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Journal of Thermal Science 2014年第6期23卷 564-571页

作者： E.Gómez-Arias J.Ibarra-Bahena L.Velazquez-Avelar R.J.Romero A.Rodriguez-Martinez M.Montiel-González Centro de investigación en Ingeniería y ciencias Aplicadas Universidad Autónoma del Estado de MorelosAv.Universidad 1001Col.ChamilpaCuernavacaMorelosCP 62209MéXICO Facultad de ciencias Químicas e Ingeniería Universidad Autónoma del Estado de MorelosAv.Universidad 1001Col.ChamilpaCuernavacaMorelosCP 62209MéXICO Posgrado en Ingeniería y ciencias Aplicadas Universidad Autónoma del Estado de MorelosAv.Universidad 1001Col.ChamilpaCuernavacaMorelosCP 62209MéXICO

The generator is the starter device of single stage heat transformer(SSHT) and its characteristics have main effects on the overall efficiency of this kind of absorption *** article reports a study of the generation of steam and changes in the concentration of the working solution(Water/Carrol mixture) into a plate heat exchanger as a function of its horizontal and vertical position by gravity *** is considered the analysis of six experimental tests;two were evaluated in a plate heat exchanger in a horizontal position and four in a vertical position(90 degree inclination).The generation of steam and increased concentration of the working solution are more sensitive to the vertical position of exchanger than in horizontal *** results of numerical-experimental analysis indicates that a heat exchanger in horizontal position,the steam generation and the change in the concentration of the working solution occurring in the middle of the plate(or at greater distance depending to the thermodynamic conditions) and instantly in vertical position(at the input of the plate).

关键词： Single stage heat transformer Plate heat exchanger numerical modeling Temperature and concentration field Water/Carrol mixture

Variation in abundance and habitat relationship of three understory insectivorous birds in a disturbed landscape of neotropical dry forest of Colombia

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Avian Research 2020年第3期11卷 265-276页

作者： Camilo Loaiza Olga LMontenegro David King Manuel Spínola Lilibeth Arinda Palacio Agustín Rudas instituto de ciencias naturales Universidad Nacional de ColombiaBogotáColombia northern Research Station USDA Forest ServiceUniversity of Massachusetts204 Holdsworth HallAmherstMA 01003USA instituto Internacional en Conservación y Manejo de Vida Silvestre Universidad NacionalApartado1350-3000 HerediaCosta Rica.

Background:Evaluating relationships between avian populations and their habitat is important for understanding the biology of these species and for management decisions that improve the effectiveness of restoration *** investigated how habitat variation along a disturbance gradient affected the abundance of three insectivorous bird species,White-bellied Antbird(Myrmeciza longipes),Barred Antshrike(Thamnophilus doliatus),and Pale-breasted Spinetail(Synallaxis albescens)in a neotropical dry forest remnant in central ***:The study area,which is located in Magdalena Valley,is under ecological restoration after the construction of the“El Quimbo”hydroelectric dam,with a gradient of habitat conditions,from relatively advanced secondary growth to recently disturbed *** conducted bird surveys and quantified the habitat conditions from June 2018 to June *** compared the relative abundance of the birds among the three zones with increasing disturbance and modeled the relationship between the bird abundance with the micro-and landscape-habitat conditions,with Poisson generalized linear model ***:The relative abundance of the three bird species varied according to the habitat features and disturbance *** abundance of White-bellied Antbirds was higher in forests and thickets than shrubland fragments;Barred Antshrike was more abundant in shrubland and thickets than in forest fragments,and Pale-breasted Spinetail had the highest abundance in shrubland and the lowest in forest *** abundance of both White-bellied Antbird and Pale-breasted Spinetail did not differ among zones with different levels of disturbance,while the abundance of Barred Antshrike decreased in zones with more ***:There were significant differences in the habitat relationships of the three understory insectivorous species along the disturbance gradient,although these species were within the same trophic *** bird species prefer

关键词： Bird population ecology Generalized linear models Wildlife habitat restoration

Thermal decomposition of Diphenyl Tetroxane in Chlorobenzene Solution

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International Journal of Organic Chemistry 2019年第1期9卷 1-9页

