Quantitative leak test design guide

Calibrated enclosure technique for rapid and accurate determination of leak rate

Thermal induced flow oscillations in heat exchangers for supercritical fluids

Analytical model has been developed to predict possible unstable behavior in supercritical heat exchangers. From complete model, greatly simplified stability criterion is derived. As result of this criterion, stability of heat exchanger system can be predicted in advance

Felix Henneguy e l'Italia

La scoperta di un certo numero di fotografie di personaggi risorgimentali nel fondo di F\ue9lix Henneguy (1830-1899) ha permesso di venire a conoscenza di un cenacolo italo francese negli anni immediatamente consecutivi il colpo di stato in Francia. Il giovane Henneguy, esule in Italia dopo il 1851, intesse una rete di relazioni con i collaboratori della rivista La Ragione diretta da Ausonio Franchi in particolare con gli italiani rientrati in patria a sostegno dell'azione di Cavour. Ci\uf2 gli permette di simpatizzare con la causa italiana ritrovandosi sulle posizioni filounitarie di Quinet, Michelet et Renouvier e in generale della scuola critico-razionalista francese prendendo quindi chiaramente le distanze dalla posizione proudhoniana. Svolge inoltre una interessante analisi della societ\ue0 italiana cogliendone le caratteristiche in contrapposizione a quelle francesi impegnandosi a superare i pregiudizi reciproci.

The complementary role of imaging and tumor biomarkers in gynecological cancers: an update of the literature

Gynecological tumors, including endometrial, cervical and ovarian cancer, have increased in incidence over time. The widespread introduction of screening programs and advances in diagnostic imaging methods has lead to a progressive increase in gynecological cancer detection. Accurate diagnosis and proper monitoring of disease remain the primary target for a successful treatment. In the last years, knowledge about cancer biomarkers has considerably increased providing great opportunities for improving cancer detection and treatment. In addition, in the last few years there has been an important development of imaging techniques. Nowadays, a multimodal approach including the evaluation of serum tumor biomarkers combined with imaging techniques, seems to be the best strategy for assessing tumor presence, spread, recurrence, and/or the response to treatment in female cancer patients In this review we provide an overview of the application of biomarkers combined with novel imaging methods and highlight their roles in female cancer diagnosis and follow-up

Optimal performance of equilibrium parametric pumps

An examination of the conditions required to obtain the optimal performance of semicontinuous and continuous parametric pumps, defined by the achieving of the maximum possible solute free product for a given column height, was undertaken. The model system sodium nitrate ? water on an ion retardation resin adsorbate was employed. Equations defining maximum values of certain important parameters such as the bottom product flow rate and reservoir displacement rate were developed by extending previous theories of parametric pumping. Experimental runs were carried out using parameters whose values were both less than and greater than the maximum values predicted for optimal performance. It was found that for pumps operating with parameter values less than the limiting maximum values, complete removal of solute from the bottom of the column was obtained. Furthermore, for those pumps for which the parameter values were greater than the predicted maximum quantities only partial removal of solute was observed. The experimental results agreed quantitatively as well as qualitatively with the theory for almost all runs