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Search Results: 1 - 10 of 6929 matches for " franco; "
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Epidemiology As a Tool to Reveal Inequalities in Breast Cancer Care.
Franco
PLOS Medicine , 2006,
Abstract:
Eyjafjallajökull Volcanic Eruption: Ice Nuclei and Particle Characterization  [PDF]
Franco Belosi, Gianni Santachiara, Franco Prodi
Atmospheric and Climate Sciences (ACS) , 2011, DOI: 10.4236/acs.2011.12005
Abstract: The Eyjafjallajökull 2010 eruption was an extraordinary event in that it led to widespread and unprecedented disruption to air travel over Europe – a region generally considered to be free from the hazards associated with volcanic eruptions, excluding the extreme south influenced by Mt. Etna. In situ measurements were performed at the research centre of the National Research Council (CNR) area of Bologna (44?31′ N; 11?20′ E), an urban background site, in order to contribute to knowledge concerning the impact of the volcanic emission.Aerosol size distributions measured with a Differential Mobility Particle Sizer (DMPS) and an Optical Particle Counter (OPC) show an increase in concentration of the accumulation and coarse fraction during the transit of the ash cloud, with respect to the subsequent period of the event, while particles smaller than 0.3 μm seem not to be affected by volcanic ash. Ice nuclei measured in the sampled air during and after the ash cloud transit, show an higher concentration during the ash cloud transit, with a ratio of about 1:110 with respect to the aerosol number concentration measured with the OPC.The elemental composition of aerosol particles, performed with SEM-EDX, gives about 30% of the inorganic coarse particles (geometric diameter larger than 1 μm) of volcanic origin on the 20 April. Si and Al concentrations result prevalently much higher than Ca and Fe ones. A large number of particles contained sulphur, indicating secondary processes of sulphate/sulphuric acid formation due to sulphur dioxide oxidation during transport in the volcanic plume.
A Review of Termo- and Diffusio-Phoresis in the Atmospheric Aerosol Scavenging Process. Part 1: Drop Scavenging  [PDF]
Gianni Santachiara, Franco Prodi, Franco Belosi
Atmospheric and Climate Sciences (ACS) , 2012, DOI: 10.4236/acs.2012.22016
Abstract: The role of phoretic forces in providing in-cloud and below-cloud scavenging due to falling drop is reviewed by considering published papers dealing with theoretical models, laboratory and field measurements. Theoretical analyses agree that Brownian diffusion appears to dominate drop scavenging of aerosol with radius less than 0.1 μm, and inertial impaction dominates scavenging of aerosol with radius higher than 1 μm. Thus, there is a minimum collection efficiency for particles in the approximate range 0.1 μm - 1 μm, where phoretic forces are felt. Generally speaking, published papers report not uniform evaluations of the contribution of thermo- and diffusiophoretic forces. This disagreement is partially due to the different laboratory and field conditions, and different theoretical approaches.
Performance Evaluation of Four Commercial Optical Particle Counters  [PDF]
Franco Belosi, Gianni Santachiara, Franco Prodi
Atmospheric and Climate Sciences (ACS) , 2013, DOI: 10.4236/acs.2013.31006
Abstract:

The performances of four optical particles counters, Aerosol Spectrometer (Grimm 1.108), Enviro Check (Grimm 1.107), DustMonit and ParticleScan, were evaluated in laboratory tests employing monodisperse aerosol particles. The study focused on how commercial instruments perform during routine measurements respect to OPC scientific understanding, because it is important for users of such instruments to be aware of their limitations. Measurements were performed using aerosol generated by a Monodisperse Aerosol Generator (MAGE), which produced carnauba wax particles of diameter (1.00 ± 0.08) μm and (1.40 ± 0.15) μm, and monodisperse Polystyrene Latex (PSL) aerosol with nominal diameter of 1.0mm. The results show comparable total particle number concentrations for all the counters, when the count of the first size channel (0.3 - 0.4 μm) for the 1.108 Grimm counter was left out. In the said channel the Grimm counter 1.108 always showed much higher particle counts than those inferred from the tested aerosols. The overcount was proved by the fact that the aerosol sampled in each test on a Nuclepore filter showed no particles in the 0.3 - 0.4 μm range when examined under Scanning Electronic Microscope (SEM). The presence of an artefact produced by the counter was assumed as a likely explanation. For all the counters, the Count Median Diameters (CMDs) of aerosol size distributions, were far below the expected value for the aerosol used. The nearest CMD values to the expected ones were shown by the Grimm 1.107 counter.

