Evolution of geometrical design parameters for cast in place bridges built using the cantilever method

Cast-in-place bridges built using the cantilever method have been studied and evaluated. Also the theories used for their pre-dimensioning from 1978 to the present were compared, like the evolution of its design. The data were collected and obtained of transverse and longitudinal sections of 124 cast-in-place bridges built using the cantilever method in 29 countries and were subsequently evaluated. These 124 bridges are condensed into three groups by chronology, free span and by countries. These data are processed statistically and compared with classical values used in design. The analysis of results allows for parametric graphs associated with the design conditions. The conclusions shows how varying the geometric design parameters in time and how they will obtain optimal values that allows to design and build safer and economic bridges Se estudiaron puentes construidos con voladizos sucesivos in situ, en donde se evalúan y se comparan las teorías utilizadas para su predimensionamiento desde el 1978 hasta la actualidad, así como la evolución de su diseño. Se recopilaron los datos obtenidos de las secciones transversales y longitudinales de 124 puentes construidos en voladizos sucesivos in situ en 29 países y porteriormente fueron evaluados. Estos 124 puentes son condensados en tres grupos: por cronología, por luz libre y por países. Estos datos  son tratados estadísticamente y se comparan con los valores clásicos empleados en el diseño. El análisis de resultados permite obtener gráficas paramétricas asociadas a las condiciones de diseño. Las conclusiones muestran cómo varían los parámetros geométricos de diseño en el tiempo y como se van obteniendo valores óptimos que permiten diseñar y construir puentes más seguros y económicos

Effect of ground-cover management on predatory mites (Acari: Phytoseiidae) in a Mediterranean vineyard

Most predatory mites belong to the family Phytoseiidae (Acari). Throughout the world, phytoseiids are involved in the biological control of phytophagous mites in vineyards. Conservative strategies, including cover-vegetation management, are essential to achieve environmentally friendly viticulture. The abundance and diversity of phytoseiid mites in the grapevine canopy and the vegetal ground cover of a Mediterranean vineyard were surveyed by weekly samplings, from early May until the end of September for two years (2016 and 2017). Three types of soil management without herbicide application were analysed and referred to as "Tillage", "Spontaneous Cover", and "Flower-driven Cover" treatments. Six phytoseiid species were collected on the grapevine canopy, with Typhlodromus pyri being the dominant species (99.5 %). Five phytoseiid species were recorded in the ground cover, with Typhlodromus and Neoseiulus as the major genera. The Flower-driven Cover treatment showed the highest abundance of phytoseiids in the grapevine canopy. However, both species richness and abundance of phytoseiid mites on the ground-cover vegetation were highest in the Spontaneous Cover treatment. These observations suggest that improving vegetation cover would promote both the abundance and diversity of phytoseiid mites in vineyards because the greater supply of pollen would enhance their survival. Therefore, the use of cover crops in vineyards represents a means of improving vineyard ecosystems by conservative biological control

Clinical and Laboratory Features in Anti-NF155 Autoimmune Nodopathy

BACKGROUND AND OBJECTIVES: To study the clinical and laboratory features of antineurofascin-155 (NF155)-positive autoimmune nodopathy (AN). METHODS: Patients with anti-NF155 antibodies detected on routine immunologic testing were included. Clinical characteristics, treatment response, and functional scales (modified Rankin Scale [mRS] and Inflammatory Rasch-built Overall Disability Scale [I-RODS]) were retrospectively collected at baseline and at the follow-up. Autoantibody and neurofilament light (NfL) chain levels were analyzed at baseline and at the follow-up. RESULTS: Forty NF155+ patients with AN were included. Mean age at onset was 42.4 years. Patients presented with a progressive (75%), sensory motor (87.5%), and symmetric distal-predominant weakness in upper (97.2%) and lower extremities (94.5%), with tremor and ataxia (75%). Patients received a median of 3 (2-4) different treatments in 46 months of median follow-up. Response to IV immunoglobulin (86.8%) or steroids (72.2%) was poor in most patients, whereas 77.3% responded to rituximab. HLA-DRB1*15 was detected in 91.3% of patients. IgG4 anti-NF155 antibodies were predominant in all patients; anti-NF155 titers correlated with mRS within the same patient (r = 0.41, p = 0.004). Serum NfL (sNfL) levels were higher in anti-NF155+ AN than in healthy controls (36.47 vs 7.56 pg/mL, p < 0.001) and correlated with anti-NF155 titers (r = 0.43, p = 0.001), with I-RODS at baseline (r = -0.88, p < 0.001) and with maximum I-RODS achieved (r = -0.58, p = 0.01). Anti-NF155 titers and sNfL levels decreased in all rituximab-treated patients. DISCUSSION: Anti-NF155 AN presents a distinct clinical profile and good response to rituximab. Autoantibody titers and sNfL are useful to monitor disease status in these patients. The use of untagged-NF155 plasmids minimizes the detection of false anti-NF155+ cases. CLASSIFICATION OF EVIDENCE: This study provides Class IV evidence that anti-NF155 antibodies associate with a specific phenotype and response to rituximab

