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MgO-based adsorbents for CO2 adsorption:Influence of structural and textural properties on the CO_2 adsorption performance

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Journal of Environmental Sciences 2017年第7期29卷 418-428页

作者： Gutiérrez-Bonilla Elvira Granados-Correa Francisco Sánchez-Mendieta Víctor Morales-luckie raúl Alberto National Institute of Nuclear Research Department of ChemistryA.P.18-1027Col.EscandonMigud Hidalgo DelegationZip Code 1180 Mexico D.F.Mexico Autonomous University of Mexieo State Faculty of ChemistryColon avenueintersection with ride Tollocan s/n TolucaMexicoMexico

A series of MgO-based adsorbents were prepared through solution–combustion synthesis and ball-milling *** prepared MgO-based powders were characterized using X-ray diffraction,scanning electron microscopy,N_2 physisorption measurements,and employed as potential adsorbents for CO_2 *** influence of structural and textural properties of these adsorbents over the CO_2 adsorption behaviour was also *** results showed that MgO-based products prepared by solution–combustion and ball-milling processes,were highly porous,fluffy,nanocrystalline structures in nature,which are unique physico-chemical properties that significantly contribute to enhance their CO_2 *** was found that the MgO synthesized by solution combustion process,using a molar ratio of urea to magnesium nitrate（2：1）,and treated by ball-milling during 2.5 hr（MgO-BM2.5h）,exhibited the maximum CO_2 adsorption capacity of 1.611 mmol/g at 25℃ and 1 atm,mainly via *** CO_2 adsorption behaviour on the MgO-based adsorbents was correlated to their improved specific surface area,total pore volume,pore size distribution and *** reusability of synthesized MgO-BM2.5h was confirmed by five consecutive CO_2adsorption–desorption times,without any significant loss of performance,that supports the potential of MgO-based *** results confirmed that the special features of MgO prepared by solution–combustion and treated by ball-milling during 2.5 hr are favorable to be used as effective MgO-based adsorbent in post-combustion CO_2 capture technologies.

关键词： CO_2 adsorption MgO-based adsorbents Porous materials Solution–combustion synthesis Ball-milling process Textural properties

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Influence of flooding and vegetation on carbon,nitrogen,and phosphorus dynamics in the pore water of a Spartina alterniflora salt marsh

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Journal of Environmental Sciences 2011年第2期23卷 212-221页

作者： Vanesa l.Negrin carla V.Spetter raúl O.Asteasuain Gerardo M.E.Perillo Jorge E.Marcovecchio Argentine Institute of Oceanography (IADO CONICETCCT-Bahía Blanca)Camino La Carrindanga km 75Building E-1 CC 804Bahía Blanca 8000Argentina Department of Chemistry Southern National Institute of Chemistry (INQUISUR)Southern National University (UNS)Av Alem 1253Bahía Blanca 8000Argentina Department of Geology Southern National University (UNS)San Juan 670Bahía Blanca 8000Argentina National Technological University Regional Faculty of Bahía Blanca (UTN-FRBB)11 de Abril 461Bahía Blanca 8000Argentina University of the Fraternity of Associations Santo Toms de Aquino (FASTA) Gascón 3145Mar del Plata 7600Argentina

Four sites were selected in a salt marsh in the Bahia Blanca Estuary （Argentina）：（1） low marsh （flooded by the tide twice daily） vegetated by S. alterniflora; （2） non-vegetated low marsh; （3） high marsh （flooded only in spring tides） vegetated by S. alterniflora; （4） non-vegetated high marsh. The pH and Eh were measured in sediments, while dissolved nutrients （ammonium, nitrate, nitrite and phosphate） and particulate organic matter （POM） were determined in pore water, pH （6.2-8.7） was only affected by vegetation in low areas. Eh （from -300 to 250 mV） was lower at low sites than at high ones; in the latter, the values were higher in the non-vegetated sediments. The POM concentration was greater in the high marsh than in the low marsh, with no effect of vegetation. Ammonium was the most abundant nitrogen nutrient species in pore water, except in the non-vegetated high marsh where nitrate concentration was higher. All nitrogen nutrients were affected by both flooding and vegetation. Phosphate was always present in pore water at all sites throughout the year and its concentration varied within narrow limits, with no effect of flooding and greater values always at non-vegetated sites. Our results showed that the variability of the pore water composition within the marsh is greater than the temporal variation, meaning that both tidal flooding and vegetation are important in the dynamics of nutrients and organic matter in the sediment pore water.

