检索结果-南通市图书馆

Nickel-based cerium zirconate inorganic complex structures for CO_(2)valorisation via dry reforming of methane

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2024年第6期140卷 12-23页

作者： Juan Luis Martín-Espejo Loukia-Pantzechroula Merkouri Jesús Gándara-Loe José antonio Odriozola Tomas ramirez Reina Laura Pastor-Pérez Department of Inorganic Chemistry and Material Sciences Institute of Seville University of Seville-CSICSeville 41092Spain Department of Chemical and Process Engineering University of SurreyGuildford GU27XHUnited Kingdom

The increasing anthropogenic emissions of greenhouse gases(GHG)is encouraging extensive research in CO_(2)*** reforming of methane(DRM)depicts a viable strategy to convert both CO_(2)and CH4into syngas,a worthwhile chemical *** the different active phases for DRM,the use of nickel as catalyst is economically favourable,but typically deactivates due to sintering and carbon *** stabilisation of Ni at different loadings in cerium zirconate inorganic complex structures is investigated in this work as strategy to develop robust Ni-based DRM *** and TPR-H2analyses confirmed the existence of different phases according to the Ni loading in these ***,superficial Ni is observed as well as the existence of a CeNiO_(3)perovskite *** catalytic activity was tested,proving that 10 wt.%Ni loading is the optimum which maximises *** catalyst was also tested in long-term stability experiments at 600and 800℃in order to study the potential deactivation issues at two different *** 600℃,carbon formation is the main cause of catalytic deactivation,whereas a robust stability is shown at 800℃,observing no sintering of the active phase evidencing the success of this strategy rendering a new family of economically appealing CO_(2)and biogas mixtures upgrading catalysts.

关键词： CO_(2)conversion Dry reforming of methane Nickel catalysts Pyrochlore Cerium zirconate

The effects of plyometric jump training on physical fitness attributes in basketball players:A meta-analysis`

在线全文

学校读者我要写书评

暂无评论

Journal of Sport and Health Science 2022年第6期11卷 656-670,F0003页

作者： Rodrigo ramirez-Campillo antonio García-Hermoso Jason Moran Helmi Chaabene Yassine Negra Aaron T.Scanlan Department of Physical Activity Sciences Universidad de Los LagosOsorno 5290000Chile Centro de Investigación en Fisiología del Ejercicio Facultad de CienciasUniversidad MayorSantiago 7500000Chile Navarrabiomed Complejo Hospitalario de Navarra(CHN)Universidad Pública de Navarra(UPNA)IdiSNAPamplona 31008Spain Laboratorio de Ciencias de la Actividad Física el Deporte y la SaludUniversidad de Santiago de ChileUSACHSantiago 9170020Chile School of Sport Rehabilitation and Exercise SciencesUniversity of EssexColchesterEssexCO43SQUnited Kingdom Division of Training and Movement Sciences University of PotsdamPotsdam 14469Germany High Institute of Sports and Physical Education KefUniversity of JendoubaLa Manouba 8189Tunisia Research Unit(UR 17JS01 Sport PerformanceHealth&Society)Higher Institute of Sport and Physical Education of Ksar SaîdUniversity of“La Manouba”Rockhampton 2037Tunisia Human Exercise and Training Laboratory School of HealthMedical and Applied SciencesCentral Queensland UniversityRockhamptonQueenslandQLD 4702Australia

Background:There is a growing body of experimental evidence examining the effects of plyometric jump training(PJT)on physical fitness attributes in basketball players;however,this evidence has not yet been comprehensively and systematically ***,our objective was to meta-analyze the effects of PJT on physical fitness attributes in basketball players,in comparison to a control ***:A systematic literature search was conducted in the databases PubMed,Web of Science,and Scopus,up to July ***-reviewed controlled trials with baseline and follow-up measurements investigating the effects of PJT on physical fitness attributes(muscle power,i.e.,jumping performance,linear sprint speed,change-of-direction speed,balance,and muscle strength)in basketball players,with no restrictions on their playing level,sex,or ***’s g effect sizes(ES)were calculated for physical fitness *** a random-effects model,potential sources of heterogeneity were selected,including subgroup analyses(age,sex,body mass,and height)and single training factor analysis(program duration,training frequency,and total number of training sessions).Computation of metaregression was also ***:Thirty-two studies were included,involving 818 total basketball ***(p10 m(ES=0.92),change-of-direction performance time across distances≤40 m(ES=1.15)and>40 m(ES=1.02),dynamic(ES=1.16)and static balance(ES=1.48),and maximal strength(ES=0.57).The meta-regression revealed that training duration,training frequency,and total number of sessions completed did not predict the effects of PJT on physical fitness *** analysis indicated greater improvement

关键词： Exercise therapy Human physical conditioning Resistance training Stretch reflex Team sports

Is device-measured vigorous physical activity associated with health-related outcomes in children and adolescents? A systematic review and meta-analysis