Quick Single Run Capillary Zone Electrophoresis Determination of Active Ingredients and Preservatives in Pharmaceutical Products  [PDF]
Marina Franco, Renata Jasionowska
American Journal of Analytical Chemistry (AJAC) , 2013, DOI: 10.4236/ajac.2013.43016
Abstract:

The paper deals with the development of a rapid and efficient Capillary Zone Electrophoresis (CZE) method for Quality Control analysis of pharmaceutical preparations containing antihistamines, decongestants, anticholinergic remedies and preservatives. Active ingredients of interest are: ChlorPheniramine Maleate (CPM), DiPhenhydramine Hydrochloride (DPH), Ephedrine hydrochloride (E), Isopropamide Iodide (II), Pheniramine Maleate (PM), Lidocaine hydrochloride (L), Tetracaine hydrochloride (T), Clopamide Hydrochloride (CH), DiHydroErgochristine (DHE), PhenylEphrine hydrochloride (PE) and Acetaminophen (A). Preservatives studied are: MethylParaben (MeP), EthylParaben (EtP), PropylParaben (PrP), ButylParaben (BuP), p-HydroxyBenzoic Acid (p-HBA). All these analytes were separated in a single run using 60 mM tetraborate buffer solution (TBS) pH = 9.2 as a BackGround Electrolyte (BGE) by using an uncoated fused silica capillary of I.D. = 50 mm and applying a voltage of 25 kV in the first part of the electropheretic run (up to 5.8 min) and 30 kV for the remaining time. The hydrodynamic pressurization of the inlet vial was 20 psi at 7.2 min. up to the end of analysis. Total separation time was of 7.5 min. The method was then successfully validated and applied to the simultaneous determination of active ingredients and preservatives. Good repeatability, linearity, and sensitivity were demonstrated. Precision of migration time (tm) was RSD% < 0.53% and of corrected peak area (Ac) was RSD% < 6.15%. The linearity evaluation gave 0.9928 < r2 < 1.000. LOD and LOQ, accuracy (recovery) and ruggedness were evaluated for each analyte demonstrating the good reliability of the method. Analyses of some pharmaceutical real samples were performed.

Does the Homogeneous Ice Nucleation Initiate in the Bulk Volume or at the Surface of Super-Cooled Water Droplets? A Review  [PDF]
Gianni Santachiara, Franco Belosi
Atmospheric and Climate Sciences (ACS) , 2014, DOI: 10.4236/acs.2014.44058
Abstract: The formation of ice in clouds can occur through primary processes, either homogeneously or heterogeneously triggered by aerosol particles called ice nuclei, as well as through secondary processes. The homogeneous ice nucleation process involves only pure water or solution droplets. Homogeneous freezing is crucial for the microphysics in the formation of high-altitude cirrus and polar stratospheric clouds, and also in the glaciation of thunderclouds, at temperatures below about 235 K. Nucleation rates in supercooled water have been measured using different experimental techniques: expansion cloud chambers, water-in-oil emulsions, levitation methods, free falling droplets, supersonic nozzles, field measurements, and molecular dynamics simulations. An important question concerns the possibility that the nucleation process in supercooled water can occur not only in the interior volume of the droplet, but even at or close to its surface. Even if there is no conclusive evidence, the majority of experimental and theoretical results suggest that the contribution of surface nucleation increases with decreasing radius of the supercooled droplets, and the surface (or sub-surface) nucleation rate is prevalent for droplets with radius lower than about 5 μm. If homogeneous freezing initiates at the droplet surface, the freezing rate should depend on the droplet size, and even a slight contamination by molecules within the surface layer could hamper the rate of the nucleation process.
Vulvar Dermatoses: Effect of a Synergistic Treatment with a Moisturizing and Healing Product on the Course of the Disease  [PDF]
Filippo Murina, Franco Vicariotto
Open Journal of Obstetrics and Gynecology (OJOG) , 2015, DOI: 10.4236/ojog.2015.55035
Abstract:

Background: Vulvar dermatoses are inflammatory disorders of genital skin causing itch, burning, and plaques with overlying excoriation and linear fissures. Objective: To assess the effectiveness of a soft foam based on Tiab® system (TF), complex of titanium micro crystals covalently bound with silver ions associated with hyaluronic acid, in the supportive treatment of lichen sclerosus (LS) and lichen simplex chronicus (LSC), the two common vulvar dermatoses. Method: 20 patients with the diagnosis of LS or LSC received an 4-week treatment, during which the subjects applied Mometasone furoate in the form 0.1% cream were treated with Mometasone furoate 0.1% cream in combination with TF once a day. Clinical symptoms (itching and burning) and signs (vulvar suface disruption) were documented at baseline and at the end of the four-week treatment. Results: There was a significant reduction of symptoms between the basal scores and the symptoms complaints at 4-week treatment. Moreover, a significant reduction of excoriations and linear fissures was observed. Conclusion: The present study shows that daily application of TF can be an effective adjunct for the treatment of vulvar dermatosis. The foam had not only a moisturizer action, it may also be associated with a reduction in epithelial disruption in the form of excoriations and fissures.

