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17 results on '"Massarotti G"'

2. (Ti,Sn) solid solution-based gas sensors for new monitoring of hydraulic oil degradation

Author

A. Fioravanti, Pietro Marani, Giorgio Paolo Massarotti, Stefano Lettieri, Sara Morandi, Maria Cristina Carotta, Fioravanti, A., Marani, P., Massarotti, G. P., Lettieri, S., Morandi, S., and Carotta, M. C.

Subjects
Test bench, Materials science, Sn) solid solution, (Ti,Sn) solid solution, Hydraulic fluid ageing, Mineral oil headspace analysis, Thick film gas sensors, Oxide, mineral oil headspace analysis, 02 engineering and technology, 010402 general chemistry, lcsh:Technology, 01 natural sciences, Article, Physics::Fluid Dynamics, chemistry.chemical_compound, Mineral oil headspace analysi, (Ti-Sn) solid solution, General Materials Science, lcsh:Microscopy, MOX fuel, ComputingMethodologies_COMPUTERGRAPHICS, lcsh:QC120-168.85, Sensor system, lcsh:QH201-278.5, lcsh:T, hydraulic fluid ageing, 021001 nanoscience & nanotechnology, 0104 chemical sciences, (Ti, Fluid power, Chemical engineering, chemistry, lcsh:TA1-2040, Degradation (geology), Hydraulic fluid, lcsh:Descriptive and experimental mechanics, lcsh:Electrical engineering. Electronics. Nuclear engineering, lcsh:Engineering (General). Civil engineering (General), 0210 nano-technology, thick film gas sensors, lcsh:TK1-9971, Solid solution
Abstract

The proper operation of a fluid power system in terms of efficiency and reliability is directly related to the fluid state, therefore, the monitoring of fluid ageing in real time is fundamental to prevent machine failures. For this aim, an innovative methodology based on fluid vapor analysis through metal oxide (shortened: MOX) gas sensors has been developed. Two apparatuses were designed and realized: (i) A dedicated test bench to fast-age the fluid under controlled conditions, (ii) a laboratory MOX sensor system to test the headspace of the aged fluid samples. To prepare the set of MOX gas sensors suitable to detect the analytes’ concentrations in the fluid headspace, different functional materials were synthesized in the form of nanopowders, characterizing them by electron microscopy and X-ray diffraction. The powders were deposited through screen-printing technology, realizing thick-film gas sensors on which dynamical responses in the presence of the fluid headspace were obtained. It resulted that gas sensors based on solid solution TixSn1–xO2 with x = 0.9 and 0.5 offered the best responses toward the fluid headspace with lower response and recovery times. Furthermore, a decrease in the responses (for all sensors) with fluid ageing was observed.

Published
2021

3. [Primary hyperaldosteronism. Diagnostic procedure useful in hospital routine].

Author

Beretta R, Barzaghi W, Bernieri A, Cassi E, Colombo A, Massarotti G, and Renzetti GA

Subjects
Adenoma diagnosis, Adrenal Cortex Neoplasms diagnosis, Adult, Aldosterone urine, Diet, Sodium-Restricted, Diuretics pharmacology, Female, Humans, Potassium blood, Radiography, Renal Artery diagnostic imaging, Renin blood, Sodium pharmacology, Spironolactone pharmacology, Hyperaldosteronism diagnosis
Abstract

Personal experience in the management of three cases of primary hyperaldosteronism, in which a cure was obtained by surgical removal of an adrenocortical adenoma, is was used in the elaboration of a diagnostic procedure requiring hospitalisation for 12 days. During 6 days, the patient is kept on a diet containing 100 mEq Na and K, and blood potassium values are repeatedly determined. Other causes of hypertension are ruled out. On the 6th day, baselines for blood renin and urinary aldosterone are calculated. Next, a hyposodic diet is given for 4 days, and a diuretic is administered on the last of these days, after which renin is determined "in response to stimulation". Lastly, two days of i.v. NaCl loading are followed by the determination of urinary aldosterone "during inhibition". If the picture is positive for hyperaldosteronism, the patient is discharged and followed during treatment with spironolactone, and eventually subjected to renal and adrenal arteriography to determine the site of the adenoma. Division of the procedure into increasingly complex steps enables the examination to be halted at any point when evidence in support of the suspected diagnosis fails to appear. This feature, coupled with the simplicity of the procedures adopted, enables all young subjects admitted for unexplained hypertension to be screened for hyperaldosteronism, with the assurance of obtaining certain diagnosis without an excessively long stay in hospital.

Published
1978

4. [Dyslipidemia and coronary disease. Clinico-coronarographic study].

Author

Passoni F, Castelli C, Aiazzi L, Caprioli G, D'Urbano M, Baldrighi G, Massarotti G, and Ferrè A

Subjects
Adult, Female, Humans, Male, Middle Aged, Triglycerides blood, Cholesterol blood, Coronary Disease blood
Abstract

An inverse relationship between alpha-cholesterol and coronary atherosclerosis was observed in 200 male patients given coronographies. Specifically the lowest alpha-cholesterol levels were observed in patients with the most serious and widespread atherosclerotic lesions. This inverse correlation was maintained at the same level in all age groups.

Published
1982

5. [Familial hypercholesteremia. Clinico-diagnostic and therapeutic aspects].

Author

Cassi E, Massarotti G, Bernieri A, Cova L, Colombo A, Beretta R, and Pagani C

Subjects
Adult, Aged, Child, Cholestyramine Resin therapeutic use, Clofibrate therapeutic use, Female, Humans, Male, Middle Aged, Nicotinic Acids therapeutic use, Pedigree, Hyperlipidemias diagnosis, Hyperlipidemias genetics, Hyperlipidemias therapy
Abstract

A case of familial hypercholesterolaemia detected in a homozygous subject following the investigation of two large families with a high incidence of the disease, is presented. The genetic background of this form is discussed. Reference is made to the difficulty of identifying heterozygotes and homozygotes and the mode of transmission followed in the two families. The results of 45 months' treatment with cholestiramine and clofibrate and a dietary regimen are described.

Published
1978

12. [The immunoglobulin pattern of sweat].

Author

Bazzi C, Cattaneo R, and Massarotti G

Subjects
Electrophoresis, Humans, Immunoelectrophoresis, Sweat analysis, gamma-Globulins analysis
Published
1967

13. [Studies of the antigenicity of reagins].

Author

Ortolani C, Bazzi C, Cattaneo R, and Massarotti G

Subjects
Humans, Immunoglobulin E, Antibodies analysis, Rhinitis, Allergic, Seasonal blood, gamma-Globulins analysis
Published
1967

14. [On immunoglobulins of external secretions].

Author

Bazzi C, Besana C, Cattaneo R, Massarotti G, and Medina F

Subjects
Electrophoresis, Humans, Immunoelectrophoresis, Bile analysis, Colostrum analysis, Immunoglobulin G analysis, Immunoglobulin M analysis, Saliva analysis, Tears analysis
Published
1968

16. [Treatment of chronic portal-systemic encephalopathy with lactulose (synthetic disaccharide: one molecule of galactose and one of fructose)].

Author

Cassi E, Sala E, Beretta R, Colombo A, Cova L, Ezechieli S, Malacco E, Massarotti G, and Pagani C

Subjects
Adult, Aged, Ascites etiology, Brain Diseases complications, Chronic Disease, Female, Humans, Liver Cirrhosis complications, Male, Middle Aged, Brain Diseases drug therapy, Disaccharides therapeutic use, Fructose therapeutic use, Galactose therapeutic use, Liver Cirrhosis drug therapy, Portal System
Published
1972

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