关键词： organic matter nutrients flooding Spartina alterniflora

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Arylamine N-acetyltransferase 2 genotype-dependent N-acetylation of isoniazid in cryopreserved human hepatocytes

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Acta Pharmaceutica Sinica B 2017年第4期7卷 517-522页

作者： Mark A.Doll raúl A.Salazar-González Srineil Bodduluri David W.Hein Department of Pharmacology and Toxicology and James Graham Brown cancer Center University of LouisvilleLouisvilleKY 40202USA

Cryopreserved human hepatocytes were used to investigate the role of arylamine N-acetyltransferase 2 (NAT2; EC 2.***.1.5) polymorphism on the N-acetylation of isoniazid (INH). NAT2 genotype was determined by Taqman allelic discrimination assay and INH N-acetylation was measured by high performance liquid chromatography. INH N-acetylation rates in vitro exhibited a robust and highly significant (Plism. N-acetylation rates in situ were INH concentration- and time-dependent. Following incubation for 24 h with 12.5 or 100 µmol/l INH, acetyl-INH concentrations varied significantly (P = 0.0023 and P = 0.0002) across cryopreserved human hepatocytes samples from rapid, intermediate, and slow acetylators, respectively. The clear association between NAT2 genotype and phenotype supports use of NAT2 genotype to guide INH dosing strategies in the treatment and prevention of tuberculosis.

关键词： Isoniazid N-Acetyltransferase 2 Acetylation polymorphism Human hepatocytes Genotype Phenotype

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Glutamine metabolism in cancer therapy

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cancer Drug Resistance 2018年第3期1卷 126-138页

作者： Tra-ly Nguyen raúl V.Durán Institut Européen de Chimie et Biologie INSERM U1218Universitéde Bordeaux2 Rue Robert Escarpit33607 PessacFrance.

The amino acid glutamine plays a key role in the metabolism of highly proliferating *** malignant transformation,cancer cells modify the consumption and processing of glutamine to sustain cell growth and *** some cases,these cancer cells become addicted to ***,targeting the metabolism of glutamine has been developed during last years as a potential strategy against *** this review,we summarized the last advances in our knowledge about the role of glutamine metabolism in cancer therapy.

关键词： cancer glutamine glutamoptosis metabolism mammalian target of rapamycin

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liver dysfunction and SARS-CoV-2 infection

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World Journal of Gastroenterology 2021年第26期27卷 3951-3970页

作者： Abraham Edgar Gracia-ramos Joel Omar Jaquez-Quintana raúl contrera.-Omaña Moises Auron Department of Internal Medicine General HospitalNational Medical Center"La Raza"Instituto Mexicano del Seguro SocialMexico City 02990Mexico Gastroenterology Service and Department of Internal Medicine Faculty of MedicineUniversity Hospital"Dr.JoséE.González"Universidad Autónoma de Nuevo LeónMonterrey 64460Mexico Centro de Estudio e Investigación en Enfermedades Hepáticas y Toxicológicas(CEIHET) Pachuca 42184Mexico Departments of Hospital Medicine and Pediatric Hospital Medicine Cleveland ClinicClevelandOH 44195United States

Severe acute respiratory syndrome coronavirus 2 infection is the cause of coronavirus disease 2019(COVID-19),which predominantly affects the respiratory system;it also causes systemic and multi-organic *** damage is among the main extrapulmonary ***-19-associated liver injury is defined as any liver damage occurring during the disease course and treatment of COVID-19 in patients with or without pre-existing liver disease,and occurs in approximately one in five *** liver test results have been associated with a more severe course of COVID-19 and other complications,including *** linking COVID-19 to liver injury are *** consideration should be made for patients with pre-existing liver disease,such as metabolic dysfunction-associated fatty liver disease,chronic liver disease due to viral or autoimmune disease,liver transplant carriers,or cirrhosis,given the risk for more severe *** manuscript summarizes the current lines of evidence on COVID-19-associated liver injury regarding pathophysiology,clinical significance,and management in both patients with or without preexisting liver disease,to facilitate clinicians’access to updated information and patient ***,we mention the ideas and recommendations to be considered for future research.