作者： Alexander G. Bordon Andrea n. Pila Mariela I. Profeta María J. Jorge Lilian C. Jorge Jorge M. Romero nelly L. Jorge Laboratorio de investigación en tecnología Ambiental Facultad de Ciencias Exactas Naturales y Agrimensura de la Universidad Nacional del Nordeste Corrientes Argentina

The thermal decomposition of Cyclic Diperoxide of Benzaldehyde 3,6-diphenyl-1,2,4,5-tetroxane, (DFT) in chlorobenzene solution in the studied temperature range (130°C - 166°C) satisfactorily satisfies a first order law up to 60% conversions of diperoxide. DFT would decompose through a mechanism in stages and initiated by the homolytic breakdown of one of the peroxidic bonds of the molecule, with the formation of the corresponding intermediate biradical. The concentration studied was very low, so that the effects of secondary reactions of decomposition induced by free radicals originated in the reaction medium can be considered minimal or negligible. The activation parameters for the unimolecular thermal decomposition reaction of the DFT are ΔH# = 30.52 ± 0.3 kcal·mol-1 and ΔS# = -6.38 ± 0.6 cal·mol-1 K-1. The support for a step-by-step mechanism instead of a process concerted is made by comparison with the theoretically calculated activation energy for the thermal decomposition of 1,2,4,5-tetroxane.

关键词： DFT Thermal decomposition Chlorobenzene Mechanism

How inflammation influences psychiatric disease

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World Journal of Psychiatry 2024年第3期14卷 342-349页

作者： Eduardo Ferat-Osorio JoséLuis Maldonado-García Lenin Pavón División de investigación Clínica de la Coordinación de investigación en Salud Instituto Mexicano del Seguro SocialMexico City 06720Mexico departamento de Bioquímica Facultad de MedicinaUniversidad Nacional Autónoma de MéxicoCoyoacán 04510Ciudad de MéxicoMexico departamento de Inmunología Escuela Nacional de Ciencias BiológicasInstituto Politécnico NacionalMexico City 11340Mexico Laboratorio de Psicoinmunología Instituto Nacional de Psiquiatría Ramón de la Fuente MuñizMexico City 14370Mexico

Recent studies highlight the strong correlation between infectious diseases and the development of neuropsychiatric *** this editorial,we comment on the article“Anti-infective therapy durations predict psychological stress and laparoscopic surgery quality in pelvic abscess patients”by Zhang et al,published in the recent issue of the World Journal of Psychiatry 2023;13(11):*** discussion highlighted the potential consequences of anxiety,depression,and psychosis,which are all linked to bacterial,fungal,and viral infections,which are relevant to the impact of inflammation on the sequelae in mental health as those we are observing after the coronavirus disease 2019 *** focus specifically on the immune mechanisms triggered by inflammation,the primary contributor to psychiatric ***,pathophysiological mechanisms such as organ damage,post-injury inflammation,and infectioninduced endocrine alterations,including hypocortisolism or autoantibody formation,significantly contribute to the development of chronic low-grade inflammation,promoting the emergence or development of psychiatric alterations in susceptible *** inflammation can have long-term effects on patients,a multidisciplinary treatment plan can avoid complications and debilitating health issues,and it is crucial to recognize and address the mental health implications.

关键词： Inflammation infection depression Pelvic inflammatory disease Psychiatric complication

Ontogeny of rat chondrocyte proliferation:studies in embryo,adult and osteoarthritic (OA) cartilage

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Cell Research 2005年第2期15卷 99-104页

作者： Madaí A GóMEZ-CAMARILLO,Juan B.KOURI departamento de Patología Experimental Centro de investigación y de Estudios Avanzados. instituto Politécnico nacional(CInVESTAV-IPn) México.Centro de investigación en ciencias Biológicas Universidad Autónoma de Tlaxcala México. departamento de Patología Experimental Centro de investigación y de Estudios Avanzados. instituto Politécnico nacional(CInVESTAV-IPn) México

