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Novel strategies to tailor the photocatalytic activity of metal–organic frameworks for hydrogen generation: a mini-review

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Frontiers in Energy 2022年第5期16卷 734-746页

作者： Luis A.ALFONSO-HERRERA leticia m.torres-martinez J.manuel mORA-HERNANDEZ Universidad Autónoma de Nuevo León UANLFacultad de Ingeniería CivilDepartamento de Ecomateriales y EnergíaAv.Universidad S/N Ciudad UniversitariaSan Nicolás de los GarzaNuevo León 66455México Centro de Investigación en materiales Avanzados S.C.(CIMAV)Miguel de Cervantes No.120.Complejo Ind.ChihuahuaChihuahuaChih 31136México CONACYT-Universidad Autónoma de Nuevo León UANLFacultad de Ingeniería CivilDepartamento de Ecomateriales y EnergíaAv.Universidad S/N Ciudad UniversitariaSan Nicolás de los GarzaNuevo León 66455México

This review provides a recompilation of the most important and recent strategies employed to increase the efficiency of metal-organic framework(mOF)-based systems toward the photocatalytic hydrogen evolution(PHE)reaction through specific strategies:tailoring the photocatalytic activity of bare mOFs and guest@mOF composites,formation of heterojunctions based on mOFs and various photocatalysts,and inorganic photocatalysts derived from *** to the data reported in this mini-review,the most effective strategy to improve the PHE of mOFs relies on modifying the linkers with new secondary building units(SBUs).Although several reviews have investigated the photocatalytic activity of mOFs from a general point of view,many of these studies relate this activity to the physicochemical and catalytic properties of ***,they did not consider the interactions between the components of the photocatalytic *** study highlights the effects of strength of the supramolecular interactions on the photocatalytic performance of bare and mOF-based materials during PHE.A thorough review and comparison of the results established that metal-nanoparticle@mOF composites have weak van der Waals forces between components,whereas heterostructures only interact with mOFs at the surface of bare *** material derivatives from mOFs,we found that pyrolysis destroyed some beneficial properties of mOFs for ***,we conclude that adding SBUs to organic linkers is the most efficient strategy to perform the PHE because the SBUs added to the mOFs promote synergy between the two materials through strong coordination bonds.

关键词： metal-organic frameworks(mOFs) photocatalytic hydrogen evolution mOF heterojunctions materials derived from mOFs bandgap recombination

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Exertional heat illness risk factors and physiological responses of youth football players

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Journal of Sport and Health Science 2021年第1期10卷 91-98页

作者： Susan W.Yeargin John J.Dickinson Dawn m.Emerson Jessica Koller Toni m.torres-mcGehee Zachary Y.Kerr Department of Exercise Science University of South CarolinaColumbiaSC 29208USA Palmetto Health/USC Orthopedic Center Keenan High SchoolColumbiaSC 29203USA Department of Health Sportand Exercise SciencesUniversity of KansasLawrenceKS 66045USA Surgi-Care Inc. BostonMA 02115USA Department of Exercise and Sport Science University of North CarolinaChapel HillNC 27599-8700USA

Objective:To determine which intrinsic and extrinsic exertional heat illness(EHI)risk factors exist in youth American football players and observe perceptual and physiological responses of players during events(games and practices).methods:Cross-sectional cohort study observing 63 youth football players,varying in *** variables were league(weightrestricted(WR,n=27)and age-restricted(AR,n=36))and event *** variables were anthropometrics,work-to-rest ratio,and wet bulb globe *** variables included preparticipation examination and uniform configuration.A subset of 16 players participated in physiological variables(heart rate and gastrointestinal temperature).Data collection occurred on 7 AR and 8 WR nonconsecutive practices and the first 3 games of the ***:mean values for anthropometric variables were higher(pme(χ^2(1,111)=4.232;p=0.039)and rest time(χ^2(1,111)=43.41;pmes,but ratios were significantly higher for practices(χ^2(1,111)=40.62;pmajority of events(77%)observed were in black and red flag wet bulb globe temperature risk categories.A total of 57%of the players had a preparticipation examination,and up to 82%of events observed were in full *** gastrointestinal temperature and heart rate responses ranged widely and no players reached critical ***:Extrinsic(disproportionate work ratios,environmental conditions)and intrinsic(higher body mass index)EHI risk factors exist in youth *** risk factors may be influenced by event and league *** youth football organizations need to create thorough guidelines that address EHI risk factors for local leagues to adopt.

