In the present work, nanostructured Cu2O films are directly grown from a Cu metal foil by means of a rapid thermal oxidation process. The structural characteristics of the films are investigated by ...field emission scanning electron microscopy, X-ray diffraction and attenuated total reflectance Fourier-transformed infrared spectroscopy. The electrochemical behaviour is investigated in both lithium (liquid electrolyte) and all-solid lithium polymer cells. At a discharge/charge rate of C/5, the films can provide a specific capacity greater than 220mAhg−1 in the all-solid configuration, with excellent cycling stability and capacity retention after prolonged cycling. High surface area, short diffusion path and good conduction of the Cu2O films are considered to be responsible for the good electrochemical performance, along with the use of the polymeric electrolyte which is directly formed in situ on the electrode film surface. The present findings can provide a new and easy approach to fabricate nanocomposite films with interesting performance as negative electrode particularly for the next generation of flexible all-solid-state Li-ion microbatteries.
•Fournier’s gangrene (FG) is a rare disease which usually affects men. It is characterized by progressive necrotizing fasciitis.•A 66-year-old man with uncontrolled type 2 diabetes, obesity with BMI ...38, chronic kidney failure and chronic heart failure, reported the onset of symptoms about 14 days before his hospitalization, without consulting any doctor due to Covid-19 pandemic.•The combination therapy of surgical debridement and antibiotics infusion was effective.
Fournier’s gangrene is a potentially fatal emergency condition, supported by an infection of perineal and perianal region, characterized by necrotizing fasciitis with a rapid spread to fascial planes. FG, usually due to compromised host, may be sustained by many microbial pathogens.
A 66-year-old man, with a history of uncontrolled type 2 diabetes, obesity with BMI 38, chronic kidney failure and chronic heart failure, was admitted to the Emergency Department with a large area of necrosis involving the perineal and perianal regions.
Fournier’s gangrene is favoured by hypertension, obesity, chronic alcoholism, renal and heart failure. Generally, Fournier’s gangrene needs other procedures in addition to wound debridement such as colostomy, cystostomy, or orchiectomy.
We report a case of FG found as complication in a patient with uncontrolled type 2 diabetes, treated with effective combination therapy with surgical debridement and antibiotics infusion.
We have searched for a deeply bound kaonic state by using the FINUDA spectrometer installed at the e(+)e(-) collider DAPhiNE. Almost monochromatic K(-)'s produced through the decay of phi(1020) ...mesons are used to observe K(-) absorption reactions stopped on very thin nuclear targets. Taking this unique advantage, we have succeeded to detect a kaon-bound state K(-)pp through its two-body decay into a Lambda hyperon and a proton. The binding energy and the decay width are determined from the invariant-mass distribution as 115(+6)(-5)(stat)(+3)(-4)(syst) MeV and 67(+14)(-11)(stat)(+2)(-3)(syst) MeV, respectively.
In the present work, nanostructured Cu2O films are directly grown from a Cu metal foil by means of a rapid thermal oxidation process. The structural characteristics of the films are investigated by ...field emission scanning electron microscopy, X-ray diffraction and attenuated total reflectance Fourier-transformed infrared spectroscopy. The electrochemical behaviour is investigated in both lithium (liquid electrolyte) and all-solid lithium polymer cells. At a discharge/charge rate of C/5, the films can provide a specific capacity greater than 220 mAh g-1 in the all-solid configuration, with excellent cycling stability and capacity retention after prolonged cycling. High surface area, short diffusion path and good conduction of the Cu2O films are considered to be responsible for the good electrochemical performance, along with the use of the polymeric electrolyte which is directly formed in situ on the electrode film surface. The present findings can provide a new and easy approach to fabricate nanocomposite films with interesting performance as negative electrode particularly for the next generation of flexible all-solid-state Li-ion microbatteries.
Display omitted
•Topotactic low temperature oxidation process to convert Zn nanostructures into ZnO.•Conversion based on water vapor in ambient atmosphere and near to room temperature.•Water ...vapor-oxidized samples integrated as dye-sensitized solar cell photoanodes.•Results compared with thermally treated electrodes.•Highly promising properties of this material as low-temperature processed photoanode.
In this manuscript a low temperature oxidation process to convert zinc nanostructures into ZnO preserving the nanomorphology is presented. This method involves the exposure of sputtered porous metal films to water vapor flow in ambient atmosphere and near to room temperature. The converted material was investigated by morphologic, stoichiometric and crystallographic characterizations revealing the formation of spongy ZnO nanostructures in wurzite phase. Water vapor-oxidized samples were integrated as dye-sensitized solar cell photoanodes and characterized by I–V electrical and electrochemical impedance spectroscopy and the results compared with thermally treated electrodes. The obtained photovoltaic parameters confirm the highly promising properties of this material as low-temperature processed dye-sensitized solar cell photoanode.
PDF
