Gradiente adiabático del aire seco y también aplicable con mucha aproximación al aire húmedo sin saturar. Su valor es aproximadamente de 1°C/ m. T4. JIMÉNEZ URREGO JONATHAN AIRE SECO Y AIRE HUMEDO El aire es el resultado de la mezcla de gases que se encuentran. húmedo, dejando la formación de nubes y las precipitaciones para después. gradiente adiabático seco, que él llamaba ‘caída de temperatura en equilibrio.

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Study of stability of humic acids from soil and peat irradiated huedo gamma rays; Estudo da estabilidade de acidos humicos extraidos de solo e turfa, frente a radiacao ionizante gama.

Humic acids samples one deriving from a sedimentary soil and other from a peatin aqueous media, were irradiated with gamma rays, in doses of 10, 50 and kGy, in order to understand their chemical behavior after the irradiation.

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The Elemental Analysis showed the humic acid derived from a peat had a most percentage quantity of Carbon and Hydrogen than the material from a sedimentary soil. The data from GPC are in agreement with this. The results showed that the molecular weight of the material increased by exposing it to a larger radiolitical dose. The peat material was less affected by the gamma radiation than the soil material. The carboxylic groups were responsible by radiochemical behavior of the material. Uranium accumulation in Brassica rapa L.

Lopez del R, H.

Gradiente adiabático saturado

La Penuela, Zacatecas, Zac. Mexico ; Rodriguez H, G. Phyto extraction is a technique that makes use of plants for the remediation of soils contaminated with heavy metals.

In this study the uranium incorporation in the Brassica rapa L. Soil free of organic matter and biologically inert was obtained by controlled calcination s of natural soil.

Cultures in the prepared soil consisted of five growth treatments: There was no adverse effect on plant growth with the presence of uranium at the given concentration. Regarding the controls, the total biomass in the presence of uranium was slightly higher, while the addition of humic acids significantly stimulated the production of biomass with respect to the citric acid. The combined action of organic acids produced the highest amount of biomass. The values of uranium concentration in the total biomass show that the species Brassica rapa L.

The addition of humic acids increases the uranium extraction while the addition of citric acid disadvantages it. Azione citodifferenziante ed antitumorale dell’ acido ellagico.

Il lavoro ha lo scopo di valutare l’effetto citodifferenziante ed antitumorale dell’ acido ellagico in tre diverse linee cellulari prostatiche a diverso grado di invasivita’ DU, LnCap, BPH1.

I risultati della Cromogranina A e della P75 NGRF, ottenuti mediante immunofluorescenza, evidenziano un’azione citodifferenziante dell’ acido ellagico in maniera dose dipendente. Inoltre i risultati dimostrano come l’ acido ellagico abbia la capacita’ di ridurre, in maniera dose dipendente, sia l’espres Directory of Open Access Journals Sweden. Effect vradiente the humic acids in the adsorption of U Vi in a Mexican natural grqdiente Efecto de los acidos humicos en la adsorcion de U VI en una zeolita natural mexicana.

La Penuela, Zacatecas Mexico. The uranium adsorption was studied in a Mexican natural zeolite of the clinoptilolite type in presence and absence of humic acids Ha. The adsorption kinetics of the binary U-zeolite and ternary U-Ha-zeolite systems were compared, and the effect of the humic matter impregnated in the adizbatico in the uranium removal in function of the solution ph was studied.

The data of the binary system U-zeolite were analyzed with three kinetic models of adsorption pseudo-first order, pseudo-second order and Elovich.

By means of non lineal regression was found that the uranium adsorption obeys a kinetic of pseudo-second order.

It was observed that the uranium adsorption in the zeolite impregnated with Ha is favored to more ph at 5.

Phosphorus in chronosequence of burnt sugar cane in Brazilian cerrado: The main forms of P-type found were orthophosphate, monoester-P phosphate sugars and P-diester orthophosphate. In areas with 1 and 5 years of burnt cane, a decrease in recalcitrant organic P in humic acids indicated the need for use of P-humic substances for plant nutrition author. Cross linkage studies with the membranes of the vesicular stomatitis virus using radioactive 4- acido and 5- acido palmitic acid.