Vulvar Contact Dermatitis: Effect of a Treatment with a Anti-Inflammatory, Moisturizing and Healing Product on the Course of the Disease  [PDF]
Filippo Murina, Franco Vicariotto
Open Journal of Obstetrics and Gynecology (OJOG) , 2016, DOI: 10.4236/ojog.2016.62014
Abstract: Background: Vulvar contact dermatitis is inflammatory disorders of genital skin causing itch, burning, and plaques with overlying excoriation and linear fissures. Objective: To assess the effectiveness of a soft foam based on Tiab® system (TF), complex of titanium micro crystals covalently bound with silver ions associated with hyaluronic acid, as a treatment of vulvar contact dermatitis. Method: 36 patients with the diagnosis of vulvar contact dermatitis received an 10-days treatment, during which the subjects applied TF, complex of titanium micro crystals covalently bound with silver ions associated with hyaluronic acid on the affected vulvar surfaces, used once a day. Clinical symptoms (itching and burning) and signs (vulvar surface disruption) were documented at baseline and after 1 months of follow-up. Results: There was a significant reduction of symptoms between the basal scores and the symptoms complaints 1 months of follow-up. Moreover a significant reduction of excoriations and linear fissures was observed. Conclusion: The present study shows that application of TF can be an effective agents for the reduction of symptom and sign of vulvar contact dermatitis, and the medical device can be used as a preventive agent in predisposing condition of vulvar discomfort.
An Investigation of Waste Management Practices in the Zambian Construction Industry  [PDF]
Franco Muleya, Herbert Kamalondo
Journal of Building Construction and Planning Research (JBCPR) , 2017, DOI: 10.4236/jbcpr.2017.51001
Abstract: This study investigated the practice and perceptions on waste management and the feasibility of establishing a site waste management plan in the Zambian Construction Industry (ZCI). In this research, Lusaka and the Copperbelt provinces were selected as study areas to represent the construction industry in Zambia. This was because the largest volume of construction work in the country is mainly concentrated in these two provinces. The research targeted contractors from Grades 1 to 3 as categorised and registered by the Zambian National Council for Construction (NCC). Consultancy firms and government institutions were also included in the target population as regulators. Data for this study were obtained through questionnaires, interviews and site surveys. The results from this research indicated that disposal was the most common method of waste management in the Zambian Construction industry as indicated by the highest ranking score with a mean index of 0.923. The research concluded that the construction industry in Zambia has poor practice of waste management through waste disposal which is not environmentally friendly. The results further indicated that it is feasible to adopt a Site Waste Management Plan in the Zambian Construction industry based on the respondents’ willingness mean score of 0.94 from all the categories. Finally, the research confirmed that a Site Waste Management Plan can be an effective tool to address waste management challenges in the Zambian Construction Industry based on the literature review and willingness measured from research respondents.
Effective Treatment of Vulvar-Vaginal Complaints in Women Taking Combined Oral Contraceptive with a New Medical Device in Gel: A Pilot Study  [PDF]
Filippo Murina, Franco Vicariotto
Open Journal of Obstetrics and Gynecology (OJOG) , 2019, DOI: 10.4236/ojog.2019.93033
Abstract: Objective: To assess efficacy and tolerability of a new medical device in gel based on the synergic combination of NioskinTM Red Clover Extract noisome (NRC) and SylTechTM system (SB), a complex of silicium microcrystals covalently bound with silver ions associated with hyaluronic acid to the treatment of vulvo-vaginal dryness and dyspareunia in women taking combined oral contraceptive (COC). Methods: Forty eight women were treated for 12 weeks with NRC + SB vaginal gel (0.75 g/day) for 3 weeks. After therapy, symptoms (dyspareunia and dryness) were evaluated through a 10-cm VAS. Visual examination of the vagina and vulvar vestibule was also conducted, which included observations for petechiae, pallor, friability, dryness, and redness in the mucosa. Ratings were based on a 4-point scale (0, none; 1, mild; 2, moderate; 3, severe). Results: NRC + SB vaginal gel appears to be effective for relief vulvo-vagianl dryness and dyspareunia and an improvement of vaginal and vestibular trophism was noted. Conclusion: NRC + SB vaginal gel proved good treatment options for relief of vulvovaginal symptoms in women who take COC.
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