The aim of this work was to study the ontogeny of chondrocyte cell division using embryo, adult and osteoarthritic(OA) cartilage. We searched for mitosis phases and performed a comparative evaluation of mitotic index, basic fibro-blast growth factor b (FGFb), transforming growth factor β1 (TGF-β1) receptors, cyclin dependent kinase (CDK1)and Cyclin-B expression in fetal, neonate, 3, 5, 8 weeks old rats and experimental OA. Our results showed that mitosisphases were observed in all normal cartilage studied, although, we found a decrease in mitotic index in relation to tissuedevelopment. no mitosis was detected in OA cartilage. We also found a statistical significant reduction in cell number inOA cartilage, compared with the normal tissue. Furthermore, FGFb and TGF-β1 receptors diminished in relation totissue development, and were very scarce in experimental OA. Western blot assays showed CDK-1 expression in allcases, including human-OA cartilage. Similar results were observed for Cyclin-B, except for 8 weeks, when it was notexpressed. Our results suggest that cell division seems to be scarce, if not absent within the OA cartilage ***, the existence of factors essential for cell division leaves open the question concerning chondrocyteproliferation in OA cartilage, which is likely to be present in the early stages of the disease.

关键词： proliferation chondrocytes mitotic index growth factors.

Lower marine productivity increases agonistic interactions between sea lions and fur seals in northern Pacific Patagonia

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Current Zoology 2022年第6期68卷 657-666页

作者： Felipe MOnTALVA Hector PAVES Diego PEREZ-VenEGAS Karin G BARRIenTOS E Carola VALenCIA Diego MIRAnDA-URBInA Mauricio SEGUEL Facultad de ciencias Biologicas Pontificia Universidad Catolica de ChileSantiagoChile departamento de ciencias Basicas Facultad de CienciasUniversidad Santo TomasOsornoChile Centro de investigacion y Gestion de Recursos naturales(CIGRen) Instituto de BiologıaFacultad de CienciasUniversidad de ValparaısoValparaısoChile Programa de Doctorado en ciencias Agrarias Escuela de Graduados de laFacultad de Ciencias Agrarias y AlimentariasUniversidad Austral de ChileValdiviaChile Facultad de Medicina Veterinaria Sede PatagoniaUniversidad San SebastianPuerto MonttChile instituto de ciencias Biologicas Universidad de TalcaTalcaChile department of Pathobiology Ontario Veterinary CollegeUniversity of GuelphGuelphCanada

Interspecific interactions are key drivers of individual and population-level fitness in a wide range of ***,in marine ecosystems,it is relatively unknown which biotic and abiotic factors impact behavioral interactions between competing *** assessed the impact of weather,marine productivity,and population structure on the behavioral agonistic interactions between South American fur seals(SAFSs),Arctocephalus australis,and South American sea lions(SASLs),Otaria byronia,in a breeding colony of *** hypothesized that agonistic interactions between SAFSs and SASLs respond to biotic and abiotic factors such as SAFS population structure,marine productivity,and *** found that SASL and SAFS interactions almost always resulted in negative impacts on the social structure or reproductive success of the SAFS *** adult males initiated stampedes of SAFS and/or abducted and predated SAFS *** SAFS males abundance and severe weather events were negatively correlated with agonistic interactions between ***,proxies for lower marine productivity such as higher sea surface temperature and lower catches of demerso-pelagic fish were the most important predictors of more frequent agonistic interactions between SAFS and *** the current scenario of decline in marine biomass due to global climate change and overfishing,agonistic interactions between competing marine predators could increase and exacerbate the negative impacts of environmental change in these species.

关键词： interspecific interactions climate change Guafo Island sea surface temperature South American fur seal South American sea lion

Resource manipulation reveals flexible allocation rules to growth and reproduction in a Mediterranean evergreen oak

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Journal of Plant Ecology 2014年第1期7卷 77-85页

作者： Fernando Pulido Gerardo Moreno Eustolia García José J.Obrador Raúl Bonal Mario Díaz Grupo de investigación Forestal Ingeniería Forestal y del Medio NaturalUniversidad de ExtremaduraE-10600 PlasenciaCáceresSpain Colegio de Postgraduados Campus TabascoMX-86500 CárdenasTabascoMexico instituto de investigación en Recursos Cinegéticos (CSIC-UCLM-JCCM)University of Castilla-La ManchaCiudad RealSpain department of Biogeography and Global Change(BCG-MnCn) Museo Nacional de Ciencias NaturalesCSICE-28006 MadridSpain

