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Hydr.char and synthetic natural gas co-production for a full circular economy implementation via hydrothermal carbonization and methanation:An economic approach

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Journal of Environmental Sciences 2024年第6期140卷 69-78页

作者： Judith g.nzález-Arias guillermo Torres-Sempere Miriam g.nzález-castaño Francisco MBaena-Moreno Tomás rreina Inorganic chemistry Department and Materials Sciences Institute University of Seville-CSICSevilleSpain Materials Sciences Institute(IcMSE) CSIC-University of SevilleSevilleSpain Department of chemistry and chemical Engineering Chalmers University of TechnologyGothenburgSE 41296Sweden

Herein we study the economic performance of hydr.char and synthetic natural gas coproduction from olive tree *** pr.cess entails a combination of hydrothermal carbonization and *** a previous work,we evidenced that standalone hydr.char production via HTc results ***,we propose a step forward on the pr.cess design by implementing a methanation,adding value to the gas effluent in an attempt to boost the overall pr.cess techno-economic *** different plant capacities were analyzed(312.5,625 and 1250 kg/hr).The baseline scenarios showed that,under the current circumstances,our.circular economy strategy in *** analysis of the revenues shows that hydr.char selling pr.ce have a high impact on nPV and subsidies for renewable coal production could help to boost the profitability of the *** the contrary,the analysis for natural gas pr.ces reveals that pr.ces 8 times higher than the current ones in Spain must be achieved to reach *** seems unlikely even under the presence of a strong subsidy *** costs analysis suggests that a remarkable electr.city cost reduction or electr.city consumption of the HTc stage could be a potential strategy to reach profitability ***,significant reduction of green hydrogen production costs is deemed instrumental to improve the economic performance of the *** results show the formidable techno-economic challenge that our society faces in the path towards circular economy societies.

关键词： Hydrothermal carbonization co_(2)waste valorization Methanation Profitability analysis

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Enhancement of the co_(2)adsorption and hydrogenation to cH_(4)capacity of ru–na–ca/γ–Al_(2)o_(3)dual function material by controlling the ru calcination atmosphere

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Journal of Environmental Sciences 2024年第6期140卷 292-305页

作者： Alejandro Bermejo-López Beñat Pereda-Ayo Jon A.onrubia-calvo JoséA.g.nzález-Marcos Juan r.g.nzález-Velasco Department of chemical Engineering Faculty of Science and TechnologyUniversidad del País Vasco UPV/EHUBarrio Sarrienas/n48940 LeioaBizkaiaSpain

Integrated co_(2)capture and utilization(IccU)technology requires dual functional materials(DFMs)to carry out the pr.cess in a single reaction *** influence of the calcination atmosphere on efficiency of 4%ru-8%na_(2)co_(3)-8%cao/γ-Al_(2)o_(3)DFM is *** adsorbent pr.cursors are first co-impregnated onto alumina and calcined in ***,ru pr.cursor is impregnated and four aliquotes are subjected to different calcination protocols:static air in muffle or under different mixtures(10%H_(2)/n_(2),50%H_(2)/n_(2)and n_(2))*** are char.cterized by XrD,n_(2)adsorption-desorption,H_(2)chemisorption,TEM,XPS,H_(2)-TPD,H_(2)-TPr.co_(2)-TPD and *** catalytic behavior is evaluated,in cycles of co_(2)adsorption and hydrogenation to cH_(4),and temporal evolution of reactants and products concentrations is *** calcination atmosphere influences the physicochemical properties and,ultimately,activity of *** data and catalytic performance discover the acccomodation of ru nanoparticles disposition and basic sites is mostly influencing the catalytic *** calcined under n_(2)flow(runaca-n_(2))shows the highest cH_(4)production(449μmol/g at 370℃),because a well-controlled decomposition of pr.cursors which favors the better accomodation of adsorbent and ru phases,maximizing the specific surface area,the ru-basic sites interface and the participation of different basic sites in the co_(2)methanation ***,the calcination in a n_(2)flow is revealed as the optimal calcination protocol to achieve highly efficient DFM for integrated co_(2)adsorption and hydrogenation applications.

