ANALISA PENGGUNAAN BAHAN BAKAR DENGAN ALAT PEMANAS MEMANFAATKAN GAS BUANG DAN UJI KADAR CO PADA MESIN DIESEL

The purpose of this research is to determine whether there is the influence of heating fuel for fuel consumption and the levels of CO gas. Object of this study is the Dongfeng S195 a 1 cylinder. In this research engine speed is set at 1134 rpm and fuel are tested as much as 500 ml, about the measurements per 100 ml. The results showed that consumption of fuel and levels of CO gas waste with the initial warm up fuel decreased compared with the fuel line without heating. After analysis of data related to the impact of fuel consumption and the content of the CO exhaust with the initial warm up. Consumption of fuel most economical is the temperature of 65,6oC, then followed by the temperature of 69,4oC, and last in the temperature of 72,4oC. The content of CO gas to the lowest on fuel with a temperature of 65,6oC and levels of CO 84 ppm, then followed by the temperature of 72,4oC with high levels of CO 85 ppm, and last in the temperature of 60,2oC with high levels of CO 86 ppm. Keyword : Machine, Fuel, and C

Aplicación de índices de tolerancia a la salinidad en plántulas de maíz

Los objetivos de este trabajo fueron: estudiar la aplicación de diferentes índices de tolerancia en caracteres de plántulas de maíz y evaluar su posible utilidad en la identificación de genotipos tolerantes a la salinidad. Se probaron 68 accesiones en dos ambientes (0 y 100m MClNa). Se midieron: largo de raíz, vástago y 3ª hoja y peso seco de raíz y de parte aérea. Se incluyeron 6 índices de tolerancia: índice de susceptibilidad al estrés (SSI), índice de tolerancia al estrés (STI), tolerancia al estrés (TOL), media geométrica de la productividad (GMP), productividad media (MP) e índice de estabilidad del rendimiento (YSI). Debido a la variación espacial relacionada con la concentración de sal en ambientes salinos, sería importante identificar genotipos estables frente a una gama amplia de suelos salinos. El biplot agrupó las accesiones, caracteres medidos en ambientes con y sin estrés e índices de tolerancia a sal, y demostró que los índices GMP, MP y STI fueron los que permitieron identificar los accesiones estables que se caracterizan por tener una alta expresión de estos caracteres en ambos ambientes. La aplicación del método de Componentes Principales (CP) identificó a los caracteres peso seco aéreo y largo de raíz como los de mayor contribución y ambos estuvieron asociados con dichos indices de tolerancia a salinidad. De esta manera, en este estudio las accesiones 1, 7, 30, 33, 43 y 45 fueron los más estables para los caracteres peso seco aéreo y largo de raíz. Entre ellos las accesiones 30 y 33 fueron superiores (pertenecientes a genotipos del Grupo A) porque mostraron los escores más altos sobre el eje CP1 pero sus aportes al CP2 fueron bastantes pequeños, para la mayoría de las variables.The aims of this research were: to study the application of different tolerance Indices in traits measured in maize seedlings and to assess their possible use in the identification of genotypes tolerant to salinity. Sixty eight accessions were tested in two environments (0 and 100mM NaCl). We recorded length for radicle, shoot and third leaf and dry weight for root and shoot. Six stress tolerance indices were included: stress susceptibility (SSI), stress tolerance index (STI), stress tolerance (TOL), geometric mean productivity (GMP), mean productivity (MP) and yield stability index (YSI. Saline environments show a great spatial variation in relation to the salt concentration, for this reason it would be important to identify genotypes with stable behavior in a variety of saline soils. The biplot method allowed clustering accessions, traits measured in stress and non stress environment and salt tolerance Indexes in a same graphic, and showed that GMP, MP and STI indexes were the ones who helped identify the high yielding (group A genotype) and stable accessions, characterized by a high expression of these characters in both environments. Principal Component method showed that shoot dry weight and root length had the highest contribution and both were associated with these above indices in salinity. Therefore, in this study the accessions: 1, 7, 30, 33, 43 and 45 had stable values for the traits root length and shoot dry weight. Within this group the 30 and 33 entries were superior (bellowing to Group A genotypes) because they had the highest PC1 scores but its PC2 scores were rather small for the most of the variables.Fil: Collado, Mónica B.. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales. Instituto Fitotécnico de "Santa Catalina"; ArgentinaFil: Aulicino, Mónica Beatriz. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales. Instituto Fitotécnico de "Santa Catalina"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Arturi, Miguel Jacinto. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales. Instituto Fitotécnico de "Santa Catalina"; ArgentinaFil: Molina, María del Carmen. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales. Instituto Fitotécnico de "Santa Catalina"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