Impact of COVID-19 on cardiovascular testing in the United States versus the rest of the world

Objectives: This study sought to quantify and compare the decline in volumes of cardiovascular procedures between the United States and non-US institutions during the early phase of the coronavirus disease-2019 (COVID-19) pandemic. Background: The COVID-19 pandemic has disrupted the care of many non-COVID-19 illnesses. Reductions in diagnostic cardiovascular testing around the world have led to concerns over the implications of reduced testing for cardiovascular disease (CVD) morbidity and mortality. Methods: Data were submitted to the INCAPS-COVID (International Atomic Energy Agency Non-Invasive Cardiology Protocols Study of COVID-19), a multinational registry comprising 909 institutions in 108 countries (including 155 facilities in 40 U.S. states), assessing the impact of the COVID-19 pandemic on volumes of diagnostic cardiovascular procedures. Data were obtained for April 2020 and compared with volumes of baseline procedures from March 2019. We compared laboratory characteristics, practices, and procedure volumes between U.S. and non-U.S. facilities and between U.S. geographic regions and identified factors associated with volume reduction in the United States. Results: Reductions in the volumes of procedures in the United States were similar to those in non-U.S. facilities (68% vs. 63%, respectively; p = 0.237), although U.S. facilities reported greater reductions in invasive coronary angiography (69% vs. 53%, respectively; p < 0.001). Significantly more U.S. facilities reported increased use of telehealth and patient screening measures than non-U.S. facilities, such as temperature checks, symptom screenings, and COVID-19 testing. Reductions in volumes of procedures differed between U.S. regions, with larger declines observed in the Northeast (76%) and Midwest (74%) than in the South (62%) and West (44%). Prevalence of COVID-19, staff redeployments, outpatient centers, and urban centers were associated with greater reductions in volume in U.S. facilities in a multivariable analysis. Conclusions: We observed marked reductions in U.S. cardiovascular testing in the early phase of the pandemic and significant variability between U.S. regions. The association between reductions of volumes and COVID-19 prevalence in the United States highlighted the need for proactive efforts to maintain access to cardiovascular testing in areas most affected by outbreaks of COVID-19 infection

Caracterización de la investigación, el desarrollo tecnológico y la innovación en el sector productivo de la región fronteriza colombo venezolana

En el libro se presenta la recopilación de proyectos de Investigación e Innovación tecnológica como resultado del desarrollo de actividades investigativas, donde se involucran grupos de investigación y semilleros, instructores investigadores, docentes universitarios, administrativos, aprendices, estudiantes universitarios y empresarios del ámbito regional, nacional e internacional, quienes motivados por su espíritu emprendedor e innovador le apostaron a involucrarse en proyectos desde las áreas de automatización, electrónica y telecomunicaciones, gestión de hábitat , Diseño e implementación de soluciones en TIC, Gestión del negocio emprendimiento y empresarismo, innovación educativa y diseño de vestuario.The book presents the compilation of Research and Technological Innovation projects as a result of the development of research activities, where research groups and seedbeds, research instructors, university teachers, administrative staff, apprentices, university students and entrepreneurs from the regional, national level are involved. and international, who, motivated by his entrepreneurial and innovative spirit, bet him to get involved in projects from the areas of automation, electronics and telecommunications, habitat management, Design and implementation of ICT solutions, Business management, entrepreneurship and entrepreneurship, educational innovation and design. wardrobe.Caracterización de la investigación, el desarrollo tecnológico y la innovación en el sector productivo de la región fronteriza colombo venezolana -- Modelo de un sistema hidráulico controlado por redes neuronales – Sistema de gestión y monitoreo de consumo de servicios domiciliarios fomentando la “sostenibilidad inductiva” -- Cálculo de los parámetros hidráulicos y mecánicos de un prototipo robótico para la fumigación de cultivos de media y baja altura -- Manipulador robótico en el sistema integrado por computadora plataforma Cim-C -- Planificación multinivel y conflictos generados por la transformación de los espacios agrarios en el sector periurbano fronterizo de los trapiches, villa del rosario. -- Herramienta tecnológica para la vinculación del aprendiz sena del programa de articulación media con el sector productivo de la ciudad de bucaramanga -- Global kids máquina de intercambio financiero Global Kids financial Exchange machine – Desarrollo de aplicación móvil para la enseñanza e instrucción del área de documentación y gestión administrativa -- Diseño de una aplicación informática on-line para optimizar la gestión de los procesos, tramites e informes de los materiales de formación del sena centro cies regional norte de santander -- creación sala hub de consultoría estratégica mipymes norte de santander -- Diseño recorrido virtual de gestión documental Regional Norte de Santander: SENA -- Factores de riesgo provocadas por el incremento de estrés en las empresas industriales mexicanas -- Logística de la comercialización del plátano procedente de los municipios buenavista, córdoba y pijao -- Sistema de información móvil integrador de procesos formativos del sena con la comunidad educativa -- Sistematización de la información contable y financiera de los proyectos de aula en la media técnica -- BANKIDS juego didáctico y financiero -- Causas que originan la mala ortografía en los aprendices de la red de gestión administrativa y servicios financieros -- Informe sobre la deserción de aprendices de gestión administrativa y servicios financieros -- uso de las ntic desde el semillero de investigación e innovación virtual e-innovacmm centro metalmecánicona207 página

