Marco Palumbo

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OBJECTIVE To compare beta-endorphin and allopregnanolone levels and their response to a 2-week oral estrogen treatment with conjugated equine estrogens (CEE) in young ovariectomized (ovx) and in healthy aged female rats. DESIGN Prospective study. SETTING Animal laboratory in an academic environment. ANIMAL(S) Twenty-four young ovx and 24 healthy aged(More)
OBJECTIVE To evaluate the effects of dehydroepiandrosterone (DHEA) oral administration on neuroendocrine function by investigating the modulation exerted by DHEA administration on allopregnanolone and beta-endorphin (beta-EP) central and peripheral levels in ovariectomized rats. DESIGN Prospective study. SETTING(S) Experimental research environment. (More)
Sequential two-step electron tunneling from nanoparticles has been studied from a transport point of view. A steady-state balance equation for the partial electron currents is derived and solved to obtain the stationary level occupancy, which leads to the overall tunneling current as a function of the applied field. Our model explains the steplike features(More)
A solution based sonochemical synthesis method for ZnO rods is presented with a resulting growth rate in excess of 15 times faster than previously reported. Such material is solution processable and could be exploited in the fabrication of transparent conductors and/or large area electronics via inkjet printing methods or solution based self-assembly(More)
A novel, scalable, solution-based method suitable for the control of ZnO crystal morphology at moderate temperature from rods/stars to rose-shaped, flowerlike structures is presented here. The synthesized ZnO roselike crystals are composed by wide nanosheets folded several times on themselves. This study represents the first step toward the full(More)
Presented is the performance of novel organic semiconductor formulations with charge mobility of ~4 cm/Vs and on/off ratios of >10. OTFTs for end-use applications, such as OLED display backplanes are discussed. Material and device stability is demonstrated, in combination with excellent standard deviation (<5 %) across the substrate.
Retrospective research carried out by 29 General Practitioners in their databases, in order to evaluate the prevalence of gastro-esophageal reflux disease in its different clinical outbreaks and the incidence of new diagnosis in the last quinquennium, the diagnostic approach through instrumental examinations (endoscopy) or empirical tests (PPI test), and(More)
Recent studies of advanced materials have succeeded in obtaining a whole new class of composites such as nanometre sized particles [1] and structures [2] with significant potential for field emission (FE) applications. While bulk emissive materials, such as metals and in most cases semiconductors exhibit smooth upward current-voltage (I-V) characteristics,(More)
OBJECTIVE The aging process is associated with a decline in the circulating Delta5-androgen dehydroepiandrosterone (DHEA) and its sulfate ester, dehydroepiandrosterone sulfate (DHEAS). The present study aimed to evaluate the effects of a long-term (12 months) oral DHEA administration (25 mg/day) on adrenal function, before and after 3, 6 and 12 months of(More)
Traditional field emission (FE) experiments have used a wide range of materials, which were initially exposed to pre-treatment procedures in order to burn off any residual contaminants present on the sample's surface. However, interesting results are obtained if the field emission experiment is performed on composite materials instead on pristine surfaces.(More)
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