关键词： SARS-CoV-2 Coronavirus COVID-19 liver liver diseases liver failure liver injury Cirrhosis

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Emphysematous Cystitis: Report of Two cases and Review of the literature

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Health 2024年第4期16卷 309-318页

作者： Roland Bertile Banga-Mouss Nestor Ghislain Andzouana Mbamognoua Yanick Dimi Nyanga Armel Melvin Atipo Ondongo Steve Aristid Ondziel-Opara raïssa laure Mayanda Ohouanda Nick Arnaud Monabeka Evariste Bouenizabila Anani Séverin Wences Odzébé Prosper Alain Bouya Urology Department University Hospital of Brazzaville Brazzaville Republic of the Congo Faculty of Health Sciences Marien Ngouabi University Brazzaville Republic of the Congo Department of Metabolic and Endocrine Diseases University Hospital of Brazzaville Brazzaville Republic of the Congo

Emphysematous cystitis is a rare complication of lower urinary tract infection whose prognosis is conditioned by the delay in treatment. The predisposition of diabetic patients to urinary infections caused by gas-producing bacteria is considered one of the most common factors in the occurrence of emphysematous cystitis. The currently recommended diagnostic test is CT scanning, which has definite value in assessing gas accumulation in the bladder wall and lumen. The authors report the observations of two patients aged 68 and 80 who were treated for emphysematous cystitis complicating diabetes mellitus. The evolution was favorable under treatment with antibiotic therapy, insulin therapy and bladder drainage.

关键词： Emphysematous Cystitis Computed Tomography lower Urinary Tract Infection Diabetes Mellitus

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Frozen ground and periglacial processes relationship in temperate high mountains: a case study at Monte Perdido-Tucarroya area(The Pyrenees, Spain)

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Journal of Mountain Science 2020年第5期17卷 1013-1031页

作者： SERraNO Enrique lóPEZ-MORENO Juan Ignacio GóMEZ-lENDE Manuel PISABARRO Alfonso MARTíN-MORENO raúl RICO Ibai AlONSO-GONZálEZ Esteban Dept of GeographyUniversity of ValladolidValladolid 47011Spain Dept of Geoenvironmental Processes and Global ChangePyrenean Institute of EcologyZaragoza 50.080Spain Dept.Specific Didactics.Autonom University of Madrid.Madrid 28049Spain Dept of GeographyPrehistory and ArcheologyUniversity of the Basque CountryVitoria 01006Spain

Seasonally frozen ground,mountain permafrost and cryogenic geomorphological processes are important components of the Pyrenean high *** work presents the results of a study on the distribution of frozen ground in a marginal and paraglacial environment of temperate *** inventory was made of landforms and indicators of frozen ground,and frozen ground was mapped *** 2014 and 2016 ground temperatures and thermal regimes were monitored,basal temperatures of snow-cover(BTS)were measured and a thermal map was *** thermal behaviours were detected among different elevations and slope *** processes are the most widespread,in which frost weathering and nivation,together with gelifluction and cryoturbation,are the most efficient processes;the latter two are generally linked to the presence of frozen *** fall in air and ground temperatures with altitude,slope orientations,and snowpack thickness and evolution determine ground thermal *** the study area,three types of thermal regimes were established:climate-controlled,snowcover-controlled,and frozen *** frozen ground occurs across a broad range of elevation between 2650 and 3075 m asl,whereas possible permafrost only occurs above 2750 m asl.

关键词： Geomorphology Periglacial Seasonally frozen ground Mountain permafrost Pyrenees

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AASlD practice guidance on drug,herbal,and dietary supplement-induced liver injury:also useful for hepatobiliary surgeons

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Hepatobiliary Surgery and Nutrition 2023年第5期12卷 746-751页

作者： Jose María Pinazo-Bandera Miren García-Cortés raúl J.Andrade Service of Gastroenterology and Hepatology University Hospital Virgen de la VictoriaInstituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BionandUniversidad de MálagaMálagaSpain Centro de Investigación Biomédico en Red Enfermedades Hepáticas y Digestivas(CIBERehd) MadridSpain

Drug-induced liver injury(DIlI)is a term used to describe an unexpected liver reaction to drugs,but also to herbal products and dietary supplements(HDS).In the current therapeutic armamentarium,only a small number of available drugs are still capable of causing liver damage in *** include,in addition to paracetamol-the prototypical example of this group-niacin(now rarely used to treat hypercholesterolaemia),intravenous methotrexate and probably ketamine(an intravenous hypnotic used in critically ill patients for rapid sequence induction)(1).