关键词： Adolescents Anthropometrics Core temperature Heat exchange Pediatric Wet bulb globe temperature

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核磁共振扩散测量和q-空间成像进展(英文)

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波谱学杂志 2010年第3期27卷 267-288页

作者：卜威廉 Tim STAIT-GARDNER Allan m.torres 郑钢西悉尼大学纳米尺度组织和动态研究组

在过去的近半个世纪, NmR扩散测量在理论和实践方面都不断取得进展,使得测量更加可靠和准确,并能获取越来越多的信息.随着扩散测量技术的发展,其科学应用范围也不断增加,覆盖从物理化学到临床医学等各个领域. NmR扩散测量不仅能提供分... 详细信息

在过去的近半个世纪, NmR扩散测量在理论和实践方面都不断取得进展,使得测量更加可靠和准确,并能获取越来越多的信息.随着扩散测量技术的发展,其科学应用范围也不断增加,覆盖从物理化学到临床医学等各个领域. NmR扩散测量不仅能提供分子的平移运动动力学信息,而且也可以提供影响平移运动的局部几何结构的信息,后一种应用通常称为q-空间成像.该综述聚焦于过去10年中的NmR扩散研究方面一些重大的进展.

关键词：背景磁场梯度平移扩散 J-演化脉冲磁场梯度磁共振 q-空间成像单线态溶剂信号压制

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An acute naproxen dose does not affect core temperature or Interleukin-6 during cycling in a hot environment

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Sports medicine and Health Science 2021年第4期3卷 243-251页

作者： Dawn m.Emerson Stephen CL.Chen Toni m.torres-mcGehee Craig E.Pfeifer Charles C.Emerson J.mark Davis Department of Physical Therapy Rehabilitation Scienceand Athletic TrainingSchool of Health ProfessionsUniversity of Kansas Medical Center3901 Rainbow BlvdMS 2002Kansas CityKansas66160USA. Division of Exercise and Sport Science Bob Jones University1700 Wade Hampton BlvdGreenvilleSouth Carolina29614USA. Department of Exercise Science Arnold School of Public HealthUniversity of South Carolina921 Assembly StreetColumbiaSC29208USA Applied Sport and Exercise Sciences The ParkUniversity of GloucestershireCheltenham GL502RHUnited Kingdom. Department of Athletics 5100 Rockhill Rd SRC 201University of Missouri-Kansas CityKansas CityMissouri64110USA.

Non-steroidal anti-inflammatory drugs’anti-pyretic and anti-inflammatory effects has led some individuals to theorize these medications may blunt core body temperature(Tc)increases during *** utilized a double-blind,randomized,and counterbalanced cross-over design to examine the effects of a 24-h naproxen dose(3–220 mg naproxen pills)and placebo(0 mg naproxen)on Tc and plasma interleukin-6(IL-6)concentrations during cycling in a hot or ambient ***(n=11;6 male,5 female;age=27.8±6.5 years,weight=79.1±17.9 kg,height=177±9.5 cm)completed 4 conditions:1)placebo and ambient(Control);2)placebo and heat(Heat);3)naproxen and ambient(Npx);and 4)naproxen and heat(NpxHeat).Dependent measures were taken before,during,and immediately after 90 min of cycling and then 3 h after ***,Tc significantly increased pre-(37.1±0.4℃)to post-cycling(38.2±0.3℃,F_(1.7,67.3)=150.5,pmaximum Tc were not significantly different between ***-6 increased pre-(0.54±0.06 pg/ml)to post-exercise(2.46±0.28 pg/ml,pmained significantly higher than pre-at 3 h post-(1.17±0.14 pg/ml,95%CI=-1.01 to-0.23,p=0.001).No significant IL-6 differences occurred between conditions.A 24-h,over-the-counter naproxen dose did not significantly affect Tc or IL-6 among males and females cycling in hot or ambient environments.

关键词： Cytokine Exertional heat illness NSAIDs Thermoregulation Exercise

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Precipitation kinetics of carbides during cyclical and isothermal aging of 2.25Cr–1mo steel and its effect on mechanical properties

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Journal of Iron and Steel Research International 2021年第10期28卷 1282-1290页

作者： maribel leticia Saucedo-muñoz ESIQIE Instituto Politécnico NacionalMexico07300Mexico

The carbide precipitation was analyzed during aging of 2.25Cr–1mo steel at 550℃.The as-received steel was aged in two different manners:the first treatment was an isothermal aging at 550℃ for time up to 1000 h,and the second one was carried out by a cyclical aging,which consisted of aging at 550℃ for 1 h,water quenching at room temperature and then newly heating at 550℃.This procedure was repeated up to 300 *** m_(23)C_(6) and m6C carbide precipitation took place intragranularly and intergranularly for both aging *** carbide coarsening was detected to occur with the increasing aging ***,the growth kinetics of precipitation occurred more rapidly in the case of cyclical *** specimen hardness decreased with the aging time in both cases;however,it occurred in shorter aging time for the cyclical *** testing indicated the increase in ductility with the aging time,and the cyclically aged specimens showed larger ductility than the isothermally aged specimens.