在线全文

学校读者我要写书评

暂无评论

Journal of Sport and Health Science 2021年第3期10卷 296-307页

作者： antonio Garcia-Hermoso Yasmin Ezzatvar Robinson ramirez-Velez Jordi Olloquequi Mikel Izquierdo Navarrabiomed Navarra Hospital Complex(CHN)Public University of Navarra(UPNA)IdiSNAPamplona 31008Spain University of Santiago of Chile(USACH) Sciences of Physical ActivitySports and Health SchoolSantiago 71783-5Chile Exercise Intervention for Health Research Group(EXINH-RG) Department of PhysiotherapyUniversitat de ValenciaValencia 46010Spain Institute of Biomedical Sciences Faculthy of Health SciencesUniversidad Autonoma de ChileTalca 3460000Chile

Objective:This study sought to analyze the prospective association between vigorous-intensity physical activity(VPA)and health-related outcomes in children and ***:Studies reporting associations between device-measured VPA and health-related factors in children and adolescents aged 318 years were identified through database searches(MEDLINE,EMBASE,and SPORTDiscus).Correlation coefficients were pooled if outcomes were reported by at least 3 studies,using DerSimonian-Laird random effects ***:Data from 23 studies including 13,674 participants were pooled using random effects *** associations were found between VPA at baseline and overall adiposity(r=0.09,95%confidence interval(95%CI):0.15 to0.03;p=0.002;I^(2)=89.8%),cardiometabolic risk score(r=0.13,95%CI:0.24 to0.02,p=0.020;I^(2)=69.6%),cardiorespiratory fitness(r=0.25,95%CI:0.150.35;p<0.001;I^(2)=57.2%),and total body bone mineral density(r=0.16,95%CI:0.06 to 0.25;p=0.001;I^(2)=0%).Conclusion:VPA seems to be negatively related to adiposity and cardiometabolic risk score and positively related to cardiorespiratory fitness and total body bone mineral density among children and adolescents at ***,our findings support the need to strengthen physical activity recommendations regarding VPA due to its health benefits in children and adolescents.

关键词： Accelerometry Adiposity Fitness Physical activity

Hepatotoxicity induced by acute and chronic paracetamol overdose in children: Where do we stand?

在线全文

学校读者我要写书评

暂无评论

World Journal of Pediatrics 2017年第1期13卷 76-83页

作者： Hoi Yan Tong Nicolás Medrano Alberto Manuel Borobia Joséantonio Ruiz Ana María Martínez Julia Martín Manuel Quintana Santos Garcfa antonio Jos6 Carcas Elena ramirez Department of Clinical Pharmacology Hospital Universitario La PazIdiPAZSchool of MedicineUniversidad Autónoma de MadridMadridSpain Pediatric Emergency Department Hospital Universitario La PazIdiPAZMadridSpain General Emergency Department Hospital Universitario La PazIdiPAZMadridSpain

Background:There are few data Oll hepatotoxicity induced by acute or chronic paracetamol poisoning in the pediatric *** poisoning data can reveal the weakn嗍ofparacetamol poisoning management ***:We retrospectively studied the patients of less than 18 years old with measurable paracetamol levels,who were brought to the emergency department(ED)of La Paz University Hospital,Madrid,Spain,for suspected paracetamol overdoses between 2005 and 2010.

关键词： acute liver failure hepatotoxicity paracetamol poisoning

领导者–跟随者Thomson跳环系统的自抗扰控制设计(英文)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

控制理论与应用 2013年第12期30卷 1564-1572页

作者： Mario ramirez-NERIA José L GARCIA-antonio Hebertt J SIRA-ramirez Martin VELASCO-VILLA Rafael CASTRO-LINARES Depto. de Control Automatico Cinvestav Av. IPN 2508 C.E 07360 Mexico D.F. Seccion de Mecatronica Depto. de Ingenieria Electrica Cinvestav Av. IPN 2508 C.E 07360 Mexico D.E

将用电磁方法悬浮起来的一对环构成领导者–跟随者系统实现对光滑参考轨线的跟踪要求.这一任务通过设计具有对扰动进行在线估计与补偿功能的自抗扰控制器(ADRC)实现.本文设计方法与传统ADRC的主要不同在于领导者和跟随者的跟踪控制器设... 详细信息

将用电磁方法悬浮起来的一对环构成领导者–跟随者系统实现对光滑参考轨线的跟踪要求.这一任务通过设计具有对扰动进行在线估计与补偿功能的自抗扰控制器(ADRC)实现.本文设计方法与传统ADRC的主要不同在于领导者和跟随者的跟踪控制器设计都是基于平坦输出的线性化近似系统.超出线性化近似有效区域的大的高度偏差所导致的未知非线性则被视为扰动,这个扰动借助于线性扩张观测器进行在线估计并通过线性反馈控制器进行消除.实验结果检验了本文所提方法的有效性.