关键词： Drug-induced liver injury(DIlI) hepatotoxicity causality assessment Revised Electronic causality Assessment Method(REcaM)

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Assessment of drug-induced hepatotoxicity in clinical practice: A challenge for gastroenterologists

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World Journal of Gastroenterology 2007年第3期13卷 329-340页

作者： raúl J Andrade Mercedes Robles Alejandra Fernández-castaer Susana lópez-Ortega M carmen lópez-Vega M Isabel lucena liver Unit Gastroenterology Service "Virgen de la Victoria" University Hospital and School of Medicine Mlaga Spain Clinical Pharmacology Service "Virgen de la Victoria" University Hospital and School of Medicine Mlaga Spain

Currently, pharmaceutical preparations are serious contributors to liver disease; hepatotoxicity ranking as the most frequent cause for acute liver failure and post-commercialization regulatory decisions. The diagnosis of hepatotoxicity remains a difficult task because of the lack of reliable markers for use in general clinical practice. To incriminate any given drug in an episode of liver dysfunction is a step-by-step process that requires a high degree of suspicion, compatible chronology, awareness of the drug’s hepatotoxic potential, the exclusion of alternative causes of liver damage and the ability to detect the presence of subtle data that favors a toxic etiology. This process is time-consuming and the final result is frequently inaccurate. Diagnostic algorithms may add consistency to the diagnostic process by translating the suspicion into a quantitative score. Such scales are useful since they provide a framework that emphasizes the features that merit attention in cases of suspected hepatic adverse reaction as well. Current efforts in collecting bona fide cases of drug-induced hepatotoxicity will make refinements of existing scales feasible. It is now relatively easy to accommodate relevant data within the scoring system and to delete low-impact items. Efforts should also be directed toward the development of an abridged instrument for use in evaluating suspected drug-induced hepatotoxicity at the very beginning of the diagnosis and treatment process when clinical decisions need to be made. The instrument chosen would enable a confident diagnosis to be made on admission of the patient and treatment to be fine-tuned as further information is collected.

关键词： Drug-induced hepatotoxicity causality assessment Diagnostic algorithms Clinical scales

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Immune challenge of mating effort:steroid hormone profile,dark ventral patch and parasite burden in relation to intrasexual competition in male Iberian red deer

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Integrative Zoology 2020年第4期15卷 262-275页

作者： Eva DE lA PEÑA JoséMARTÍN Isabel BARJA raúl PÉREZ-caBAllERO Isabel ACOSTA Juan caRraNZA Wildlife Research Unit University of CórdobaCórdobaSpain Department of Evolutionary Ecology National Museum of Natural Sciences(Spanish Research CouncilCSIC)MadridSpain Department of Biology Zoology UnitAutonomous University of MadridMadridSpain Biodiversity and Global Change Research Centre Autonomous University of MadridMadridSpain Parasitology and Parasitic Diseases Unit Animal Health DepartmentUniversity of CórdobaCórdobaSpain laboratory of Malaria Immunology and Vaccinology National Institute of Allergy and Infectious DiseasesNational Institutes of HealthBethesdaMarylandUSA

Testosterone secretion may regulate the reproductive effort and the development of sexual traits,but it may also involve costs at the immunological and metabolic ***,the evidence for this trade-off in wild populations is *** also plays an important role in mediating the reproductive and immune *** this study,we analyzed whether the endoparasite burden relates to hormonal levels(fecal testosterone and cortisol metabolites)and/or morphological sexual traits(size of the dark ventral patch,a trait that indicates reproductive effort in males)in male Iberian red *** this purpose,we sampled male red deer harvested during hunting actions in 2 types of populations in south western Spain that differed in structure,affecting the level of male–male competition for *** used coprological analyses to estimate the parasite burden mainly of gastrointestinal and bronchopulmonary nematodes and of protozoa,and assessed testosterone and cortisol metabolite levels from fecal *** found a positive relationship of host parasitation with both testosterone levels and the size of the dark ventral patch,but these relationships depended on the intensity of male–male competition in the population,being only found under the high-competition *** results are discussed under the hypothesis of the testosterone immunocompetence handicap,suggesting a cost at the immunological level,and,therefore,higher susceptibility to parasite infection in males that make a greater reproductive ***,this effect seems to be modulated by the social environment(male–male competition)that might lead to different optima in testosterone production and sexual trait development.

关键词： dark ventral patch fecal testosterone metabolites intrasexual competition male Iberian red deer parasite burden

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