Phenotypic diversity in Argentinian populations of Bromus catharticus (Poaceae): genetic and environmental components of quantitative traits

Genetic and environmental components were analysed in 32 Argentinian populations of Bromus catharticus. The research was based on 39 vegetative and reproductive characters. Constancy (rc) and heritability (h2) ratios were calculated. ANOVAS showed differences between populations for 14 traits, most of them reproductive. Total phenotypic variation was mostly due to the environmental component. Microfloral attributes showed the highest values of rc and h2. The traits average length of the spikelets (LS), average number of florets per spikelet (NFS), and lemma length (LL), which simultaneously reach rc values higher than 1 and h2 values higher than 0.60, could be considered useful in systematic studies. Leaf, stem, and some reproductive characters, linked to propagule production, had plastic responses. However, traits associated with size and shape of propagules and spikelets remained constant. Results suggest that a double strategy is operating: plasticity in some traits (to give greater adaptability), and constancy in other traits related to species stability that are of systematic significance.Facultad de Ciencias Agrarias y Forestale

Phenotypic diversity in Argentinian populations of Bromus catharticus (Poaceae): genetic and environmental components of quantitative traits

Genetic and environmental components were analysed in 32 Argentinian populations of Bromus catharticus. The research was based on 39 vegetative and reproductive characters. Constancy (rc) and heritability (h2) ratios were calculated. ANOVAS showed differences between populations for 14 traits, most of them reproductive. Total phenotypic variation was mostly due to the environmental component. Microfloral attributes showed the highest values of rc and h2. The traits average length of the spikelets (LS), average number of florets per spikelet (NFS), and lemma length (LL), which simultaneously reach rc values higher than 1 and h2 values higher than 0.60, could be considered useful in systematic studies. Leaf, stem, and some reproductive characters, linked to propagule production, had plastic responses. However, traits associated with size and shape of propagules and spikelets remained constant. Results suggest that a double strategy is operating: plasticity in some traits (to give greater adaptability), and constancy in other traits related to species stability that are of systematic significance.Facultad de Ciencias Agrarias y Forestale

Association between one-hour post-load plasma glucose levels and vascular stiffness in essential hypertension

Objectives: Pulse wave velocity (PWV) is a surrogate end-point for cardiovascular morbidity and mortality. A plasma glucose value $155 mg/dl for the 1-hour post-load plasma glucose during an oral glucose tolerance test (OGTT) is able to identify subjects with normal glucose tolerance (NGT) at high-risk for type-2 diabetes (T2D) and for subclinical organ damage. Thus, we addressed the question if 1-hour post-load plasma glucose levels, affects PWV and its central hemodynamic correlates, as augmentation pressure (AP) and augmentation index (AI). Methods: We enrolled 584 newly diagnosed hypertensives. All patients underwent OGTT and measurements of PWV, AP and AI. Insulin sensitivity was assessed by Matsuda-index. Results: Among participants, 424 were NGT and 160 had impaired glucose tolerance (IGT). Of 424 NGT, 278 had 1-h postload plasma glucose ,155 mg/dl (NGT,155) and 146 had 1-h post-load plasma glucose$155 mg/dl (NGT$155). NGT$155 had a worse insulin sensitivity and higher hs-CRP than NGT,155, similar to IGT subjects. In addition, NGT $155 in comparison with NGT,155 had higher central systolic blood pressure (134612 vs 131610 mmHg), as well as PWV (8.463.7 vs 6.761.7 m/s), AP (12.567.1 vs 9.865.7 mmHg) and AI (29.4611.9 vs 25.1612.4 regression analysis, 1-h post-load plasma glucose resulted the major determinant of all indices of vascular stiffness. Conclusion: Hypertensive NGT$155 subjects, compared with NGT,155, have higher PWV and its hemodynamic correlates that increase their cardiovascular risk profile

