On the atebrin inhibition of the oxidation of adrenaline by the monoaminooxidase

The effect of adrenaline in the organism of homoiotherm (hot bodied) animals lasts, on account of his easy oxidability, but a short time. The colourless solution of adrenaline when exposed to the open air becomes yellow and finally brown due to the oxidation. The different tissues of the body posses enzymatic systems, which are capable to oxidize the adrenaline. The oxidation may -occur at two places of its molecule: on the ring or on the chain with the production of ammonia

Laboratory experimental investigation of heat transport in fractured media

Low enthalpy geothermal energy is a renewable resource that is still underexploited nowadays in relation to its potential for development in society worldwide. Most of its applications have already been investigated, such as heating and cooling of private and public buildings, road defrosting, cooling of industrial processes, food drying systems or desalination. Geothermal power development is a long, risky and expensive process. It basically consists of successive development stages aimed at locating the resources (exploration), confirming the power generating capacity of the reservoir (confirmation) and building the power plant and associated structures (site development). Different factors intervene in influencing the length, difficulty and materials required for these phases, thereby affecting their cost. One of the major limitations related to the installation of low enthalpy geothermal power plants regards the initial development steps that are risky and the upfront capital costs that are huge. Most of the total cost of geothermal power is related to the reimbursement of invested capital and associated returns. In order to increase the optimal efficiency of installations which use groundwater as a geothermal resource, flow and heat transport dynamics in aquifers need to be well characterized. Especially in fractured rock aquifers these processes represent critical elements that are not well known. Therefore there is a tendency to oversize geothermal plants. In the literature there are very few studies on heat transport, especially on fractured media. This study is aimed at deepening the understanding of this topic through heat transport experiments in fractured networks and their interpretation. Heat transfer tests have been carried out on the experimental apparatus previously employed to perform flow and tracer transport experiments, which has been modified in order to analyze heat transport dynamics in a network of fractures. In order to model the obtained thermal breakthrough curves, the Explicit Network Model (ENM) has been used, which is based on an adaptation of Tang’s solution for the transport of the solutes in a semi-infinite single fracture embedded in a porous matrix. Parameter estimation, time moment analysis, tailing character and other dimensionless parameters have permitted a better understanding of the dynamics of heat transport and the efficiency of heat exchange between the fractures and the matrix. The results have been compared with the previous experimental studies on solute transport

The Influence of Castration on the Constituents of Rat\u27s Liver

Houssay and coworkes showed that the incidence of diabetes in castrated male rats induced by subtotal pancreatectomy is less than in normal ones . Female rats were more resistant to diabetes than male ones, the resistance itself being decreased by castration. The increased resistance of male castrated rats was ascribed to the removal of testicular hormones. The ovarial hormones produced, in subtotally depancreatized rats hypertrophy of insular tissue in which dominated the number of B-cells i. e. the insulinogenic cells

The Influence of Castration on the Constituents of Rat\u27s Liver

Houssay and coworkes showed that the incidence of diabetes in castrated male rats induced by subtotal pancreatectomy is less than in normal ones . Female rats were more resistant to diabetes than male ones, the resistance itself being decreased by castration. The increased resistance of male castrated rats was ascribed to the removal of testicular hormones. The ovarial hormones produced, in subtotally depancreatized rats hypertrophy of insular tissue in which dominated the number of B-cells i. e. the insulinogenic cells

Gegenwirkung von Insulin und Thyroxin

Die Gegenwirkung der physiologischen Tatigkeit des lnsularapparates der Bauchspeicheldruse und der Schilddruse ist schon seit langem bekannt. Viele Forscher haben sich bemuht vereinzelte Fraigen dieses Verhaltnisses oder das ganze Problem zu losen. Der Weg der zum erwahnten Ziel fuhren sollte, ging selbstverstandlich auch durch die Untersuchungen von Eigenschaften und Wirkungen der vereinzelten Inkrete, die die gennanten Drusen absondern

Gegenwirkung von Insulin und Thyroxin

Die Gegenwirkung der physiologischen Tatigkeit des lnsularapparates der Bauchspeicheldruse und der Schilddruse ist schon seit langem bekannt. Viele Forscher haben sich bemuht vereinzelte Fraigen dieses Verhaltnisses oder das ganze Problem zu losen. Der Weg der zum erwahnten Ziel fuhren sollte, ging selbstverstandlich auch durch die Untersuchungen von Eigenschaften und Wirkungen der vereinzelten Inkrete, die die gennanten Drusen absondern

Adrenalinoxydation und die erdte Hyporglykamische phase des Alloxandiabetes

Seit der Entdeckung des experimentellen Alloxandiabetes durch Dunn und Mitarbeiter haben sich viele Forscher bemuht den Mechanismus seiner Entstehung zu ergrunden. Die gennanten Authoren haben die Nekrosis der Langerhansschen. Inselzellen und den ireversiblen Diabetes nach Zufuhr von Alloxan beschrieben

Adrenalinoxydation und die erdte Hyporglykamische phase des Alloxandiabetes

Seit der Entdeckung des experimentellen Alloxandiabetes durch Dunn und Mitarbeiter haben sich viele Forscher bemuht den Mechanismus seiner Entstehung zu ergrunden. Die gennanten Authoren haben die Nekrosis der Langerhansschen. Inselzellen und den ireversiblen Diabetes nach Zufuhr von Alloxan beschrieben

Experimental Study of Heat Transport in Fractured Network

AbstractFractured rocks play an important role in transport of natural resources through subsurface systems. In recent years, interest has grown in investigating heat transport by means of tracer tests, driven by the important current development of geothermal applications. Many field and laboratory tracer tests in fractured media show that fracture - matrix exchange is more significantfor heat than mass tracers, thus thermal breakthrough curves are strongly controlled by matrix thermal diffusivity. In this study, the behaviour of heat transport in a fractured network, at bench laboratory scale, has been investigated