关键词： co_(2)methanation Integrated co_(2)capture and utilization(IccU) Dual functional material(DFM) ru calcination atmosphere

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High co_(2)permeation using a new ce_(0.85)gd_(0.15)o_(2-δ)-Lanio_(3)composite ceramic–carbonate dual-phase membrane

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Journal of Environmental Sciences 2024年第6期140卷 219-229页

作者： Daniela g.nzález-Varela JFrancisco gómez-garcía gustavo Tavizon Heriberto Pfeiffer Instituto de Investigaciones en Materiales Universidad Nacional Autónoma de MéxicoCd.UniversitariaDel.CoyoacánCP 04510Ciudad de MéxicoMéxico Departamento de Física y Química Teór.ca Facultad de QuímicaUniversidad Nacional Autónoma de MéxicoCd.UniversitariaDel.CoyoacánCP 04510Ciudad de MéxicoMéxico 不详

This work shows the synthesis,char.cterization and evaluation of dense-ceramic membranes made of ce_(0.85)gd_(0.15)o_(2-δ)-Lanio_(3)(cg-Ln)composites,where the fluorite-perovskite ratio(cg:Ln)was varied as follows:75:25,80:20 and 85:15 wt.%.Supports were initially char.cterized by XrD,SEM and electr.cal conductivity(using vacuum and oxygen atmospheres),to determine the composition,microstr.ctural and ionic-electronic conductivity ***,supports were infiltrated with an eutectic carbonates mixture,producing the corresponding dense dual-phase membranes,in which co_(2)permeation tests were ***,co_(2)permeation experiments were performed from 900 to 700℃,in the presence and absence of oxygen(flowed in the sweep membrane side).results showed that these composites possess high co_(2)permeation properties,where the o_(2)addition significantly improves the ionic conduction on the sweep membrane ***,the gc80-Ln20 composition presented the best results due to the following physicochemical char.cteristics:high electronic and ionic conductivity,appropriate porosity,interconnected porous channels,as well as thermal and chemical stabilities between the composite support and carbonate phases.

关键词： co_(2)permeation Doped ceo_(2) Lanio_(3) Impedance ceramic carbonate membrane

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Polyelectrolyte complexes between Hyperbranched and Linear Polysaccharides: Fucoidan/chitosan

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chinese Journal of Polymer Science 2024年第4期42卷 468-479页

作者： Ekaterina r.gasilova Daria n.Poshina Aleksandra o.Sitnikova natalia n.Saprykina Yury A.Skorik Institute of Macromolecular.compounds of the russian Academy of Sciences Bolshoi VO 31St.Petersburg199004Russian Federation

Polyelectrolyte complexes(PEcs)of hyperbranched(HB)and linear polysaccharides are promising as more effective encapsulation agents compared to PEcs formed by linear *** investigated the PEcs between the HB anionic polysaccharide fucoidan(FUc)and the cationic linear polysaccharide chitosan(cS).The FUc had a molecular weight(MW)of 30×*** PEcs were prepared in three solvents(water,0.01 and 0.1 mol/L acetic acid)with cS of MW of 15,110 and 170 kDa,and deacetylation degrees(DDA)of 70%and 97%.The str.ctures of the PEcs and the initial FUc were investigated by multi-angle static and dynamic light *** the FUc contained 18 wt%of—oSo3 groups and 5 wt%of uronic acid units,it was a“strong-weak”copolyanion,so the HB macromolecules of the FUc formed nanogel particles in 0.1 mol/L AcoH and open branched str.ctures in water,as confirmed by the Kratky *** mixing the solutions of original components,the PEc str.ctures underwent an equilibration period,the duration of which increased with the MW of *** the charge stoichiometry was approached,the PEcs shrank;the fr.ctal dimension approached unity,indicating the side-by-side packing of adjacent FUc branches with the help of *** aggregation in the vicinity of the charge compensation was hardly observed,as it occurred in a very narrow *** PEc content at theζ-potential inversion depended on solvents’pH and the DDA of *** the extreme case of core-shell PEcs in 0.1 mol/L AcoH,obtained by mixing FUc nanogels with the solutions of high MW cS of 97%DDA,the protruding tails of cS formed a positively charged shell in the whole range of FUc content(10 wt%ccanning electron microscopy and atomic force microscopy images of dried samples were discussed in relation to the light scattering results.

