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Journal of Agricultural Science and technology(B) 2012年第7期2卷 750-757页

作者： Shoil Greenberg jaime Alejandro mamoudou Setamou Beneficial Insect Research Unit Kika de la Garza Subtropical Agricultural Research Center Agricultural Research ServiceUnited States Department of Agriculture Weslaeo Texas 78596 USA Department of Entomology Texas A&M University-Kingsville Citrus Center Weslaco Texas 78596 USA

this article combines both a review of the literature and original data from our research. the comparative efficacy of Bacillus thuringiensis （Berliner） traits Bollgard, Bollgard II, WideStrike, and non-Bt expressing cotton, Gossypium hirsutum L., for control of the noctuid complex of bollworm, Helicoverpa zea （Boddie）; fall armyworm, Spodopterafrugiperda （J.E. Smith）; beet armyworm, Spodoptera exigua （Htibner）; and cabbage looper, trichoplusia ni （Hiibner）, were evaluated in the Lower Rio Grande Valley of texas during 2005-2009. noctuid larval survival and damage to leaves on non-Bt cotton were 3.6-fold greater than on Bollgard II or WideStrike cotton and 1.5-fold greater than on cotton varieties with the Bollgard trait. transgenic cotton has reduced the need for conventional insecticides with benefits to human health and the environment. the revenue differences between Bt and conventional cotton for last four years in LRGV of texas was 214.35/ha and profit about 94.95/ha. We also analyzed cotton noctuid losses between Bt and conventionally grown cotton in the USA summary of all states and texas summary of all regions.

关键词： Bacillus thuringiensis (Bt) traits and non-Bt cotton noctuid control conventional insecticides revenue and profit.

Solvent- and Catalyst-Free microwave-Assisted Decarboxylation of malonic Acid Derivatives

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Green and Sustainable Chemistry 2017年第4期7卷 270-280页

作者： Fanny Araceli Cabrera-Rivera Luis Gabriel Hernández-Vázquez Patricia Flores-Sánchez maria Durán-Galván jaime Escalante the Center of Chemical Research UAEM Cuernavaca México SIGnA Civac S. A. de C. V. Jiutepec México

It has been found that microwave assisted decarboxylation of malonic acid derivatives can be achieved under solvent-free and catalyst free conditions. this new method produces the corresponding carboxylic acid in a pure manner and with a high yield in a very short reaction time: 3 - 10 min. In general terms, the condition under which this reaction is carried out accelerates the decarboxylation significantly of a series of disubstituted malonic acid derivatives, and makes this new process efficient, easy and environmentally friendly.

关键词： microwave Decarboxylation malonic Acid Derivatives Solvent-Free Catalyst-Free Green Chemistry

“Quito municipal schools” cohort study: Baseline results

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Open Journal of Epidemiology 2012年第3期2卷 70-74页

作者： natalia Romero-Sandoval Virginia Ruiz Juan Quizanga Ricardo Recalde Efrén Anchali jaime Falconí Oscar Flores miguel martín Instituto Superior de Postgrado Facultad de Ciencias Médicas Universidad Central del Ecuador Quito Ecuador Grupos de Investigación de América y Africa Latinas (GRAAL) Barcelona Espana and Quito Ecuador Consultora de UnICEF Quito Ecuador municipio del Distrito metropolitano de Quito Quito Ecuador Unidad de Bioestadística Facultad de Medicina Universidad Autónoma de Barcelona Cerdanyola del Vallès Spain

the lack of population-level data on growth and development of children and adolescents in Ecuador, and the existence of previous data suggesting an alarming increase in the numbers of children presenting overweight or obesity justifies the present cohort study which includes all pupils of municipal schools of Quito aged 9 to 17 years. Follow-up will continue for a minimum of 7 years. this will allow determining the evolution of prevalence of these phenomena and their trends as well as other indices, both physiological and family-related customs, in order to plan appropriate preventive interventions. the present cross-sectional study includes 21 municipal schools, grouped into four health zones, each of which depends on a health centre, also municipal, and which are responsible for the health of pupils in these schools. Of the 6964 pupils studied, 18.7% suffer overweight and 7.9% obesity: 19.3% and 9.7% respectively in boys, compared to 18.2% and 5.4% in girls. the study also assesses family characteristics, degree of sedentarism and nutritional habits: 62.3% declared living in a nuclear family, and 60.5% declared their families to be in the “adolescent” life-cycle stage;91.9% of pupils were sedentary while 5.4% (CI95% 4.87 - 5.94) reported not eating breakfast every day.