关键词： Thomson跳环自抗扰控制广义比例积分(GPI)观测器领导者-跟随者布局

Concept Selection for Hydrocarbon Field Development Planning

在线全文

学校读者我要写书评

暂无评论

Engineering（科研） 2012年第11期4卷 794-808页

作者： J. Efrain Rodriguez-Sanchez J. Martin Godoy-Alcantar Israel ramirez-antonio Instituto Mexicano del Petróleo Mexico City Mexico

Two methodologies to rank exploitation scenarios for hydrocarbon fields during screening and concept selection stages are described and compared. First a selection based on net present value valuation is introduced and an explanation on its limitations for field planning are given thus, a second selection based on a multiattribute decision model where other technical factors not directly associated to economics such as operability and reliability are considered. A comparison of net present value and the multiattribute decision model on a concept selection study case shows differences on the scenario selection for exploitation. Sources of the different outcomes between the two methodologies are identified. A stochastic analysis for the multiattribute decision model is performed to have a complete view of the possible outcomes since the factors in the multiattribute decision model are measured qualitatively and their values can vary depending on experts’ knowledge and experience. Recommendations obtained from the methodologies studied for screening and concept selection are given.

关键词： Oil Planning Deep Water Concept Front End Loading

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

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

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

Investigation of temporal and spatial heterogeneities of the immune responses to Bordetella pertussis infection in the lung and spleen of mice via analysis and modeling of dynamic microarray gene expression data

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Infectious Disease Modelling 2019年第1期4卷 215-226页

作者： Nan Deng Juan C.ramirez Michelle Carey Hongyu Miao Cesar A.Arias Andrew P.Rice Hulin Wu Department of Biostatistics and Data Science School of Public HealthThe University of Texas Health Science Center at HoustonHoustonTXUSA Facultad de Ingeniería de Sistemas Universidad Antonio NariňoBogotáColombia School of Mathematics and Statistics University College DublinDublinIreland Center for Antimicrobial Resistance and Microbial Genomics(CARMiG) UTHealth McGovern Medical SchoolUSA Divicon of Infectious Diseases and Department of Microbiology and Molecular Genetics UTHealth McGovern Medical SchoolUSA Center for Infectious Diseases UTHealth School of Public HealthUSA Molecular Genetics and Antimicrobial Resistance Unit and International Center for Microbial Genomics Universidad El BosqueBogotaColombia Department of Molecular Virology&Microbiology Baylor College of MedicineHoustonTXUSA

Bordetella pertussis(***)is the causative agent of pertussis,also referenced as whooping *** pertussis has been appropriately controlled by routine immunization of infants,it has experienced a resurgence since the beginning of the 21st *** that elucidating the immune response to pertussis is a crucial factor to improve therapeutic and preventive treatments,we re-analyzed a time course microarray dataset of *** infection by applying a newly developed dynamic data analysis *** results indicate that the immune response to *** is highly dynamic and heterologous across different organs during ***1 and Th17 cells,which are two critical types of T helper cell populations in the immune response to ***,and follicular T helper cells(TFHs),which are also essential for generating antibodies,might be generated at different time points and distinct locations after *** phenomenon may indicate that different lymphoid organs may have their unique functions during *** findings provide a better understanding of the basic immunology of bacterial infection,which may provide valuable insights for the improvement of pertussis vaccine design in the future.

关键词： pertussis organs microarray

The Laughter of Ticklishness Is a Darwinian Feature Related to Empathy in Both Genders: Self-Esteem in Men and Sexism in Women

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Medical Psychology 2014年第1期3卷 18-23页

作者： Verónica Juárez-Ramos Elvira Salazar-López María ángeles Rodríguez Artacho K. Chmielowiec A. Riquelme J. Fernández-Gómez A. I. Fernández-ramirez A. Vicente de Haro A. Miranda M. Caballero B. Machado antonio González Hernández Emilio Gómez Milán Departamento de Psicología Experimental Universidad de Granada Granada Spain

The theory of false alarm for laughter could explain the involuntary laugh when someone is tickled. To put this hypothesis to the test, we handed out a questionnaire (180 items) with two hundred university students. Our main results are: In women who like being tickled, we discover components related to pleasure, erotism, feeling of affection, arousal, uncontrollability, domination, sexism and Darwinian (golden ratio) and psychological traits (empathy, low schizotypy and external locus of control) that are not present in the laughter at a stumble. The relation of both types of laughter with sense of humor is also differential. In men who like being tickled, we discover components related to masturbation, sexual fantasies, erotism, arousal, domination, sexist humour and Darwinian (square chin, feeling of masculinity) and psychological traits (empathic stress, low schizotypy, external locus of control and overall self-esteem). The relationship between being tickled and self-esteem shows a double aspect in men: It is positive in men who like being tickled and negative in men who do not like being tickled. For women there is not a relationship between self-esteem and tickling. Our conclusion is that laughter of ticklishness is a Darwinian feature related to empathy.

关键词： Tickling Gender Empathy Self-Esteem False Alarm