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Current Zoology 2011年第1期57卷 1-7页

作者： Sarie VAN BELLE Alejandro ESTRADA Karen B. STRIER Department of Zoology University of Wisconsin-Madison USA Estaclon de Blologla Tropical Los Tuxtlas Instituto de Biologfa Universidad Nacional Autonoma de Mexico Mexico Department of Anthropology University of Wisconsin-Madison USA

Abstract We investigated the social relationships among adult females in two multimale-multifemale groups of black howler monkeys Alouatta pigra during a 14-month study in Palenque National Park, mexico. Based on over 900 focal hours and over 5400 scan samples recording neighboring group members, we found that females very rarely engaged in agonistic interactions and no dominance hierarchy could be discerned. Relationships among resident females were primarily affiliative, but females of one study group spent a higher proportion of time in close proximity and engaged in affiliative interactions with one another at higher rates than females in the other study group. The strength of female relationships increased with the birth of an infant. Al- though no females immigrated during the study period, the temporary association of three extragroup females with our study groups implies that the social system of black howler monkeys is more dynamic than previously suggested. These findings sug- gest that female black howler monkeys behave more similarly to female red howler monkeys A. seniculus than to female mantled howler monkeys A. palliata

关键词： Black howler monkey Alouatta pigra Affiliation Agonism Female dispersal

Alterations in blink and masseter reflex latencies in older adults with neurocognitive disorder and/or diabetes mellitus

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World Journal of Clinical Cases 2022年第1期10卷 177-188页

作者： Jaime Alberto Bricio-Barrios Eder Ríos-Bracamontes Mónica Ríos-Silva Miguel Huerta Walter Serrano-Moreno JoséEnrique Barrios-Navarro Genaro Gabriel Ortiz Miguel Huerta-Trujillo JoséGuzmán-Esquivel Xóchitl Trujillo Faculty of Medicine University of ColimaColima 28040ColimaMexico General Hospital Zone#1 Mexican Social Security InstituteVilla de Alvarez 28983ColimaMexico University Biomedical Research Center University of ColimaColima 28045ColimaMexico University Biomedical Research Center CONACYTColima 28045ColimaMexico Department of Philosophical and Methodological Disciplines University Health Sciences CenterUniversity of GuadalajaraGuadalajara 44340JaliscoMexico

BACKGROUND Blink and masseter reflexes provide reliable,quantifiable data on the function of the central nervous system:Delayed latencies have been found in patients with neurocognitive disorder(ND)and type 2 diabetes mellitus(T2DM),but this has not been studied in patients with both *** To investigate if older adults with ND plus T2DM have prolonged latencies of blink and masseter-reflex and if they were associated with disease *** This cross-sectional study included 227 older adults(>60 years)from Colima,*** disorder was identified by a neuropsychological battery test,and T2DM identified by medical history,fasting glucose,and glycosylated *** in the early reflex(R1),ipsilateral late(R2),and contralateral late(R2c)components of the blink reflex were analyzed for all subjects,and 183 subjects were analyzed for latency of the masseter *** In 20.7%of participants,ND was *** 37%,T2DM was *** in R1,R2,and R2c were significantly prolonged for groups with ND plus T2DM,ND,and T2DM,compared with the control group(P<0.0001).The masseter reflex was only prolonged in older adults(regardless of T2DM status)with ND vs controls(P=0.030).In older adults with ND and without T2DM,the more the cognitive impairment progressed,the more prolonged latencies in R2 and R2c presented(P<0.01).CONCLUSION These findings suggest that blink and masseter reflexes could be used to evaluate possible changes in brainstem circuits in older adults with ND and T2DM.

关键词： Blink reflex Masseter reflex Brainstem reflexes Neurocognitive disorder Type 2 diabetes mellitus Older adults

Evaluation of curcumin and copper acetate against Salmonella Typhimurium infection,intestinal permeability,and cecal microbiota composition in broiler chickens

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Journal of Animal Science and Biotechnology 2021年第3期12卷 1019-1030页

作者： Anaisa ALeyva-Diaz Daniel Hernandez-Patlan Bruno Solis-Cruz Bishnu Adhikari Young Min Kwon Juan D.Latorre Xochitl Hernandez-Velasco Benjamin Fuente-Martinez Billy M.Hargis Raquel Lopez-Arellano Guillermo Tellez-Isaias Departamento de Medicina y Zootecnia de Aves Facultad de Medicina Veterinaria y ZootecniaUNAM04510 Ciudad de MexicoMexico Laboratorio 5:LEDEFAR Unidad de Investigacion MultidisciplinariaFacultad de Estudios Superiores(FES)CuautitlanUniversidad Nacional Autonoma de Mexico(UNAM)54714 Cuautitlan IzcalliMexico Department of Poultry Science Center of Excellence for Poultry ScienceUniversity of Arkansas1260 W.MaplePOSC 0-114FayettevilleAR 72704USA Centro de Ensenanza Investigacion y Extension en Produccion AvicolaFacultad de Medicina Veterinaria y ZootecniaUNAMCiudad de MexicoMexico

