Resultados de búsqueda - ((asturias OR (criterias OR arteria)) OR ((estribos OR estrato) OR (estrictoss OR restrictions)))*

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    Thermomechanical Performance of fr-4 Laminates in the Manufacturing Process of Printed Circuit Boards. por Rodríguez Vázquez, Carlos Alfonso

    Publicado 2016
    “…To join them, a solder paste of tin, silver and copper alloy (Sn-Ag-Cu) is applied on the PCB surface; then the PCB is processed into a reflow oven at temperature range of 24oC-250oC allowing the solder paste to flow and join the electronic components with the PCB, an operation called “reflow process”. In 2006 the Restriction of Hazardous Substances (RoHS) prohibited the use of lead (Pb) in solder paste, which has a melting temperature around 180oC, whereas lead-free solder pastes have a melting point around 230oC, 30oC-40oC higher than Pb solder paste, this has generated PCB thermo mechanical problems due to the temperature increase at which the material is exposed. …”
    Enlace del recurso
    Tesis
  3. 503

    Thermomechanical Performance of fr-4 Laminates in the Manufacturing Process of Printed Circuit Boards. por Rodríguez Vázquez, Carlos Alfonso

    Publicado 2016
    “…To join them, a solder paste of tin, silver and copper alloy (Sn-Ag-Cu) is applied on the PCB surface; then the PCB is processed into a reflow oven at temperature range of 24oC-250oC allowing the solder paste to flow and join the electronic components with the PCB, an operation called “reflow process”. In 2006 the Restriction of Hazardous Substances (RoHS) prohibited the use of lead (Pb) in solder paste, which has a melting temperature around 180oC, whereas lead-free solder pastes have a melting point around 230oC, 30oC-40oC higher than Pb solder paste, this has generated PCB thermo mechanical problems due to the temperature increase at which the material is exposed. …”
    Enlace del recurso
    Tesis
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    Parámetros bio-económicos de la producción intensiva de la carne de bovino en México por Callejas Juárez, Nicolás, Rebollar Rebollar, Samuel, Ortega Gutiérrez, Juan Ángel, Domínguez Viveros, Joel

    Publicado 2017
    “…ABSTRACT The objective of this research was to evaluate the productivity of beef in confinement in Mexico, through criteria of efficiency, effectiveness, quality and economy, in five entities (Nuevo Leon, Tamaulipas, Coahuila, Sonora and Baja California); considering five scales of production (3,000, 5,000, 6,000, 7,000 and 7,500 bovines completed per cycle). …”
    Enlace del recurso
    Artículo
  11. 511

    Knowledge and use of edible mushrooms in two municipalities of the Sierra Tarahumara, Chihuahua, Mexico por Quiñónez Martínez, Miroslava, Ruan Soto, Felipe, Aguilar Moreno, Ivonne Estela, Garza Ocañas, Fortunato, Lebgue Keleng, Toutcha, Lavín Murcio, Pablo Antonio, Enríquez Anchondo, Irma Delia

    Publicado 2014
    “…Known fungi, local nomenclature, species consumed, preparation methods, appreciation of taste, forms of preservation, criteria for differentiating toxic and edible fungi, other uses, economic aspects, and traditional teaching were recorded. …”
    Enlace del recurso
    Artículo
  12. 512

    Effect of online hemodiafiltration compared with hemodialysis on quality of life in patients with ESRD: A systematic review and meta-analysis of randomized trials por Parmenter, Belinda, Suwabe, Tatsuya, Barrera Flores, Francisco Jesús, Rodríguez Gutiérrez, René, Ubara, Yoshifumi, Takaichi, Kenmei

    Publicado 2018
    “…Results Six moderate quality RCTs met the inclusion criteria. Meta-analysis of 4 RCTs including a total of 1,209 patients showed that OL-HDF was associated with a lower yet non-significant score of PCS: MD (mean difference) -0.77 (95% CI -1.94 to 0.41, p = 0.20), and MCS: MD -1.25 (95% CI -3.10 to 0.59, p = 0.18); indicating a poorer QoL in patients on OL-HDF. …”
    Enlace del recurso
    Artículo
  13. 513

    SGLT2 inhibitors as add on therapy in type 2 diabetes: a real world study por Tamez Pérez, Héctor Eloy, Delgadillo Esteban, Enrique, Soni Duque, David, Hernández Coria, Mayra Ivonne, Tamez Peña, Alejandra Lorena

    Publicado 2017
    “…Methods: A retrospective, observational study. Inclusion criteria for patients were a previous diagnosis of type 2 diabetes mellitus, age > 18 years, patients receiving either dapagliflozin 10 mg and/or canagliflozin 300 mg. …”
    Enlace del recurso
    Artículo
  14. 514

    Post-Ablation Cavity Evaluation: A Prospective Multicenter Observational Clinical Study to Evaluate Hysteroscopic Access to the Uterine Cavity 4 Years after Water Vapor Endometrial... por Johns, D. Alan, Garza Leal, José Gerardo, Diamond, Michael P., Harris, Micah

    Publicado 2020
    “…The video of the hysteroscopic examination was analyzed by an independent reviewer, who assessed uterine cavity access and visualization of the cornua and tubal ostia as well as characterized adhesions on the basis of the criteria by March et al. An independent reviewer also subjectively assessed whether Pipelle endometrial biopsy or intrauterine device placement would be feasible. …”
    Enlace del recurso
    Artículo
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    Factor pronóstico de las calcificaciones arteriales intracerebrales y su severidad en el estado funcional de pacientes con diagnóstico de evento cerebrovascular isquémico. por Ramírez Vázquez, José Antonio

    Publicado 2024
    “…Se incluyeron pacientes mayores de 18 años con tomografías adecuadas para evaluar calcificaciones del sifón carotídeo y arterias vertebrobasilares con densidad ≥130 UH. Se excluyeron casos hemorrágicos y estudios de baja calidad. …”
    Enlace del recurso
    Tesis
  19. 519

    Factor pronóstico de las calcificaciones arteriales intracerebrales y su severidad en el estado funcional de pacientes con diagnóstico de evento cerebrovascular isquémico. por Ramírez Vázquez, José Antonio

    Publicado 2024
    “…Se incluyeron pacientes mayores de 18 años con tomografías adecuadas para evaluar calcificaciones del sifón carotídeo y arterias vertebrobasilares con densidad ≥130 UH. Se excluyeron casos hemorrágicos y estudios de baja calidad. …”
    Enlace del recurso
    Tesis
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