关键词： Overweight and Obesity Equatorian School Children Sedentarism type of Family

Dichloro-Diphenyl-trichloroethane (DDt) and Endosulfan in Sediments of Sabancuy Lagoon, Campeche, mexico

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Open Journal of Ecology 2016年第1期6卷 22-31页

作者： miguel Angel Ramírez-Elías Atl Victor Córdova-Quiroz Julia Griselda Cerón-Bretón Rosa maría Cerón-Bretón jaime Rendón-von Osten Javier Hipólito Cortés-Simón Facultad de Química Universidad Autónoma del Carmen Ciudad del Carmen México Centro de Ecología Pesquerías y Oceanografía del Golfo de México (EPOMEX) Universidad Autónoma de Campeche Campeche México Secretaria de marina V Zona Naval Estación de Investigación Oceanográfica Cd del Carmen Campeche México

DDt and Endosulfan are persistent organic compounds which have been prohibited and their use has been limited in agricultural activities due to their toxicity, persistence and bioaccumulation potential. the use of DDt in fumigation campaigns against endemic diseases transmitted by vectors of malaria and dengue was prohibited in Carmen Island, Campeche, mexico since 1995. In the surroundings of Sabancuy Lagoon, many and diverse agricultural activities are carried out and it is a common practice to use organ-chlorine pesticides as endosulfan. In order to know the levels of these compounds in this area, a sediment sampling campaign was carried out in ten sampling points randomly located within the Sabancuy Lagoon, Campeche and considering one reference sampling point located 2 km away from Sabancuy Lagoon within the mexican Gulf. three metabolites were identified in sediments samples belonging to DDt’s family: (4,4’-DDD;4,4’-DDE;4,4’- DDt) and Endosulfan’s family (Endosulfan I, Endosulfan II y Endosulfan sulfate). Higher concentrations in DDt’s family were found for 4,4’-DDD, followed by 4,4’-DDE and 4,4’-DDt. Endosulfan’s family, showed the following order for concentrations: Endosulfan II > Endosulfan I > Endosulfan sulfate. mean concentration for S-DDt and S-Endosulfan in Sabancuy Lagoon sediments was twice higher than those found in other studies carried out in términos Lagoon, Campeche, mexico in 2002.

关键词： Organochlorine Pesticides Pollution Sabancuy Coastal Lagoons

析出型LaFe_(0.9)Ru_(0.1)O_(3)钙钛矿催化剂在丙烷催化氧化反应中的自活化现象

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Chinese Journal of Catalysis 2023年第11期54卷 250-264页

作者：王宇 jaime Gallego 汪炜 Phillip timmer 丁敏 Alexander Spriewald Luciano tim Weber Lorena Glatthaar 郭杨龙 Bernd m.Smarsly Herbert Over 华东理工大学化学与分子工程学院工业催化研究所绿色化工与工业催化全国重点实验室上海200237 尤斯图斯-李比希大学物理化学研究所吉森德国尤斯图斯-李比希大学材料研究中心吉森德国

负载型贵金属催化剂在能源转化和环境污染控制等领域有广泛应用.相对于采用传统方法制备负载型贵金属催化剂,还原析出策略在控制贵金属的粒径,增强贵金属与载体相互作用方面具有独特的优势.但是在高温还原气氛下,贵金属析出的同时往往... 详细信息