Aims In plants,resource allocation to growth and reproduction may depart from trade-off expectations if(i)investment in growth and reproduction relies on different resource pools,(ii)allocation to reproduction is dependent upon reaching some growth threshold or(iii)reproduction is developmentally linked to growth,both functions relying on the same resource *** examined the effects of enhanced resource level on patterns of resource allocation to growth and reproduction in holm oak(Quercus ilex ***),a Mediterranean evergreen *** In the experimental year(2003),we manipulated the amount of soil nutrients in autumn(to increase nutrient uptake during shoot elongation in the following spring)and soil water in summer(to increase water uptake during acorn growth).Indicators of growth and male and female reproduction were estimated in the preexperimental(2002),experimental(2003)and post-experimental(2004)*** Findings Fertilized trees produced significantly longer shoots,but the number of female flowers per shoot was not affected by *** production of male catkins was also enhanced by *** did not affect the production of female flowers or abortion *** and female reproduction showed no consistent relationship in untreated trees,but resource addition elicited a growth-female reproduction trade-off in the experimental *** sign of this significant relationship changed in the post-experimental year,indicating the existence of lagged effects of resource manipulation on acorn ***,patterns of allocation to growth and reproduction varied as a function of sex,resource availability and year,a result consistent with extreme allocational plasticity in holm oak.

关键词： acorn abortion allocational plasticity dehesa growthreproduction trade-offs nutrient addition Quercus ilex resource allocation

Plant Growth-Promoting Traits in Rhizobacteria of Heavy Metal-Resistant Plants and Their Effects on Brassica nigra Seed Germination

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Pedosphere 2017年第3期27卷 511-526页

作者： Brenda ROMn-POnCE Diana Miryel REZA-VZQUEZ Sonia GUTIRREZ-PAREdeS María de Jesús de HARO-CRUZ Jessica MALDOnADO-HERnndeZ yanely BAHenA-OSORIO Paulina ESTRADA-de LOS SAnTOS en Tao WAnG María Soledad VSQUEZ-MURRIETA instituto Politécnico nacional Escuela Nacional de Ciencias Biológicas Prolongación Carpio y Plan de Ayala s/n Col.Santo Tomás Del.Miguel Hidalgo Ciudad de México

Phytoremediation is an emerging technology that uses plants and their associated microbes to clean up pollutants from the soil, water, and air. In order to select the plant growth-promoting rhizobacteria （PGPR） for phytoremediation of heavy metal contamination, 60 bacterial strains were isolated from the rhizosphere of two endemic plants, Prosopis laevigata and Spharealcea angustifolia, in a heavy metal-contaminated zone in Mexico. These rhizobacterial strains were characterized for the growth at different pH and salinity, extracellular enzyme production, solubilization of phosphate, heavy metal resistance, and plant growth-promoting （PGP） traits, including production of siderophores and indol-3-acetic acid （IAA）. Overall, the obtained rhizobacteria presented multiple PGP traits. These rhizoba^teria were also resistant to high levels of heavy metals （including As as a metalloid）（up to 480 mmol L-1 As（V）, 24 mmol L-1 Pb（II）, 21 mmol L-1 Cu（II）, and 4.5 mmol L-1 Zn（II））. Seven rhizobacterial strains with the best PGP traits were identified as members of Alcaligenes, Bacillus, Curtobacterium, and Microbacterium, and were selected for further bioassay. The inoculation of Brassica nigra seeds with Microbacteriurn sp. CE3R2, Microbacterium sp. nE1R5, Curtobacterium sp. nM1R1, and Microbacterium sp. nM3E9 facilitated the root development; they significantly improved the B. nigra seed germination and root growth in the presence of heavy metals such as 2.2 mmol L-1 Zn（II）. The rhizobacterial strains isolated in the present study had the potential to be used as efficient bioinoculants in phytorremediation of soils contaminated with multiple heavy metals.

