1,722,119 research outputs found
Managing bipolar youths in a psychiatric inpatient emergency service
No full textManaging bipolar youths in a psychiatric inpatient emergency service.
Masi G, Mucci M, Pias P, Muratori F.
IRCCS Stella Maris, Scientific Institute of Child Neurology and Psychiatry, Via
dei Giacinti 2, 56018 Calambrone, Pisa, Italy. [email protected]
Among the youths referred to our Psychiatric Inpatient Emergency Service, we
focused on bipolar disorder (BD), to explore predictive elements for the outcome.
Fifty-one patients (30 males, 21 females, age range 8-18 years, mean age 14.2 ±
3.1 years) received a diagnosis of BD, according to historical information,
prolonged observations, and a structured clinical interview (K-SADS-PL).
Twenty-seven patients (52.9%) were responders at the end of hospitalization
according to CGI-I 1 or 2 and 50% decrease of both Brief Psychiatric Rating Scale
(BPRS) and Young Mania Rating Scale (YMRS). Responders received a longer
hospitalization. Non responders were more severe at baseline, had higher scores
at BPRS (namely positive symptoms), and were more aggressive.
Environmental/social stressors and comorbidities were frequent, but they did not
affect the outcome. In summary, BD in emergency settings may represent a subtype
with clinical and therapeutic peculiarities, and specific challenges for mental
health services
Steel Corrosion Behavior in Light Weight Fly-Ash Based Alkali Activated Mortars
Full text linkAlkali activated materials as possible sustainable alternative to cementitious binders showed competitive performances in terms of mechanical and durability properties and high temperature stability. For this reason, light weight fly-ash based mortars have already been optimized as passive fire protective coating for steel structures. However, a lack of information about the durability of these innovative systems in terms of steel corrosion resistance is still present. Thus, this study aims at investigating the durability of steel coated with a 20-mm thick light weight mortar layer in a neutral environment (tap water) and in presence of chloride-containing solution (0.2 M NaCl). In addition, the influence of pore solution chemistry and pH was discussed through electrochemical testing in leachate pore solution and NaOH aqueous solutions at different concentrations. It was found that almost complete protection ability of light weight mortar was obtained when coated steel is exposed to neutral solution for 60 days, while in presence of chlorides, steel is more susceptible to corrosion already after 40 days of exposure. In addition, the developed open porosity of the light weight mortars, it was found that pH and the chemistry of the pore solution in contact with steel strongly influenced the steel corrosion resistance
Gender Balance in Construction Material Research: The Analysis of Alkali-Activated Materials by a Bibliometric Study Using Scopus Database
Full text linkResearch in alkali-activated materials (AAMs) is an innovative and dynamic material science topic. This is due to the relevant performances in terms of physico-mechanical properties comparable to traditional construction materials (e.g., ordinary Portland cement). The sustainability of AAMs is often highlighted since they can be developed by using many natural or industrial by-products–based precursors. This leads to challenges with the optimization of AAM production due to their different performances, availability, and costs. However, they are flexible and locally adapted materials. The research interest in AAMs has rapidly increased in the early 2000s. In recent years, about 1,000 international articles have been published each year. This study aims at assessing the gender balance of this specific research topic to investigate the relevance of women’s participation. Author lists of the published articles were analyzed throughout the Scopus database, applying “alkali-activated material” and “geopolymers” as keywords in the titles, abstracts, and keywords search. The last 10 years (2009–2019) were taken into account. The gender of the most prolific authors was analyzed, and a focus of European authors on this topic was considered, as more than 25% of the research in AAMs have been carried out in Europe. The analysis of 5,900 publications in the last decade shows that there is currently a shift toward men in the gender balance in this specific research, and female authors only covered 22% of the most productive authors worldwide. Considering European authors, a more equal gender distribution is reached, when the first author is considered, with a concentration of women in the range of 36–56%, recorded over 1,396 articles
Air lime mortar consolidation by nanolimes and ammonium phosphate: Compatibility, effectiveness and durability
Full text linkIn this study, a systematic comparison is presented between a commercial dispersion of Ca(OH)2 nanoparticles (so-called nanolimes) and aqueous solutions of diammonium hydrogen phosphate (DAP) for consolidation of air lime mortars. The effects were evaluated in terms of compatibility (composition and morphology of the new phases, changes in color, porosity and water absorption), effectiveness (product uptake, dynamic elastic modulus, scotch tape test) and durability (permanence of the consolidating action after accelerated ageing). While both consolidants proved to be compatible, DAP solutions outperformed nanolimes in terms of effectiveness and durability, especially when highly concentrated DAP solutions were used
Recommendations for the pharmacological management of irritability and aggression in conduct disorder patients
No full textComparison between ammonium phosphate and nanolimes for render consolidation
Full text linkIn this study, a systematic comparison is presented between ammonium phosphate and commercial nanolimes for the conservation of lime-based renders. Such comparison is very significant, considering that nanolimes are the most widely used inorganic consolidant commonly applied onto plasters, renders and frescoes. Specimens made of slaked lime and siliceous sand were prepared, by applying the fresh mortar onto a solid brick substrate. After curing for 4 months, samples were consolidated by (i) an aqueous solution of diammonium hydrogen phosphate and (ii) commercial nanolimes. The effects of the treatments were evaluated in terms of composition and morphology of the new phases, effectiveness (ultrasounds and scotch tape test) and compatibility (color change and water absorption). The results of the study confirm the high potential of the phosphate treatment, able to provide higher mechanical consolidation in a shorter time (24 hours, instead of at least 4 weeks for nanolimes), while being equally compatible from the aesthetical and physical point of view
Coatings Based on Light-Weight Alkali Activated Mortars for Steel Corrosion Protection
No full textAlkali activated materials and geopolymers have attracted a lot of attention in the last 20 years thanks to their excellent mechanical performances, durability and sustainability properties, especially for civil applications. These materials also exhibit promising properties as fire- and corrosion-resistant protection systems. In a previous study, a 20-mm coating based on light-weight alkali activated mortar (LWAAM) suitable for the protection of steel structures against fire was successfully developed. To understand if the same coating is also able to ensure corrosion protection to steel structures, this study reports the results obtained in two different chloride-rich environments. The corrosion performance of the new system based on steel coated by LWAAM (using expanded perlite and hydrogen peroxide in the mix) was compared with a steel coated by a traditional alkali activated mortar (NWAAM). Electrochemical tests on steel samples immersed in an alkaline solution simulating the pore environment of the binder or embedded in the two different types of mortars were carried out in presence of different chloride concentrations. It was found that the alkaline environment is able to passivate the steel surface, however, increasing the chloride concentration, the passive film is less stable and promotes steel corrosion. In presence of low chloride concentration (i.e., 0.2M NaCl), the increased porosity of the LWAAM did not impair the steel corrosion protection, when compared with NWAAM
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