Search results for "26"

AN INTEGRATED APPROACH FOR THE HCl AND METALS RECOVERY FROM WASTE PICKLING SOLUTIONS: PILOT PLANT DESIGN AND OPERATIONS

2020

Pickling is one of the key steps in the hot-dip galvanizing process, where HCl solutions are largely used to remove metal oxides from metallic surfaces, thus generating spent waste liquors containing high concentrations of metals and acid. Disposal of the industrial pickling waste dramatically affects the hot-dip galvanizing industry economics and environmental footprint. Thus, reducing strong acid waste disposal is one of the most beneficial steps to enhance the process sustainability. Moreover, the continuous regeneration of pickling solutions enhances pickling rate and process performance, also minimizing industrial wastewater disposal and chemicals consumption promoting the circular use…

DEVELOPMENT AND MODELING OF MEMBRANE PROCESSES FOR THE REGENERATION OF ACID PICKLING SOLUTIONS

2021

The doctoral thesis focuses on a novel integrated process for the recovery and valorisation of acid and metal salts present in the waste solutions of the pickling process. The proposed process is based on the integration of two innovative membrane technologies, the Diffusion Dialysis and the Membrane Distillation, coupled with a reactive precipitation section. This hybrid process allows the recovery and the enhancement of waste solutions, as well as optimal operating conditions for the continuous pickling process, thus improving its efficiency. Hydrochloric acid recovery was assessed through a detailed study on the Diffusion Dialysis process by implementing a wide experimental campaign usin…

Scholarly publishing depends on peer reviewers

2018

The peer-review crisis is posing a risk to the scholarly peer-reviewed journal system. Journals have to ask many potential peer reviewers to obtain a minimum acceptable number of peers accepting reviewing a manuscript. Several solutions have been suggested to overcome this shortage. From reimbursing for the job, to eliminating pre-publication reviews, one cannot predict which is more dangerous for the future of scholarly publishing. And, why not acknowledging their contribution to the final version of the article published? PubMed created two categories of contributors: authors [AU] and collaborators [IR]. Why not a third category for the peer-reviewer? published

Assessment of the Inter-Batch Variability of Microstructure Parameters in Topical Semisolids and Impact on the Demonstration of Equivalence

2019

Demonstration of similar microstructure is essential for demonstrating the equivalence of generic topical products since the microstructure of semisolids may affect the drug release. The objective of this study was to compare the microstructure-defining physical parameters of different batches of a reference ointment containing calcipotriol and betamethasone (Daivobet 50 &micro

Anxiety disorder, depression and chronic daily headache: a case-control study.

2012

Chronic headache cause high disability in sufferers and high social cost. Data regarding possible comorbid diseases, manly depression and anxiety, are still few and conflicting.The aim of this case-control, hospital-based study was: to evaluate the prevalence of depression and anxiety in subjects with chronic migraine (CM) and chronic tension-type headache (CTTH); and to compare the results with those found in a control group without headache. Materials and methods We studied 79 patients, 46 with CM and 33 with CTTH, consecutively referred to the Adult Headache Centre of the University of Palermo (A.H. Study) between 2007 and 2009, and 316 controls without headache (each patient was matched…

Brainstem hyperactivity in migraine

2000

Preclinical phase of Alzheimer's disease: Guideline for recognition and study of patients with mild cognitive impairment

2002

Frequency of Mitoxantrone related heart involvement in patients affected by Multiple Sclerosis

2010

A Bayesian Mixed-Methods Analysis of Basic Psychological Needs Satisfaction through Outdoor Learning and Its Influence on Motivational Behavior in Sc…

2017

Research has shown that outdoor educational interventions can lead to students' increased self-regulated motivational behavior. In this study, we searched into the satisfaction of basic psychological needs (BPN), i.e., autonomy support, the learners' experience of competence, and relatedness, both within the peer group and with their teachers, through outdoor learning. From 2014 to 2016, n = 281 students attended “research weeks” at a Student Science Lab in the Alpine National Park Berchtesgaden (Germany). The program is a curriculum-based one-week residential course, centered on a 2-day research expedition. Both before and after the course, students completed a composite questionnaire addr…

“Things that matter most must never be at the mercy of things that matter least” : En kvantitativ studie av psykiske helseplager blant ungdom i Norge…

2018

Masteroppgave psykisk helsearbeid ME504 - Universitetet i Agder 2018 This master thesis has been developed in collaboration between Bente Melbøe Hokland and Majbritt Legind Hersel. Throughout our education we have often discussed a common wonder about youths; why someone is doing well in life while others do not. The master thesis gave us the opportunity to conduct a quantitative survey where we through Ungdata have investigated how many young people who indicate to struggle with depressive ailments and how this is distributed among the sexes. The figures are from 2015. After mapping the scope, the purpose is to investigate which factors may be associated with the experience of depression a…