负载型贵金属催化剂在能源转化和环境污染控制等领域有广泛应用.相对于采用传统方法制备负载型贵金属催化剂,还原析出策略在控制贵金属的粒径,增强贵金属与载体相互作用方面具有独特的优势.但是在高温还原气氛下,贵金属析出的同时往往伴随着母体结构中其它元素的析出,这会对催化剂的性能产生较大影响.因此,理解催化剂在还原气氛下以及后续反应条件下的结构演变,对于催化剂的设计及制备具有重要意义.本文通过800℃还原Ru掺杂的LaFe_(0.9)Ru_(0.1)O_(3)(LFRO)钙钛矿前驱体制备了贵金属析出的LFRO催化剂(LFRO800R),并用于丙烷催化氧化反应.活性测试结果表明,析出Ru催化剂的丙烷氧化性能远远低于原始的LFRO.当第一次反应结束,催化剂床层温度降至室温后再次评价其性能,LFRO 800R催化剂会发生“自活化”现象,在210℃下催化丙烷反应速率达到了22.3 molCO_(2)·h^(-1)·kgcat^(-1),是该温度下贵金属未析出LFRO催化剂的5倍,反应10 h后仍表现出较高的稳定性.为进一步研究LFRO800R在丙烷氧化反应中发生“自活化”的原因,在不同温度对LFRO 800R进行氧化处理,发现经过400℃氧化后得到的LFRO800R400O表现出最佳的丙烷催化活性.采用高分辨透射电镜、能量散射谱、漫反射红外傅立叶变换光谱、扫描电镜、X射线衍射、Raman光谱和X射线光电子能谱等方法对催化剂进行了表征,结果表明,经过800℃还原预处理,伴随着Ru从LFRO钙钛矿结构的体相中析出到表面,钙钛矿A位元素La也会析出并在RuFe(Ru占据主导)颗粒表面形成一层LaO_(x)覆盖层,阻碍了反应物分子在活性位点Ru上的吸附与活化,导致LFRO 800R在丙烷完全氧化反应中的低温区间表现出失活的现象.而在400℃的氧化气氛处理下,该LaO_(x)包裹层会从析出颗粒的表面完全去除,伴随着少部分界面处的Ru重新进入钙钛矿结构,大量有活性的Ru物种被暴露出来,因此催化剂表现出较好的丙烷催化氧化性能.活化后的LFRO800R400O催化剂中Ru的平均粒径为12 nm,远远小于负载型Ru/LFO800R400O催化剂的34 nm,说明还原析出策略在控制贵金属粒径方面有优势.综上,本文揭示了还原析出策略制备的Ru基钙钛矿催化剂的失活原因以及后续的氧化气氛中“自活化”的原因,为理性设计与制备高效的析出型贵金属催化剂提供了借鉴.

关键词： LaFe_(0.9)Ru_(0.1)O_(3)钙钛矿溶出氧化还原预处理 RuO_(2) 丙烷完全催化氧化

near-UV light assisted green reduction of graphene oxide films through l-ascorbic acid

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International Journal of Smart and nano materials 2021年第1期12卷 20-35页

作者： jaime Regis Sebastian Vargas Andrea Irigoyen Elsa Bramasco-Rivera Jose L.Bañuelos Luis C.Delfin Anabel Renteria Ulises martinez tommy RockwardYirong Lin Department of mechanical Engineering The University of Texas at El PasoEl PasoTX USA W.m.Keck Center for 3D Innovation the University of Texas at El PasoEl PasoTX USA Department of Physics The University of Texas at El PasoEl PasoTX USA materials Physics and Applications Los Alamos National LaboratoryLos AlamosNM USA Department of mechanical Engineering the University of texas At El Paso 500 W.University Ave.El Paso TX 79968United States

Recent studies have highlighted the effects of various stimuli on the chemical reduction of graphene oxide(GO)through green reductant L-ascorbic acid(L-AA);however,the combination of near ultraviolet(nUV)light to increase the reduction rate has yet to be thoroughly *** this study,drop-casted GO films were subjected to chemical reduction through L-AA with various levels of exposure under 405 nm nUV *** structure and uniformity of GO stackings that form the film were characterized through scanning electron microscopy(SEm)and wide-angle x-ray scattering(WAXS).Additionally,WAXS was used to track the removal of oxygen-containing functional groups along with Fourier-transform infrared(Ft-IR)spectroscopy and x-ray photoelectron spectroscopy(XPS)as a function of L-AA and nUV light exposure *** results demonstrated that the interaction between L-AA and nUV exposure has a significant effect on the reduction of ***,the results that yielded the highest reduction(C-C bond concentration of 60.7%)were the longest L-AA and nUV light exposure times(48 hours and 3 hours,respectively).this report provides a study on the effects of nUV on the green reduction of GO films through L-AA with potential application in solar energy and chemical sensing applications.