Emergencias y urgencias en Reumatología clínica

En la presente revisión se analizan los casos de Urgencias y Emergencias en Reumatología y Enfermedades Autoinmunes Sistémicas del adulto y juveniles; las mismas son situaciones que requieren asistencia médica inmediata. Además se mencionan las complicaciones agudas que surgen de las mismas (infección, desorden metabólico, insuficiencia de órgano) y las reacciones adversas que pueden surgir de los tratamientos efectuados. Se destacan las patologías por órgano o sistema y luego por síndrome o enfermedad. La revisión tiene la intención de ser de ayuda al médico joven para un rápido reconocimiento, diagnóstico y tratamiento de las patologías agudas y sus complicaciones en la Reumatología actual.In the present review, cases of Urgencies & Emergencies in Rheumatology and Systemic Autoimmune Diseases of adults and juveniles patients are analyzed; these are situations that require immediate medical attention. In addition, acute complications arising from background diseases (infection, metabolic disorder, organ failure) and adverse events that may arise from treatments performed for this purpose are mentioned. Pathologies by organ or system and then by syndrome or disease are highlighted. This review is intended to be helpful for young physicians in order to perform rapid recognition, diagnosis and treatment of acute pathologies and their complications in the current Rheumatology practice.Facultad de Ciencias Médica

Emergencias y urgencias en Reumatología clínica

En la presente revisión se analizan los casos de Urgencias y Emergencias en Reumatología y Enfermedades Autoinmunes Sistémicas del adulto y juveniles; las mismas son situaciones que requieren asistencia médica inmediata. Además se mencionan las complicaciones agudas que surgen de las mismas (infección, desorden metabólico, insuficiencia de órgano) y las reacciones adversas que pueden surgir de los tratamientos efectuados. Se destacan las patologías por órgano o sistema y luego por síndrome o enfermedad. La revisión tiene la intención de ser de ayuda al médico joven para un rápido reconocimiento, diagnóstico y tratamiento de las patologías agudas y sus complicaciones en la Reumatología actual

El Partido Comunista durante el trienio peronista (1973-1976) a través de la mirada de Fernando Nadra

A lo largo de este trabajo de investigación se abordarán las estrategias y posicionamientos del partido, a través de la mirada Nadra, con el objetivo de profundizar la escasamente estudiada historia del Partido Comunista y comprender, de una manera más completa, la situación política durante el trienio peronista

El proceso de “textualización”

En el capítulo anterior desarrollamos una definición de “texto musical”. En la descripción de sus características dijimos que: “El Texto Musical manifiesta en sonido el Proyecto de Texto Musical generado en el imaginario del lector en una etapa anterior. Este Proyecto se elabora durante el período previo a la manifestación sonora, denominado “proceso de textualización”. Tanto una definición del proceso de “textualización” como la conceptualización de “Proyecto” quedaron sin explicación. En este capítulo hablaremos sobre ese proceso de construcción de un texto musical, tan importante para el aprendizaje del alumno y para las estrategias de enseñanza del docente que es la “Textualización” y, a su vez, precisaremos a qué nos referimos cuando decimos “Proyecto de Texto Musical”.Facultad de Arte