关键词： Polyelectrolyte complexes chitosan Hyperbranched fucoidan Light scattering

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Estimation of Equivalent Model of Photovoltaic Array Using Unscented Kalman Filters

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Journal of Modern Power Systems and clean Energy 2024年第3期12卷 819-827页

作者： M.A.g.nzález-cagigal JoséA.rosendo-Macías A.gómez-Expósito the Department of Electr.cal Engineering University of SevilleSpainand A.Gómez-Expósito is also with ENGREEN Laboratory of Engineering for Energy and Environmental SustainabilitySevilleSpain

This paper proposes the use of the unscented Kalman filter to estimate the equivalent model of a photovoltaic(PV)array,using external measurements of current and voltage at the inverter *** estimated model is of interest to predict the power output of PV plants,in both planning and operation scenarios,and thus improves the efficient operation of power systems with high penetration of renewable *** proposed technique has been assessed in several simulated scenarios under different operating *** results show that accurate estimates are provided for the model parameters,even in the presence of measurement noise and abrupt variations under the external conditions.

关键词： Equivalent model parameter estimation photovoltaic energy unscented Kalman filter

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Impact of payment source, referral site, and place of residence on outcomes after allogeneic transplantation in Mexico

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World Journal of Transplantation 2024年第2期14卷 76-87页

作者： Andrés gómez-De león Yesica A López-Mora Valeria garcía-Zárate Ana Varela-constantino Sergio U Villegas-De leon Xitlaly J g.nzález-leal raúl del Toro-Mijares Anna c rodríguez-Zúñiga Juan F Barrios-ruiz Victor Mingura-ledezma Perla r.colunga-Pedraza olga g cantú-rodríguez césar H gutiérrez-Aguirre Luz Tarín-Arzaga Elías E g.nzález-López David gómez-Almaguer Hematology Service Universidad Autónoma de Nuevo LeónFacultad de Medicina y Hospital Universitario Dr.JoséEleuterio GonzálezMonterrey 64460Nuevo LeónMexico Hemato-logy Service Clínica Gómez AlmaguerMonterrey 64710Nuevo LeónMexico Hematology Service Instituto Tecnológico de Estudios Superiores de MonterreyTec SaludEscuela de Medicina Ignacio SantosMonterrey 64710Nuevo LeónMexico

BAcKgroUnD The impact of social determinants of health in allogeneic transplant r.cipients in low-and middle-income countries is poorly *** observational study analyzes the impact of place of residence,referring institution,and transplant cost coverage(out-of-pocket vs government-funded vs private insurance)on outcomes after allogeneic hematopoietic stem cell transplantation(alloHScT)in two of Mexico's largest public and private *** To evaluate the impact of social determinants of health and their relationship with outcomes among allogeneic transplant r.cipients in *** In this retrospective cohort study,we included adolescents and adults≥16 years who r.ceived a matched sibling or haploidentical transplant from *** were selected without regard to their diagnosis and were sourced from both a private clinic and a public University Hospital in *** payment groups were compared:out-of-pocket(ooP),private insurance,and a federal Universal healthcare program“Seguro Popular”.outcomes were compared between referred and institution-diagnosed patients,and between residents of nuevo leon and *** outcomes included overall survival(oS),categorized by residence,referral,and payment *** outcomes encompassed early mortality,event-free-survival,graft-versus-host-relapse-free survival,and non-relapse-mortality(nrM).Statistical analyses employed appropriate tests,Kaplan-Meier method,and cox proportional hazard regression *** software included SPSS and r with tidycmprsk *** our primary outcome was overall *** included 287 patients,n=164 who lived out of state(57.1%),and n=129 referred from another institution(44.9%).The most frequent payment source was ooP(n=139,48.4%),followed by private insurance(n=75,26.1%)and universal coverage(n=73,25.4%).no differences in oS,event-free-survival,nrM,or graft-versus-host-relapse-free survival were observed for patients dia

关键词： Hematopoietic cell transplant Social determinants of health geography Haploidentical out-of-pocket Financial toxicity Survival Health services and outcomes Hematopoietic malignancy Aplastic anemia

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Str.ctural changes in the obese brain

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neural regeneration research 2024年第12期19卷 2561-2562页

作者： Anna r.r.Da conceicao Marcelo n.n.Vieira Fernanda g.De Felice D’or Institute for research and Education Rio de JaneiroBrazil Institute of Medical Biochemistry leopoldo De Meis Federal University of Rio de JaneiroRio de JaneiroBrazil centre for neuroscience Studies Department of Biomedical and Molecular Sciences&Department of PsychiatryQueen’s UniversityKingstonONCanada

obesity represents a major global health concern,with widespread growing prevalence and severe consequences for the quality of life and life expectancy of affected individuals and for the economic burden of healthcare systems(Prospective Studies collaboration,2009).obesity is a well-established risk factor for a variety of conditions including metabolic,vascula r,and heart diseases,and seve ral types of cancer(Prospective Studies collaboration,2009).