Agro-Climatic factors required for the correct development of pineapple (Ananas comosus (L.) Merr.) cultivation

Objective: To compare the agro-climatic factors: soil, rainfall, sunshine duration (sun-hours) and temperature existing in the municipality of Tecomán, Colima, Mexico, to some optimum values, in order to determine the development of theMD2 pineapple (Ananas comosus (L.) Merr.) plantation crop.Design/Methodology/Approach: For the soil factors, texture and pH, data were obtained in laboratory to determine soil physical and reaction analyses. For temperature and rainfall, data were obtained from the Sistema Meteorológico Nacional (SMN), and to obtain the optimal values, different authors cited in the bibliography were considered.Results: the soil factor presented a sandy loam texture with a pH of 7.9. From January to June and from October to December, a monthly precipitation deficit (mm) in percentage was evidenced respect that required by pineapple cultivation; and a percentage of excess in monthly precipitation (mm), from July to September. For monthly sunshineduration, an excess between 200 and 300% of sun-hours was evidenced with respect to that required by pineapple. For minimum, maximum and average temperature, monthly variations were evidenced, but within acceptable ranges according to those determined for cultivation development.Limitations of the study/Implications: No scientific information was available regarding pineapple cultivation evaluated at the research area.Findings/Conclusions: It was determined that the evaluated pineapple plantation crop will be able to develop in theproduction area, by adjusting monthly precipitation deficit through an irrigation system and the excess of sunshineduration, through the use of a shade cloth

Evolution of geometrical design parameters for cast in place bridges built using the cantilever method

Cast-in-place bridges built using the cantilever method have been studied and evaluated. Also the theories used for their pre-dimensioning from 1978 to the present were compared, like the evolution of its design. The data were collected and obtained of transverse and longitudinal sections of 124 cast-in-place bridges built using the cantilever method in 29 countries and were subsequently evaluated. These 124 bridges are condensed into three groups by chronology, free span and by countries. These data are processed statistically and compared with classical values used in design. The analysis of results allows for parametric graphs associated with the design conditions. The conclusions shows how varying the geometric design parameters in time and how they will obtain optimal values that allows to design and build safer and economic bridge

Evolución de los parámetros geométricos de diseño en puentes construidos con voladizos sucesivos in situ

Cast-in-place bridges built using the cantilever method have been studied and evaluated. Also the theories used for their pre-dimensioning from 1978 to the present were compared, like the evolution of its design. The data were collected and obtained of transverse and longitudinal sections of 124 cast-in-place bridges built using the cantilever method in 29 countries and were subsequently evaluated. These 124 bridges are condensed into three groups by chronology, free span and by countries. These data are processed statistically and compared with classical values used in design. The analysis of results allows for parametric graphs associated with the design conditions. The conclusions shows how varying the geometric design parameters in time and how they will obtain optimal values that allows to design and build safer and economic bridges Se estudiaron puentes construidos con voladizos sucesivos in situ, en donde se evalúan y se comparan las teorías utilizadas para su predimensionamiento desde el 1978 hasta la actualidad, así como la evolución de su diseño. Se recopilaron los datos obtenidos de las secciones transversales y longitudinales de 124 puentes construidos en voladizos sucesivos in situ en 29 países y porteriormente fueron evaluados. Estos 124 puentes son condensados en tres grupos: por cronología, por luz libre y por países. Estos datos  son tratados estadísticamente y se comparan con los valores clásicos empleados en el diseño. El análisis de resultados permite obtener gráficas paramétricas asociadas a las condiciones de diseño. Las conclusiones muestran cómo varían los parámetros geométricos de diseño en el tiempo y como se van obteniendo valores óptimos que permiten diseñar y construir puentes más seguros y económicos