Search results for "STIR"
showing 10 items of 426 documents
PERCHE' INVESTIRE IN SICILIA: I PROFILI FISCALI
2012
Fed-batch simultaneous saccharification and fermentation including in-situ recovery for enhanced butanol production from rice straw
2021
Abstract This paper describes a study of fed-batch SSFR (simultaneous saccharification, fermentation and recovery) for butanol production from alkaline-pretreated rice straw (RS) in a 2-L stirred tank reactor. The initial solid (9.2% w/v) and enzyme (19.9 FPU g-dw-1) loadings were previously optimized by 50-mL batch SSF assays. Maximum butanol concentration of 24.80 g L-1 was obtained after three biomass feedings that doubled the RS load (18.4% w/v). Butanol productivity (0.344 g L-1h−1) also increased two-fold in comparison with batch SSF without recovery (0.170 g L-1h−1). Although fed-batch SSFR was able to operate with a single initial enzyme dosage, an extra dosage of nutrients was requ…
Conflicts related to Human Resource Management in Finnish Project-Based Companies
2020
In contemporary working life of Nordic countries, employee involvement and well-being are emphasized and organizational functions and demands are continuously changing. Thus, the study of human resource management (HRM) practices and their consequences for employees is relevant. This study examines conflicts related to HRM in Finnish project-based companies and provides new information on the implications of conflicts in HRM practices for theorists and practitioners. The research was conducted qualitatively using content and thematic analysis. The findings suggest that conflicts framed within HRM practices are generally the result of the practices and expectations of the organization and ma…
New Materials Design Through Friction Stir Processing Techniques
2007
Friction Stir Welding (FSW) has reached a large interest in the scientific community and in the last years also in the industrial environment, due to the advantages of such solid state welding process with respect 1(o) the classic ones. The complex material flow occurring during the process plays a fundamental role in such solid state welding process, since it determines dramatic changes in the material microstructure of the so called weld nugget, which affects the effectiveness of the joints. What is more, Friction Stir Processing (FSP) is mainly being considered for producing high-strain-rate-superplastic (HSRS) microstructure in commercial aluminum alloys. The aim of the present research…
An experimental and kinetic modeling study on the oxidation of 1,3-dioxolane
2021
International audience; The modern catalytic or enzymatic advances allow the production of novel biofuel. Among them, 1,3dioxolane can be produced from formaldehyde and ethylene glycol, both can be obtained from biomass. In this study, the oxidation of 1,3-dioxolane is studied at stoichiometric conditions. The ignition delay times of 1,3-dioxolane/O 2 /inert mixtures were measured in a shock tube and in a rapid compression machine at pressures of 20 to 40 bar and temperatures ranging from 630 to 1300 K. The pressure profiles recorded in the rapid compression machine show a first stage of ignition enlightening the influence of the low temperature chemistry of combustion. Furthermore, mole fr…
An experimental and modeling study of the oxidation of 3-pentanol at high pressure
2019
International audience; High pressure oxidation of 3-pentanol is investigated in a jet-stirred reactor and in a shock tube. Experiments in the reactor were carried out at 10 atm, between 730 and 1180 K, for equivalence ratios of 0.35, 0.5, 1, 2, 4 and 1000 ppm fuel, at a constant residence time of 0.7 s. Reactant, product and intermediate species mole fractions were recorded using Fourier transform infrared spectroscopy (FTIR) and gas chromatography (GC). Ignition delay times were measured for 3-pentanol/O2 mixtures in argon in a shock tube at 20 and 40 bar, in a temperature range of 1000–1470 K and for equivalence ratios of 0.5, 1 and 2. The fuel did not show any low-temperature reactivity…
An overview of new joining technologies in aerostructures: laser beam welding and friction stir welding
2009
Thermodynamics of a Phase-Driven Proximity Josephson Junction
2019
We study the thermodynamic properties of a superconductor/normal metal/superconductor Josephson junction {in the short limit}. Owing to the proximity effect, such a junction constitutes a thermodynamic system where {phase difference}, supercurrent, temperature and entropy are thermodynamical variables connected by equations of state. These allow conceiving quasi-static processes that we characterize in terms of heat and work exchanged. Finally, we combine such processes to construct a Josephson-based Otto and Stirling cycles. We study the related performance in both engine and refrigerator operating mode.
Breve insinuacion del hecho, y drecho que acredita la Justicia de Doña Francisca Micó y de Corbì, Viuda. En los Autos que contra èsta suscitò el Real…
A la part superior de la port.: "Jesus, Maria, Joseph, y S. Francisco de Paula" Signat al final: "Dr. Luciano Sulroca" Port. orlada Grav. xil. enmarcat a la port Caplletra ornada al començament del text Sign.: [A]2, B-C2 Reclams
Por el juez conservador, y privativo, nombrado por su Magestad para todos los negocios, y causas pertenecientes al Real Monasterio, y Priorato de San…
1733
A la part superior de la port.: "Jesus, Maria, Joseph", separat del tít. per banda tip Al f. 2 consta: "... nombrando al Licenciado Don Manuel de Riovello Franco, Doctoral de la Iglesia Cathedral de Orense, por Juez Conservador, y Privativo..." Firma ms. al final de l'autor de l'al·legació "Blas Antonio Nasarre y Mayans", junt a dos notes mss: "se apellidó Mayans no porque lo fuera sino por mostrar su amistad" "que no guardò portandose con mucha infedilidad. Muriò dia 13. de Abril de 1751" Caplletres grav Sign.: [A]2, B-Q2 Port. amb orla tip Text amb postil·les marginals Notes a peu de p Reclams