关键词： diseases consequences prevalence

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Microsurgical management of radicular.cyst using guided tissue regeneration technique:A case report

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World Journal of clinical cases 2024年第7期12卷 1346-1355页

作者： Juan carlos gómez Mireles Eugenia Karina Martínez carrillo Katia Alcalá Barbosa Evangelina gutiérrez cortés Javier g.nzález ramos Luis Antonio g.nzález gómez rubén Alberto Bayardo g.nzález Sarah Monserrat Lomelí Martínez Periodontics Specialty Department of Integral Dentistry ClinicsCentro Universitario de Ciencias de la SaludUniversidad de GuadalajaraGuadalajara 44340Mexico Endodontics Specialty Department of Integral Dentistry ClinicsCentro Universitario de Ciencias de la SaludUniversidad de GuadalajaraGuadalajara 44340Mexico Endodontics Specialty Department of ClinicsCentro Universitario de Los AltosUniversidad de GuadalajaraTepatitlán de Morelos 47620Mexico Specialty in oral Pathology Surgical-Stomatological DepartmentAutonomous University of GuadalajaraZapopan 45129Mexico Independent researcher Guadalajara 44340Mexico Department of Integral Dentistry clinics Centro Universitario de Ciencias de la SaludUniversidad de GuadalajaraGuadalajara 44340Mexico Department of Medical and Life Sciences Centro Universitario de la CiénegaUniversidad de GuadalajaraOcotlán 47810Mexico Master of Public Health Department of Well-being and Sustainable DevelopmentCentro Universitario del NorteUniversidad de GuadalajaraColotlán 46200Mexico

BAcKgroUnD radicular.cyst is a lesion of odontogenic origin that arises from epithelial remains due to periapical periodontitis caused by inflammatory reactions generated at the apex of affected teeth with infected or necrotic *** therapeutic mana gement of radicular.cysts is *** is only one case report of enucleation of a radicular.cyst managed with microsurgery and apicoectomy,but without the use of the guided tissue regeneration(gTr)technique in the same surgical *** present clinical case describes the management of a radicular.cyst with microsurgical approach,performance of an apicoectomy of the tooth associated with the entity,application of gTr technique,use of a resorbable membrane of type I bovine collagen,and bovine *** SUMMArY A 68-year-old patient presented with a radicular.cyst from an upper lateral *** microsurgical management used was aimed at enucleating the chemical membrane,performing apicoectomy of the tooth along with careful and pr.cise retrograde filling,and implementing gTr technique using a resorbable collagen membrane and bovine *** diagnosis of radicular.cyst was confirmed using histopathological *** patient underwent follow-up evaluations at 10 and 30 d *** 4 months postoperative evaluation,she remained asymptomatic,and radiographs showed significant periapical healing with adequate bone *** These results suggest that microsurgical management using the gTr technique with collagen membrane and xenograft,contributes to bone regeneration.

关键词： odontogenic cysts Apical periodontal cyst Dental root end cyst case report

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gut microbiota in preterm infants r.ceiving breast milk or mixed feeding

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World Journal of clinical Pediatr.cs 2024年第2期13卷 135-145页

作者： Sandra gabriela Sánchez-g.nzález Bárbara gabriela cárdenas-del-castillo Elvira garza-g.nzález gerardo r Padilla-rivas Isaías rodríguez-Balderrama consuelo Treviño-garza Fernando Félix Montes-Tapia gerardo c Palacios-Saucedo Anthony gutiérrez-rodríguez Manuel Enrique de-la-o-cavazos Department of Pediatr.cs Hospital Universitario“Dr.JoséEleuterio González”Universidad Autónoma de Nuevo LeónMonterrey 64460Nuevo LeónMéxico Departamento de Bioquímica y Medicina Molecular Universidad Autónoma de Nuevo LeónMonterrey 64460Nuevo LeónMéxico Department of Biochemistry and Molecular Medicine Universidad Autónoma de Nuevo LeónMonterrey 64460Nuevo LeónMéxico Department of Pediatr.c Surgery Hospital Universitario"Dr.JoséEleuterio González"Monterrey 64460Nuevo LeónMéxico