In the study described here the spatial arrangement of lipids and proteins in the VS virus was investigated on the basis of the covalent cross linkage technique. The formation of such cross linkages is brought about by the action of photosensitive acidosubstituted lipids, which permit acido functions to be introduced into a membrane in a previously defined position. Subsequently, photolysis helps to trigger the generation of radioactive nitrenes that react with the proteins and lipids in their immediate vicinity in a direct and non-selective way.


The findings revealed by this study have raised questions as to the possibility of lipid-protein and lipid-lipid interactions, which is also discussed. Oxytocin and insulin were denatured by this system, and catalase and DMSO similarly inhibited these denaturations. Acido -basic control of the thermoelectric properties of poly 3,4-ethylenedioxythiophene tosylate PEDOT-Tos thin films.

We could identify changes But, we identified that changing the pH leads to a tuning of the oxidation level of the polymer, which can explain the changes in thermoelectric properties. Hence, a simple acid-base treatment allows finding the optimum Peracetic acid as disinfectant of municipal wastewaters; L’ acido peracetico nella disinfezione dei reflui urbani. Such features are just the opposite of those of chlorine, i.

dry-adiabatic lapse rate

During chlorine-disinfecting, in fact, numerous harmful organo-chlorinated Dbp are formed and, accordingly, the toxicity of chlorinated effluents results very high. The present paper, adiabatido reporting an extensive and useful collection of references concerning Paa, provides a critical review on the current knowledge regarding specific Paa features such as: Il crescente interesse nei confronti di questa sostenza, gia’ nota come disinfettante in. Wastewater disinfection with peracetic acid and UV; La disinfezione di acque reflue con acido peracetico e raggi ultravioletti.

Was investigated the synergy between UV and peracetic acid PAA through a five months on-site experimental study in a pilot plant fed by the secondary effluent humdo the central wastewater treatment plant of Pistoia, Italy. This experiment is a part of a larger research project on advanced treatment for municipal wastewater reuse in agriculture. In the investigated experimental conditions, it has been impossible to meet such values through an exclusive use of UV irradiation the UV unit reaches at most 4 Log inactivation.

Low levels of PAA greatly enhance the decline of indicator levels, but higher unsustainable doses are required to hit the Italian limit. Through a poor amount of information gradiene the subject was available gradients literature, it was tried to find out how the disinfection efficiency could improve by simultaneously using UV and PAA. It was found out that a combined treatment is satisfactory and that it is more advantage of the hydroxyl radicals formation due to the PAA photo lysis.

Nelle condizioni sperimentali considerate, non e. The corrosion behavior of gas metal arc welding GMAW regions has been uumedo using potentiodynamic polarization and polarization resistance LPR techniques. Base metal exhibited the highest corrosion rate CR gradirnte the most cathodic corrosion potential.

El metal base exhibio la velocidad de corrosion VC mas alta y el potencial de corrosion mas catodico. Full Text Available Metodos electroquimicos fueron swco para promover y evaluar la adsorcion orientada de albumina y colageno sobre superficies polimericas de acido polilactico PLA mediante la aplicacion de un sobrepotencial anodico gradientee un rango de 0 V a 0,45 V. Con el aumento humeo la concentracion de proteinas en el electrolito, disminuye la resistencia a la transferencia de carga, exhibiendo asi una mayor adsorcion sobre la superficie, ademas de aumentar la magnitud de los cambios de masa.

Se mejoro la hidrofilicidad del recubrimiento, mostrando una mayor afinidad con las soluciones de colageno y por lo tanto un aumento en la biocompatibilidad debido a la activacion superficial.

Determination of the load state of lead-acid batteries using neural networks; Determinacion del estado de wdiabatico de baterias plomo- acido utilizando redes neuronales. The charge of lead-acid batteries LABas in any other type of batteries, consists of replacing the energy consumed during the discharge.

A critical factor to make a suitable load control of the batteries is to determine its own state of load. That is to say, to have an efficient load control, it is necessary to count on means that allow to accurately determining the residual capacity of the battery to deliver load.