Background:Interest in the use of natural feed additives as an alternative to antimicrobials in the poultry industry has increased in recent years because of the risk of bacterial *** of the most studied groups are polyphenolic compounds,given their advantages over other types of additives and their easy potentiation of effects when complexes are formed with metal ***,the objective of the present study was to evaluate the impact of dietary supplementation of copper acetate(CA),curcumin(CR),and their combination(CA-CR)against Salmonella Typhimurium colonization,intestinal permeability,and cecal microbiota composition in broiler chickens through a laboratory Salmonella infection *** recovery was determined on day 10 post-challenge by isolating Salmonella in homogenates of the right cecal tonsil(12 chickens per group)on Xylose Lysine Tergitol-4(XLT-4)with novobiocin and nalidixic *** integrity was indirectly determined by the fluorometric measurement of fluorescein isothiocyanate dextran(FITC-d)in serum samples from blood obtained on d 10 *** ***,microbiota analysis was performed using the content of the left caecal tonsil of 5 chickens per group by sequencing V4 region of 16S rRNA ***:The results showed that in two independent studies,all experimental treatments were able to significantly reduce the *** colonization in cecal tonsils(CT,P<0.0001)compared to the positive control(PC)***,only CA-CR was the most effective treatment in reducing *** counts in both independent ***,the serum fluorescein isothiocyanate dextran(FITC-d)concentration in chickens treated with CR was significantly lower when compared to PC(P=0.0084),which is related to a decrease in intestinal permeability and therefore intestinal *** effect of dietary treatments in reducing Salmonella was further supported by the analysis of 16S rRNA gene sequences using Li

关键词： Broiler chickens Copper acetate Curcumin Intestinal permeability Microbiota composition Salmonella Typhimurium

Numerical Model of Ultra-High Molecular Weight Polyethylene Abrasive Wear Tests

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Modeling and Numerical Simulation of Material Science 2020年第1期10卷 1-14页

作者： Tomas De la Mora Ramirez Isaias Hilerio Cruz Marco Antonio Donu Ruiz Noe Lopez Perrusquia David Garcia Bustos Martin Flores Martinez Autonomous Metropolitan University Azcapotzalco UnitAzcapotzalcoMexico CityMexico Science and Engineering of Materials Technological of Studies of JocotitlanJocotitlan State of MexicoMexico group of Materials Science and Engineering Polytechnic University of the Valley of MexicoTultitlanMariano EscobedoMexico University of Guadalajara University Center of Exact Sciences and EngineeringGuadalajaraMéxico

Ultra-high molecular weight polyethylene (UHMWPE) has been used in orthopedics as one of the materials for artificial joints in knee, hip and spine prostheses, most of the implanted joints are designed so that the metal of the prosthesis is articulate against a polymeric material, however the main problems is the average life time of the UHMWPE due to wear, and the particles generated by the friction of the metal on the articulation of the polymer are the most common inducer of osteolysis, generating a loosening of the implant leading to an imminent failure resulting in the total replacement of the prosthesis. In this investigation a numerical model of abrasive wear was made using the classic Archard wear equation applied to dynamic simulation of finite element analysis (FEA) of the micro-abrasion test using a subroutine written in Fortran language linked to the finite element software to predict the rate of wear. The results of the numerical model were compared with tests of abrasive wear in the laboratory, obtaining a margin of error below 5%,concluding that the numerical model is feasible for the prediction of the rate of wear and could be applied in knowing the life cycle of joint prostheses or for the tribological analysis in industrial machinery or cutting tools. The wear coefficient (K) was obtained from the grinding tests depending on the depth of stroke of the crater, which was analyzed by 3D profilometry to obtain the wear rate and the wear constant.

关键词： Abrasive Wear Finite Element Numerical Wear Model UHMWPE

Phylogeography and morphometric variation in the Cinnamon Hummingbird complex:Amazilia rutila(Aves:Trochilidae)

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Avian Research 2021年第4期12卷 509-525页

作者： Melisa Vázquez-López Nandadevi Córtes-Rodríguez Sahid M.Robles-Bello Alfredo Bueno-Hernández Luz E.Zamudio-Beltrán Kristen Ruegg Blanca E.Hernández-Baños Museo de Zoología Facultad de CienciasUniversidad Nacional Autónoma de MéxicoApartado Postal04510 Mexico CityMexico Department of Biology Ithaca CollegeIthacaNY 14850USA Museo de Zoología Facultad de Estudios Superiores ZaragozaUniversidad Nacional Autónoma de MéxicoMexico CityMexico Department of Biology Colorado State UniversityFort CollinsCO 80523USA

Background:The Mesoamerican dominion is a biogeographic area of great interest due to its complex topography and distinctive climatic *** area has a large diversity of habitats,including tropical deciduous forests,which house a large number of endemic ***,we assess phylogeographic pattern,genetic and morphometric variation in the Cinnamon Hummingbird complex Amazilia rutila,which prefers habitats in this *** resident species is distributed along the Pacific coast from Sinaloa—including the Tres Marías Islands in mexico to Costa Rica,and from the coastal plain of the Yucatán Peninsula of mexico south to ***:We obtained genetic data from 85 samples of ***,using 4 different molecular markers(mtDNA:ND2,COI;nDNA:ODC,MUSK)on which we performed analyses of population structure(median-joining network,STRU CTU RE,FST,AMOVA),Bayesian and Maximum Likelihood phylogenetic analyses,and divergence time *** order to evaluate the historic suitability of environmental conditions,we constructed projection models using past scenarios(Pleistocene periods),and conducted Bayesian Skyline Plots(BSP)to visualize changes in population sizes over *** analyze morphometric variation,we took measurements of 5 morphological traits from 210 study *** tested for differences between sexes,differences among geographic groups(defined based on genetic results),and used PCA to examine the variation in multivariate ***:Using mtDNA,we recovered four main geographic groups:the Pacific coast,the Tres Marías Islands,the Chiapas region,and the Yucatán Peninsula together with Central *** same groups were recovered by the phylogenetic results based on the multilocus *** based on BSP results showed constant population size over time throughout the *** complex and within each geographic *** niche model projec-tions onto past scenarios revealed no drastic changes in suitable conditions,but revealed some

关键词： Amazilia rutila Genetic structure Genetic variation Phylogeography Tres Marías Islands Trochilidae Tropical deciduous forest

Recent trends and technical advancements in biosensors and their emerging applications in food and bioscience

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Food Bioscience 2022年第3期47卷 1023-1050页

作者： Oluwatosin E.Bankole Deepak Kumar Verma Mónica L.Chávez González Juan Guzmán Ceferino JoséSandoval-Cortés Cristóbal N.Aguilar Department of Chemical Sciences Faculty of Science and Science EducationAnchor UniversityLagos StateNigeria Agricultural and Food Engineering Department Indian Institute of Technology KharagpurKharagpur721302West BengalIndia Bioprocesses Research group Food Research DepartmentSchool of ChemistryUniversidad Autonoma de CoahuilaUnidad Saltillo25280CoahuilaMexico Los Ríos Multidisciplinary Academic Division Universidad Juárez Autónoma de TabascoTabascoMexico Department of Analytical Chemistry School of ChemistryUniversidad Autonoma de CoahuilaUnidad Saltillo25280CoahuilaMexico

Biosensor development has recently advanced as a result of their strong and indisputable uses as analytical methods in a variety of sectors,including medicine,food industry,environmental monitoring,metabolism,agriculture,military,and *** popularity of biosensors as devices for a variety of applications may be ascribed to their distinct advantages of fast or rapid analysis,high sensitivity,minimal sample demand and preparation,and no need for the specific skill of operation that traditional analytical procedures *** attempted to update earlier studies in this study by incorporating other materials that have been in use but have received less attention,such as carbon nano-onions(CNOs),metal-organic frameworks(MOFs),and biopolymers for biosensor manufacturing and design based on their unique *** assessment also took into account applicable applications in many *** considerable progress has been made in the application of biosensors,there is still a need for research development and enhancement,particularly in transforming most of the laboratory experiments that have already been published into portable on-site and implementable in the public domains.

关键词： Biosensors Nanotechnology Nano-materials Food quality and safety Food snd biomedical industry Industrial application

IMEX Evolution of Scalar Fields on Curved Backgrounds

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Communications in Computational Physics 2009年第10期6卷 1063-1094页

作者： S.R.Lau H.P.Pfeiffer J.S.Hesthaven Division of Applied Mathematics Brown UniversityProvidenceRI 02912USA Theoretical Astrophysics and Relativity group 130-33 California Institute of TechnologyPasadenaCA 91125USA Also at the Department of Mathematics and Statistics University of New MexicoAlbuquerqueNM 87131USA.

Inspiral of binary black holes occurs over a time-scale of many orbits,far longer than the dynamical time-scale of the individual black *** evolutions of a binary system therefore require excessively many time-steps to capture interesting *** present a strategy to overcome the Courant-Friedrichs-Lewy condition in such evolutions,one relying on modern implicit-explicit ODE solvers and multidomain spectral methods for elliptic *** analysis considers the model problem of a forced scalar field propagating on a generic curved ***,we encounter and address a number of issues pertinent to the binary black hole problem in full general *** to the Schwarzschild geometry in KerrSchild coordinates,we document the results of several numerical experiments testing our strategy.

