur-Sandoval Efrén Melano-Carranza Fernandez de la Reguera Guillermo Gustavo Rojas-Velasco Francisco Baranda-Tovar Department of Cardiovascular Critical Care National Institute of Cardiology “Dr. Ignacio Chávez” México City México Department of Echocardiography National Institute of Medical Science and Nutrition “Dr. Salvador Zubirán” México City México PhD Program National University of Mexico (UNAM) México City México Cardiovascular Diseases Department National Institute of Cardiology “Dr. Ignacio Chávez” México City México

Background: Cardiac involvement and the consequences of inflammation induced by SARS-CoV2 infection could have catastrophic long-term consequences. Left ventricular mechanics could identify a specific pattern of myocardial fiber damage in patients infected with COVID-19. To our knowledge there are no publications referring to the global description of ventricular mechanics in patients with COVID-19. Objective: To describe left ventricular mechanics in hospitalized patients with COVID-19. Methods: In this cross-sectional study, we included 40 hospitalized patients with confirmed diagnostic of COVID-19, from April 11, 2020, to September 6, 2020. Demographic and laboratory data, clinical and echocardiographic characteristics were collected, as well as events during hospitalization. Left ventricular deformation was analyzed and reported. Results: Subclinical dysfunction was observed in 82.5% (left ventricular longitudinal strain [LVGLS] -17.05% and global circumferential strain [GCS] -18.6%) of the patients, likewise, the mean twist and apical rotation were preserved, and even increased as part of the compensating mechanism to maintain the ejection fraction. Conclusion: In patients hospitalized with COVID-19, despite having a normal left ventricular ejection fraction, subclinical myocardial damage was found, manifested by a decrease in Global Longitudinal Strain (GLS) and Global Circumferential Strain (GCS). This behavior is similar to that of cardiomyopathies in the early stage of the disease, and given the pathophysiological mechanisms involved in the disease, its long-term consequences should be monitored and evaluated.

关键词： COVID-19 Speckle Tracking Echocardiography Myocarditis Cardiomyopa-thy Cardiac Mechanics Strain Myocardial Damage Deformation Imaging Myocardial Strain