关键词： 2.25Cr-1mo steel Precipitation Isothermal heating Cyclical heating mechanical property

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microRNA-502-3p regulates GABAergic synapse function in hippocampal neurons

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Neural Regeneration Research 2024年第12期19卷 2698-2707页

作者： Bhupender Sharma melissa mtorres Sheryl Rodriguez Laxman Gangwani Subodh Kumar Center of Emphasis in Neuroscience Department of Molecular and Translational MedicinePaul L.Foster School of MedicineTexas Tech University Health Sciences CenterEl PasoTXUSA Bond Life Sciences Center and Department of Veterinary Pathobiology University of MissouriColumbiaMOUSA L.Frederick Francis Graduate School of Biomedical Sciences Texas Tech University Health Sciences CenterEl PasoTXUSA

Gamma-aminobutyric acid(GABA)ergic neurons,the most abundant inhibitory neurons in the human brain,have been found to be reduced in many neurological disorders,including Alzheimer's disease and Alzheimer's disease-related *** previous study identified the upregulation of microRNA-502-3p(miR-502-3p)and downregulation of GABA type A receptor subunitα-1 in Alzheimer's disease *** study investigated a new molecular relationship between miR-502-3p and GABAergic synapse *** vitro studies were perfo rmed using the mouse hippocampal neuronal cell line HT22 and miR-502-3p agomiRs and *** silico analysis identified multiple binding sites of miR-502-3p at GABA type A receptor subunitα-1 *** assay confirmed that miR-502-3p targets the GABA type A receptor subunitα-1 gene and suppresses the luciferase ***,quantitative reve rse transcription-polymerase chain reaction,miRNA in situ hybridization,immunoblotting,and immunostaining analysis confirmed that overexpression of miR-502-3p reduced the GABA type A receptor subunitα-1 level,while suppression of miR-502-3p increased the level of GABA type A receptor subunitα-1 ***,as a result of the overexpression of miR-502-3p,cell viability was found to be reduced,and the population of necrotic cells was found to be *** whole cell patch-clamp analysis of human-GABA receptor A-α1/β3/γ2L human embryonic kidney(HEK)recombinant cell line also showed that overexpression of miR-502-3p reduced the GABA current and overall GABA function,suggesting a negative correlation between miR-502-3p levels and GABAergic synapse ***,the levels of proteins associated with Alzheimer s disease were high with miR-502-3p overexpression and reduced with miR-502-3p *** present study provides insight into the molecular mechanism of regulation of GABAergic synapses by *** propose that micro-RNA,in particular miR-502-3p,could be a potential the

关键词： Alzheimer's disease GABAergic synapse gamma-aminobutyric acid type A receptor subunitα-1(GABRα1) microRNA-502-3p(miR-502-3p) miRNA in situ hybridization Patch-clamp

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Renal elimination of organic anions in cholestasis

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World Journal of Gastroenterology 2008年第43期14卷 6616-6621页

作者： Adriana mónica torres Facultad de Ciencias Bioquimicas y Farmacéuticas Universidad Nacional de RosarioCONICETSuipacha 5312000RosarioArgentina

The disposition of most drugs is highly dependent on specialized transporters. OAT1 and OAT3 are two organic anion transporters expressed in the basolateral membrane of renal proximal tubule cells, identified as contributors to xenobiotic and endogenous organic anion secretion. It is well known that cholestasis may cause renal damage. Impairment of kidney function produces modifications in the renal elimination of drugs. Recent studies have demonstrated that the renal abundance of OAT1 and OAT3 plays an important role in the renal elimination of organic anions in the presence of extrahepatic cholestasis. Time elapsed after obstructive cholestasis has an important impact on the regulation of both types of organic anion transporters. The renal expression of OAT1 and OAT3 should be taken into account in order to improve pharmacotherapeutic efficacy and to prevent drug toxicity during the onset of this hepatic disease.

关键词： Organic anions P-aminohippurate Furosemide OAT1 OAT3 Extrahepatic cholestasis

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The Damage Spreading method in monte Carlo Simulations:A Brief Overview and Applications to Confined magnetic materials

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Communications in Computational Physics 2008年第7期4卷 207-230页

作者： m.leticia Rubio Puzzo Ezequiel V.Albano Instituto de Investigaciones Fisicoquimicas Teoricas y Aplicadas(INIFTA) UNLPCONICETCasilla de Correo 16 Sucursal 4(1900)La PlataArgentina