BAcKgroUnD Preterm birth is the leading cause of mortality in newborns,with very-low-birthweight infants usually experiencing several *** milk is considered the gold standard of nutrition,especially for preterm infants with delayed gut colonization,because it contains beneficial microorganisms,such as Lactobacilli and *** To analyze the gut microbiota of breastfed preterm infants with a birth weight of 1500 g or *** An observational study was performed on preterm infants with up to 36.6 wk of gestation and a birth weight of 1500 g or less,born at the University Hospital ***éEleuterio g.nzález at Monterrey,Mexico.A total of 40 preterm neonates were classified into breast milk feeding(BM)and mixed feeding(MF)groups(21 in the BM group and 19 in the MF group),from october 2017 to June *** samples were collected before they were introduced to any feeding *** full enteral feeding was achieved,the composition of the gut microbiota was analyzed using 16S rrnA gene *** variables were compared using Student’s t-test or using the Mann–Whitney U test for nonparametr.c ***,evenness,equitability,Margalef’s index,Fisher’s alpha,chao-1 index,and Shannon’s diversity index were also *** no significant differences were observed at the genus level between the *** comparison indicated higher.counts of Alphaproteobacteria and Betaproteobacteria in the initial compared to the final sample of the BM group(Pn addition,higher.counts of gammaproteobacteria were detected in the final than in the initial sample(P=0.040).According to the Margalef index,Fisher’s alpha,and chao-1 index,a decrease in species r.chness from the initial to the final sample,regardless of the feeding type,was observed(Pour predominant phyla were Bacteroidetes,Actinobacteria,Firmicutes,and Proteobacteria,with Proteobacteria being the most ***,no significant differences were

关键词： gut microbiota Human milk Preterm infant Proteobacteria Very low birth weight 16S rrnA

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Long-term monitoring reveals the effect of pr.cipitation and silviculture on nothofagus regeneration in northern Patagonia mixed forests

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Ecological Pr.cesses 2024年第02期13卷 103-117页

作者： georgina Sola camila Mateo Alejandro Dezzotti Paula Marchelli Hernán Attis Beltrán renato Sbrancia Luis chauchard Marcelo g.nzález Pe?alba Martín Lara Verónica El Mujtar consejo nacional de Investigaciones científicas y Técnicas (conIcET ) Asentamiento Universitario San Martín de los Andes (AUSMA-Unco) Instituto de Investigaciones Forestales y Agropecuarias Bariloche (IFAB) Instituto Nacional de Tecnología Agropecuaria (INTA) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET ) Departamento de conservación y Manejo Parque Nacional Lanín- Administración de Parques Nacionales (PNL-APN)

Background Tree regeneration is a key component of resilience because it promotes post-disturbance r.covery of forests. northwestern Patagonia from Argentina is occupied by nothofagus alpina（na）, n. obliqua（no）, and n. dombeyi（nd） forests that grow along an intense pr.cipitation gradient, managed throughout shelterwood silvicultural system by technicians of the Lanin natural reserve. The objective of this study was to evaluate the influence of seeding cuttings over the dynamics of nothofagus mixed forests across landscape（pr.cipitation gradient） based mainly on the composition and abundance of tree regeneration, permanent sampling plots and generalized linear mixed models. In particular, we analysed:（i） the str.cture of sexual and asexual regeneration during nd > 20 years after harvest（the dynamics of managed forests）, and（ii） the str.cture of sexual regeneration in primary and managed forests after > 20 years of harvest（the effect of silviculture）.results nd was the most abundant species in the regeneration of managed forests during all periods in both sites despite its lower.contribution to the adult cohort. During the 10–20 years period after harvest, the humid site exhibited higher regeneration density than the mesic site(120,000 and 6000 ind ha-1, respectively), and it decreased afterwards. The number of established regeneration（> 2 m height） was lower for na in the mesic site and for no in the humid site(0 and 57 ind ha-1, respectively). However, in comparison to no, na showed a higher number of sprouted stumps and sprouts per stump, and a higher sprout height in the mesic site. no exhibited higher sprout mortality in the humid site. Finally, the regeneration of primary forests showed lower density and height, and a more balanced composition than that of managed *** The silvicultural effects on the mixed forest regeneration dynamics was strongly influenced by the condition of sites. Therefore, management prescriptions should be adj

关键词： nothofagus alpina nothofagus obliqua nothofagus dombeyi Basal sprouting Shelterwood silvicultural system Ecological resilience

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