关键词： Graphene Oxide Films Green Reduction near Ultraviolet Light L-Ascorbic Acid Wide-Angle X-Ray Scattering

Ethical Principles Underlying the Assessment of Indirect Losses Due to Earthquakes

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Open Journal of Civil Engineering 2021年第2期11卷 179-199页

作者： jaime García-Pérez Eric García-López Instituo de Ingeniería Ingeniería EstructuralEdif 2 Universidad Nacional Autónoma de México Ciudad Universitaria Coyoacán CDMX México national Institute of Criminal Sciences Magisterio Nacional 113 Tlalpan CDMX México

the reliability optimization process in earthquake engineering requires that the expected present value of the total cost is minimized, including the initial cost as well as the damage costs caused by earthquakes, which include indirect costs. One of these costs is concerned with how much society is willing to invest for preserving human life. Ethical principles, on which to base the assessment of this cost, are presented and discussed in this work. Individual and social values are analyzed. Finally, an optimal seismic design coefficient with the results obtained is calculated for a site with low seismicity.

关键词： Reliabilities Utility Indirect Losses Decision-making Seismic Coefficients

Sociomoral Reasoning in Children With Respect to Exclusion and Inclusion Relationships

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Psychology Research 2013年第12期3卷 719-736页

作者： jaime Yanez-Canal ElfriedeB illmann-mahecha Yohana Andrea mojica m6jica Adriana Perdomo Universidad nacional de Colombia Bogotfi Colombia Leibniz University ofHanover HannoverGermany Universidad Santo tomas de Aquino Bogota Colombia Pontificia Universidad Javeriana BogotaColombia

the goal of this study is the analysis of judgments by children and adolescents with regard to inclusion and exclusion in its moral, personal, and social senses. Interviews were conducted with 96 Colombian children and adolescents of diverse social origins and of different age groups (5, 9, 13, and 17 years old). the interviews focused on three types of situations in which peers were excluded from group activities. the qualitative analyses show that children and adolescents gradually gain complexity in their descriptions of situations, and their judgments become more flexible, differentiated, and integrated. Different models of moral development are discussed, and in conclusion we propose that moral development can be best understood as a process of increasing complexity and of differentiation-integration of domains.

关键词：儿童社会推理青少年感官分析哥伦比亚道德年龄组

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Foreword

Foreword

Fractal Cracks Propagation in Aluminum

第三届风险分析与危机反应国际学术研讨会

作者： jaime Ortiz Steve Sears

＜正＞this volume collects the papers presented at the 3rd International Conference on Risk Analysis and Crisis Response （RACR-2011） held at texas A＆m International University in Laredo, texas on may 22–25, 2011. ...

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modeling and numerical Simulation of material Science 2013年第3期3卷 23-32页

作者： Francisco Casanova del Angel jaime Retama Velasco IInGEn Universidad Nacional Autónoma de México Mexico City Mexico SEPI ESIA Instituto Politécnico Nacional Mexico City Mexico

the theory of the fractal structure characterizing propagation of a crack through identification of its generator is presented. It’s generating fractal, the peculiarities of its construction and the way to measure its segments are defined, and a theorem on the inverse scale property of such and other of the axial symmetry property of the fractal generator are presented and demonstrated. the theory is applied on 6061-t6 aluminum samples, using SEnB probes. Direction of crack propagation and its fractal dimension are calculated numerically. Results obtained from modeling the direction of crack propagation through mechanics of elastic linear fracture and the one proposed here, called geometrical fractal fracture, are compared, thus developing the mirror case.

关键词： Geometrical Fractal Fracture Crack Propagation Aluminum Stress Intensity Factor Fractal Dimension