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Magnetocaloric effect in ErNi2 melt-spun ribbons

Journal of Rare Earths 2020年第6期38卷 612-616页

作者： J.L.Sanchez Llamazares P.Ibarra-Gaytan C.F.Sanchez-Valdes D.Rlos-Jara P.Alvarez-alonso Instituto Potosino de Investigacion Ciendfica y Tecnoldgica A.C. Camino a la Presa San Jose 2055Col.Lomas 4San Luis Potosi.S.LP.78216Mexico CPM-TIP University Pavol Jozef SafarikPark Angelinum 9.04154 KosiceSlovakia Division Multidisciplinaria Ciudad UniversitariaUniversidad Aurdnoma de Ciudad Juarez(UACJ)Calle Jose de Jesus Macias Delgado#18100Ciudad Juarez 32579Chihuahua.Mexico Departamento de Fisica Universidad de OviedoCalvo Sotelo s/n33007 OviedoSpain

ErNi2 ribbons were produced by rapid solidification using the melt spinning technique.Their structural,magnetic and magnetocaloric properties in the as-solidified state were studied by X-ray diffraction,scanning electron microscopy,magnetization and specific heat measurements.Samples are single phase with the MgCu2-type crystal structure,a Curie temperature TC of 6.8 K and a saturation magnetization at2 K and 5 T of 124.0 A·m2/kg.For a magnetic field change μ0△H of 5 T(2 T) ribbons show a maximum magnetic entropy change |△SMpeak| of 24.1(16.9) J/(kg·K),and an adiabatic temperature change △Tadmax of8.1(4.4) K;this is similar to the previously reported literature for bulk alloys that were processed through conventional melting techniques followed by prolonged thermal annealing.In addition,the samples also show slightly wider △SM(T) curves with respect to bulk alloys leading to a larger refrigerant capacity.

关键词： ErNi2 Laves phase Melt-spun ribbons Magnetic entropy change Adiabatic temperature change Rare Earths

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Non-Linear Analysis of Energy Absorption Systems under Impact Loads through FEM

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Journal of Mechanics Engineering and Automation 2012年第8期2卷 487-494页

作者： Elias Rigoberto Ledesma-Orozco jose Angel Diosdado-De la Pena Gerardo Israel Pdrez-Soto alonso Salazar-Garibay Juan Francisco Reveles-Arredondo Gilberto Villalobos-Llamas Pedro Duran-Resendiz Department of Mechanical Engineering Universidad de Guanajuato (DICIS) Salamanca M~xico

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Foliar Analysis as an Estimate on the Nutritional State of Conilon Coffee Plantations on Cambisoils

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Journal of Life Sciences 2014年第2期8卷 181-187页

作者： Alberto Perez Diaz Emesto Castaneda Hidalgo Salvador Lozano Trejo Carlos Alberto Bustamante Gonzailez Ramon Antonio Rivera Espinosa Geraldo Rodriguez Ortiz Gloria martha martin alonso Cerelino RoblesPerez Guillermo Acosta Coutin Alberto fernandez Turro Centro de Estudios de Cafe y Cacao Universidad de Guantanamo Guantanamo 95300 Cuba Instituto Tecnologico del Valle de Oaxaca Ex Hacienda de Nazareno Xoxocotlan 712320 Mexico Instituto de Investigaciones Agroforestales UCTB-Tercer Frente Santiago de Cuba 92700 Cuba Instituto Nacional de Ciencias Agricolas San Jose de las Lajas Mayabeque 32700 Cuba Universidad de Ciencias Pedagogicas "Raul Gomez Garcla " Guantanamo 95100 Cuba

The objective of this paper relies on the establishment of the sampling moment and the nutritional state of the species Conilon coffee (Coffea canephora) cultivated in Cambisoils. The effect of different rates of nitrogen fertilization was also studied in the leaves concentrations of N, at randomized complete block designs (N 0 = 0; N 1 = 50; N 2 = 100; N 3 = 150 and N 4 = 200 kg?ha -1 of N) in presence of P (40 kg?ha -1 of P 2 O 5 ) and K (160 kg?ha -1 of K 2 O), with four replicates. The samples were carried out in the months of march (flower blossoming stage), June (fruits growing stage), September (grain development) and December (maturation) in all treatments. Foliar analysis carried out in the month of June (fruits growing stage) for the purpose of establishing critical nutrient range values for N, settling down approaches of interpretation of the same one for the Conilon coffee plantations on Cambisoils. The biggest percentages in the yields are obtained with leaves containing N between 2.80% and 3.10%, a value below 2.80% N which they associated with indicative percentages of stable maximum yield that did not surpass the limits of the adequate nutrients supply.

关键词：咖啡树种植园营养状况叶面果实生长期评估随机区组设计营养状态

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西班牙Genoves公园观景台和防御建筑

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建筑技艺 2015年第7期 15-15页

作者： jose Luis Bezos alonso

建造地点:西班牙,加的斯该项目旨在保护Genoves公园免受恶劣天气和海风的影响,使其与Santa Barbara滨海大道建立起相互联系。项目所在地是用了很长时间的停车场,拥有庞大的规模和作为城市观海台的地理位置。建筑的设计灵感来自Bansky的... 详细信息

建造地点:西班牙,加的斯该项目旨在保护Genoves公园免受恶劣天气和海风的影响,使其与Santa Barbara滨海大道建立起相互联系。项目所在地是用了很长时间的停车场,拥有庞大的规模和作为城市观海台的地理位置。建筑的设计灵感来自Bansky的知名涂鸦,将其转变成公园的扩建部分,同时也作为拥有景观带、运动区域和游乐场的开放场地。新建筑共有5个新的通道,建筑屋顶

关键词：公园园林建筑 Genoves

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Timely reperfusion for ST-segment elevation myocardial infarction:Effect of direct transfer to primary angioplasty on time delays and clinical outcomes

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World Journal of Cardiology 2014年第6期6卷 424-433页

作者： Rodrigo Estévez-Loureiro ángela López-Sainz Armo Pérez de Prado Carlos Cuellas Ramón Calvio Santos Norberto alonso-Orcajo Jorge Salgado Fernández jose Manuel Vázquez-Rodríguez maria López-Benito Felipe Fernández-Vázquez Division of Cardiology Complejo Asistencial Universitario de León (CAULE)24071 LeonSpain Division of Cardiology Complejo Hospitalario Universitario A Coru?a (CHUAC)15006 La Coru?aSpain

Primary percutaneous coronary intervention(PPCI) is the preferred reperfusion therapy for patients presenting with ST-segment elevation myocardial infarction(STEMI) when it can be performed expeditiously and by experienced operators. In spite of excellent clinical results this technique is associated with longer delays than thrombolysis and this fact may nullify the benefit of selecting this therapeutic option. Several strategies have been proposed to decrease the temporal delays to deliver PPCI. Among them,prehospital diagnosis and direct transfer to the cath lab,by-passing the emergency department of hospitals,has emerged as anattractive way of diminishing delays. The purpose of this review is to address the effect of direct transfer on time delays and clinical events of patients with STEMI treated by PPCI.

关键词：主要 angioplasty 直接转圣片断举起心肌的梗塞网络主要经皮的冠的干预心肌的梗塞

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