关键词： Implicit-explicit schemes spectral methods numerical relativity black holes

The Collapse of Culverts-Arch in Several Cities around the World, Technical Arguments for Their Maintenance and a Legal Proposal for Prohibiting Their Construction in mexico

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Journal of Water Resource and Protection 2019年第12期11卷 1489-1502页

作者： Martín D. Mundo Molina José L. Pérez Díaz Daniel Hernández Cruz Eber Godínez Domínguez Academic group Science and Engineering Research Center of the Engineering Faculty Chiapas State University Chiapas Mexico

Construction underground pipes and underground culvertsarch (UCA) in order to transport the flow natural rivers and city’s sewage at the same time, is a practice that should be prohibited by the mexico National Water Law (NWL). When UCA collapse, it causes severe damage to surrounding infrastructure, public and private property, and puts citizens’ lives at risk. This work presents some examples of UCA collapse incidents in several cities around the world, emphasizes how important preventive maintenance of these structures is, highlights the need to classify risk areas, and stresses the need to formulate norms and civil defense plans as article 83 of the NWL suggests. We also propose an addition to Fraction I, article 100 of the National Water Law, to protect the animal and plant life of its banks and safety of their natural runoff.

关键词： Culvert National Water Law Collapse

Temperature-field history dependence of the elastocaloric effect for a strain glass alloy

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Journal of Materials Science & Technology 2022年第8期103卷 8-14页

作者： Deqing Xue Ruihao Yuan Yuanchao Yang Jianbo Pang Yumei Zhou Xiangdong Ding Turab Lookman Xiaobing Ren Jun Sun Dezhen Xue State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049China School of Materials Science and Engineering Xi’an University of TechnologyXi’an 710048China AiMaterials Research Santa FeNew Mexico 87501USA Ferroic Physics group National Institute for Materials ScienceTsukuba 305-0047IbarakiJapan

The singular change of the order parameter at the first order martensitic transformation(MT)temperature restricts the caloric response to a narrow temperature *** the MT is tuned into a sluggish strain glass transition by defect doping and a large elastocaloric effect appears in a wide temperature ***,an inverse elastocaloric effect is observed in the strain glass alloy with history of zerofield cooling and is attributed to the slow dynamics of the nanodomains in response to the external *** study offers a design recipe to expand the temperature range for good elastocaloric effect.

关键词： Elastocaloric effect Isothermal entropy change Strain glass

Darunavir Resistance in HIV Infecting Protease Inhibitor-Experienced Mexican Patients

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World Journal of AIDS 2013年第3期3卷 280-286页

作者： Carlos AAgudelo Luis ESoto-Ramirez Abraham Katime-Zuniga Lorena Cabrera-Ruiz Hugo Lara-Sanchez Juan JCalva Department of Infectious Diseases “Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran”Mexico CityMexico Department of Infectious Diseases Hospital Medica Sur and GUIAR GroupMexico CityMexico The Clinical Epidemiology Unit “Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran”Mexico CityMexico.

Background: Darunavir (DRV) is a useful antiretroviral treatment in the salvage therapy of multiclass-resistant HIV-infected patients. This study’s aim was to determine the frequency and risk factors for DRV resistance-associated mutations (DRV-RAM) among DRV-naive Mexican patients with virologic failure after extensive antiretroviral treatment and exposure to at least one protease inhibitor (PI). Methods: HIV-infected patients with a history of at least 2 failed regimes were included and their clinical histories and genotype resistance tests were analyzed. Major PI resistance-associated mutations (PI-RAM), DRV-RAM and resistance to DRV were defined according to the IAS-USA criteria. Previous exposure to PI was compared between patients with DRV-resistant HIV and DRV-susceptible HIV-infected controls. Results: The median number of major PI-RAM was 2 (IQR = 0?- 3). In 54.7% (95% CI = 50.0% - 59.4%) of 631 subjects, no DRV-RAM were found on viral genotyping and 6.7% (95% CI = 4.8% - 8.6%) had 3 or more DRV-RAM. The two most frequently found DRV-RAM were in codons I84V (in 22.7% of cases) and L33F (in 20% of cases) in the viral protease gene. The number of major PI-RAM (as a surrogate marker of duration and number of PI used) and previous exposure to (fos) amprenavir or tipranavir were independently associated with DRV-resistant HIV infection. Conclusions: In this Mexican population, despite a high prior PI exposure, HIV-DRV resistance rate is relatively low and successful viral control with DRV-containing combined salvage therapy is expected in most patients.

关键词： Darunavir Resistance Risk Factors Prevalence mexico