Evaluation of different iron compounds in chlorotic Italian lemon trees (Citrus lemon).

The severe deficiency of iron or ferric chlorosis is a serious problem of most citrus trees established in calcareous soils, as a result of the low availability of iron in these soils and the poor uptake and limited transport of this nutrient in trees. The objective of this study was to evaluate the response of chlorotic Italian lemon trees (Citrus lemon) to the application of iron compounds to roots and stems. On comparing the effects of aqueous solutions of ferric citrate, ferrous sulphate and FeEDDHA chelate, applied to 20% of the roots grown in soil and sand, of trees that were planted in pots containing calcareous soil, it was observed that the chelate fully corrected ferric chlorosis, while citrate and sulphate did not solve the problem. EDDHA induced the root uptake of iron as well as the movement of the nutrient up to the leaves. With the use of injections of ferric solutions into the secondary stem of adult trees, ferric citrate corrected chlorosis but ferrous sulphate did not. The citrate ion expanded the mobility of iron within the plant, from the injection points up to the leaves, whereas the sulphate ion did not sufficiently improve the movement of iron towards the leaf mesophyll.

Principales causas de morbilidad y mortalidad en el Servicio de Emergencia del H. Eugenio Espejo / Main causes of morbidity and mortality in the Service of Emergency of the H. Eugenio available esofágico Mirror

Se estudian las consultas médicas de clínica y cirugía en la sala de emergencia del Hospital Eugenio Espejo. El objetivo es determinar una línea de base destacando causas de muerte puntuales como son: trauma, enfermedad cerebro vascular, isquemia del corazón e intoxicaciones, a lo que se añadió las causas de características de los pacientes y condiciones al salir. De acuerdo al sexo de los pacientes atendidos en las salas de urgencias el 58 por ciento corresponde a hombres y el 42 por ciento a mujeres. Del total de pacientes atendidos en emergencia el 27 por ciento fueron atendidos entre 3 y 24 horas, luego de ocurrido el hecho, entre 1 y 3 horas el 7.4 por ciento, de 2 a 7 días 17 por ciento y de 7 días y más una quinta parte...

Acute right ventricular infarction: clinical spectrum, results of reperfusion therapy and short-term prognosis.

BACKGROUND: The role of thrombolytic therapy (TT) and percutaneous coronary interventions (PCIs) in subgroups of patients with right ventricular infarction (RVI) has not been evaluated. METHODS AND RESULTS: We risk-stratified 302 patients with RVI into three subsets upon admission. Class A (n=197) comprised patients without right ventricular (RV) failure, Class B (n=69) with RV failure and Class C (n=36) with cardiogenic shock. All eligible patients in Class A or B received either PCI or TT. Patients in Class C eligible for reperfusion were treated with PCI. All patients were evaluated for in-hospital major adverse cardiac events and short-term mortality. There was a statistically significant difference in in-hospital mortality among the classes. Classes B and C were the strongest indicators of in-hospital mortality. By multivariate analysis TT or PCI did not reduce mortality in Classes A and B, but a clinically favorable trend in mortality reduction was documented: both methods decreased RV dysfunction in Class B (from 97% to 61% with TT and to 28% with PCI; P < 0.001) and PCI reduced the risk of mortality in Class C (89.5% compared with 58%; P < 0.05). CONCLUSIONS: Classification into types A, B or C allows the prediction of mortality. The use of TT or PCI suggests a clinical favorable trend in the reduction of mortality in Class A, either is beneficial in Class B for decreasing morbidity and PCI appears to be the most appropriate procedure for Class C since it reduced mortality.

Proyecto de una planta de teñido de hilos en bobinas cruzadas

Este trabajo fué elaborado teniendo en cuenta los problemas existenes en la industria textil, como ser aumento de los costos de energia, mano de obra y cargas sociales, tamaños de lotes cada vez más corto, considerando que la industria textil depende no solo de la producción económica, sino de una mejora en la cantidad y seguridad en la calidad