关键词： bioinoculants endemic plants mine railings pH phytoremediation salinity

The Tesistan, Mexico earthquake (M_w 4.9) of 11 May 2016: seismic-tectonic environment and resonance vulnerability on buildings

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Earthquake engineering and engineering Vibration 2019年第3期18卷 579-595页

作者： Alejandro Ramírez-Gaytán Adolfo Preciado William L. Bandy Edilson F. Salazar-Monroy Miguel A. Jaimes Leonardo Alcantara departamento de ciencias Computacionales Centro Universitario de Ciencias Exactas e Ingeniería Universidad de Guadalajara Boulevard Marcelino García Barragán # 1421 44430 Guadalajara Jalisco México departamento del Hábitat y desarrollo Urbano Instituto Tecnológico y de Estudios Superiores de Occidente (ITESO). Periférico Sur Manuel Gómez Morin 8585 45604 Tlaquepaque Jalisco México instituto de Geofísica Universidad Nacional Autónoma de México Circuito Interior Ciudad Universitaria Del. Coyoacán 04510 México Programa de Posgrado en ciencias de la Tierra Universidad Nacional Autó noma de Mé xico Circuito Interior Ciudad Universitaria Del. Coyoacá n 04510 Mé xico instituto de Ingenieria Universidad Nacional Autónoma de México Circuito Interior Ciudad Universitaria Del. Coyoacán 04510 México

To highlight the importance of small earthquakes in seismic hazard, a study of the 11 May 2016, Mw 4.9, Tesistan, Mexico earthquake is presented. Due to the close proximity of the event to the city, accelerations were considerably higher than those caused by historical severe earthquakes (6.0 n event: the fi rst is to estimate the focal mechanism solution in order to place the event in the context of the tectonic environment of this area. The second is focused on a vulnerability evaluation of buildings that suff ered resonance. Several building′s typologies with variations in construction system and height are assessed in terms of resonance with the structural and soil periods. The results show that around the Zapopan station, strong damage is expected in intermediate to high-rise buildings (12-30 m) with moment resistant frame systems and in reinforced concrete shear walls. Masonry structures around this station may not present resonance. In contrast, in the surroundings of the Guadalajara station, all intermediate height buildings from 9 to 21 m may present resonance.

关键词： Tesistan earthquake seismicity of Guadalajara site eff ects structural vulnerability

Spectrophotometric determination of the formation constants of Calcium(Ⅱ) complexes with 1,2-ethylenediamine,1,3-propanediamine and 1,4-butanediamine in acetonitrile

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Green energy & environment 2017年第1期2卷 51-57页

作者： Jacqueline González González Mónica nájera-Lara Varinia López-Ramírez Juan Antonio Ramírez-Vázquez José J.n.Segoviano-Garfias Programa de Maestría en Biociencias División de Ciencias de la Vida (DICIVA) Universidad de Guanajuato Campus Irapuato-Salamanca Colegio del nivel Medio Superior de Salamanca(enMS) departamento de Ingeniería Bioquímica Instituto Tecnológico Superior de Irapuato (ITESI) departamento de ciencias Ambientales División de Ciencias de la Vida (DICIVA) Universidad de Guanajuato Campus Irapuato-Salamanca

In this work, with the purpose to explore the coordination chemistry of calcium complexes which could work as a partial model of manganese-calcium cluster, a spectrophotometric study to evaluate the stability of the complexes: Calcium(Ⅱ)-1,2-ethylendiamine, Calcium(Ⅱ)-1,3-propanediamine and Calcium(Ⅱ)-1,4-butanediamine in acetonitrile, were carried on. By processing the spectrophotometric data with the HypSpec program allows the determination of the formation constants. The logarithmic values of the formation constants obtained for Calcium(Ⅱ)-1,2-ethylendiamine, Calcium(Ⅱ)-1,3-propanediamine and Calcium(Ⅱ)-1,4-butanediamine were log β_(110) = 4.69, log β_(110)= 5.25 and log β_(110) = 4.072, respectively.

关键词： Calcium(Ⅱ)complexes Solution equilibria Artificial photosynthesis Absorbance molar Speciation