The Damage Spreading(DS)method allows the investigation of the effect caused by tiny perturbations,in the initial conditions of physical systems,on their final stationary or equilibrium *** damage(D(t))is determined during the dynamic evolution of a physical system and measures the time dependence of the difference between a reference(unperturbed)configuration and an initially perturbed *** this paper we first give a brief overview of monte Carlo simulation results obtained by applying the DS *** model systems under study often exhibit a transition between a state where the damage becomes healed(the frozen phase)and a regime where the damage spreads arriving at a finite(stationary)value(the damaged phase),when a control parameter is finely *** kinds of transitions are actually true irreversible phase transitions themselves,and the issue of their universality class is also ***,the attention is focused on the propagation of damage in magnetic systems placed in confined *** influence of interfaces between magnetic domains of different orientation on the spreading of the perturbation is also discussed,showing that the presence of interfaces enhances the propagation of the ***,the critical transition between propagation and nonpropagation of the damage is *** all cases,the determined critical exponents suggest that the DS transition does not belong to the universality class of Directed Percolation,unlike many other systems exhibiting irreversible phase *** result reflects the dramatic influence of interfaces on the propagation of perturbations in magnetic systems.

关键词： Propagation of perturbations phase transitions and critical phenomena magnetic systems in confined geometries.

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Long-term stability in protected-areas?A vision from American/New World amphibians

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Geography and Sustainability 2024年第4期5卷 673-683页

作者： leticia m.Ochoa-Ochoa Julian A.Velasco Facultad de Ciencias Universidad Nacional Autónoma de MexicoCP 04510Mexico CityMexico Instituto de Ciencias de la Atmósfera y Cambio Climático Universidad Nacional Autónoma de MexicoCP 04510Mexico CityMexico

Protected areas(PA)have proven to be one of the best ways to conserve biodiversity against environmental *** are considered the most threatened group,with habitat loss due to deforestation identified as their major ***,we assessed for each PA of the American continent:1)amphibian’s occurrence(Global Biodiversity Information Facility(GBIF)*** Union for Conservation of Nature(IUCN)data);2)temperature velocity and estimated the climate residence time,and using the latest models of the land future use;3)we estimated the changes of natural *** cover in three future *** occurrence showed differences between databases,while GBIF data shows that 52%of the amphibian species occurring in the continent are in PA,based on IUCN data,85%are *** from climate change show a low pace of climate velocity during the last century that is maintained in the green scenario(SSP126).However,change in temperature increases in rate in the rest of the scenarios,with scenario SSP58 showing the highest velocity of temperature *** estimates of residence times in PA show that lower levels as emission scenarios tend to be *** results are worrisome since climate lag,specifically temperature increase over the PA will probably affect amphibian communities as shown in previous *** in climate patterns have a direct—mostly negative—impact on amphibians’ability to disperse and *** results of land use change were unexpected,since the categories showed minimal ***,the data on urbanization changes do not seem to be reflecting the trends of other databases,which may be causing artifacts in the comparisons in the future models of land *** research will be necessary to evaluate the extent of similarities and differences in future projections of land use including urbanization and human population between different databases.

关键词： Climate lag Conservation Future land use models Governance Temperature tendency

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A 24 hour naproxen dose on gastrointestinal distress and performance during cycling in the heat

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Sports medicine and Health Science 2020年第1期2卷 19-24页

作者： Dawn m.Emerson J.mark Davis Stephen CL.Chen Toni m.torres-mcGehee Craig E.Pfeifer Charles C.Emerson Joseph D.Bivona Justin V.Stone Department of Health Sportand Exercise SciencesUniversity of KansasLawrenceKansasUSA Department of Exercise Science University of South CarolinaColumbiaSCUSA Division of Exercise and Sport Science Bob Jones UniversityGreenvilleSouth CarolinaUSA Applied Sport and Exercise Sciences The ParkUniversity of GloucestershireCheltenham GL502RHUnited Kingdom Department of Athletics University of Missouri-Kansas CityKansas CityUSA

Using a double-blind,randomized and counterbalanced,cross-over design,we assessed naproxen's effects on gastrointestinal(GI)distress and performance in eleven volunteers(6 male,5 female).Participants completed 4 trials:1)placebo and ambient);2)placebo and heat;3)naproxen and ambient;and 4)naproxen and *** variables were one placebo or 220 mg naproxen pill every 8 h(h)for 24 h and ambient(22.7±1.8℃)or thermal environment(35.7±1.3℃).Participants cycled 80 min at a steady heart rate then 10 min for maximum *** exertion was measured throughout *** distress was assessed pre-,during,post-,3 h post-,and 24 h post-cycling using a GI index for upper,lower,and systemic *** statistically significant differences occurred between conditions at any time for GI symptoms or perceived exertion,distance,or heart rate during maximum effort.A 24 h naproxen dose did not significantly affect performance or cause more frequent or serious GI distress when participants were euhydrated and cycling at moderate intensity in a thermal environment.

关键词： NSAID Gastrointestinal bleeding Heart rate Perceived exertion

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