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This one is the one huemdo the aspects of greater interest in the research centers around world. For this reason, in this work it was pretended to develop a calculation algorithm of the state of load of batteries based on a fuzzy-neural network that could calculate the state of load without using the battery current as an input.

This is because one of the main problems for the designers of battery load controllers is the correct supervision of the current that circulates around the system in all the rank of operation of the same one because the sensors do not have a linear behavior.


Un factor critico para realizar un adecuado control de carga de las baterias, es determinar su propio estado de carga.

Es decir, para tener graeiente control de carga eficiente, es necesario contar con un medio que permita determinar con precision la capacidad remanente de la bateria para entregar carga. Este es uno de los aspectos de mayor interes en los centros de investigacion alrededor el mundo.

Por tal razon, en este trabajo se propuso. The use of peracetic acid in drinking water systems: In a previous research, a preliminary study was carried out on the disinfection efficiency of peracetic acid PAAcomparing humeo to that of other disinfectants that are typically used, in batch tests with dosage values ranging from 0.

The study was carried out on samples of water collected from several significant points of the treatment process at the main water treatment plant in Jesolo Venice, Italy. Dona’ di Piave Venezia. Proposal to neutralize acid fluids from wells in secl Los Humeros, Pue. Neutralizing an acidic fluid consists of adding a sodium hydroxide solution to neutralize the H group of acids, therefore increasing the pH.

The injection of sodium hydroxide has to be continuous and at a proper depth inside the well to protect against the corrosion of casing and surface equipment. Neutralization is a common practice used in geothermal fields, such as at The Geysers in the US and Miravalles in Costa Rica-places where aggressive adiabahico cause problems for extracting and using geothermal fluids commercially. Several wells drilled in the area had to be repaired, thus plugging and isolating the deepest production zones.

Well H was drilled two years ago in the northern zone of the field, and even though it is not located in the aggressive-fluid zone, the well presents mineralogical features possibly indicating the presence of acidic fluids. Therefore, before producing this well it has been proposed we install a neutralization system with general characteristics presented in this paper.

The system will prevent corrosion that up to now has prevented exploitation of the deep portion of Colapso Central, helping to develop the field in a more profitable way. Esto neutraliza el grupo de acidos H y en consecuencia aumenta adianatico pH. La inyeccion de hidroxido de sodio se realiza de manera continua y a una profundidad adecuada dentro del pozo para proteger a la tuberia y a todo el bumedo superficial contra la corrosion.

La neutralizacion es una practica comun que se viene realizando hmedo campos como Los Geysers en Estados Unidos y en Miravalles, Costa Rica, donde la presencia de fluidos agresivos causa problemas en la extraccion y aprovechamiento del fluido geotermico con fines.

Synthesis and characterization of PdAg as a catalyst for oxygen reduction reaction in acid medium; Sintesis y caracterizacion de PdAg como catalizador para la reaccion de reduccion de oxigeno en medio acido. This work presents the synthesis of the binary compound PdAg and the electrochemical characterization for oxygen reduction reaction ORR in acid medium.

The electrochemical current-potential responses were compared to those of palladium and platinum. The adixbatico results showed an increase in the performance of the bimetallic electrocatalyst containing Ag as compared to pure Pd, but less than that obtained with nanometric Adiabatixo.

The Tafel slopes obtained are roughly mV dec-1, similar to that reported for Pt and Pd and for other Ru-based electrocatalysts. Se realizaron estudios electroquimicos para determinar la gradientte catalitica y las propiedades intrinsecas del material de PdAg para la reaccion de reduccion de oxigeno RRO en graeiente acidoutilizando las tecnicas de voltamperometria ciclica VCelectrodo disco rotatorio EDR y espectroscopia de impedancia electroquimica EIEen.

Changes adiabatjco arterial blood pressure, heart rate, internal body temperature, and blood acido -basic balance in the unanaesthetized rabbit following whole-body gamma irradiation at a mean absorbed dose of rads. The general effects of whole-body gamma -irradiation at a mean absorbed dose of rads were studied gradiehte in the unanaesthetized rabbit for 48 hours. They occurred early, with the following characteristics: